File your modelo at the AEAT portal¶
This page covers the handoff from a verified draft to a real filing at AEAT, as
an ordered checklist: present the figures yourself at the portal, save the
justificante, and record the filing locally. You prepare and check a
modelo with aeat, but the tool never submits anything to AEAT. You
file at the portal yourself, signed with your own credentials. The work file
command at the end records a local marker only; it does not and cannot file on
your behalf.
How you present depends on the modelo. Modelo 130 exports a local fichero-BOE file for upload. Modelo 303’s registry layout also exists, but its export currently refuses because Cadrumo has no reviewed AEAT product/software identity authority with which to stamp the envelope; key its calculated box values into the portal form instead.
Before you start¶
You need:
An active taxpayer profile carrying
--nameand--surnames, or filing refuses because it cannot stamp the operator name. Create one withaeat config profile create; see Set up your taxpayer profile.A verified saved calculation (work unit) for the modelo and period you want to file. If your draft isn’t verified yet, see verification reports.
Your own AEAT portal credentials, a digital certificate or Cl@ve. These are your credentials for AEAT’s website, separate from anything configured inside
aeat. The tool’s AEAT authentication is for read-only data pulls, not for filing.
Every aeat command on this page needs your master-key passphrase; the
tool prompts for it. The tool’s messages are in Spanish.
If you’re new to the workflow as a whole, start with the quickstart.
The filing chain¶
The sequence below runs the machine half of the filing end to end: it prepares a
classified, evidenced Modelo 303 for the first quarter of 2026, verifies it,
confirms the verified revision, shows Modelo 303 export refusing, and records the local
filed marker. Between the refusal and the marker, you present the figures at the
AEAT portal yourself (steps 2 to 4 below). The final frame is the reconcile
command you run once you have AEAT’s justificante on disk; it is shown but not
run here, because it needs your real receipt:
1Ask for the verified saved calculation before exporting anything.
aeat --format json app modelo work revision --modelo 303 --year 2026 --period 1T \
--select latest-verifiedaeat --format json app modelo work revision --modelo 303 --year 2026 --period 1T `
--select latest-verified{ "active_profile": "docs-sequence-sandbox", "command": "modelo.work.revision", "notices": [], "result": { "binding_overrides": { "modelo-303-bienes-inversion-regularizacion-casilla-43": "0", "modelo-303-casilla-120-no-sujetas-localizacion-base": "0", "modelo-303-casilla-122-inversion-sujeto-pasivo-base": "0", "modelo-303-casilla-59-entregas-intracomunitarias-base": "0", "modelo-303-casilla-60-exportaciones-base": "0", "modelo-303-compensacion-pendiente-anteriores": "0", "modelo-303-criterio-caja-adquisiciones-base": "0", "modelo-303-criterio-caja-adquisiciones-cuota": "0", "modelo-303-criterio-caja-entregas-art75-base": "0", "modelo-303-criterio-caja-entregas-art75-cuota": "0", "modelo-303-iva-autorepercutido-interior-deducible-cuota": "0", "modelo-303-iva-autorepercutido-interior-devengado-cuota": "0", "modelo-303-iva-autorepercutido-intracomunitaria-cuota": "0", "modelo-303-iva-autorepercutido-intracomunitaria-deducible-cuota": "0", "modelo-303-iva-autorepercutido-intracomunitaria-devengado-base": "0", "modelo-303-iva-autorepercutido-intracomunitaria-devengado-cuota": "0", "modelo-303-iva-repercutido-general-base": "1000", "modelo-303-iva-repercutido-general-cuota": "210", "modelo-303-iva-repercutido-reducido-base": "0", "modelo-303-iva-repercutido-reducido-cuota": "0", "modelo-303-iva-repercutido-reducido-transitorio-base": "0", "modelo-303-iva-repercutido-reducido-transitorio-cuota": "0", "modelo-303-iva-repercutido-super-reducido-base": "0", "modelo-303-iva-repercutido-super-reducido-cuota": "0", "modelo-303-iva-repercutido-super-reducido-transitorio-base": "0", "modelo-303-iva-repercutido-super-reducido-transitorio-cuota": "0", "modelo-303-iva-soportado-importaciones-cuota": "0", "modelo-303-iva-soportado-interiores-base": "500", "modelo-303-iva-soportado-interiores-cuota": "105", "modelo-303-profile-state-attribution-ratio": "100", "modelo-303-prorrata-regularizacion-casilla-44": "0", "modelo-303-recargo-equivalencia-general-cuota": "0", "modelo-303-recargo-equivalencia-reducido-cuota": "0", "modelo-303-recargo-equivalencia-super-reducido-cuota": "0" }, "calculation_revision_id": "f976ec3e454a1fa1c12c1f41d30947cc66821ffa5ee62c4f871ec039ba694b92", "casilla_values": { "01": "0", "02": "0", "03": "0.00", "04": "0", "05": "0", "06": "0.00", "07": "1000", "08": "0", "09": "210.00", "10": "0.00", "107": "0", "108": "0", "109": "0", "11": "0.00", "111": "0", "112": "0", "12": "0", "120": "0", "122": "0", "123": "0", "124": "0", "125": "0", "126": "0", "127": "0", "128": "0", "13": "0.00", "14": "0", "15": "0", "150": "0", "151": "0", "152": "0", "153": "0", "154": "0.00", "155": "0.00", "156": "0", "157": "0", "158": "0", "16": "0", "165": "0", "166": "0.00", "167": "0.00", "168": "0", "169": "0", "17": "0", "170": "0", "18": "0", "19": "0", "20": "0", "21": "0", "22": "0", "23": "0", "24": "0", "25": "0", "26": "0", "27": "210.00", "28": "500", "29": "105.00", "30": "0", "31": "0", "32": "0", "33": "0.00", "34": "0", "35": "0", "36": "0", "37": "0.00", "38": "0", "39": "0", "40": "0", "41": "0", "42": "0", "43": "0.00", "44": "0.00", "45": "105.00", "47": "0", "48": "0", "49": "0", "50": "0", "51": "0", "52": "0", "53": "0", "54": "0", "55": "0", "56": "0", "57": "0", "58": "0", "59": "0", "60": "0", "62": "0", "63": "0", "64": "105.00", "65": "100", "66": "105.00", "68": "0", "70": "0", "71": "105.00", "74": "0", "75": "0", "76": "0", "77": "0", "79": "0", "80": "0", "81": "0", "83": "0", "84": "0", "86": "0", "88": "0", "89": "0", "90": "0", "91": "0", "92": "0", "93": "0", "94": "0", "95": "0", "96": "0", "97": "0", "98": "0", "99": "0", "decl.ejercicio": "2026", "iva.autoconsumo.promotor.base": "0", "iva.autoconsumo.promotor.cuota": "0.00", "iva.autorepercutido.interior.deducible": "0", "iva.autorepercutido.interior.devengado": "0", "iva.autorepercutido.intracomunitaria": "0", "iva.autorepercutido.intracomunitaria.deducible": "0", "iva.autorepercutido.intracomunitaria.devengado": "0", "iva.autorepercutido.intracomunitaria.devengado.base": "0", "iva.compensacion-aplicada-periodo": "0.00", "iva.compensacion-disponible-fin-periodo": "0.00", "iva.compensacion-generada-periodo": "0.00", "iva.compensacion-pendiente-periodos-anteriores": "0", "iva.compensacion-pendiente-periodos-posteriores": "0.00", "iva.cuota-deducible-total": "105.00", "iva.cuota-devengada-total": "210.00", "iva.prorrata-porcentaje": "100", "iva.prorrata-volumen-con-derecho": "0", "iva.prorrata-volumen-total": "0", "iva.regularizacion-inversiones": "0", "iva.repercutido.general": "210", "iva.repercutido.reducido": "0", "iva.repercutido.reducido.transitorio": "0", "iva.repercutido.super-reducido": "0", "iva.repercutido.super-reducido.transitorio": "0", "iva.resultado": "105.00", "iva.resultado-regimen-general": "105.00", "iva.soportado.importaciones": "0", "iva.soportado.interiores": "105" }, "created_at": "2026-04-01T09:00:00+00:00", "detail_rows": [], "filed_at": null, "filed_by": null, "input_values_by_casilla_id": { "01": "0", "04": "0", "07": "1000", "120": "0", "122": "0", "153": "0", "165": "0", "170": "0", "21": "0", "24": "0", "28": "500", "43": "0", "44": "0", "59": "0", "60": "0", "62": "0", "63": "0", "65": "100", "74": "0", "75": "0", "decl.ejercicio": "2026", "decl.periodo": "1T", "iva.autorepercutido.interior.deducible": "0", "iva.autorepercutido.interior.devengado": "0", "iva.autorepercutido.intracomunitaria": "0", "iva.autorepercutido.intracomunitaria.deducible": "0", "iva.autorepercutido.intracomunitaria.devengado": "0", "iva.autorepercutido.intracomunitaria.devengado.base": "0", "iva.compensacion-pendiente-periodos-anteriores": "0", "iva.repercutido.general": "210", "iva.repercutido.reducido": "0", "iva.repercutido.reducido.transitorio": "0", "iva.repercutido.super-reducido": "0", "iva.repercutido.super-reducido.transitorio": "0", "iva.soportado.importaciones": "0", "iva.soportado.interiores": "105" }, "modality": null, "modality_reason": null, "observations": [ { "absent_by_design": false, "casilla_id": "01", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "02", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "03", "formula_id": "modelo-303-dr303-03-projection", "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "value", "operand_casilla_refs": [ "iva.repercutido.super-reducido" ], "operand_refs": [ "iva.repercutido.super-reducido" ], "operand_values": [ "0" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0.00" }, { "absent_by_design": false, "casilla_id": "04", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "05", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "06", "formula_id": "modelo-303-dr303-06-projection", "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "value", "operand_casilla_refs": [ "iva.repercutido.reducido" ], "operand_refs": [ "iva.repercutido.reducido" ], "operand_values": [ "0" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0.00" }, { "absent_by_design": false, "casilla_id": "07", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "1000" }, { "absent_by_design": false, "casilla_id": "08", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "09", "formula_id": "modelo-303-dr303-09-projection", "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "value", "operand_casilla_refs": [ "iva.repercutido.general" ], "operand_refs": [ "iva.repercutido.general" ], "operand_values": [ "210" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "210.00" }, { "absent_by_design": false, "casilla_id": "10", "formula_id": "modelo-303-dr303-10-projection", "legal_refs": [ "ley-37-1992:art-13", "ley-37-1992:art-15", "ley-37-1992:art-69", "ley-37-1992:art-70", "ley-37-1992:art-84", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "value", "operand_casilla_refs": [ 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"legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "11", "formula_id": "modelo-303-dr303-11-projection", "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "value", "operand_casilla_refs": [ "iva.autorepercutido.intracomunitaria.devengado" ], "operand_refs": [ "iva.autorepercutido.intracomunitaria.devengado" ], "operand_values": [ "0" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0.00" }, { "absent_by_design": false, "casilla_id": "111", "formula_id": null, "legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", 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"iva.autorepercutido.interior.devengado", "formula_id": null, "legal_refs": [ "ley-37-1992:art-84", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.autorepercutido.intracomunitaria", "formula_id": null, "legal_refs": [ "ley-37-1992:art-69", "ley-37-1992:art-70", "ley-37-1992:art-84", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.autorepercutido.intracomunitaria.deducible", "formula_id": null, "legal_refs": [ "ley-37-1992:art-13", "ley-37-1992:art-15", "ley-37-1992:art-69", "ley-37-1992:art-70", "ley-37-1992:art-84", "ley-37-1992:art-92", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.autorepercutido.intracomunitaria.devengado", "formula_id": null, "legal_refs": [ "ley-37-1992:art-13", "ley-37-1992:art-15", "ley-37-1992:art-69", "ley-37-1992:art-70", "ley-37-1992:art-84", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.autorepercutido.intracomunitaria.devengado.base", "formula_id": null, "legal_refs": [ "ley-37-1992:art-13", "ley-37-1992:art-15", "ley-37-1992:art-69", "ley-37-1992:art-70", "ley-37-1992:art-84", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.compensacion-aplicada-periodo", "formula_id": "modelo-303-compensacion-aplicada-periodo", "legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", "rd-1624-1992:art-29", "rd-1624-1992:art-30", "orden-eha-3786-2008:art-1" ], "op": "min", "operand_casilla_refs": [ "iva.compensacion-pendiente-periodos-anteriores", "iva.resultado-regimen-general" ], "operand_refs": [ "iva.compensacion-pendiente-periodos-anteriores", "iva.resultado-regimen-general" ], "operand_values": [ "0", "105.00" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0.00" }, { "absent_by_design": false, "casilla_id": "iva.compensacion-disponible-fin-periodo", "formula_id": "modelo-303-compensacion-disponible-fin-periodo", "legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", "rd-1624-1992:art-29", "rd-1624-1992:art-30", "orden-eha-3786-2008:art-1" ], "op": "add", "operand_casilla_refs": [ "iva.compensacion-pendiente-periodos-posteriores", "iva.compensacion-generada-periodo" ], "operand_refs": [ "iva.compensacion-pendiente-periodos-posteriores", "iva.compensacion-generada-periodo" ], "operand_values": [ "0.00", "0.00" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0.00" }, { "absent_by_design": false, "casilla_id": "iva.compensacion-generada-periodo", "formula_id": "modelo-303-compensacion-generada-periodo", "legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", "rd-1624-1992:art-29", "rd-1624-1992:art-30", "orden-eha-3786-2008:art-1" ], "op": "max", "operand_casilla_refs": [ "iva.resultado" ], "operand_refs": [ "iva.resultado" ], "operand_values": [ "105.00" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0.00" }, { "absent_by_design": false, "casilla_id": "iva.compensacion-pendiente-periodos-anteriores", "formula_id": null, "legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", "rd-1624-1992:art-29", "rd-1624-1992:art-30", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.compensacion-pendiente-periodos-posteriores", "formula_id": "modelo-303-compensacion-pendiente-periodos-posteriores", "legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", "rd-1624-1992:art-29", "rd-1624-1992:art-30", "orden-eha-3786-2008:art-1" ], "op": "subtract", "operand_casilla_refs": [ "iva.compensacion-pendiente-periodos-anteriores", "iva.compensacion-aplicada-periodo" ], "operand_refs": [ "iva.compensacion-pendiente-periodos-anteriores", "iva.compensacion-aplicada-periodo" ], "operand_values": [ "0", "0.00" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "0.00" }, { "absent_by_design": false, "casilla_id": "iva.cuota-deducible-total", "formula_id": "modelo-303-iva-cuota-deducible-total", "legal_refs": [ "ley-37-1992:art-92", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "add", "operand_casilla_refs": [ "iva.soportado.interiores", "iva.soportado.importaciones", "iva.autorepercutido.intracomunitaria", "iva.autorepercutido.interior.deducible", "43", "44" ], "operand_refs": [ "iva.soportado.interiores", "iva.soportado.importaciones", "iva.autorepercutido.intracomunitaria", "iva.autorepercutido.interior.deducible", "43", "44" ], "operand_values": [ "105", "0", "0", "0", "0.00", "0.00" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "105.00" }, { "absent_by_design": false, "casilla_id": "iva.cuota-devengada-total", "formula_id": "modelo-303-iva-cuota-devengada-total", "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-90", "ley-37-1992:art-91", "ley-37-1992:art-161", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "add", "operand_casilla_refs": [ "iva.repercutido.general", "iva.repercutido.reducido", "iva.repercutido.super-reducido", "iva.repercutido.reducido.transitorio", "iva.repercutido.super-reducido.transitorio", "iva.autorepercutido.intracomunitaria", "iva.autorepercutido.interior.devengado", "iva.autoconsumo.promotor.cuota", "18", "21", "24", "158", "170", "26", "15", "152" ], "operand_refs": [ "iva.repercutido.general", "iva.repercutido.reducido", "iva.repercutido.super-reducido", "iva.repercutido.reducido.transitorio", "iva.repercutido.super-reducido.transitorio", "iva.autorepercutido.intracomunitaria", "iva.autorepercutido.interior.devengado", "iva.autoconsumo.promotor.cuota", "18", "21", "24", "158", "170", "26", "15", "152" ], "operand_values": [ "210", "0", "0", "0", "0", "0", "0", "0.00", "0", "0", "0", "0", "0", "0", "0", "0" ], "source_refs": [ "aeat-dr-303-2024-late", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "210.00" }, { "absent_by_design": false, "casilla_id": "iva.prorrata-porcentaje", "formula_id": "modelo-303-iva-prorrata-porcentaje", "legal_refs": [ "ley-37-1992:art-104", "ley-37-1992:art-102", "ley-37-1992:art-94", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "if_then_else", "operand_casilla_refs": [ "iva.prorrata-volumen-total" ], "operand_refs": [ "iva.prorrata-volumen-total" ], "operand_values": [ "0" ], "source_refs": [ "aeat-dr-303-2024-early", "aeat-modelo-303-procedure", "boe-modelo-303-2008-form" ], "value": "100" }, { "absent_by_design": false, "casilla_id": "iva.prorrata-volumen-con-derecho", "formula_id": null, "legal_refs": [ "ley-37-1992:art-104", "ley-37-1992:art-102", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026", "aeat-modelo-303-procedure" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.prorrata-volumen-total", "formula_id": null, "legal_refs": [ "ley-37-1992:art-104", "ley-37-1992:art-102", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026", "aeat-modelo-303-procedure" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.regularizacion-inversiones", "formula_id": null, "legal_refs": [ "ley-37-1992:art-107", "ley-37-1992:art-108", "ley-37-1992:art-109", "ley-37-1992:art-110", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026", "aeat-modelo-303-procedure" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.repercutido.general", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "210" }, { "absent_by_design": false, "casilla_id": "iva.repercutido.reducido", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.repercutido.reducido.transitorio", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.repercutido.super-reducido", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.repercutido.super-reducido.transitorio", "formula_id": null, "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-91", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.resultado", "formula_id": "modelo-303-iva-resultado", "legal_refs": [ "ley-37-1992:art-99", "ley-37-1992:art-115", "ley-37-1992:art-116", "rd-1624-1992:art-71", "rd-1624-1992:art-29", "rd-1624-1992:art-30" ], "op": "subtract", "operand_casilla_refs": [ "66", "77", "68", "iva.compensacion-aplicada-periodo" ], "operand_refs": [ "66", "77", "68", "iva.compensacion-aplicada-periodo" ], "operand_values": [ "105.00", "0", "0", "0.00" ], "source_refs": [ "aeat-dr-303-2024-early", "boe-modelo-303-2008-form", "aeat-modelo-303-procedure" ], "value": "105.00" }, { "absent_by_design": false, "casilla_id": "iva.resultado-regimen-general", "formula_id": "modelo-303-iva-resultado-regimen-general", "legal_refs": [ "ley-37-1992:art-88", "ley-37-1992:art-92", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": "subtract", "operand_casilla_refs": [ "iva.cuota-devengada-total", "iva.cuota-deducible-total" ], "operand_refs": [ "iva.cuota-devengada-total", "iva.cuota-deducible-total" ], "operand_values": [ "210.00", "105.00" ], "source_refs": [ "aeat-dr-303-2024-early", "boe-modelo-303-2008-form", "aeat-modelo-303-procedure" ], "value": "105.00" }, { "absent_by_design": false, "casilla_id": "iva.soportado.importaciones", "formula_id": null, "legal_refs": [ "ley-37-1992:art-17", "ley-37-1992:art-92", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "0" }, { "absent_by_design": false, "casilla_id": "iva.soportado.interiores", "formula_id": null, "legal_refs": [ "ley-37-1992:art-92", "rd-1624-1992:art-71", "orden-eha-3786-2008:art-1" ], "op": null, "operand_casilla_refs": [], "operand_refs": [], "operand_values": [], "source_refs": [ "aeat-dr-303-2026" ], "value": "105" } ], "operation": "modelo.work.revision", "registry_snapshot_ref": { "modelo": "303", "modelo_year": 2026, "period": "1T", "revision_id": "2026-y-siguientes" }, "relation_overrides": {}, "result_summary": [ { "casilla_id": "iva.cuota-devengada-total", "label": "Total accrued VAT amount", "role": "key_figure", "value": "210.00" }, { "casilla_id": "iva.cuota-deducible-total", "label": "Total deductible VAT amount", "role": "key_figure", "value": "105.00" }, { "casilla_id": "iva.resultado-regimen-general", "label": "General regime result", "role": "key_figure", "value": "105.00" }, { "casilla_id": "64", "label": "Result - Sum of results ([46]+[58]+[76])", "role": "key_figure", "value": "105.00" }, { "casilla_id": "66", "label": "Result - Amount attributable to the State Tax Administration ([64]×[65]/100)", "role": "key_figure", "value": "105.00" }, { "casilla_id": "iva.compensacion-aplicada-periodo", "label": "VAT credit from previous periods applied in this period", "role": "key_figure", "value": "0.00" }, { "casilla_id": "iva.compensacion-pendiente-periodos-posteriores", "label": "VAT credit from previous periods carried forward to later periods", "role": "key_figure", "value": "0.00" }, { "casilla_id": "iva.resultado", "label": "Result of the self-assessment ([66]+[77]+[68]-[78])", "role": "key_figure", "value": "105.00" }, { "casilla_id": "71", "label": "Result final ([69]-[70]+[109])", "role": "key_figure", "value": "105.00" }, { "casilla_id": "iva.compensacion-generada-periodo", "label": "Offset balance generated in this period", "role": "key_figure", "value": "0.00" }, { "casilla_id": "iva.compensacion-disponible-fin-periodo", "label": "Offset balance available for later periods", "role": "key_figure", "value": "0.00" }, { "casilla_id": "27", "label": "Total accrued VAT amount", "role": "key_figure", "value": "210.00" }, { "casilla_id": "45", "label": "Total deductible amount", "role": "key_figure", "value": "105.00" } ], "source_provenance": [ { "contributor_binding_source": "ledger_iva_aggregation", "contributor_source_kind": "ledger_iva_aggregation", "dependency_treatment": "", "fingerprint": null, "lineage_role": "primary", "parent_source_ref": null, "resolved_binding_source": "ledger_iva_aggregation", "resolver_id": "ledger_iva_aggregation", "source_ref": "transaction:71a5db2bb891df295bee72544c40497d24d5c8cfc7edab745ce7339dcf8d6518" }, { "contributor_binding_source": "ledger_iva_aggregation", "contributor_source_kind": "ledger_iva_aggregation", "dependency_treatment": "", "fingerprint": null, "lineage_role": "primary", "parent_source_ref": null, "resolved_binding_source": "ledger_iva_aggregation", "resolver_id": "ledger_iva_aggregation", "source_ref": "transaction:e3eeac5e306efe4e82a72896e92e7c236245ec85348834b2c10b120c67fe087d" }, { "contributor_binding_source": "prorrata_regularizacion", "contributor_source_kind": "prorrata_regularizacion", "dependency_treatment": "", "fingerprint": null, "lineage_role": "primary", "parent_source_ref": null, "resolved_binding_source": "prorrata_regularizacion", "resolver_id": "prorrata_regularizacion", "source_ref": "303:2026:1T,2T,3T,4T:prorrata-current-year-values" } ], "state": "verificado_completo", "superseded_at": null, "updated_at": "2026-04-01T09:00:00+00:00", "verified_at": "2026-04-01T09:00:00+00:00", "verified_by": "docs-sequence-sandbox", "work_unit_id": "fa4ee17ff5b5641ee42af2d464c9e468397c41f78e1cccf742c0af6b2264dd9d" }, "schema_version": "2", "status": "success" }
2Try to export the verified calculation; it refuses without reviewed product/software identity authority.
aeat --format json app modelo export --modelo 303 --year 2026 --period 1T --output \
./modelo-303.boeaeat --format json app modelo export --modelo 303 --year 2026 --period 1T --output `
./modelo-303.boe{ "active_profile": "docs-sequence-sandbox", "command": "modelo.export", "error": { "action": null, "category": "FAIL", "code": "FAIL_MODELO_EXPORT", "context": { "calculation_revision_id": "f976ec3e454a1fa1c12c1f41d30947cc66821ffa5ee62c4f871ec039ba694b92" }, "message": "Modelo 303 export requires explicit product/software identity authority", "retryable": false, "runbook_id": null, "trace_id": null }, "notices": [], "schema_version": "2", "status": "error" }
3Record the filing locally, only after the portal submission succeeds.
aeat --format json app modelo work file --modelo 303 --year 2026 --period 1Taeat --format json app modelo work file --modelo 303 --year 2026 --period 1T{ "active_profile": "docs-sequence-sandbox", "command": "modelo.work.file", "notices": [], "result": { "aeat_accepted": false, "aeat_register": null, "amends_filing_record_id": null, "bucket_id": "<bucket-id>", "calculation_revision_id": "f976ec3e454a1fa1c12c1f41d30947cc66821ffa5ee62c4f871ec039ba694b92", "confirmation": "pendiente", "declaration_kind": "original", "external_evidence": null, "filed_at": "2026-04-01T09:00:00+00:00", "filed_by": "docs-sequence-sandbox", "filing_record_id": "e1d21631803e83d49a4726905eee57df4364e551c8096b3b2c35a8e6052782a6", "filing_year": 2026, "kind": "internal_filing", "live_submission": false, "member_nif": null, "modelo": "303", "notes": null, "operation": "modelo.work.file", "origin": "local", "period": { "code": "1T", "filing_year": 2026 }, "status": "vigente", "superseded_at": null, "superseded_by_filing_record_id": null, "work_unit_id": "fa4ee17ff5b5641ee42af2d464c9e468397c41f78e1cccf742c0af6b2264dd9d" }, "schema_version": "2", "status": "success" }
Confirm the verified draft refuses export and records the local marker.
4Reconcile AEAT's justificante against your local record (run against your own receipt).
aeat app modelo reconcile import --modelo 303 --year 2026 --period 1T --file \
./justificante.pdfaeat app modelo reconcile import --modelo 303 --year 2026 --period 1T --file `
./justificante.pdfThe rest of this page walks each step of that chain in order.
Step 1: confirm the draft is verified¶
If no verified calculation exists, work revision --select latest-verified
refuses; run verification first. See
verification reports.
Read the verified figures back with aeat app modelo work revision. These are
the values you present at the portal, box by box.
For a modelo that does carry a layout, export writes a .boe file: a
fixed-width text file in the official BOE (Boletín Oficial del Estado) record
layout, not a PDF or a spreadsheet. It runs entirely on your machine and never
contacts AEAT, and it prints the file’s path, size and SHA-256 checksum. Record
that checksum: it fingerprints the file’s exact contents, so if a question ever
comes up about which version you filed, re-derive it from the file on disk and
compare.
Step 2: present the figures at the AEAT portal yourself¶
This step happens entirely outside aeat, in your browser. Log in with your
own certificate or Cl@ve. Do not expect the tool to do any part of this step
for you.
Log in at AEAT’s Sede Electrónica.
Choose the presentation page for your modelo and period.
Enter the calculated box values in the form. If your modelo carries a fichero-BOE layout and you exported one, import that file instead.
Review the figures the portal shows against your verified calculation.
Sign and submit.
Portal screens change over time, so the exact labels may differ. If you can’t find the presentation page for your modelo, AEAT’s own help or your advisor is the right source. The portal is theirs, not the tool’s.
Step 3: save the justificante¶
Immediately after submitting, download the justificante. AEAT usually offers it as a PDF.
Keep it with your tax records. You’ll use it in step 5 to reconcile AEAT’s record against your local one.
Step 4: record the filing locally¶
Only after the portal submission succeeds, record the filing in aeat with the
work file frame from the filing chain above.
work file records a local “filed” marker and nothing more. It does not and
cannot submit anything to AEAT. Add context with the optional flags --notes TEXT and --by TEXT, for example who filed and any portal reference you want
to remember.
If the command refuses, the usual causes are:
The filing window gate: the period’s filing window isn’t open. A window that has already closed cannot be reopened. The refusal message suggests what to do instead. See the filing calendar for window dates.
The verification state: the saved calculation isn’t verified.
Read the cause shown in the error message before retrying.
Step 5: reconcile the justificante against your local record¶
Compare AEAT’s receipt against the figures you recorded locally with the
reconcile import command shown as the final frame above. Run reconciliation
after step 4 so the comparison is against your filed record. It reports a
verdict of matches or mismatches; the command refuses a PDF it cannot read as
invalid evidence. For reading verdicts and handling mismatches, see
reconcile a filing.
With AEAT authentication configured, skip the manual download and let the
tool fetch the receipt itself. reconcile pull pulls the justificante from
AEAT, stores it as encrypted evidence in your profile, and reconciles in one
step:
1Pull and reconcile the justificante straight from AEAT.
aeat app modelo reconcile pull --modelo 303 --year 2026 --period 1Taeat app modelo reconcile pull --modelo 303 --year 2026 --period 1TIf something goes wrong at the portal¶
If the submission was rejected or interrupted, or you presented the wrong figures, do not record the local filed marker. The marker describes only a submission that succeeded at the portal.
Instead:
Fix the draft in
aeat.Re-verify the calculation.
Read the corrected figures back with
aeat app modelo work revision.Retry the presentation at the portal.
If you filed by uploading a .boe file, re-export it and use the checksum
printed at export to confirm which file is on disk. If it matches the one you
recorded, you have the same file you presented before.
If the portal rejected the submission itself, consult AEAT or your advisor. The rejection happened on AEAT’s side, and their message is the authoritative explanation.
Where to get help¶
For diagnosing problems on your machine (refused commands, export errors, verification failures) see troubleshooting. Unfamiliar terms are defined in the glossary. Before you share command output to ask for help, remove personal tax identifiers such as your NIF, CIF, DNI, NIE, or NII.
Next steps¶
Import, export, and evidence - distinguish the local upload file from official AEAT filing proof.
Reconcile a filing - read verdicts and resolve mismatches.
Verification reports - understand what “verified” means before you file.
Filing calendar - see when each period’s filing window opens and closes.
Check AEAT notifications - read AEAT’s view after you file.
CLI reference - full command and flag details.