Spain tax deadlines 2026.
Every individual and self-employed income tax deadline for Spain in 2026. Plus recurring VAT / GST / sales tax filings. Each deadline links to notes on how to file, what people miss, and matching open tax rules.
Annual deadlines
1 this yearRecurring filings
VAT / GST / Sales taxModelo 303 (VAT Return)
Spain
Spanish quarterly VAT return. Monthly for larger businesses (REDEME regime) or those exceeding €6m turnover.
Open tax rules for Spain
Prepare this return with open-source skills
These skills are in the OpenAccountants repo. Add them to your AI agent and they handle the computation.
Use this skill whenever asked about Spanish personal income tax (IRPF -- Impuesto sobre la Renta de las Personas Fisicas) for self-employed individuals (autonomos). Trigger on phrases like "how much tax do I pay in Spain", "IRPF", "Modelo 100", "Modelo 130", "pago fraccionado", "estimacion directa", "retencion", "autonomo tax", "rendimientos de actividades economicas", "gastos deducibles", "amortizacion", "minimo personal", "cuota autonomica", or any question about filing or computing income tax for a self-employed or freelance client in Spain. Covers IRPF progressive rates, Modelo 100 structure, estimacion directa normal vs simplificada, deductible expenses, depreciation, quarterly payments (Modelo 130), withholding (retenciones), regional surcharges, personal and family allowances, and interaction with IVA and Social Security. ALWAYS read this skill before touching any Spanish income tax work.
Spain capital gains tax: savings income rates (19%–28%), holding period, main residence exemption, reinvestment relief. Trigger on: "Spain CGT", "capital gains Spain", "Spain savings tax rate", "sell shares Spain", "IRPF capital gains", "Spain property CGT", "Spain investment gains", "Spain 19% capital gains".
Use this skill whenever asked to prepare, review, or classify transactions for a Spanish VAT return (Modelo 303 / IVA autoliquidacion) for a self-employed individual or small business in peninsular Spain or the Balearic Islands. Trigger on phrases like "prepare VAT return", "do the Spanish VAT", "fill in Modelo 303", "IVA", "Modelo 390", or any request involving Spanish VAT filing. Also trigger when classifying transactions for VAT purposes from bank statements, invoices, or other source data. This skill covers peninsular Spain and Balearic Islands only under the regimen general. Canary Islands (IGIC), Ceuta/Melilla (IPSI), regimen simplificado, recargo de equivalencia, RECC cash-basis, VAT groups, and partial exemption (prorrata) are in the refusal catalogue. MUST be loaded alongside BOTH vat-workflow-base v0.1 or later (for workflow architecture) AND eu-vat-directive v0.1 or later (for EU directive content). ALWAYS read this skill before touching any Spain VAT work.
Use this skill whenever asked about Spanish corporate income tax (Impuesto sobre Sociedades, IS), Modelo 200, Modelo 202 (pagos fraccionados), corporate tax rates in Spain, SL tax obligations, company formation tax, deducciones empresariales, bases imponibles negativas (BINs), reserva de capitalizacion, reserva de nivelacion, or foral corporate tax. Trigger on phrases like "Impuesto de Sociedades", "Modelo 200", "Modelo 202", "IS Spain", "corporate tax Spain", "tipo gravamen sociedades", "SL taxes", "nueva creacion", "empresa reducida dimension", "microempresa fiscal", "BINs", "compensacion perdidas sociedad", "pago fraccionado empresa", "ZEC Canarias", "bonificacion Ceuta Melilla sociedades", "I+D deduccion sociedades", "donativos sociedad", "resultado contable", or any question about computing or filing corporate income tax in Spain. ALWAYS read this skill before touching any Spanish corporate tax work.
Use this skill whenever asked about Spanish e-invoicing, factura electrónica Spain, FACe, Facturae, Veri*factu, VERI*FACTU, SII (Suministro Inmediato de Información), AEAT e-invoicing, B2B e-invoicing mandate Spain, RD 1007/2023, RD 238/2026, Ley Crea y Crece, QR tributario, anti-fraud invoicing software, SPFE (Solución Pública de Facturación Electrónica), or any question about issuing, receiving, validating, or archiving electronic invoices in Spain. Also trigger when configuring Veri*factu-compliant billing software, setting up SII real-time reporting, submitting B2G invoices via FACe, or advising on the transition from SII to Veri*factu. This skill covers FACe B2G, SII reporting, Veri*factu anti-fraud system, B2B mandate timeline, accepted formats (Facturae, UBL, CII), mandatory fields, validation rules, archiving, penalties, and interaction with Spanish VAT returns. ALWAYS read this skill before touching any Spanish e-invoicing work.
Use this skill whenever asked about forming, incorporating, or registering a company in Spain. Trigger on phrases like "set up a company in Spain", "SL formation", "sociedad limitada", "Registro Mercantil", "Spanish company formation", "register a business Spain", "CIF Spain", "autónomo societario", "NIF", "escritura de constitución", or any question about starting a business entity in Spain. Covers entity types (SL, SA, autónomo, sociedad civil), registration process, capital requirements, costs, post-formation compliance, and bank account opening. ALWAYS read this skill before advising on Spanish company formation.
ALWAYS USE THIS SKILL when a user asks for help preparing their Spain tax returns AND mentions freelancing, self-employment, autónomo, working por cuenta propia, or independent professional activity. Trigger on phrases like "help me do my taxes", "prepare my Modelo 100", "I'm autónomo in Spain", "I'm a freelancer in Spain", "do my taxes as an autónomo", "prepare my IRPF return", or any similar phrasing where the user is a Spain-resident self-employed individual needing tax return preparation. This is the REQUIRED entry point for the Spain self-employed tax workflow -- every other skill in the stack (spain-vat-return, es-income-tax, es-social-contributions, es-estimated-tax, es-return-assembly) depends on this skill running first to produce a structured intake package. Uses upload-first workflow -- the user dumps all their documents and the skill infers as much as possible before asking questions. Uses ask_user_input_v0 for structured questions instead of one-at-a-time prose. Built for speed. Spain full-year residents only; autónomos (self-employed individuals) only.
Use this skill whenever asked about Spain cryptocurrency or digital asset taxation. Trigger on phrases like "crypto tax Spain", "Bitcoin Spain", "criptomonedas IRPF", "cryptocurrency gains Spain", "crypto income Spain", "staking Spain", "mining income Spain", "NFT tax Spain", "Modelo 721", "Modelo 100 crypto", "rentas del ahorro crypto", "base del ahorro", "AEAT crypto", "Binance Spain tax", "Coinbase Spain tax", "Revolut crypto Spain", "DeFi tax Spain", "Hacienda crypto", "declaración renta criptomonedas", or any question about the income tax, capital gains, or VAT treatment of cryptocurrency, tokens, or digital assets for Spanish tax residents or Spain-source crypto income. Covers IRPF savings base taxation, Modelo 721 foreign crypto reporting, FIFO cost basis, Ley 11/2021 anti-fraud provisions, and DAC8 reporting. ALWAYS read this skill before touching any Spain crypto work.
Prepare a Spain review pack with open Guides
These Guides can help your AI agent draft computations, organize schedules, and prepare a review package. They do not replace a tax preparer or determine your final filing position. The OpenAccountants repo has open Tax Guides, accountant-reviewed where available — run them with your AI agent, then have an accountant review.