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TaxFactory Business Blog

Tips and guides for your journey

30 published guides

Two opposing contract folders on a slate desk, no text
19 min read

TRADE or employment contract: decide without creating a bogus self-employed worker

How to choose between TRADE and an employment contract in Spain without creating a bogus self-employed worker: legal tests, formalities and inspection risks.

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Split quarterly calendar beside a debt folder and a liquidity jar, no text
17 min read

Deferring a Spanish tax debt without wrecking your quarter

When to ask the AEAT for a deferral or instalment plan so model 303, model 130 and quarterly liquidity do not collapse together.

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Business owner reviewing an official tax notification beside organised accounting documents
15 min read

What to Do When You Receive an AEAT Letter

A practical guide for Spanish freelancers and businesses who receive an AEAT notification or request and need to respond carefully.

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Small business desk with an employment contract, onboarding checklist, ID card and laptop
7 min read

Hiring your first employee in Spain

A practical workflow for freelancers and small businesses hiring their first employee in Spain, based on official guidance.

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Laptop with invoicing software, digital records, verification code and VERI*FACTU compliance cues
8 min read

SIF and VERI*FACTU in Spain

A practical guide to SIF and VERI*FACTU for freelancers and small businesses preparing compliant invoicing systems in Spain.

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Editorial workspace with a quarterly calendar, calculator, invoices and tax documents for VAT and IRPF filing
7 min read

Quarterly VAT and IRPF checklist

A pre-filing checklist for Spain quarterly VAT Modelo 303 and IRPF Modelo 130, with AEAT 2026 deadlines and review steps.

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