🧪 Forms 349, 390, 347 in Beta · Included in all plans — preview for your accountant. 369 OSS and 303 in production. Learn more →
369 OSS · 303 — Production · 349 · 390 · 347 in Beta
Forms 369 and 303 in 60 seconds.
Upload your Amazon Seller Central reports and download AEAT forms ready to file at the Spanish Tax Agency portal. Free during Beta. No accountant. Zero errors.
● Compliant with Spanish VAT Act and EU OSS Directive
● Data on EU servers
You in control
not an accountant
not an Excel sheet
0 errors
across thousands of formulas
full AEAT validation
60 sec
per filing
upload reports and done
✓ BOE format validated
✓ EU servers
✓ GDPR compliant
✓ No credit card
Three steps. No accountant.
From your Amazon file to a filing-ready AEAT form.
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Step 01
Upload your Amazon reports
You need two reports from Seller Central: the Payments Report (Payments → All statements → Download report V2) and, if you sell to other EU countries, the VAT Transactions Report (Reports → Fulfilment by Amazon → Amazon VAT Transactions Report). You can upload multiple files at once and FBAtax detects missing periods.
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Step 02
FBAtax processes and calculates
We handle everything automatically: detecting which sales go to Form 303 (Spain) vs Form 369 (other EU countries). You just upload the file.
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Step 03
Download and file
You get an Excel file with every line ready to paste into the AEAT portal. No middlemen. No transcription errors.
Every form. One place.
Generated automatically from your Amazon files.
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Form 303Production
Quarterly VAT
Spanish domestic sales, Amazon LU fees, advertising. Boxes calculated to the cent.
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Form 369Production
OSS · Union Scheme
B2C sales to all 27 EU countries. By EMID, by country, by VAT rate. AEAT TXT file.
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Form 349Beta · preview
Intra-Community
Excel preview with Amazon LU fees + detected B2B intra-EU. Other suppliers: add manually.
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Form 390Beta · preview
Annual Summary
Excel preview with sum of the 4 quarters of Form 303. Form 390-specific boxes not yet.
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Form 347Beta · Amazon only
Third-party Transactions
Only computes Amazon Online Spain. Other suppliers >€3,005 must be added manually.
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Form 130In development
Quarterly Income Tax
Self-employed quarterly payment. In development — do not use yet.
Free during Beta.
We want real users before we charge. Try with no limits. If it helps you, tell someone.
Report a real bug or refer someone who signs up and we give you 1 month of Pro access. Email us →
Frequently asked questions
Which reports do I need from Amazon?
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Does it work with OSS / One-Stop Shop?
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Why does my taxable base not match the sum of sales?
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Is the generated TXT valid for filing at AEAT?
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Can I use FBAtax with warehouses in multiple countries (Pan-EU)?
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What does Beta mean for a form?
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What is the scope of Form 303?
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Does Form 347 detect all my suppliers?
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Your Q2 2026 is waiting.
Process for free. No card. No lock-in.
⚠ Important tax notice FBAtax is a calculation software tool, NOT a tax advisory service. Results are indicative and must be verified before any official filing. FBAtax does not file returns with AEAT and assumes no liability for penalties arising from incorrect filings. Consult a qualified tax advisor and always verify at the AEAT Electronic Office. View full terms →