How to use the equivalence surcharge calculator

Calculate in four steps the total amount you pay your supplier as a retail trader under the equivalence surcharge regime.

Enter the net purchase amount

Type the net invoice amount before taxes — the price agreed with your supplier before VAT and surcharge.

Select the VAT tier

Choose the VAT rate for the goods you are buying: 21% (standard), 10% (reduced), 4% (super-reduced) or tobacco.

Check the breakdown

The calculator instantly shows the VAT, the equivalence surcharge and the total amount payable to your supplier.

Remember: no Form 303

Under this regime your supplier handles all VAT obligations. You do not file quarterly VAT returns and cannot deduct input VAT.

Why use this equivalence surcharge calculator

Free tool for retail traders under the equivalence surcharge regime in Spain.

Always up-to-date rates

Verified rates: 5.2% (21%), 1.4% (10%), 0.5% (4%) and 1.75% (tobacco). Official AEAT data, current for 2026.

Full breakdown

See at a glance the net amount, VAT, surcharge and total you pay your supplier on every purchase.

Compliance made easy

Understand exactly what each supplier invoice includes and verify amounts are correct under the LIVA.

Frequently asked questions about the equivalence surcharge

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Invoo is the invoicing software that connects freelancers and retail traders with their accountant in real time. VAT, equivalence surcharge and Verifactu without the hassle.