How to use the invoice calculator

Calculating your invoice total including VAT and IRPF is easy with our free tool:

Choose your starting point

Select whether you are starting from the base amount, the total with VAT, or the net amount you want to receive.

Enter the amount

Type the amount in euros. You can use decimals with comma (1,234.56) or period (1234.56).

Select VAT and IRPF

Choose the VAT rate for your activity and the corresponding IRPF withholding rate.

Get the breakdown

You will see the complete breakdown: base, VAT, invoice total, IRPF withholding, and the net you will receive.

Understanding VAT & IRPF on invoices

Two different taxes that affect your invoices in distinct ways:

VAT: Business invoices

When invoicing businesses with tax ID, you apply VAT (21%, 10%, or 4%). They deduct it, you declare it quarterly in Form 303. It is neutral for both parties.

VAT: Individual invoices

You also apply VAT to individuals (with ID number), but they cannot deduct it. You declare it the same way in Form 303 each quarter.

IRPF: Only business invoices

IRPF withholding (7% or 15%) only applies when invoicing businesses. It is an advance on your income tax — what they withhold now is deducted later in your tax return.

IRPF: Nothing for individuals

Invoices to individuals do not include IRPF withholding. You receive the full total (base + VAT) without withholdings. Then you declare your annual income in your tax return.

Why use our calculator?

Designed for freelancers who want to invoice without errors or doubts.

Instant calculation without errors

VAT, IRPF, and net to receive calculated instantly. All 2026 tax rates included. From base, total, or desired net — no Excel, no rounding mistakes.

Withholdings the tax office would approve

Exact calculation on base amount — as required by the AEAT. 15% standard, 7% new freelancers, 0% individuals. No confusion, no inspections.

And when you invoice, everything is calculated

This calculator is from Invoo, the software that calculates VAT and IRPF automatically on every invoice. You enter the amount — we do the math and send the invoice. No thinking, no doubting.

Frequently asked questions about invoices with VAT & IRPF

Stop calculating. Start invoicing.

With Invoo you invoice in 30 seconds — VAT and IRPF calculated automatically, client invoiced instantly, accountant connected in real-time. €10.90/month, all included.