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CalcuMetro

VAT Calculator

Calculate VAT

Add VAT to a net amount or extract the tax included in a final price. Designed for freelancers, businesses and consumers checking invoices or prices: you only need the amount, the VAT rate and the operation.

Add or remove VAT from an amount

Net amount when adding VAT; VAT-inclusive price when removing it.

Result

Total incl. VAT

€121.00

Net amount
€100.00
VAT amount
€21.00
Rate applied
21%

Formula version: 1.0.0

Rule applied

Country
Spain
Source
VAT Act 37/1992, arts. 90 and 91 (BOE)
Status
Draft — pending review before final publication

How to use the VAT calculator

  1. Enter the amount: the net amount if you're adding VAT, or the final price if you're removing it.
  2. Choose one of Spain's VAT rates or select “Other rate” and enter the percentage.
  3. Choose the operation —add or remove VAT— and review the net amount, VAT and total.

VAT formula

Add: VAT = B × t;  Total = B + VAT · Remove: B = Total / (1 + t)

What each variable means

B
net amount
t
VAT rate as a decimal (21% = 0.21)

To remove VAT you don't subtract the percentage from the total: divide the total by (1 + rate), because VAT was calculated on the net amount, not the total.

VAT calculation example

A €100 net amount at 21% produces €21 VAT: €121 total. Conversely, a €121 VAT-inclusive price has a net amount of 121 / 1.21 = €100.

Illustrative example with the data shown; not a guaranteed outcome.

Assumptions and limitations

  • Preset rates apply to mainland Spain and the Balearic Islands; the Canary Islands (IGIC), Ceuta and Melilla (IPSI) use different taxes.
  • Which rate applies to each product or service depends on the law; check the official source.
  • Amounts are rounded to the cent.

Frequently asked questions

Why can't I subtract 21% from the final price?

Because 21% applies to the net amount, not the total. Subtracting 21% from €121 gives €95.59, not €100.

Does it work for Mexico, Peru or other countries?

Yes, choose “Other rate” and enter the applicable rate. Country-specific rules will be added once verified.

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Indicative result for information only; not financial or tax advice. Read the legal notice · How we calculate results

Spotted a possible error in this calculator? Let us know