VAT, GST & SALES TAX CALCULATOR
Add tax, remove it, or work back from the tax amount. Sumadillo gives you the net, tax and total at your chosen rate — free, right in your browser.
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Net amount
€100.00
Rounded to two decimal places. Net + Tax = Gross.
Calculating back from a tax amount gives a mathematical approximation, not conclusive evidence of the original invoice.
How your result is calculated.
Net = Gross ÷ (1 + Tax rate ÷ 100)
€119.00 ÷ 1.19 = €100.00A QUICK EXPLANATION
One amount, one tax rate.
These examples use 19%.
Divide the gross amount by (1 + tax rate ÷ 100). At 19%, Net = Gross ÷ 1.19. The included tax is Gross minus Net.
€119 gross contains €100 net and €19 tax. Simply subtracting 19% of the gross price would be wrong: the tax rate applies to the net amount.
Formula and rounding →Multiply the net amount by tax rate ÷ 100. Add the tax, rounded to two decimal places, to the net amount: Gross = Net + Tax.
At €100 net and 19%, tax is €19 and gross is €119. At an example rate of 7%, tax is €7 and gross is €107.
Rounding explained →Divide the tax amount by tax rate ÷ 100: Net = Tax amount ÷ (Tax rate ÷ 100). The rate must be greater than 0%.
An already rounded tax amount does not identify the original net amount uniquely. In that case, the reverse calculation is an approximation.
Limits of reverse calculation →Enter your own tax rate from 0 to 100%, with up to two decimal places. The examples do not determine the correct rate for your situation. Currency and language do not select a tax rate.
QUICK REFERENCE
Illustrative rates, shown in EUR. The same arithmetic applies to every supported currency.
| Tax rate | Net | Tax | Gross |
|---|---|---|---|
| 19% | €84.03 | €15.97 | €100.00 |
| 7% | €93.46 | €6.54 | €100.00 |
GOOD QUESTIONS. CLEAR ANSWERS.
Content reviewed:
Net is the price excluding the tax being calculated. Gross includes that tax: Gross = Net + Tax. At €100 net and a tax rate of 19%, the gross price is €119.
Using Sumadillo’s rounding method, €100 gross at 19% contains €84.03 net and €15.97 VAT. Divide 100 by 1.19 to get 84.0336…, round net to €84.03, then subtract it from €100.
No. Sumadillo calculates percentage-based tax for a single monetary amount. Income tax on wages, tax classes, health insurance and other social security contributions are not included. To calculate your take-home pay, you need a salary calculator.
It applies a percentage-based tax to a net amount, removes it from a gross amount, or calculates back from a tax amount. Net + Tax = Gross. This can be useful for VAT or similar percentage calculations, provided that a single rate applies to the full net amount.
No. Enter the percentage that applies to your calculation. The initial 19% and the 7%, 19% and 20% preset buttons are examples only, not recommendations or country-specific rules. Verify the rate and the tax treatment with the relevant authority or a qualified adviser.
No. Selecting 0% simply calculates an amount without adding tax. Whether a transaction is exempt or subject to a special rule depends on the applicable law. The calculator does not assess that.
Sumadillo calculates a single amount at a single tax rate. When you enter a gross amount, the net amount is rounded to cents first; the tax is the remainder of the gross amount. Invoices with multiple line items, mixed rates or a different rounding method may differ. Reversing a calculation can produce a different result because of cent rounding.
Yes. Choose any rate from 0 to 100% with up to two decimal places, for example 20%, 8.1% or 0%. The initial 19% and the preset buttons are examples only. You are responsible for selecting the rate and checking the rules that apply to your case.
No. EUR, USD, GBP and CHF are currency labels for the calculation. Changing the selection leaves the numeric amount unchanged; no exchange rate is applied. All results use two decimal places. Country-specific rounding or cash-payment rules are not applied. The static examples on this page are shown in EUR.
A calculation aid, not tax advice or a guarantee of the tax treatment of your particular case. Check the tax rate, circumstances and invoice. Country-specific rules, mixed rates, compound taxes, margin schemes and tax deductions are not assessed. Calculation and limitations in detail →
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