Calcs4All

APR 23 · 2026

VAT calculator

Calculate VAT amount and gross total from a net price.

What this calculator covers

Calculate the VAT amount and gross total from a net price and a flat VAT rate.

The walkthrough keeps the tax math visible so users can see exactly how the rate changes the final billed total.

Frequently asked questions

What is the difference between VAT and sales tax?
VAT (value added tax) is collected at each stage of the supply chain, with businesses remitting only the tax on the value they added. Sales tax is typically collected once at the final point of sale. This calculator handles the simpler case: a flat rate applied to one net price.
Does this calculator work for reverse VAT (gross to net)?
No. It calculates VAT on top of a net price to produce the gross total. To back out the net from a gross price, divide the gross by (1 + VAT rate / 100).
Can I use this for reduced or zero-rated VAT goods?
Yes — just enter the applicable rate. If an item is zero-rated, set the rate to 0 and the VAT amount will be zero with the gross total matching the net price.
Does the calculator handle VAT exemptions or reverse-charge rules?
No. It applies a single flat rate to a single net price and does not model exemptions, input tax credits, or reverse-charge mechanisms used in B2B cross-border transactions.

Tool

Run the calculation

$
%

RESULT · VAT

â„–026

Primary result

$120.00

VAT on $100.00 at 20% is $20.00, for a gross total of $120.00.

VAT amount
$20.00
Gross total
$120.00

Step-by-step solution

  1. 1.Convert 20% to a decimal rate: 0.2.
  2. 2.Multiply the net price $100.00 by the decimal VAT rate to get $20.00.
  3. 3.Add VAT to the net price to get a gross total of $120.00.

Walkthrough

Visual walkthrough

VAT is a percentage charge added to the net price to produce the gross amount paid or billed.

  1. 01

    Convert the VAT rate

    20% ÷ 100 = 0.2

    The rate is easier to apply once it is written as a decimal multiplier.

  2. 02

    Calculate the VAT amount

    $100.00 × 0.2 = $20.00

    This isolates the tax portion that sits on top of the net amount.

  3. 03

    Build the gross total

    Add the VAT amount back to the net price to reach the final gross price.

    $120.00 gross total