Value-added tax calculations trip people up in two directions — adding VAT on top of a net price versus figuring out how much VAT is already baked into a gross price — and the second one isn't simply multiplying by the rate.
This calculator handles both directions correctly: adding VAT multiplies the net price by (1 + rate), while extracting VAT from a gross price divides by (1 + rate) first to find the net amount, then calculates the difference as the VAT portion.
This distinction matters because a common mistake is treating a VAT-inclusive price the same way as a VAT-exclusive one, which produces a VAT amount that's too high — always confirm which direction you're calculating before reading the result.
Because everything runs locally in your browser, results appear instantly and nothing you type or upload is ever sent to a server.
Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
Frequently asked questions
Why can't I just multiply the gross price by the VAT rate to find the VAT amount?
Because the gross price already includes VAT, multiplying it directly by the rate overstates the VAT portion — you need to first divide by (1 + rate) to find the net price, then subtract from the gross.
What VAT rate should I use?
VAT rates vary by country and sometimes by product category — check your local tax authority's current rate for the specific goods or services involved.