Discount & VAT Calculator
Discount, sales tax and final price in one pass — VAT included or excluded, all in your browser
Examples
Invoice with KDV
1,000 net · 10% discount · 20% VAT · excludes VATNet 900.00 · VAT 180.00 · Final 1,080.00VAT is charged on the discounted net — the taxed base is what you actually pay for.
What's inside the sticker price
199.90 gross · 19% VAT · includes VATNet 167.98 · VAT 31.92 · Final 199.90Extraction divides by (1 + rate); adding 19% on top would double-count the tax.
About this tool
Prices come in two conventions: net prices that exclude VAT (B2B quotes, US sales tax) and gross prices that already include it (EU/TR retail tags). This calculator computes the full chain — discount, net, VAT, final — in either direction, charging tax only on money actually spent.
The breakdown shows every step so the arithmetic is auditable, plus an effective-change figure that reveals what a 'discount' really costs once tax is applied. Presets cover TR KDV 20%, EU 19% and UK 20%.
How to use
Enter the listed price
Type the price as printed on the tag, quote or invoice line.
Pick the convention
Excludes VAT if tax is added on top; Includes VAT if the tag already contains it.
Apply discount and VAT
Use presets or custom percentages; discount always applies before tax.
Read or export
Review the step-by-step breakdown; quantity multiplies the unit figures for line items.
Use cases
Invoice checking
Verify that a supplier's VAT line matches the net, discount and rate you agreed.
Cross-border pricing
Compare a TR KDV-inclusive tag against a US-style pre-tax quote on equal footing.
Common mistakes
Mistake:Adding VAT on top of an inclusive price
Fix:Switch to 'Includes VAT' — the tool separates the tax instead of stacking it twice.
Mistake:Computing VAT on the pre-discount amount
Fix:The discount applies first; the schedule reflects what receipts actually do.
Frequently asked questions
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References & standards
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