Enter your own figures to calculate discount with straightforward finance maths and clearly visible assumptions.
Inputs
This topic also has a deeper guide and a printable reference pack, so you can move from the live answer into the method, assumptions, and worked examples without leaving the topic cluster.
A practical guide to markup, margin, discounting, ROI, and break-even thinking that keeps the definitions separate so pricing decisions are not distorted by similar-looking percentages that mean very different things.
A timeless guide to adding and removing VAT with editable rates, written to stay useful as a formula reference rather than a fixed legal statement about any one tax regime.
A clearer pricing sheet for markup, margin, discounting, and price logic, built to stop common denominator mistakes before they distort commercial decisions.
A stronger workbook-style pack for ROI, break-even thinking, contribution per unit, and practical commercial comparisons where volume and return both matter.
These are the main values the calculator uses. Keep the units consistent and, where relevant, match the assumptions explained in the related guide.
Unit: GBP
Enter the value using the unit shown on the field.
Unit: %
Enter the value using the unit shown on the field.
Use this calculator when you need a discount estimate from values you control yourself.
The main result appears first, with supporting figures underneath to make the calculation easier to check and compare.
These calculators apply the mathematics shown on the page only. Fees, taxes, regulation, and commercial terms should be handled separately unless you enter them explicitly.
Use the Markup Calculator to work out markup from values you control yourself, without baked-in policy assumptions.
Work out gross profit, profit margin, and markup from the selling price and cost you enter.
Add VAT to a net amount using an editable rate that you control rather than a hardcoded tax assumption.
Remove VAT from a gross amount using an editable rate so the tool stays useful even when tax assumptions change.