Pricing and Commercial Maths
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.
Enter your own figures to calculate break-even units 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 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: GBP
Enter the value using the unit shown on the field.
Unit: GBP
Enter the value using the unit shown on the field.
Use this calculator when you need a break-even units 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.
Use the Discount Calculator to work out discount from values you control yourself, without baked-in policy assumptions.
Calculate a fixed-payment loan from the amount borrowed, rate, and term, using only the values you enter.
Estimate a standard repayment mortgage from property price, deposit, rate, and term with clear monthly costs and supporting figures.