The price that still leaves your margin

For small online sellers and freelancers in the UK and EU. Work out what to charge after VAT, platform fees, and the margin you want — then see where the money goes.

Open the Price Builder

All Calculators

Choose a calculator to get started — all free, no signup required.

Pricing

Price Builder

Set a price that still hits your margin after VAT, platform fees, and payment fees.

Margin Calculator

Calculate profit margin from revenue and cost. See profit and margin percentage.

Markup Calculator

Calculate markup percentage from cost and price, or find selling price from a target markup. Works for retail, wholesale, and any industry.

Discount Calculator

Calculate the discount amount and final price after applying a percentage discount.

Margin to Markup Converter

Convert between margin and markup instantly. See the equivalent percentage and a full conversion table.

Profit Calculator

Calculate profit, selling price, and margins from cost and revenue. Three flexible input modes.

VAT & Tax

VAT Calculator

Add or remove VAT from any amount instantly. Supports UK, EU, and international VAT rates.

Add VAT Calculator

Quickly add VAT to any net amount. See the VAT amount and gross total instantly.

Remove VAT Calculator

Extract VAT from a gross price. See the original net amount and VAT paid.

Business

Break-even Calculator

Find out how many units you need to sell to cover your costs and start making profit.

Commission Calculator

Calculate sales commission earned and net amount. Supports percentage-based commissions.

Percentage Change Calculator

Calculate the percentage increase or decrease between two numbers, or find the new value after applying a percentage change.

Why CalcBase?

Instant Results

Calculations update in real time as you type. No page reloads, no waiting.

Accurate & Transparent

Every calculator shows the formula used and step-by-step breakdowns so you can verify results.

International Support

Built-in VAT rates for the UK, EU, Australia, Canada, and more. Works for any currency.

Built for Business

Focused on the calculations businesses actually need — margins, markup, VAT, and break-even analysis.

Powerful Features

More than a calculator — tools designed for how you actually work.

Shareable Links

Share any calculation with pre-filled values. Recipients see exactly what you calculated.

Export to PDF & CSV

Download results as a professional PDF summary or a spreadsheet-ready CSV file.

Calculation History

Your recent calculations are saved locally so you can quickly revisit them from the search bar.

Learn the Fundamentals

Short, practical guides that explain the formulas and concepts behind each calculator.

VAT Explained

What VAT is, how it works, and how it differs from sales tax.

VAT Rates by Country

Complete 2026 reference of VAT and GST rates for major economies.

VAT vs Sales Tax

Key differences between VAT and sales tax explained simply.

Margin vs Markup

The crucial difference and why confusing them costs money.

How to Price a Product

Pricing formulas, strategies, and common mistakes to avoid.

Pricing Strategy Guide

Cost-plus, value-based, competitive, and premium pricing.

How to Calculate ROI

ROI formula, worked examples, and common pitfalls.

Discount Impact on Margin

How discounts destroy profit and how much more you need to sell.

How to Calculate Discount

Percentage discounts, stacking, and reverse calculations.

Break-even Formula

Fixed costs, variable costs, and finding your break-even point.