About QuidTools

QuidTools is a growing set of free money calculators made for people in the UK, covering pay, tax, property and everyday sums. We have 32 calculators today and add new ones regularly.

What makes us different

• UK first. Pounds sterling, current HMRC tax bands, stamp duty rules for England and Northern Ireland, Scottish income tax and student loan plans.
• We show our working. Every tool explains the formula behind the answer, with worked examples, so you can check it yourself.
• Private by design. All calculations run in your browser. We never see the numbers, text or images you enter.
• Kept up to date. Tax and property figures are reviewed whenever HMRC or the government changes them. Our money tools currently use 2026/27 rates.

A note on accuracy

We work hard to keep every calculator correct, but results are estimates for guidance and are not financial, tax or legal advice. For important decisions, check with HMRC, GOV.UK or a qualified professional.

Get in touch

Spotted a mistake or want a new tool? We’d love to hear from you on our contact page.