About PayPrompt

PayPrompt is a collection of free calculators for pay, pensions, property, tax and savings. There is no sign-up and no account, and every calculation runs in your browser.

How accuracy is kept

• Rules and rates come only from official sources, such as government guidance, and each calculator links to them.
• Calculators are tested against the worked examples that governments publish.
• Where a rule is unclear, the calculator says so rather than guessing.
• Every page is dated. Rules were last checked 13 October 2026.

What the calculators cannot do

Results are general information, not financial, tax or legal advice. They cannot account for every personal circumstance, and rules can change. Check the linked official sources, or speak to a qualified adviser, before making a decision.

Your privacy

Nothing you type is sent or stored. Read the privacy page for details, or browse the UK calculators.

Contact PayPrompt to report an error, suggest a calculator or ask about the site.