Short answers about access, signing in and your figures. Still stuck? Use the Contact link at the bottom of the page.
Your access lasts for the tax year you buy in, up to 5 April. For example, if you buy on 10 October 2026, you get access for the 2026/27 tax year, and it ends on 5 April 2027.
Your access ends on 5 April. To keep using the tool, buy again for the new tax year. That gives you access for the whole of the new tax year, with its new rules applied. Anything you saved to a file stays yours.
Yes, within your tax year. The tools include any Budget updates for the tax year you bought. You do not pay extra for updates during that year.
See the refund policy. When you pay you ask for immediate access, and you lose your 14-day right to cancel once access begins.
No password. Use the email you bought with and we email you a sign-in code. The first time, paste in the licence key from your receipt.
Search your inbox for the receipt email from your purchase. The key is in it. If you still cannot find it, use the Contact link at the bottom of the page.
Yes. Sign in with the same email on any device. Your numbers stay on the device you typed them into, so save a file and load it on the other device if you want your figures there too.
Your numbers stay on your device. Nothing you type into a tool is uploaded. The only things we hold are your email address and your licence key, so we can let you in.
Every tool keeps your numbers in your browser, so clearing it would remove them. Use the save button in the tool now and then to download a file, and load the file back in whenever you need it, on any device.
No. Your pay, pension, student loan and children are saved on your device and you can use them in your other tools with 1 button. They stay on the same device and browser, and nothing is uploaded.
Yes. Each tool can download a summary of your results, and you can print them or save them as a PDF.
No. It is general information. The tools show how published UK rules apply to the figures you enter. You make your own decisions. Sums & Tax is not authorised by the Financial Conduct Authority.
Not yet. The tools use the rules for England, Wales and Northern Ireland.
No. It does not file anything or send anything to HMRC. It helps you see how the rules work on your figures. Check the official rules on gov.uk or speak to a qualified adviser before acting.
From published UK rules for the current tax year, including any Budget updates. The salary slider on the home page is an estimate for England, Wales and Northern Ireland. It uses employee National Insurance only, with no pension, student loan or tax code adjustments. Check the official rules on gov.uk for anything that matters to you.