Three free calculators for 2026/27 UK tax rates, written by an accountant. One compares a limited company with being a sole trader. Another works out tax for individual landlords, including mortgage interest relief and the April 2027 rate rise. The third compares the HMRC flat rate with your actual costs for working from home. All show the full result with no sign-up, except the optional email copy.
Enter your profit and see what you keep as a sole trader and as a limited company, with income tax, National Insurance, corporation tax and dividend tax shown line by line. It also covers the benefits of a company that tax figures miss.
Best for: sole traders and freelancers deciding whether to incorporate.
List your rental income and expenses, apply mortgage interest relief and the £1,000 property allowance, and see your estimated bill for 2026/27 and 2027/28.
Best for: individual landlords with one or more let properties.
Compare the HMRC flat rate with a share of your actual household bills, for sole traders and company directors, and see which claim is worth more.
Best for: anyone who works from home.
Each one uses published 2026/27 rates and thresholds, with sources listed on the page. The figures update as you type, nothing you enter is stored, and every result is an estimate. Each page explains what it leaves out. Where the answer depends on your circumstances, talk to us and we will run your actual figures.
Yes. All the calculators are free and show the full result straight away. The use of home calculator offers an optional email copy of your results, but you never have to give an email address to see them.
The 2026/27 tax year, which runs from 6 April 2026 to 5 April 2027. The landlord calculator also shows 2027/28, so you can see the effect of the property income rate rise from 6 April 2027.
No. They are estimates from published 2026/27 rates and the figures you enter. They leave out some things, such as VAT, student loans and Scottish income tax bands, and each page lists what is excluded. Ask an accountant before acting on a result.
No. They use the income tax rates for England, Wales and Northern Ireland, so a result for a Scottish taxpayer would be wrong.
We will run your actual numbers and tell you what fits. The first conversation is free.
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