Two free calculators for 2026/27 UK tax rates, written by an accountant. One compares a limited company with being a sole trader. The other works out tax for individual landlords, including mortgage interest relief and the April 2027 rate rise. Both show the full result with no sign-up.
Limited company vs sole trader calculator
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.
Landlord tax calculator
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.
How these calculators work
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.
Frequently asked questions
Want your own figures checked?
We will run your actual numbers and tell you what fits. The first conversation is free.
Book a free consultation Call 07534 476727