Free UK tax calculators for the self-employed
Work out your tax bill, take-home pay, prices and deadlines in seconds. Built for sole traders, landlords, hosts, drivers and side hustlers — plain English, instant answers, and nothing you type ever leaves your device.
Pick a calculator for your work
For every sole trader
Self-employed tax & take-home calculator
Income tax, Class 4 NI, take-home pay and how much to put aside each month.
Making Tax Digital checker
Find out if and when MTD for Income Tax applies to you: 2026, 2027 or 2028.
Universal Credit self-employed reporting dates
Your next assessment periods and the window to report earnings for each.
Construction & trades
CIS tax refund estimator
Estimate the refund (or bill) after CIS deductions, materials and expenses.
Beauty, cleaning & pet care
Hair & beauty price-per-service calculator
Price each treatment to cover products, overheads and a fair hourly wage.
Cleaning job price calculator
Quote a clean that covers wages, supplies, travel and profit.
Dog walking & pet sitting price calculator
Set a per-dog walk price or pet-sitting visit rate that actually pays.
Childcare & tutoring
Childminder take-home calculator
Fees, funded hours and use-of-home costs turned into real take-home pay.
Private tutor hourly rate calculator
Work back from the income you want to the hourly rate you need to charge.
Driving & delivery
Taxi, private hire & delivery driver tax calculator
Mileage rates vs actual vehicle costs: see which saves more tax.
HMRC mileage claim calculator
45p/25p for cars and vans, 24p motorbikes, 20p bikes — your claim in seconds.
Selling online
Vinted, eBay & Depop HMRC checker
Decluttering or trading? Platform reporting, the £1,000 allowance and what to do next.
Property & hosting
Landlord rental profit tax calculator
Tax on rent for 2026/27 vs the new 2027/28 property rates, plus an MTD check.
Airbnb, holiday let & Rent a Room calculator
Rent a Room vs the £1,000 property allowance vs actual expenses — best option highlighted.
Why use these calculators?
Up to date for 2026/27
Every rate and threshold sits in one checked file, so all fourteen tools use the same figures — including Scotland's six bands and the new property rates coming in 2027.
Private by design
No accounts, cookies, trackers or ads. The maths runs in your browser and the numbers you enter are never saved or sent anywhere.
Written for real trades
Not just a generic tax sum: price a clean, a dog walk or a set of lashes, check a CIS refund, plan Universal Credit reports or see if Making Tax Digital applies.
Every result is an estimate to help you plan, not tax advice. For anything complicated, check GOV.UK or speak to an accountant.
Free UK tax deadline reminders
A short, plain email before the dates that matter to the self-employed: the 31 January and 31 July payments, the October registration cut-off and Making Tax Digital quarterly updates. No spam.
Free UK tax deadline reminders and new tools from TaxReadySheets. Unsubscribe any time. See our Privacy page.
Email reminders are launching soon. Until then, our spreadsheets have the 2026/27 deadlines built in.
Plain-English tax guides
Self Assessment deadlines for 2026/27
Every date that matters for the 2026/27 tax year, from registering to payments on account.
Trading allowance vs expenses: which should you use?
When the £1,000 trading allowance beats claiming costs, and when it does not.
Making Tax Digital for Income Tax explained
Who is in, when it starts, what quarterly updates involve and how to get ready.