Tools · Free · No sign-up
Eight purpose-built calculators for UK founders and employers. Estimate take-home pay, startup costs, profit margins, minimum wage compliance, dividend tax, VAT, employer NI and your Self Assessment bill.
Most online calculators bury you in adverts or assume you already know the answer. These don't — each one explains its assumptions, links to the official HMRC source, and works for the most common UK setups.
Pre-launch
Startup cost
Estimate the total capital you need to launch — setup costs, monthly running costs, and a cash buffer.
OpenPricing
Profit margin
Calculate gross and net profit margins, or work out the selling price you need to hit a target margin.
OpenMost popular
Take-home pay
Compare what you'd keep as a sole trader vs a limited company on the same revenue.
OpenEmployers
Minimum wage checker
Check whether hourly pay meets the 2026/27 National Living Wage and National Minimum Wage age bands.
OpenLtd directors
Dividend tax
Work out the tax due on dividends from your limited company, including the £500 allowance.
OpenVAT-registered
VAT (inc / ex)
Add or remove VAT at standard, reduced or zero rates. Handles flat-rate scheme too.
OpenHiring
Employer NI
Estimate the National Insurance you'll pay when you hire your first employee.
OpenSole traders
Self Assessment
Estimate your Self Assessment bill plus any payments on account due in January.
OpenTax calculators use stated 2026/27 HMRC rates and assumptions for England, Wales and Northern Ireland unless otherwise noted. Scottish income tax bands and individual circumstances can change results. Estimates only, not tax advice.
Partner offers
Promotions are independently checked against provider terms. We may receive a referral fee if you sign up, at no extra cost to you.
Business banking
Reader offerTide Business Account
Up to £200 cash
£75 after at least £100 of eligible Tide card transactions in 30 days, plus £125 when the separate Tide Instant Saver milestone is met.
REFER200New customers only. Terms, eligibility and payment timing apply.
Business credit card
Reader offerCapital on Tap Business Credit Card
7,500 bonus points
7,500 bonus points after a completed qualifying card or cash transaction in the three months after approval, subject to Capital on Tap’s current partner terms.
SETTINGUP18+, UK-resident qualifying company applicants. Credit subject to status and affordability.
18+ and UK requirements apply. Tide: £75 after at least £100 of eligible Tide card transactions in 30 days, plus £125 when the separate Tide Instant Saver milestone is met. New customers only. Terms, eligibility and payment timing apply. Capital on Tap: 7,500 bonus points after a completed qualifying card or cash transaction in the three months after approval, subject to Capital on Tap’s current partner terms. 18+, UK-resident qualifying company applicants. Credit subject to status and affordability. We may receive a commission if you sign up; it does not change the provider’s offer or pricing.