True Cost of a Hire
What an employee really costs once employer’s NI, pension, equipment and recruitment are added to the salary.
Cost up a hire
Free tools
Quick UK tax calculators.
Free, no-signup calculators to help you get a rough feel for a tax question before you talk to us properly. They're built for general guidance, not personalised advice — every one links through to Buzz if you want the real answer for your situation.
Pick a calculator
Free calculators covering the questions we get asked most
Do You Know Your Numbers?
A ten-question scorecard on what you can actually see in your business — profit, margin, cash, break-even — and what you cannot.
Score yourself
VAT Calculator
Add VAT to a net price or strip it out of a gross price, at the 20% standard or 5% reduced rate.
Use the VAT calculator
R&D Tax Credit Calculator
Estimate an R&D claim under the merged scheme, or Enhanced R&D Intensive Support if you qualify.
Use the R&D calculator
Salary Sacrifice Calculator
What pension sacrifice saves you and your employer — and what the 2029 cap changes.
Use the salary sacrifice calculator
Business Rates Calculator
Your 2026/27 bill from the rateable value, including small business rate relief and the taper.
Use the business rates calculator
Capital Allowances Calculator
Full expensing, Annual Investment Allowance or writing down — which applies, and what it saves.
Use the capital allowances calculator
Import Duty & VAT Calculator
Duty, import VAT and the real landed cost — including the VAT charged on the duty.
Use the import duty calculatorTake-Home Pay Calculator
Estimate your take-home pay from a salary after Income Tax and employee National Insurance.
Use the take-home calculator
Corporation Tax Calculator
Estimate the Corporation Tax on your company's profit, including marginal relief.
Use the Corporation Tax calculatorIR35 Status & Take-Home Estimator
A rough, illustrative comparison of take-home pay working inside vs outside IR35, based on your day rate and days worked.
Use the IR35 calculator
Salary & Dividend Calculator
For limited company directors — compares take-home pay across a few common ways of splitting salary and dividends.
Use the salary & dividend calculatorStamp Duty Calculator
Estimate the Stamp Duty Land Tax (SDLT) due on a residential property purchase in England or Northern Ireland.
Use the stamp duty calculatorCapital Gains Tax Calculator
Estimate the Capital Gains Tax due on a gain, after your tax-free annual exempt amount.
Use the capital gains calculator
Self-Employed Tax Calculator
Estimate the Income Tax and National Insurance due on your self-employed profit for the year.
Use the self-employed calculator
Key Tax Dates 2026/27
Every UK tax deadline for the year — Self Assessment, VAT, PAYE, Corporation Tax and Companies House — on one page.
See the tax calendar
Worth saying clearly
These are estimates, not advice
Every calculator here is for general guidance only, not personalised tax advice. Real numbers depend on your full circumstances — other income, reliefs, timing, location and plenty else. If a number here matters to a real decision, talk to Buzz first.
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