All calculators
Self-Employed Tax Calculator
Estimate the Income Tax and National Insurance due on your self-employed profit for the year.
OpenGross annual salary£Take-Home Pay Calculator
Estimate your take-home pay from a salary after Income Tax and employee National Insurance.
OpenTotal amount to extract this year£Salary & Dividend Calculator
For limited company directors: compares take-home pay across a few common ways of splitting salary and dividends.
OpenCompany taxable profit for the year£Corporation Tax Calculator
Estimate the Corporation Tax on your company’s profit, including marginal relief.
OpenAmount£VAT Calculator
Add VAT to a net price or strip it out of a gross price, at the 20% standard or 5% reduced rate.
OpenTotal gain£Capital Gains Tax Calculator
Estimate the Capital Gains Tax due on a gain, after your tax-free annual exempt amount.
OpenProperty price£Stamp Duty Calculator
Estimate the Stamp Duty Land Tax (SDLT) due on a residential property purchase in England or Northern Ireland.
OpenDay rate£IR35 Status & Take-Home Estimator
A rough, illustrative comparison of take-home pay working inside and outside IR35, based on your day rate and days worked.
OpenGross annual salary£True Cost of a Hire
What an employee really costs once employer’s NI, pension, equipment and recruitment are added to the salary.
OpenSacrificed a year£Salary Sacrifice Calculator
What pension sacrifice saves you and your employer, and what the 2029 cap changes.
OpenAmount you are spending£Capital Allowances Calculator
Full expensing, Annual Investment Allowance or writing down: which applies, and what it saves.
OpenQualifying R&D spend£R&D Tax Credit Calculator
Estimate an R&D claim under the merged scheme, or Enhanced R&D Intensive Support if you qualify.
OpenRateable value£Business Rates Calculator
Your 2026/27 bill from the rateable value, including small business rate relief and the taper.
OpenCost of the goods£Import Duty & VAT Calculator
Duty, import VAT and the real landed cost, including the VAT charged on the duty.
OpenCould you tell me last month’s profit right now, without asking anyone?YesI’d have to work it outNoDo 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 yourself2026/27Self Assessment, VAT, PAYE, Corporation Tax, Companies HouseKey Tax Dates 2026/27
Every UK tax deadline for the year on one page.
See the tax calendarThese are estimates
Every calculator here is for general guidance only. 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.
Talk to us about your figures
Call or WhatsApp 07476 989568 or email hello@buzzaccounting.co.uk
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