Free tools
Free UK tax calculators for business owners
We built these to answer the questions UK business owners actually ask us: what is my real take-home pay, how much salary versus dividend, what does an extra hire cost, and how much CGT will I pay on the exit. All numbers reflect 2026/27 rates and thresholds, no sign-up, and you can always skip straight to the number.
Ask an accountant about your figureRun one now
The five most business owners open first
Pick a tab and the calculator loads in place. Every figure is 2026/27, and nothing you type leaves your browser.
Prefer the full page for one of these? Open the salary and dividend optimiser
All calculators
21 calculators, grouped by the decision they answer
Business structure & incorporation
Pay & dividends
Salary & Dividend OptimiserFind the most tax-efficient mix of salary and dividends for a UK limited company director. 2026/27 rates.Dividend Tax Calculator 2026/27Work out your dividend tax bill at the new 2026/27 rates (10.75%, 35.75%, 39.35%) and see exactly how much more you pay than under the 2025/26 rates.Pension Contribution OptimiserEmployer pension contributions reduce corporation tax. See the real cost to your company and whether pension beats taking the same money as dividend.
Employment & payroll
Take-Home Pay CalculatorGross salary in, annual, monthly and weekly net out. 2026/27 income tax, NI, student loan and pension salary sacrifice.Employer NI & Cost-to-HireFull annual employment cost across your payroll with employer NI at 15%, Employment Allowance offset, and 3% auto-enrolment pension.CIS Subcontractor Deduction CalculatorSee what a contractor will deduct from your CIS invoices at 20% or 30%, your monthly take-home after deductions, and a year-end estimate of the refund you are likely due.P11D & Benefit in Kind CalculatorWork out the taxable value of company cars, fuel, vans, beneficial loans and private medical cover for 2026/27, plus the employee tax and employer Class 1A NIC due.
VAT & MTD
VAT Scheme ComparatorStandard vs Flat Rate: run your turnover and input VAT to find out which scheme saves you money and whether the Limited Cost Trader rule forces you to 16.5%.VAT Registration Threshold CheckerRun your turnover through the rolling 12-month and 30-day tests against the £90,000 threshold. See if you must register, the month you breach, and your exact register-by date.MTD ITSA Readiness CheckerEnter your self-employment and property income to find your Making Tax Digital start date, what you must file each quarter, and whether an exemption applies.
Corporation tax & reliefs
Associated Companies CT CalculatorSee how associated companies divide the £50,000 and £250,000 corporation tax thresholds, what marginal relief you get, your effective CT rate, and whether quarterly instalments apply.R&D Tax Credit EstimatorIndicative R&D credit under the 2024 merged scheme. Drop in qualifying spend to see your estimate and whether the intensive SME rate applies.
Vehicles & expenses
Mileage Reimbursement CalculatorWork out your 2026/27 mileage claim at the new 55p AMAP rate, including Mileage Allowance Relief if your employer pays less and the taxable excess if they pay more.Van & Equipment Capital Allowance CalculatorSee the year-one and four-year tax saving on a van, car, or equipment purchase under the FA 2026 rules: AIA, the new 40% first-year allowance, and writing down allowances at 14% or 6%.
Exit, finance & valuation
BADR CGT CalculatorSee your post-relief CGT on a business sale, your remaining lifetime allowance, and how the 2026/27 BADR rate of 18% (up from 14% in 2025/26) affects your CGT bill.Residential CGT 60-Day Reporting CalculatorWork out the capital gains tax due on a UK residential property sale, your exact 60-day reporting deadline from completion, and whether you need to file a return at all.Business Loan CalculatorEstimate the monthly repayment, total interest, and total cost of a limited-company business loan, amortising or interest-only.Asset Finance CalculatorEstimate the monthly rental on hire purchase or a finance lease for company equipment, vehicles or machinery, including a balloon or residual payment.EOT Tax Saving CalculatorSee the CGT on a sale to an Employee Ownership Trust under the current 50% relief rule (from 26 November 2025), contrasted with the old 100% relief position and a straight trade sale using BADR.Business Valuation CalculatorGet an indicative enterprise and equity value range for your company from its adjusted EBITDA and a sector multiple, before surplus cash and debt.
Run a business site? Embed any of these calculators for free. See the embed gallery
Free consultation
A number is a starting point, not a decision
These tools model standard 2026/27 thresholds. What they cannot see is your prior-year usage, your other income, or how this year's decision changes next year's. A free call gets that read properly.
- 24-hour response, usually same dayYou hear back from a person, not an autoresponder
- Fixed fees, agreed before any workIn writing, before anything starts
- One named accountant, not a team inboxThe same person every time you call
No obligation and no hard sell. If your figures already look right, we will say so.