All calculators

107 free UK tax calculators across 7 categories. Every one shows the tax year it used and the rules it applied.

Showing 49–72 of 107

Mansion Tax Calculator (High-Value Surcharge)From April 2028 , homes worth £2 million or more face an annual high-value council tax surcharge - the so-called mansion tax - of between £2,500 and £7,500 depending on value. Check your band and the yearly cost.
Markup CalculatorThis markup calculator turns a cost price and a markup percentage into a selling price, the cash profit you keep and the profit margin behind it. Type in what an item costs you and the markup you want to add, and it does the arithmetic so you can price with confidence. It is built for UK sole traders, shop owners, makers, tradespeople and anyone quoting jobs who needs a quick, reliable price without second-guessing the maths or confusing markup with margin.
Marriage Allowance CalculatorThis marriage allowance calculator checks whether you and your husband, wife or civil partner can transfer part of one person's tax-free allowance to the other in the 2026/27 tax year, and shows the cash saving. It's built for couples where one of you earns under the Personal Allowance and the other is a basic-rate taxpayer. Marriage Allowance is one of the most overlooked tax breaks in the UK. If you qualify, the maths is simple and the claim is free - yet hundreds of thousands of eligible couples never make it.
Maternity Pay CalculatorThis maternity pay calculator helps you estimate your Statutory Maternity Pay (SMP) across the full 39 weeks of leave, so you can plan the months ahead with real numbers rather than guesswork. Tell it your average weekly earnings and it works out the higher first-six-weeks rate and the flat-rate phase that follows. It is built for employees in England, Wales, Scotland and Northern Ireland for the 2026/27 tax year. If money is the thing keeping you up at night before a new arrival, this gives you a clear picture of what should land in your account each month.
Mileage Allowance CalculatorThis mileage calculator works out your tax-free mileage allowance using HMRC's Approved Mileage Allowance Payments (AMAP) rates for the 2026/27 tax year. Enter your business miles and the vehicle you use, and it shows what you can be paid tax-free, and how much relief you can claim if your employer pays you less than the approved rate. It's built for employees who use their own car, van, motorbike or bike for work, and for sole traders using simplified mileage. It does not cover your ordinary commute, which never qualifies.
Mortgage Affordability CalculatorThis mortgage affordability calculator gives you a realistic estimate of how much you could borrow based on your household income, your deposit and your regular monthly outgoings. It mirrors the way UK lenders actually weigh up an application, so you can see your likely ceiling before you ever speak to a broker or fill in a form. It is built for first-time buyers, home movers and anyone remortgaging onto a bigger property who wants a quick, honest answer to a simple question: how much mortgage can I get?
Mortgage CalculatorThis mortgage calculator works out your monthly repayments and the total cost of your home loan from four figures: the property price, your deposit, the interest rate and the term. It is built for UK buyers and homeowners - first-time buyers comparing deals, movers checking a new mortgage, and anyone remortgaging onto a fresh rate. Enter your numbers and you will see the monthly payment, the total interest you will pay over the life of the loan, and how the balance falls year by year. No sign-up, no personal details - just the maths.
Mortgage Overpayment CalculatorThis mortgage overpayment calculator shows how much interest you could save, and how many years you could knock off your term, by paying extra towards your home loan. Whether you can spare £50 a month or drop a £5,000 windfall onto the balance, you will see the effect in pounds and in time saved. It is built for UK homeowners weighing up whether to overpay the mortgage, top up savings, or clear other debt first. Enter your balance, rate, remaining term and the overpayment you have in mind, then read on for the maths behind the numbers and the traps to avoid.
National Insurance CalculatorThis national insurance calculator shows how much Class 1 National Insurance you pay as an employee in the 2026/27 tax year, broken down by year, month or week. Enter your salary and you'll see the slice that goes to NI before your pay lands in your account. It's built for employees on PAYE who want a quick, honest figure rather than a vague estimate. NI is charged UK-wide at the same rates, so whether you're in Cardiff, Belfast, Glasgow or Manchester, the numbers here apply to you.
Notice Period CalculatorUse our free Notice Period Calculator to get an instant estimate.
Overtime CalculatorUse our free Overtime Calculator to get an instant estimate.
P11D GeneratorOur free P11D generator creates a clear PDF listing an employee's taxable benefits in kind and the total cash equivalent, plus the employer Class 1A NIC. Enter company car, fuel, medical insurance, loans and other expenses and benefits to build the figures you need for reporting. Everything runs in your browser with no signup, so you can quickly produce a P11D for each employee and keep an accurate record of the benefits provided during the tax year.
P45 GeneratorOur free P45 generator lets you create a P45 PDF recording an employee's pay and tax when they leave. No signup, unlimited. A P45 summarises an employee's pay to date, tax to date, tax code and leaving details for the part of the tax year they worked. Enter the figures once and produce a clean, printable PDF you can keep for your records or hand to a departing employee.
Pay Rise CalculatorThis pay rise calculator shows how much of your raise you actually keep once Income Tax and National Insurance take their share in the 2026/27 tax year. Enter your current salary and your new salary to see the real increase in your monthly take-home pay, not just the headline figure your employer quotes. Because a raise can push part of your income into a higher tax band, it also shows what happens if your rise tips you over £50,270 or the £100,000 personal allowance taper, so you can see how much of each extra pound you keep.
Payments on Account CalculatorOur payments on account calculator helps you work out whether you owe Self Assessment payments on account, how much each one is and when they're due. Payments on account are advance contributions towards your next Self Assessment tax bill, spreading the cost so you don't face one large lump sum. Enter your figures to check whether HMRC expects these advance payments from you, plan ahead for each instalment and avoid surprise demands or interest charges when your return is filed.
Payroll CalculatorUse our free Payroll Calculator to get an instant estimate for the 2026/27 tax year.
Payslip GeneratorOur free payslip generator lets you create an unlimited UK payslip PDF with no signup. Enter salary, tax code, pension and student loan to see a full payslip with income tax and National Insurance. Each payslip itemises your gross pay, deductions and net take-home pay so you can keep clear records, check your figures or share a professional document in seconds.
Pension Annual Allowance CalculatorUse our free Pension Annual Allowance Calculator to get an instant estimate for the 2026/27 tax year.
Pension CalculatorThis pension calculator projects how big your pension pot could grow by the time you retire, based on what you pay in now, what your employer adds, the tax relief on top, and the investment growth you assume along the way. It is built for UK savers paying into a workplace scheme or a personal pension who want a realistic picture rather than a vague hope. Punch in your current pot, monthly contributions and target retirement age, and you will see a projected figure plus the gap between where you are heading and where you want to be.
Pension Drawdown CalculatorUse our free Pension Drawdown Calculator to get an instant estimate for the 2026/27 tax year.
Pension Inheritance Tax Calculator (2027)From 6 April 2027 , most unused pension funds are counted as part of your estate for Inheritance Tax. See how much extra IHT your beneficiaries could face once your pension is included - and what it was before.
Pension Lump Sum Tax CalculatorUse our free Pension Lump Sum Tax Calculator to get an instant estimate for the 2026/27 tax year.
Pension Tax Relief CalculatorUse our free Pension Tax Relief Calculator to get an instant estimate for the 2026/27 tax year.
Personal Savings Allowance CalculatorOur personal savings allowance calculator shows how much of your savings interest is tax-free and estimates any tax due on the rest. It works out your Personal Savings Allowance (£1,000/£500/£0) alongside the £5,000 starting rate for savings, so you can see exactly where you stand for the year. Your allowance depends on which income tax band you fall into, and lower earners may pay no tax on savings at all. Enter your income and interest below to check your position in seconds.

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