United Kingdom
Salary, Tax & Pay Calculators for the UK
The sums behind a payslip: what a pro rata salary really is, what a day rate is worth once you strip the costs out, and how statutory entitlements are actually built.
39 calculators in this category
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Pro Rata Salary Calculator
Part-time salary from a full-time equivalent, by hours or days.
Day Rate Calculator
Convert a day rate to a salary, or find the rate that matches a package.
FTE Calculator
Full-time equivalent for one person or a whole team.
Overtime Calculator
Overtime pay at time and a half, double time or plain time.
VAT Calculator
Add or remove UK VAT at 20%, 5% or any rate.
ISA Calculator
Projected ISA value, with the cost of charges made visible.
Salary Calculator UK
Take-home pay after tax, NI, pension and student loan.
Holiday Entitlement Calculator UK
Statutory 5.6 weeks, pro-rated for any working pattern.
Redundancy Pay Calculator UK
Statutory redundancy pay by age band and service.
Maternity Pay Calculator UK
SMP across 39 weeks, plus occupational top-up.
Statutory Sick Pay Calculator UK
SSP over qualifying days, with waiting days applied.
Capital Gains Tax Calculator UK
CGT on a disposal, with the rate set by your income.
Dividend Tax Calculator UK
Dividend tax as the top slice of income, band by band.
Student Loan Repayment Calculator UK
Repayments by plan, and whether the balance is ever cleared.
Compound Interest Calculator UK
Growth on a lump sum plus regular contributions, net of charges.
Self Employed Tax Calculator UK
Income tax and Class 4 NI on profit, with payments on account.
Inheritance Tax Calculator UK
Nil rate bands, the residence band and its taper.
Savings Interest Calculator
What regular saving grows to, with tax on interest handled.
Loan Repayment Calculator
Monthly repayment and total interest on a personal loan.
National Minimum Wage Calculator UK
The right rate for your age, and any underpayment.
Employer NI Calculator
Class 1 secondary NI, with the Employment Allowance applied.
CIS Tax Calculator
Deduction on the labour element, with materials excluded.
IR35 Take-Home Calculator
Inside via umbrella against outside via a limited company.
Salary Sacrifice Pension Calculator
Sacrifice against ordinary relief, with the NI saving shown.
Benefit in Kind Tax Calculator
Company car, fuel and other taxable benefits.
Scottish Income Tax Calculator
Six bands, and the gap against the rest of the UK.
Second Job Tax Calculator
What each job deducts against what is actually due.
Attachment of Earnings Calculator
Court orders and Direct Earnings Attachments, both handled.
Sole Trader vs Limited Company Calculator
Both routes compared honestly, running costs netted off.
True Cost of Employee Calculator
Salary plus everything else, per hour actually worked.
Teacher Take-Home Pay Calculator
Pay scale, pension tier and take-home, part-time handled.
Probate Fees Calculator
The flat court fee, and what a solicitor would add.
IHT Interest Calculator
Late payment interest from the sixth month after death.
Business Rates Calculator
Rateable value to bill, with small business relief applied.
Deferred State Pension Calculator
The uplift, and how long it takes to get your money back.
UFPLS Calculator
25% tax free, 75% taxed — and the emergency code shock.
Scrap Gold Calculator
Melt value by weight and carat, at today's price.
Silver Price Calculator
Melt value by weight and fineness, at today's price.
Back Pay Calculator
Wage arrears from an underpaid rate or a late pay rise.
Where these are worth more than the official tool
HMRC and GOV.UK publish calculators for the standard case, and for the standard case they are the right thing to use. The awkward version is where they stop: a mid-year start, a second job, a four-day week, a Scottish taxpayer, a salary sacrifice that changes the base everything else is calculated from.
These pages take the same published rules and apply them to the awkward version, then show which assumption was made at each step so you can change it.