United Kingdom · 2026/27
UK payroll & tax calculators
Ten connected calculators for take-home pay, employer costs, statutory entitlements, self-employment and IR35. Choose the situation first; each calculator then shows the formula, the relevant tax year and the official sources behind its estimate.
Rates reference
UK payroll rates & thresholds 2026/27
PAYE, both sides of NI, student loans, minimum wage and statutory pay, plus a CSV.
Open the 2026/27 rates →Deadline calendar
Self Assessment deadlines 2026/27
Filing, payments on account and the first mandatory MTD quarterly updates, plus an importable calendar.
Open the deadline calendar →Pension decision guide
Pension salary sacrifice guide 2026/27
Payslip mechanics, worked examples, pension and minimum-wage limits, plus the announced 2029 NI change.
Read the salary sacrifice guide →Current baseline
What changed — and what did not — in 2026/27
For England, Wales and Northern Ireland, the standard Personal Allowance remains £12,570. The allowance tapers once adjusted net income exceeds £100,000. Scotland uses different earned-income bands, so location matters even when gross salary is unchanged.
For most employees in National Insurance category A, the main employee rate is 8% between the primary threshold and upper earnings limit, then 2%. The standard employer rate is 15% above the secondary threshold. Each calculator applies the rules relevant to its own scenario rather than treating every deduction as one flat percentage.
Before relying on an estimate
- Use the tax code and pay frequency shown on the actual payslip.
- Select Scotland when Scottish Income Tax applies.
- Enter pension contributions using the method your scheme actually uses.
- For legal status or payroll filing, confirm the result with HMRC or an adviser.
Decision guide
Choose by the decision you need to make
Payroll questions often overlap. Start with the calculator that owns the main decision, then use the linked companion tools to test a change in hours, pension, employment status or statutory leave.
Employees
Understand take-home pay and changes to salary
Start with gross pay, then narrow the estimate when your situation includes salary sacrifice, more than one job or part-time hours.
UK Salary Calculator
Estimate take-home pay after Income Tax, employee National Insurance, pension contributions and student-loan deductions.
Best for: A complete payslip-style estimate
Salary Sacrifice Calculator
Compare pay before and after a pension salary-sacrifice arrangement, including employee and employer National Insurance effects.
Best for: Pension contribution decisions
Pro Rata Salary Calculator
Convert a full-time salary into part-time annual, monthly, weekly, daily and hourly pay using contracted hours or days.
Best for: Part-time offers and reduced hours
Two Jobs Tax Calculator
Model two employments together so the shared Personal Allowance and separate National Insurance calculations are visible.
Best for: Second jobs and split income
Employers
Budget for payroll costs and statutory entitlements
These tools separate the employee-facing amount from the cost or entitlement an employer needs to plan for.
Employer National Insurance Calculator
Estimate secondary Class 1 National Insurance by pay period, category letter and Employment Allowance treatment.
Best for: True employment-cost budgeting
Maternity Pay Calculator
Build a week-by-week Statutory Maternity Pay schedule from average weekly earnings and the leave start date.
Best for: SMP schedules and payroll planning
Redundancy Calculator
Estimate statutory redundancy pay from age, complete years of service and weekly pay, with the relevant statutory limits.
Best for: Statutory redundancy estimates
Annual Leave Calculator UK
Estimate statutory holiday entitlement for full-time, part-time and part-year workers, with bank-holiday treatment shown.
Best for: Holiday entitlement and pro-rating
Self-employed & contractors
Compare business income with employment-style tax
Use profit rather than turnover for a sole-trader estimate, and treat IR35 output as a financial scenario rather than a status decision.
Self-Employed Tax Calculator
Estimate Income Tax and Class 4 National Insurance from annual profit, with payments on account shown separately.
Best for: Sole traders preparing for Self Assessment
Inside IR35 Calculator
Compare an inside-IR35 deemed-employment scenario with an outside-IR35 limited-company scenario using the same contract inputs.
Best for: Contract-rate and take-home comparisons
A reliable order of operations
From gross amount to a decision you can check
- 1
Define the right base
Use annual salary for employment, taxable profit for self-employment, or the contract value and working pattern for IR35.
- 2
Apply the correct jurisdiction
Income Tax differs in Scotland. National Insurance category letters and employment status can change the applicable calculation.
- 3
Add deductions one at a time
Pension method, student-loan plan and benefits can alter take-home pay. Keep each input visible so the result remains explainable.
- 4
Reconcile with the official record
Compare an estimate with the payslip, P60, contract or HMRC guidance. A calculator is a planning aid, not a payroll submission.
Primary sources
The official rules this collection follows
Rates are dated to the 2026/27 tax year. Each calculator links the narrower source used for its formula; these are the collection-level starting points.