PayslipIQ UK Payroll Tools

20 free UK payroll tools for 2026/27 - refund detection, payslip diagnostics, take-home calculators and pro-tier B2B auditors. Every figure checked against current HMRC rules.

Refund + Rebate Tools Diagnostic + Audit Tools Planning + Forecast Calculators B2B + Pro Tools

Refund + Rebate Tools

Tools for users who suspect HMRC owes them money. Highest commercial-intent - most users land here from "tax refund" searches.

Tax Refund Detector

8 reasons you may have overpaid PAYE - auto-checked.

For: I think I am owed a refund

Mileage Tax Rebate Calculator

AMAP-rate calculator for self-funded business mileage.

For: I drive my own car for work

Redundancy Tax Calculator

£30,000 threshold + PILON + Class 1A NIC modelling.

For: I am being made redundant

Marriage Allowance Checker

3-question eligibility check, live verdict, £252/year.

For: I am married and one of us earns less than £12,570

Wage Recovery Tool

Identify owed wages, missed bonuses and underpayments.

For: My employer owes me unpaid wages

Diagnostic + Audit Tools

Spot what is wrong on your payslip. For users who arrived here with a specific suspicion ("my tax looks high", "the figures don't match") and need a second opinion before they raise it with payroll.

Payslip Auditor

12-month PAYE compliance audit for HR + finance.

For: I need to audit a year of payslips

Payroll Health Score

A-F grade across 8 payroll quality dimensions.

For: How healthy is my payroll setup

Why Is My Pay Lower This Month?

Diagnose unexpected pay drops - tax, NI, bonus, sacrifice.

For: My pay is lower than usual

Payslip Comparison

Side-by-side comparison of two payslips.

For: My pay changed - what changed

Tax Code Decoder Pro

Decode any UK tax code with full breakdown.

For: What does this tax code mean

Bulk Payslip Verifier

Verify multiple payslips in one batch (HR + payroll).

For: I need to check a whole team of payslips

Planning + Forecast Calculators

Forward-looking calculators for users planning income changes, pension contributions, mortgage applications, salary negotiations.

Take-Home Pay Sandbox

Model salary changes against 2026/27 PAYE rules.

For: What would my take-home be at £X

Salary Forecast

12-month projection of take-home, tax and pension.

For: What will I take home over the next year

Bonus Tax Calculator

Cash vs salary-sacrifice bonus modelling, £100k taper.

For: How much tax will my bonus cost

Pension Optimiser

Model contribution changes against tax + NI savings.

For: How much should I put into pension

Mortgage Readiness Check

Lender-ready income summary from your payslips.

For: I am applying for a mortgage

Self Assessment Helper

Map payslip + side-income for your SA return.

For: I have to file Self Assessment

Salary Negotiation Calculator

Translate offer-vs-counter into real take-home difference.

For: I am negotiating a salary offer

Payslip Comparison (Lite)

Quick two-payslip side-by-side for casual users.

For: Quick comparison of two payslips

B2B + Pro Tools

Tools targeted at HR teams, payroll bureaus, accountants and developers integrating PayslipIQ into their own workflows.

Payslip API

Programmatic UK payslip parsing + PAYE validation.

For: I want to integrate this into my product

Not sure which tool you need?

Start with the free Payslip Checker. Upload one payslip, get a full breakdown, and we will point you at the right tool for any issues we spot.

Run free payslip check →