Gross pay
Enter income the way payroll works
Add recurring or one-off income, choose the period, and keep taxable, NIable and pension assumptions close to the result they affect.
taxonpay.co.uk
TaxOnPay
Plan UK take-home pay, salary changes and tax scenarios before they hit your payslip.
TaxOnPay brings gross-to-net, net-to-gross, pensions, PAYE history, student loans, child benefit, tax optimisation and scenario comparison into one native iPhone app.
Built for UK payroll planning, pay-change decisions and local-first estimate workflows.
Current fiscal policy coverage: 2024/25, 2025/26 and 2026/27.
TaxOnPay provides estimates for planning and comparison. It is not tax, financial, legal, payroll, pension, employment or accounting advice.
Planning tools
Answer the pay questions that matter
Use the same calculation engine across quick estimates, target salary planning, optimisation and saved comparisons, so your scenarios stay consistent.
Pensions and deductions
Model pre-tax choices before changing them
Review pension, salary sacrifice, pre-tax and post-tax effects so you can understand how each choice changes take-home pay.
Scenarios
Compare saved setups side by side
Save different versions of your setup and compare take-home pay, gross pay, pre-tax allocations and deductions by week, month or year.
Pay change
Check a raise against inflation
Compare proposed pay changes with CPI or CPIH and estimate the personalised take-home impact using your selected profile settings.
Gross to net
Estimate target salary and take-home outcomes
Use gross-to-net and net-to-gross tools to compare offers, plan salary targets, and understand how much of a change reaches your payslip.
Payroll detail
Built around real UK pay inputs
TaxOnPay keeps the everyday details close to the calculation, from student loan plans to PAYE history and recurring or one-off income.
Included in core planning
- Income Tax, National Insurance, tax code and tax region
- Student and postgraduate loan repayments
- Pension contributions, salary sacrifice and employer matching
- Child Benefit and High Income Child Benefit Charge inputs
- Recurring income, one-off income and benefits in kind
- Pre-tax and post-tax deductions with weekly, 4-weekly, monthly or annual periods
Useful when pay gets messy
- PAYE tax month, previous YTD taxable pay and previous YTD tax paid
- Scenario snapshots for comparing changes before and after edits
- Multiple profiles with saved calculation settings
- Car scheme and benefit-in-kind modelling where supported by the selected fiscal year
- ONS inflation data for pay-change comparisons
- Local-first storage for profiles, scenarios, settings and calculation inputs
Pay Change focuses on selected recurring gross pay and personalised take-home estimates. Some variable items, bonuses and one-off arrangements are intentionally excluded from that tool and can still be modelled elsewhere in the app.
App Store release
A UK pay lab for iPhone
TaxOnPay is being prepared for App Store release. The support and privacy pages are available now so they can be reviewed before the App Store listing is live.
App Store listing in preparation
Support and legal
Support
Use this page for App Store support and release questions. Please avoid sending real payslips, National Insurance numbers, tax codes or salary details unless they are anonymised.
Contact
Email support requests to support@taxonpay.co.uk.
Include your iPhone model, iOS version, app version, and the steps needed to reproduce the issue.
Open support pagePrivacy
TaxOnPay is local-first and does not require an account. Review what is stored on device and how optional analytics works.
Read privacy policyLimitations
TaxOnPay provides estimate and planning tools. It is not payroll, accounting, tax, legal or financial advice.
Read terms and limitations