UK calculator
Estimate UK take-home pay.
Understand what your salary is really worth
Tax Assumptions
The tax years, thresholds and simplifications used in the calculators.
What this page covers
UK V1 uses 2026/27 England, Wales and Northern Ireland Income Tax and Class 1 employee National Insurance assumptions. US V1 uses 2025 federal single-filer brackets, the 2025 standard deduction, employee FICA rates and selected simplified state models.
| Principle | How SalaryDecoded handles it |
|---|---|
| Transparency | Assumptions are published and linked from calculation pages. |
| Limits | Results are estimates, not payslip or tax-return outputs. |
| Updates | Tax inputs should be reviewed when official thresholds change. |
Useful routes
FAQ
Is SalaryDecoded regulated financial advice?
No. It is an educational calculation product and does not provide personal tax, legal or financial advice.
Can actual payslips differ?
Yes. Payroll frequency, benefits, tax codes, filing status, local taxes and deductions can change real outcomes.