Common questions about UK tax, National Insurance, and net pay calculations
← Back to CalculatorYour take-home pay (net pay) is your gross salary minus deductions. The main deductions are:
Example: On a £30,000 salary, you'd pay approximately £3,486 in tax, £1,377 in National Insurance, leaving you with around £25,137 take-home (before pension contributions).
The UK income tax bands for England, Wales, and Northern Ireland for 2025-26 are:
| Band | Taxable Income | Tax Rate |
|---|---|---|
| Personal Allowance | Up to £12,570 | 0% |
| Basic Rate | £12,571 to £50,270 | 20% |
| Higher Rate | £50,271 to £125,140 | 40% |
| Additional Rate | Over £125,140 | 45% |
Note: Scotland has different tax bands and rates. Your Personal Allowance reduces by £1 for every £2 earned over £100,000, disappearing entirely at £125,140.
National Insurance (NI) is a tax on earnings that funds state benefits like the NHS, State Pension, and unemployment benefits. For 2025-26, employee NI rates are:
Unlike income tax, National Insurance is only paid on employment and self-employment income, not on investment income, pensions, or rental income. Employers also pay NI contributions (13.8% on earnings above £9,100), but this doesn't affect your take-home pay.
Employees have tax and National Insurance automatically deducted through PAYE (Pay As You Earn). Your employer handles all tax obligations.
Self-employed individuals (sole traders) must:
Limited company contractors pay themselves a salary (subject to PAYE) plus dividends, which have different tax rates (8.75% basic, 33.75% higher, 39.35% additional rate).
Your tax code tells your employer how much tax-free pay you're entitled to. The most common code for 2025-26 is 1257L:
Other common codes:
Check your tax code on your payslip or via your Personal Tax Account on GOV.UK. An incorrect code can mean you pay too much or too little tax.
Workplace pensions reduce your gross salary before tax is calculated, providing tax relief:
Example: On a £40,000 salary, if you contribute 5% (£2,000), you only lose £1,600 from your take-home as you save £400 in tax. Your employer typically adds 3% (£1,200), making your total pension contribution £3,200 while you only "paid" £1,600.
Minimum auto-enrolment rates are 8% total (5% employee, 3% employer), but you can contribute more. The annual allowance is £60,000 for most people.
The "40% tax trap" refers to the Higher Rate tax threshold at £50,270. Once your income exceeds this, you pay 40% on earnings above it (instead of 20%). This creates several considerations:
£100,000 cliff edge: Even worse, at £100,000+ you lose £1 of Personal Allowance for every £2 earned, creating an effective 60% tax rate between £100,000 and £125,140. Pension contributions are especially valuable here.
Gross salary is your total pay before any deductions. This is the figure in your employment contract.
Net salary (take-home pay) is what actually lands in your bank account after deductions:
Example: A £35,000 gross salary typically results in approximately £27,300 net (before pension contributions), meaning you take home about 78% of your gross salary. Higher earners take home a smaller percentage due to progressive tax rates.
Student loan repayments are automatically deducted through PAYE if you earn above the threshold. For 2025-26:
| Plan Type | Threshold | Repayment Rate |
|---|---|---|
| Plan 1 (pre-2012) | £24,990 | 9% above threshold |
| Plan 2 (2012-2023) | £27,295 | 9% above threshold |
| Plan 4 (Scotland) | £31,395 | 9% above threshold |
| Plan 5 (post-2023) | £25,000 | 9% above threshold |
| Postgraduate Loan | £21,000 | 6% above threshold |
Example: On a £35,000 salary with Plan 2, you'd repay 9% of (£35,000 - £27,295) = £693.45 per year (£57.79/month).
Yes! Common reasons for overpaying tax include:
To claim a refund:
HMRC typically processes refunds within 5-10 weeks. You can claim back tax for up to 4 years.
Your annual tax and National Insurance are the same regardless of pay frequency - HMRC simply divides your allowances differently:
Important: If you're paid weekly, you might hit tax thresholds differently throughout the year, but by the end of the tax year (April 5th), the total tax paid will be the same as if you were paid monthly. Your payslip shows tax to date, ensuring you never overpay annually.
Scotland has different income tax rates and bands (but the same National Insurance). For 2025-26, Scottish rates are:
| Band | Taxable Income | Tax Rate |
|---|---|---|
| Personal Allowance | Up to £12,570 | 0% |
| Starter Rate | £12,571 to £15,397 | 19% |
| Basic Rate | £15,398 to £27,498 | 20% |
| Intermediate Rate | £27,499 to £43,662 | 21% |
| Higher Rate | £43,663 to £75,000 | 42% |
| Advanced Rate | £75,001 to £125,140 | 45% |
| Top Rate | Over £125,140 | 48% |
Scottish taxpayers have an 'S' prefix on their tax code (e.g., S1257L). The result: lower earners pay slightly less, higher earners pay more compared to England/Wales/NI.
Get tax relief at your highest rate (20%, 40%, or 45%)
£20,000/year tax-free savings and investment growth
Uniforms, professional fees, mileage - use form P87
Transfer £1,260 allowance to spouse (save £252/year)
Exchange salary for benefits (pension, cycle scheme, childcare)
Wrong codes are common - check yours is 1257L (or S1257L in Scotland)
This FAQ provides general information about UK tax and National Insurance for the 2025-26 tax year. It is not financial or tax advice. Tax rules are complex and individual circumstances vary. For personalized advice, consult a qualified accountant or tax advisor. Always verify tax codes and calculations with HMRC. Tax rates and thresholds are subject to change.