How Much Tax Do You Pay on a UK Salary in 2026/27?
Reviewed against the official guidance linked in this article. Rates and eligibility can change. Check the linked official sources for your circumstances. See our editorial policy.
See how Income Tax and National Insurance are calculated on £40,000, and distinguish tax from pensions and other deductions.
On £40,000, estimated Income Tax and employee National Insurance total £7,680.40 in 2026/27, leaving £32,319.60 before pension contributions or student loans. That is an annual average of £2,693.30 a month.
This example assumes England, Wales or Northern Ireland, the standard Personal Allowance, a typical employee below State Pension age and no other income, benefits or adjustments. Scotland has different employment Income Tax bands.
Income Tax: apply each rate to its own slice
For someone with the full standard allowance, the first £12,570 is tax-free. The next £37,700 of taxable income is charged at 20%, then the higher-rate band at 40%. The additional rate is 45% above the applicable threshold.
The Personal Allowance falls by £1 for every £2 of adjusted net income above £100,000 and disappears at £125,140. That means the gross salary ranges change where the allowance is reduced. Savings and dividends use separate rules.
At £40,000, the calculation is straightforward:
| Slice of income | Rate | Income Tax |
|---|---|---|
| First £12,570 | 0% | £0 |
| Remaining £27,430 | 20% | £5,486 |
| Total | £5,486 |
See Income Tax rates and Scottish Income Tax.
National Insurance is separate
Using annual-equivalent thresholds, a typical employee pays 8% between £12,570 and £50,270 and 2% above that. At £40,000, £27,430 × 8% gives £2,194.40.
Payroll normally uses pay-period thresholds, so this annual illustration can differ slightly from the sum of your payslips. See National Insurance rates.
The £40,000 breakdown
| Item | Annual estimate | Monthly average |
|---|---|---|
| Gross salary | £40,000 | £3,333.33 |
| Income Tax | £5,486 | £457.17 |
| Employee NI | £2,194.40 | £182.87 |
| Take-home pay | £32,319.60 | £2,693.30 |
Monthly rows are rounded independently. Tax and NI together are about 19.2% of gross pay. The marginal Income Tax rate is 20%, but the average is lower because of the allowance.
Pensions and loans are other deductions
A pension contribution goes into retirement savings rather than being a tax. Its tax relief depends on the contribution method. Under a typical minimum auto-enrolment arrangement, total contributions are 8% of qualifying earnings, including at least 3% from the employer; the remaining 5% can include tax relief. It is not a general 3% employee contribution rule. Check the official contribution explanation.
Student loans are repayments, rather than Income Tax. Undergraduate plans normally deduct 9% above their threshold; postgraduate loans use 6% above a separate threshold. See our current student loan guide.
Employer costs are not another payslip deduction
At the standard 15% employer NI rate, £40,000 less the £5,000 annual-equivalent threshold produces £5,250 before any employer reliefs. That is on top of salary. It does not reduce the £40,000 again. Check HMRC's employer rates.
Use our salary calculator for an estimate with the settings that apply to you, then ask payroll about any unexplained payslip difference.