£40,000 vs £48,000 After Tax 2025-26
Side-by-side UK take-home pay comparison · Income Tax + National Insurance
You keep £5,760 more per year
Earning £48,000 instead of £40,000 gives you £480 more per month (£111/week). Of the £8,000 gross difference, you keep 72% after tax and NI.
£40,000 — Income Tax bands
| Band | Tax |
|---|---|
| Personal Allowance | — |
| Basic Rate (20%) | £5,486 |
| Total Income Tax | £5,486 |
£48,000 — Income Tax bands
| Band | Tax |
|---|---|
| Personal Allowance | — |
| Basic Rate (20%) | £7,086 |
| Total Income Tax | £7,086 |
Full breakdown — £40,000 vs £48,000
| £40,000 | £48,000 | Difference | |
|---|---|---|---|
| Gross salary | £40,000 | £48,000 | +£8,000 |
| Income Tax | £5,486 | £7,086 | +£1,600 |
| National Insurance | £2,194 | £2,834 | +£640 |
| Total deductions | £7,680 | £9,920 | +£2,240 |
| Net pay (annual) | £32,320 | £38,080 | +£5,760 |
| Net monthly | £2,693 | £3,173 | +£480 |
| Net weekly | £622 | £732 | +£111 |
| Net daily | £124 | £146 | +£22 |
| Effective tax rate | 19.2% | 20.67% | |
| Marginal tax rate | 28% | 28% |
£40,000 vs £48,000 after tax — what you actually keep
On a £40,000 salary, you take home £32,320 per year (£2,693/month). On £48,000, you take home £38,080 per year (£3,173/month). The £8,000 gross difference translates to £5,760 extra take-home — you keep 72% of the raise.
Income Tax on £40,000 is £5,486, rising to £7,086 on £48,000. National Insurance increases from £2,194 to £2,834. Together these deductions mean HMRC takes £2,240 of the £8,000 difference.
Why the effective rate changes
At £40,000 the effective tax rate is 19.2%, while at £48,000 it rises to 20.67%. This is because additional earnings are taxed at the marginal rate (28% on £48,000), which is higher than the blended average. The more you earn, the greater the proportion taken in tax and NI.
Frequently asked questions
How much more do I take home on £48,000 vs £40,000?
On £48,000 you take home £38,080/year (£3,173/month), compared to £32,320/year (£2,693/month) on £40,000. That is £5,760 more per year, or £480 more per month.
Why is the net difference (£5,760) less than the gross difference (£8,000)?
Of the £8,000 gross difference, you keep £5,760 (72%) after Income Tax and National Insurance. The rest goes to HMRC. Your marginal rate on £40,000 is 28% and on £48,000 it is 28%.
What is the effective tax rate on £40,000 vs £48,000?
The effective tax rate (Income Tax + NI as a percentage of gross) is 19.2% on £40,000 and 20.67% on £48,000. The higher salary has a higher effective rate because more income falls into higher tax bands.
How much tax and NI do I pay on £40,000 vs £48,000?
On £40,000: Income Tax £5,486 + NI £2,194 = £7,680 total deductions. On £48,000: Income Tax £7,086 + NI £2,834 = £9,920 total deductions.