Question 1

How is PAYE calculated on my salary?

Accepted Answer

PAYE (Pay As You Earn) calculates tax and National Insurance automatically each pay period. Income tax is charged at 0% on earnings up to £12,570, 20% on earnings between £12,571-£50,270, 40% between £50,271-£125,140, and 45% above £125,140 (for 2024/25). National Insurance is 8% on earnings between £12,570-£50,270, and 2% above that. Your employer deducts these before paying you, spreading your tax bill across the year.

Question 2

What's the difference between gross and net salary?

Accepted Answer

Gross salary is your pay before any deductions. Net salary (take-home pay) is what you actually receive after Income Tax, National Insurance, pension contributions, and student loan repayments are deducted. For example, on a £40,000 gross salary, you'd pay around £5,486 in tax and £2,194 in NI, leaving you with approximately £32,320 net (£2,693 per month), before any pension or student loan deductions.

Question 3

How does student loan repayment affect my take-home pay?

Accepted Answer

Student loan repayments are deducted through PAYE alongside tax and NI. Plan 2 loans (most English students from 2012-2023) take 9% of earnings above £27,295. Plan 1 takes 9% above £24,990. Plan 4 (Scotland) takes 9% above £31,395. Postgraduate loans take 6% above £21,000, and can stack with undergraduate repayments. For example, on a £35,000 salary with Plan 2, you'd repay about £58 per month (9% of £7,705).

Question 4

What's the 40% tax bracket threshold for 2024/25?

Accepted Answer

You enter the 40% higher rate tax bracket when your taxable income exceeds £50,270 in 2024/25. This means gross earnings of £50,270 plus your £12,570 personal allowance = £62,840 total income. In Scotland, the thresholds differ: 21% starter rate from £14,877-£26,561, 42% intermediate rate from £43,663-£75,000. Note that pension contributions and salary sacrifice reduce your taxable income, potentially keeping you in the lower bracket.

Question 5

Do I pay National Insurance on pension contributions?

Accepted Answer

No, you don't pay National Insurance on pension contributions made through salary sacrifice. This makes salary sacrifice extremely tax-efficient: you save both Income Tax and NI (up to 13.8% total for basic rate taxpayers). However, regular pension contributions (not salary sacrifice) only get Income Tax relief, not NI relief. This is why salary sacrifice schemes can increase your take-home pay more than standard pension contributions, even though both reduce Income Tax.

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UK Take-Home Pay CalculatorSee What You'll Actually Earn

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What You'll Actually Take Home

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UK Tax Rates for 2024/25

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