How to Calculate Monthly Salary: Gross Pay, Take-Home Pay and Deductions

Why gross salary and monthly take-home pay differ

When a job advert says £35,000 a year, that is gross salary, the amount before deductions. The figure that arrives in your bank is take-home pay, or net pay. The gap is made up of Income Tax, employee National Insurance and, depending on your circumstances, pension contributions and student loan repayments. To calculate monthly salary properly, you need to work through those deductions in the right order rather than simply dividing the annual figure by twelve.

PAYE means your employer deducts tax and National Insurance as you earn. Income Tax and National Insurance are worked out separately on the same pay, using their own thresholds. They do not stack on top of one another, so the total deduction is the sum of the two. Pension and student loans may then come out as well.

How to calculate monthly salary step by step

1. Start with gross annual pay

Your gross pay is your contractual salary before any deductions. If you are paid hourly, multiply your hourly rate by your contracted weekly hours, then by 52, or by the number of paid weeks in your contract. For example, the National Living Wage rate for age 21 and over is £12.71 an hour under GOV.UK National Living Wage rates. At 37.5 hours a week, that is roughly £24,785 gross a year. A part-time contract changes the annual figure pro rata.

2. Account for pension and salary sacrifice

Pension contributions reduce taxable pay if they are made by salary sacrifice or through net pay arrangements. Salary sacrifice comes out before Income Tax and National Insurance, so each pound going into your pension costs less than a pound of take-home pay. If you contribute 5% of a £35,000 salary, that is £1,750 a year going into the pension, but the effect on your net pay is smaller than £1,750 because you also save the tax and NI on that amount. A take-home calculator can model this for your own percentage.

3. Work out Income Tax

For 2026/27, the standard Personal Allowance is £12,570 in England, Wales and Northern Ireland. Income above that is taxed at 20% in the basic rate band up to £50,270, 40% in the higher rate band to £125,140, and 45% above that, according to GOV.UK Income Tax rates and Personal Allowances.

The Personal Allowance is gradually withdrawn once income exceeds £100,000, which raises the effective marginal rate in that range. That is why a pay rise between £100,000 and around £125,140 can feel less rewarding than the headline percentage suggests.

Your tax code adjusts the allowance your employer applies. The standard code is 1257L, meaning £12,570 of tax-free pay spread across the year. A different code may mean HMRC is collecting tax on a benefit in kind, recovering underpaid tax from an earlier year, or giving you extra allowances.

4. Work out employee National Insurance

Employee National Insurance is charged at 8% on earnings between £12,570 and £50,270, then 2% above £50,270 under GOV.UK National Insurance rates and categories. There is no Personal Allowance in the same way as Income Tax; the 8% band begins above the primary threshold. NI is calculated on each pay period separately rather than on the annual total, which matters if your pay varies.

Unlike Income Tax, employee National Insurance applies across the UK. Scotland has its own Income Tax bands, but the NI rates and thresholds for employees are the same.

5. Add student loan repayments if you have one

Student loan repayments are based on your income above a plan threshold. GOV.UK Repaying your student loan guidance lists thresholds of £26,900 for Plan 1, £29,385 for Plan 2, £33,795 for Plan 4 in Scotland, and £25,000 for Plan 5. Repayments are 9% of income above the threshold for those plans, while the Postgraduate Loan threshold is £21,000 at 6%. If you have more than one loan type, the calculation can be more involved than a simple calculator assumes.

6. Divide the annual net figure by twelve

Once you have taken off Income Tax, National Insurance, pension and student loan, the remainder is your annual take-home pay. Divide by twelve for a monthly figure, or by 52 for a weekly figure. Employers usually round each payslip to the nearest penny, so the monthly totals may differ slightly from an annual estimate divided by twelve.

Worked example: £35,000 a year

Take a £35,000 salary in England on the standard 1257L tax code, with no pension and no student loan. The Personal Allowance covers the first £12,570, leaving £22,430 taxable at 20%. That is £4,486 in Income Tax. Employee National Insurance is 8% of the same £22,430, which comes to £1,794.40.

Annual take-home pay is therefore £28,719.60, or £2,393.30 a month. That is an effective deduction rate of about 17.9%, leaving roughly 82p of every pound earned. The marginal rate is higher: an extra pound at this salary is taxed at 20% Income Tax plus 8% NI, so 28p of each additional pound goes in deductions.

What different salaries look like

Using the same assumptions, 2026/27 rules, standard tax code, no pension or student loan, the pattern is broadly as follows. A £20,000 salary leaves about £17,920 a year, or £1,493 a month. At £30,000, take-home is around £25,120 a year, or £2,093 a month. A £50,000 salary produces roughly £39,520 a year, or £3,293 a month. At £75,000, take-home is around £54,057 a year, or £4,505 a month. At £100,000 it is about £68,557 a year, or £5,713 a month.

The ONS ASHE provides the official backdrop: median full-time gross annual pay for the UK is around £39,039, which sits above the £35,000 example but below the £50,000 threshold where the higher rate begins. For a single person with no pension or student loan, that median equates to roughly £2,636 a month take-home, though the exact figure depends on the tax code and pay period.

These figures are estimates. A salary data page can help you compare roles, and our salary articles cover sector-specific pay scales such as NHS nursing and teaching. Job seekers comparing offers should look at net pay rather than gross alone, because the same gross salary can produce different take-home totals depending on pension arrangements and student loan plan.

Scotland: different Income Tax bands

Scottish taxpayers pay Income Tax under a separate set of bands. For 2026/27 these are starter rate 19%, basic rate 20%, intermediate rate 21%, higher rate 42%, advanced rate 45% and top rate 48%, according to GOV.UK Scottish Income Tax. The Personal Allowance is the same, and employee National Insurance is unchanged across the UK.

The practical effect is that lower and middle earners in Scotland pay broadly similar amounts to those elsewhere, while higher earners may pay more. On £35,000, a Scottish taxpayer is estimated to pay around £15 a year more than someone in England on the same salary. On £50,000, the difference is larger, roughly £1,496 a year less take-home, because the 42% higher rate starts at a lower income than the UK-wide 40% higher rate.

That is why any calculator you use should be set to the correct region. To calculate monthly salary for a Scottish role, use Scottish bands; for England, Wales or Northern Ireland, use the UK-wide bands.

Why your payslip may differ

Most online estimates assume a standard tax code, category A National Insurance, a single job, no benefits in kind and pay spread evenly through the year. Real payslips can differ because of a non-standard tax code, a company car or private medical insurance, multiple jobs, a bonus paid in one month, or a mid-year pay rise. NI in particular is assessed per pay period, so a large bonus can push a single month into a higher NI rate even if your annual salary is unchanged.

Rounding is another factor. Payroll software works to fixed rules, but the monthly figure can vary by a few pounds from a simple annual calculation.

Checking your own numbers

To calculate monthly salary for your own situation, start with the gross annual figure on your contract, subtract any salary sacrifice, apply the Personal Allowance and tax bands, add the correct NI rate, then deduct pension and student loan. A take-home calculator does the arithmetic for you and lets you change region, tax code and pension percentage. It is worth checking your payslip against an estimate, and if the two differ significantly, ask your payroll team or check your tax code with HMRC.

Figures are public-statistics or calculator estimates for a single person with the standard Personal Allowance, no pension contributions and no student loan unless stated. Actual take-home pay varies by tax code, pension, Scottish rates, benefits in kind and other deductions. Always check your payslip and official GOV.UK guidance.