Knowing your gross salary and knowing what actually arrives in your bank account each month are two different things. The gap between them is filled by income tax, National Insurance, student loan repayments, and pension contributions, each calculated slightly differently and each affected by where the salary sits relative to a set of thresholds and bands.

This tool calculates your take-home pay from a gross salary, hourly rate, or monthly figure, showing exactly how much goes to each deduction and what you keep. It covers England, Wales, Northern Ireland, and Scotland (which has its own income tax rates), and includes a marginal rate insight showing what the next £1,000 of income would actually cost you. All figures are illustrative and based on 2025/26 rates.

About this tool

How to use the take-home pay calculator

The tool produces the most accurate result when the inputs reflect your actual situation. Using the gross salary from your contract or offer letter, the correct student loan plan, and the actual pension contribution percentage from your payslip produces a figure close to your real take-home pay. For a precise figure, always refer to your payslip, since this tool does not model benefits in kind, tax code adjustments, or salary sacrifice for benefits other than pension.

How income tax bands work

UK income tax uses a marginal rate system, which means different portions of income are taxed at different rates rather than the entire income being taxed at a single rate. The first £12,570 of income (the Personal Allowance for 2025/26) is not taxed at all. Income above that is taxed in bands: in England, Wales, and Northern Ireland, the first £37,700 above the Personal Allowance is taxed at 20% (basic rate), the next £74,870 at 40% (higher rate), and anything above £125,140 at 45% (additional rate). Scotland has six separate bands ranging from 19% to 48%, which produce a different tax outcome at most income levels.

The marginal structure means that crossing into a higher tax band does not increase the tax on all of your income, only on the portion above the threshold. Moving from £50,000 to £55,000 means the additional £5,000 is taxed at 40% (for England), but the first £50,000 is still taxed at the same rates as before. This is a common misunderstanding: no one pays 40% tax on their entire salary by earning above the higher rate threshold. The tool shows the exact amount of income in each band and the tax due at each rate, which makes this band structure visible rather than abstract.

The Personal Allowance taper above £100,000

For adjusted net income above £100,000, the Personal Allowance is reduced by £1 for every £2 of income above that level. At £125,140, the Personal Allowance is fully withdrawn and every pound of income is taxable. This creates an effective marginal income tax rate of 60% in the taper zone for English taxpayers: each additional £2 of income reduces the Personal Allowance by £1, which means £3 of income becomes newly taxable at the 40% higher rate, producing £1.20 of tax on £2 of additional income, which is an effective rate of 60%.

In Scotland, the equivalent effect produces an effective marginal rate of around 63% in the taper zone because the applicable rate at that income level is 42% rather than 40%. The taper zone is one of the most significant features of the UK tax system for earners in this range, and the marginal rate panel in the tool flags it with a specific warning when income falls between £100,000 and £125,140. For earners in this zone, increasing pension contributions through salary sacrifice can be particularly effective because the pension contribution reduces adjusted net income, which preserves more of the Personal Allowance and produces a disproportionately large tax saving compared with the same contribution at other income levels.

National Insurance for employees

Employee National Insurance (Class 1) is a separate deduction from income tax, calculated on different thresholds. For 2025/26, the Primary Threshold is aligned with the Personal Allowance at £12,570 per year, meaning no NI is due on income below that level. Between the Primary Threshold and the Upper Earnings Limit (£50,270), NI is charged at 8%. Above the Upper Earnings Limit, the rate drops to 2%. Unlike income tax, NI does not have multiple bands at different rates across the same income range in the way that Scottish income tax does: it is a simpler two-rate structure.

National Insurance is relevant to the pension type choice because salary sacrifice reduces the income on which NI is calculated, while a standard before-tax pension arrangement does not. For someone earning £40,000 with a 5% pension contribution (£2,000), salary sacrifice saves £160 per year in NI (£2,000 multiplied by the 8% main NI rate) compared with the standard arrangement. The employer also saves NI on the sacrificed amount, which is why many employers offer salary sacrifice and some pass part of their saving back to the employee as an additional pension contribution. The NI saving is modest at lower incomes but becomes meaningful for higher earners with larger pension contributions.

Student loan deductions explained

Student loan repayments are collected through the payroll system as a percentage of income above a threshold, functioning as an additional deduction alongside tax and NI. The threshold and rate depend on the plan type. Plan 2 (the most common for recent English and Welsh graduates) charges 9% on income above £27,295. Plan 1 charges 9% above £24,990. Plan 4 (Scotland) charges 9% above £31,395. Plan 5 (from 2023) charges 9% above £25,000. Postgraduate loans charge 6% above £21,000 and can run alongside an undergraduate repayment, meaning both deductions apply simultaneously.

The practical effect of a student loan on take-home pay depends on how far above the threshold the income sits. At £30,000 on Plan 2, the repayment is 9% of the £2,705 above the £27,295 threshold, which is approximately £243 per year or £20 per month. At £45,000, the repayment rises to approximately £1,593 per year or £133 per month. The tool adds the student loan deduction to the stacked bar and breakdown, and includes it in the marginal rate calculation, so the full combined marginal rate at any income level reflects tax, NI, student loan, and pension together. For someone on Plan 2 earning between £27,295 and £50,270, the combined marginal rate is 20% income tax plus 8% NI plus 9% student loan, totalling 37% before any pension deduction.

Pension contributions and salary sacrifice

Pension contributions reduce take-home pay but they also reduce the income tax due, which means the net cost to the employee is lower than the gross contribution amount. For a basic rate taxpayer contributing £200 per month to a pension through a standard before-tax arrangement, the income tax saving is £40 (20% of £200), so the net cost to take-home pay is £160 rather than £200. For a higher rate taxpayer, the saving is £80 (40% of £200), so the net cost is £120. This tax efficiency is one of the primary reasons pension contributions are a central element of long-term financial planning.

Salary sacrifice extends this efficiency to National Insurance as well. Under salary sacrifice, the employee agrees to a lower contractual salary with the difference paid directly into the pension by the employer. Because the sacrificed amount never forms part of the employee’s earnings, neither income tax nor National Insurance is due on it. The NI saving is 8% of the sacrificed amount for income between £12,570 and £50,270, or 2% for income above that. The tool’s salary sacrifice comparison panel shows the monthly difference between the two methods, which is the NI saving expressed in take-home pay terms. Whether salary sacrifice is available depends on the employer: not all pension schemes offer it, and some employment contracts or benefits may be affected by the reduced contractual salary, including statutory maternity pay and mortgage affordability assessments that reference basic salary.

The marginal rate and why it matters

The marginal rate is the combined percentage of the next pound of income that goes to deductions rather than take-home pay. It is different from the effective rate, which is the average across all income. The effective rate on a £40,000 salary might be 24%, meaning roughly a quarter of gross pay goes to deductions. The marginal rate on the next £1,000 of income at that level is likely around 29% (20% income tax plus 9% student loan on Plan 2, with NI at 8% but partially offset by the pension, depending on the setup). The marginal rate is the figure that matters for any decision about earning more or contributing more to a pension.

The tool calculates the marginal rate by running the full calculation at the current salary and at salary plus £1,000, and showing the difference. This approach captures every interaction: the tax band the additional income falls into, whether NI is at the main or upper rate, whether student loan applies, the pension deduction, and the Personal Allowance taper if relevant. The result is the actual amount kept from the next £1,000, which is more useful than knowing the theoretical rate at a given band, because the combined effect of multiple deductions interacting at the same income level is not always obvious from the individual rates alone. The retirement savings calculator is a useful companion for understanding how the tax-efficient treatment of pension contributions interacts with the marginal rate to determine the real cost of saving for retirement.

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Frequently asked questions

Why does my take-home pay not match my payslip exactly?

The tool uses the standard 2025/26 tax bands, NI rates, and student loan thresholds applied to the gross salary entered, and divides the annual result by twelve to produce a monthly figure. A real payslip may differ for several reasons. Your tax code may not be the standard 1257L: if you have benefits in kind, underpaid tax from a previous year, or a marriage allowance transfer, your code will adjust the tax calculation. Payroll rounding, the specific pay period dates, and how your employer processes weekly versus monthly calculations can also produce small differences.

Other deductions that appear on a payslip but are not modelled in this tool include salary sacrifice for benefits other than pension (such as cycle to work, childcare vouchers, or private medical insurance), workplace parking levies, union subscriptions, and any court orders or attachment of earnings. Employer pension contributions are not deducted from your pay and do not appear in this tool, since they are paid by the employer on top of your salary. For a precise figure, the payslip is always the authoritative source. This tool is most useful for understanding the structure and relative size of each deduction rather than replicating the payslip figure exactly.

How do Scottish income tax rates differ from the rest of the UK?

Scotland sets its own income tax rates and bands through the Scottish Parliament, while England, Wales, and Northern Ireland share a single set of rates set by the UK Government. For 2025/26, Scotland has six tax bands compared with three in the rest of the UK: a starter rate of 19%, a basic rate of 20%, an intermediate rate of 21%, a higher rate of 42%, an advanced rate of 45%, and a top rate of 48%. The additional bands and higher upper rates mean that Scottish taxpayers on the same gross salary typically pay more income tax than their counterparts in England, Wales, or Northern Ireland at most income levels above the basic rate band.

National Insurance is not devolved and is the same across the UK, so the NI calculation does not change when Scotland is selected. The Personal Allowance is also set by the UK Government and applies equally in Scotland. Student loan thresholds are UK-wide with the exception of Plan 4, which is specific to Scottish graduates. The tool applies the full Scottish rate structure automatically when Scotland is selected, including the correct band widths and rates, and the tax band grid updates to show all six bands. Whether someone is a Scottish taxpayer depends on where they live, not where they work: HMRC determines this based on the individual’s main place of residence.

What is the difference between salary sacrifice and a standard pension arrangement?

Both methods reduce income tax on pension contributions. The difference is in National Insurance treatment. Under a standard before-tax arrangement (also called net pay arrangement), the pension contribution is deducted from gross pay before income tax is calculated, but National Insurance is still calculated on the full salary. Under salary sacrifice, the employee’s contractual salary is reduced by the pension amount, and both income tax and National Insurance are calculated on the lower figure. The result is a higher take-home pay under salary sacrifice for the same gross pension contribution, because the NI saving goes to the employee.

The NI saving from salary sacrifice is 8% of the sacrificed amount for income between the Primary Threshold and the Upper Earnings Limit, and 2% for income above the Upper Earnings Limit. For a £2,000 annual pension contribution on a salary of £35,000, the NI saving is approximately £160 per year (£2,000 multiplied by 8%), which is around £13 per month. The employer also saves NI on the sacrificed amount (currently 13.8%), and some employers pass part of this saving into the employee’s pension as an additional contribution. The comparison panel in the tool shows both methods side by side so the NI difference is visible before any decision about pension arrangement is made.

What happens to my tax rate above £100,000?

Above £100,000 of adjusted net income, the Personal Allowance begins to taper. It is reduced by £1 for every £2 of income above £100,000, and is fully withdrawn at £125,140. This creates an effective marginal income tax rate of 60% in England, Wales, and Northern Ireland (or approximately 63% in Scotland) across the taper zone, because each £2 of additional income makes £3 of income newly taxable: the £2 earned plus £1 of previously allowance-covered income. This is the highest effective marginal income tax rate in the UK income tax system, higher than the 45% additional rate that applies above £125,140.

The marginal rate panel in the tool captures this effect automatically because it calculates the actual difference in take-home pay between the current salary and salary plus £1,000, which includes the Personal Allowance taper where relevant. A warning note appears when income falls in the taper zone. For earners in this range, increasing pension contributions through salary sacrifice can be an effective way to reduce adjusted net income below £100,000 and restore some or all of the Personal Allowance, producing a disproportionately large tax saving. Whether this is appropriate depends on individual circumstances, and the interaction between pension contributions, the Personal Allowance taper, and any benefits linked to adjusted net income is an area where regulated financial advice can be particularly valuable.

Can I have more than one student loan deduction at the same time?

Yes. A Postgraduate Loan repayment can run alongside a Plan 1, Plan 2, Plan 4, or Plan 5 repayment, meaning both are deducted through payroll simultaneously. The undergraduate repayment is 9% of income above the relevant plan threshold, and the postgraduate repayment is 6% above the £21,000 threshold. Both apply independently, so the combined repayment can be up to 15% of income above the higher of the two thresholds. This is a significant addition to the marginal rate: for someone on Plan 2 and a Postgraduate Loan earning above both thresholds, the combined marginal deduction from student loans alone is 15%, on top of income tax and National Insurance.

The tool currently models a single student loan plan selection. If you have both an undergraduate and postgraduate loan, selecting the undergraduate plan shows the 9% deduction from that plan. To estimate the full combined deduction, add the postgraduate repayment separately: 6% of income above £21,000 per year. For a salary of £35,000, that is 6% of £14,000, which is £840 per year or £70 per month. Adding this to the undergraduate repayment gives the total student loan impact. The combined deductions at typical graduate salaries can represent a meaningful reduction in take-home pay, which is useful context for the monthly budget planner and any affordability assessment for borrowing.

This tool is for illustrative purposes only and does not constitute financial or tax advice. Calculations use 2025/26 income tax, National Insurance, and student loan rates as illustrative figures. Actual rates, thresholds, and allowances are subject to change and may differ from the figures used. Scottish income tax rates apply to Scottish taxpayers as determined by HMRC based on main place of residence. The tool does not model benefits in kind, tax code adjustments, salary sacrifice for benefits other than pension, employer pension contributions, marriage allowance, childcare deductions, or other payroll adjustments. National Insurance uses employee Class 1 rates only. Student loan thresholds are illustrative. The Personal Allowance taper applies to adjusted net income above £100,000. For a precise take-home pay figure, refer to your payslip. Actual outcomes will depend on your individual circumstances.