Gross to Net Salary Calculator 2025/26 — UK Take-Home Pay

Gross to Net Salary UK 2025/26 — How Your Take-Home Pay Is Calculated

Your gross salary is what your employer pays before any deductions. Your net pay (take-home) is what arrives in your bank after income tax, National Insurance, pension contributions, and any other deductions have been removed. Understanding exactly how each deduction is calculated helps you check your payslip for errors, plan financially, and make informed decisions about salary increases, pension contributions, and salary sacrifice schemes.

Income Tax — How It Works for 2025/26

Income tax is calculated on a cumulative basis throughout the tax year. The thresholds for 2025/26 are:

• Personal Allowance: £12,570 — no income tax
• Basic rate (20%): £12,571 to £50,270
• Higher rate (40%): £50,271 to £125,140
• Additional rate (45%): Over £125,140
• Personal Allowance taper: Reduced by £1 for every £2 above £100,000 — fully eliminated at £125,140

Tax rates apply only to income within each band — a pay rise into the higher rate band does not cause all previous income to be taxed at 40%.

National Insurance — Rates and Thresholds

Employee NI Class 1 rates for 2025/26:

• Below Primary Threshold (£12,570): 0%
• Primary Threshold to Upper Earnings Limit (£12,571–£50,270): 8%
• Above Upper Earnings Limit (over £50,270): 2%

The sharp drop from 8% to 2% above the upper earnings limit is why a salary increase near £50,270 has a different net effect than the same increase at lower earnings. At £50,000 gross, NI costs approximately £3,034/year. At £60,000, NI costs approximately £3,634 — the additional £10,000 of salary attracts only 2% NI (£200) above the upper limit.

Scottish Income Tax Rates 2025/26

Scottish residents pay different income tax rates on non-savings income:

• Starter rate (19%): £12,571 to £14,876
• Basic rate (20%): £14,877 to £26,561
• Intermediate rate (21%): £26,562 to £43,662
• Higher rate (42%): £43,663 to £75,000
• Advanced rate (45%): £75,001 to £125,140

A Scottish resident earning £50,000 pays more income tax than a non-Scottish UK resident at the same salary — the Scottish higher rate threshold (£43,662) is lower than the UK threshold (£50,270) and the Scottish higher rate (42%) exceeds the UK rate (40%).

Pension Contributions — Impact on Take-Home Pay

How your pension contribution is made affects your take-home pay differently:

• Salary sacrifice: Deducted before tax and NI — saves both income tax and NI on the contribution. Most tax-efficient method.
• Net pay arrangement: Deducted from gross before tax but not always before NI — saves income tax, partial NI benefit.
• Relief at source: Deducted from net pay, topped up by HMRC with basic rate tax relief — saves income tax only, not NI.

For a basic rate taxpayer contributing £100/month, salary sacrifice delivers approximately £128 into the pension pot (saving income tax plus 8% NI = 28% effective contribution), while relief at source delivers approximately £125 (saving only 20% income tax).

Student Loan Repayments

Student loan deductions appear as a separate line on your payslip. Rates for 2025/26: Plan 5 (from 2023/24) repays 9% of income above £25,000; Plan 2 (pre-2023) repays 9% above £27,295; Plan 1 repays 9% above £24,990. Deductions are automatic via PAYE once HMRC notifies your employer. You repay nothing below your threshold regardless of your outstanding loan balance.

Tax Code — What It Means

Your tax code tells your employer how much of your pay should be free from income tax. The most common code is 1257L (£12,570 personal allowance). Other codes: BR (taxed at basic rate on all income — often for a second job), 0T (no personal allowance), K codes (negative allowance — additional tax collected through your code). Check your tax code on your personal tax account or P60 — incorrect codes can mean paying too much or too little tax throughout the year.

Overpaid and Underpaid Tax

At the end of each tax year, HMRC reconciles the tax you have paid through PAYE against what you actually owed based on your total income. If you have been on an incorrect tax code, had multiple employments in the same year, or received a bonus that pushed you into a different tax band, you may have overpaid or underpaid. HMRC issues a P800 (for underpayments) or a tax repayment notification (for overpayments) usually by October following the end of the tax year. If you receive a P800 showing underpaid tax, HMRC will typically collect it by adjusting your tax code over the following year rather than demanding immediate payment.

The most common cause of an incorrect take-home pay figure is an incorrect tax code. If you have recently changed jobs, had a benefits in kind added or removed, received a HMRC coding notice you did not understand, or had income from multiple sources, your tax code may be wrong. Always check your current tax code against your circumstances using HMRC's personal tax account — correcting an incorrect code can result in an immediate improvement in monthly net pay and recovery of any overpaid tax from earlier in the year.

Regularly checking your payslip against your expected take-home calculation is good financial practice that most employees never do. A payslip error — wrong tax code, wrong NI category, missed salary increase, or incorrect student loan deduction — can cost you money month after month until you notice. If you use a gross-to-net calculator to verify each month's expected net pay against what you actually receive, you will quickly identify any discrepancies and can raise them with your payroll department before they accumulate. Most payroll errors, once identified, are corrected promptly and any overpayment or underpayment is resolved in the next payroll run.

Frequently Asked Questions