Tax Deductions Calculator UK 2025/26
See every deduction from your salary in one place. Enter your gross pay and instantly get a complete payslip breakdown showing income tax by band, National Insurance, student loan repayments, and pension contributions. Know exactly where your money goes.
Where Your Salary Goes
2025/26 Tax Deduction Rates
| Deduction | Rate | Threshold |
|---|---|---|
| Personal Allowance | 0% | First £12,570 |
| Basic Rate Tax | 20% | £12,571 – £50,270 |
| Higher Rate Tax | 40% | £50,271 – £125,140 |
| Additional Rate Tax | 45% | Over £125,140 |
| Employee NI (Main) | 8% | £12,570 – £50,270 |
| Employee NI (Upper) | 2% | Over £50,270 |
| Student Loan Plan 1 | 9% | Over £26,065 |
| Student Loan Plan 2 | 9% | Over £28,470 |
| Student Loan Plan 4 | 9% | Over £32,745 |
| Student Loan Plan 5 | 9% | Over £25,000 |
| Postgraduate Loan | 6% | Over £21,000 |
Scottish Income Tax Rates 2025/26
| Band | Rate | Taxable Income |
|---|---|---|
| Personal Allowance | 0% | Up to £12,570 |
| Starter Rate | 19% | £12,571 – £14,876 |
| Scottish Basic | 20% | £14,877 – £26,561 |
| Intermediate | 21% | £26,562 – £43,662 |
| Higher | 42% | £43,663 – £75,000 |
| Advanced | 45% | £75,001 – £125,140 |
| Top Rate | 48% | Over £125,140 |
Understanding Your Payslip Deductions
Every time you receive your pay, several deductions are taken before you see your take-home amount. For most UK employees, the two biggest deductions are income tax and National Insurance, which together can account for 20% to 40% of your gross salary depending on what you earn. Understanding these deductions is not just a curiosity — it matters for your financial planning, mortgage applications, budgeting, and knowing whether your employer is deducting the correct amounts.
Your payslip should show each deduction separately, but many people glance at the net figure without understanding the numbers above it. This calculator breaks down every penny so you can see exactly how much goes to HMRC in income tax, how much is taken for National Insurance contributions, what your student loan repayment costs you each month, and how your pension contributions affect your take-home pay. If something looks wrong on your payslip, this tool gives you the benchmark to check against.
The deductions on your payslip fall into two categories: statutory deductions that your employer must withhold by law (income tax and National Insurance), and voluntary deductions that you have agreed to (pension contributions, student loan repayments triggered by earning above the threshold, salary sacrifice schemes, and any charitable giving through payroll giving). Your employer sends the statutory deductions directly to HMRC through the PAYE system, usually on a monthly basis.
2025/26 Tax Deduction Rates
The 2025/26 tax year runs from 6 April 2025 to 5 April 2026. The key rates that determine your deductions are set by HMRC and the Scottish Government. Here is a complete breakdown of every rate and threshold that affects your pay.
Income tax is charged on your taxable income after deducting your personal allowance of £12,570. For most of England, Wales, and Northern Ireland, the basic rate of 20% applies to income between £12,571 and £50,270, the higher rate of 40% applies between £50,271 and £125,140, and the additional rate of 45% applies to everything above £125,140. If you earn over £100,000, your personal allowance is reduced by £1 for every £2 you earn above that threshold, effectively disappearing entirely at £125,140 — creating a 60% marginal tax rate in that band.
National Insurance contributions for employees (Class 1) are charged at 8% on earnings between the Primary Threshold of £12,570 and the Upper Earnings Limit of £50,270, and at 2% on all earnings above £50,270. Unlike income tax, NI is calculated on a per-pay-period basis rather than annually, though the annual figures give a reliable guide for salaried employees on a consistent wage.
Student loan repayments are not technically a tax, but they are deducted through your payslip in the same way. Plan 1 borrowers (those who started university before September 2012, or in Northern Ireland) repay 9% of earnings over £26,065. Plan 2 borrowers (England and Wales, post-2012) repay 9% over £28,470.
Plan 4 (Scotland) uses a £32,745 threshold, Plan 5 (post-2023 starters) uses £25,000, and postgraduate loans charge 6% on earnings over £21,000. If you have both an undergraduate and postgraduate loan, both are deducted at the same time.
Common Tax Deductions You Can Claim
Beyond the automatic deductions on your payslip, there are several tax-deductible expenses that can reduce your overall tax bill. Many employees miss out on these because they do not realise they qualify. You claim them through form P87 (if under £2,500) or through self-assessment, and they reduce your taxable income — saving you 20% or 40% of the claimed amount depending on your tax band.
- Working from home allowance: If your employer requires you to work from home (not by choice), you can claim £6 per week (£312 per year) without providing receipts. This saves £62.40 per year for basic-rate taxpayers or £124.80 for higher-rate taxpayers. If your actual costs are higher, you can claim the real amount with evidence.
- Professional subscriptions: Annual membership fees to HMRC-approved professional bodies are tax-deductible. This includes bodies like the RICS, ACCA, BMA, Law Society, CIPD, and hundreds of others. The fee must be relevant to your employment. A £200 subscription saves you £40 (basic rate) or £80 (higher rate) in tax.
- Uniform and clothing washing allowance: If you wear a recognisable uniform or specialist clothing for work and have to wash it yourself, you can claim a flat-rate deduction. Most occupations qualify for £60 per year. Healthcare workers, cabin crew, and certain trades get higher amounts. This saves £12 to £24 per year depending on your tax band.
- Mileage allowance: If you use your own vehicle for business journeys (not commuting), you can claim 45p per mile for the first 10,000 miles and 25p per mile after that. Your employer may pay part of this, and you claim the difference. A sales representative driving 12,000 business miles per year with no employer reimbursement could claim £5,000 in tax relief.
- Tools and equipment: If you buy tools, specialist equipment, or reference materials required for your job and your employer does not reimburse you, the cost is tax-deductible. This is common in trades, engineering, and IT. A plumber spending £500 on tools saves £100 to £200 in tax.
Tax-Free Allowances Explained
The UK tax system includes several allowances that reduce or eliminate tax on certain portions of your income. Knowing which ones apply to you can make a meaningful difference to your take-home pay.
Personal allowance (£12,570): The most significant allowance, this is the amount of income you can earn before paying any income tax. It applies to almost everyone, but is reduced for those earning over £100,000. For every £2 you earn above £100,000, your personal allowance is reduced by £1.
This means it reaches zero at £125,140, and earners in the £100,000 to £125,140 range face an effective 60% marginal tax rate. Your tax code reflects your personal allowance — the standard code 1257L means a £12,570 allowance.
Marriage allowance: If one partner earns less than £12,570 and the other is a basic-rate taxpayer, the lower earner can transfer £1,260 of their personal allowance to their partner. This saves the recipient up to £252 per year in income tax. You apply online through HMRC and can backdate claims for up to four years.
Blind person's allowance (£3,070): If you are registered blind or severely sight impaired, you receive an additional £3,070 tax-free allowance on top of your personal allowance. This can also be transferred to a spouse or civil partner if not fully used.
Trading allowance (£1,000): If you earn up to £1,000 from self-employment or casual income (such as selling items, freelancing, or renting out a driveway), you do not need to report it to HMRC or pay tax on it. This is separate from your employment income and personal allowance.
How Pension Contributions Affect Your Deductions
Your pension contributions can significantly change your take-home pay, but the impact depends on whether your scheme uses salary sacrifice or relief at source. Understanding the difference can save you hundreds of pounds per year.
Salary sacrifice (before tax): With this method, you agree to reduce your contractual gross salary by the amount of your pension contribution. Because your gross salary is lower, you pay less income tax and less National Insurance on the reduced amount. For example, on a £40,000 salary with 5% salary sacrifice, your pension contribution is £2,000, but your taxable salary drops to £38,000.
You save £400 in income tax (20%) plus £160 in NI (8%) = £560 total saving beyond the pension contribution itself. Your employer also saves 15% employer NI on the sacrificed amount (£300), which many employers pass on as an additional pension contribution.
Relief at source (after tax): With this method, the pension contribution is taken from your net pay after tax and NI have been calculated. However, your pension provider claims back basic-rate tax (20%) from HMRC and adds it to your pension pot. So if you contribute £160, HMRC adds £40, and £200 goes into your pension.
Higher-rate taxpayers need to claim the additional 20% relief (on the gross contribution amount) through their self-assessment tax return — this is not automatic. Many higher-rate taxpayers miss this, losing out on hundreds of pounds per year.
The practical difference: salary sacrifice gives you an immediate, automatic NI saving that relief at source does not. For a basic-rate taxpayer contributing 5% on a £35,000 salary, salary sacrifice saves approximately £140 more per year than relief at source, because the NI saving only applies to salary sacrifice. For higher-rate taxpayers, the gap is even wider.
Example Scenarios
Scenario 1: £25,000 Salary — Basic Rate, Student Loan Plan 2, 5% Pension
Gross salary: £25,000
Pension (salary sacrifice 5%): £1,250
Adjusted gross: £23,750
Income tax: (£23,750 - £12,570) x 20% = £2,236.00
National Insurance: (£23,750 - £12,570) x 8% = £894.40
Student loan Plan 2: No repayment (£23,750 below £28,470 threshold after salary sacrifice adjustment — note: student loan is calculated on original gross of £25,000, so (£25,000 - £28,470) = £0 as salary is below threshold)
Take-home: £20,619.60 per year / £1,718.30 per month
Scenario 2: £35,000 Salary — No Student Loan, 3% Pension
Gross salary: £35,000
Pension (salary sacrifice 3%): £1,050
Adjusted gross: £33,950
Income tax: (£33,950 - £12,570) x 20% = £4,276.00
National Insurance: (£33,950 - £12,570) x 8% = £1,710.40
Student loan: None
Take-home: £26,913.60 per year / £2,242.80 per month
Scenario 3: £50,000 Salary — Higher Rate Threshold, Student Loan Plan 1
Gross salary: £50,000
Pension (salary sacrifice 5%): £2,500
Adjusted gross: £47,500
Income tax: (£47,500 - £12,570) x 20% = £6,986.00
National Insurance: (£47,500 - £12,570) x 8% = £2,794.40
Student loan Plan 1: (£50,000 - £26,065) x 9% = £2,250.90
Take-home: £35,468.70 per year / £2,955.73 per month
Scenario 4: £80,000 Salary — Higher Rate, No Student Loan, 8% Pension
Gross salary: £80,000
Pension (salary sacrifice 8%): £6,400
Adjusted gross: £73,600
Income tax: Basic (£50,270 - £12,570) x 20% = £7,540 + Higher (£73,600 - £50,270) x 40% = £9,332 = £16,872.00
National Insurance: (£50,270 - £12,570) x 8% = £3,016 + (£73,600 - £50,270) x 2% = £466.60 = £3,482.60
Student loan: None
Take-home: £53,245.40 per year / £4,437.12 per month
How to Use This Calculator
Our Tax Deductions Calculator gives you an instant, line-by-line payslip breakdown for the 2025/26 tax year. Follow these three steps to see exactly where your money goes.
Step 1: Enter Your Gross Salary and Tax Code
Type your annual gross salary into the salary field, or switch the pay frequency to monthly or weekly if that is how you think about your pay. The calculator converts everything to annual figures automatically. Enter your tax code — you can find this on your payslip, P45, or P60.
The default 1257L gives a £12,570 personal allowance. If your code starts with S (e.g. S1257L), Scottish tax rates are applied.
Codes like BR (all basic rate) or D0 (all higher rate) are also supported. If your code includes K, your allowance is negative, meaning extra income is added to your taxable amount.
Step 2: Set Your Student Loan and Pension Details
Select your student loan plan from the dropdown. If you do not have a student loan, leave it as "None". Enter your pension contribution percentage — the default is 5%, which is the standard employee contribution under auto-enrolment (3% minimum employer + 5% minimum employee).
Choose whether your pension operates as salary sacrifice (before tax — the most common arrangement) or relief at source (after tax). If you participate in any salary sacrifice schemes such as cycle to work or an electric car scheme, tick those boxes and enter the annual amounts.
Step 3: Review Your Complete Payslip Breakdown
Results update instantly as you type. The top row shows your annual, monthly, and weekly take-home pay plus your effective tax rate. Below that, the payslip-style breakdown lists every deduction line by line, including income tax split by band, National Insurance at each rate, student loan repayments, and pension contributions.
The donut chart shows visually how your salary is divided between take-home pay, tax, NI, pension, and student loan. Use the Print, Download, or Copy buttons to save your results.
Understanding Your Results
Annual, Monthly, and Weekly Take-Home Pay
The highlighted blue box shows your annual net pay — this is the total amount deposited into your bank account over the entire tax year after all deductions. The monthly figure divides this by 12 (suitable for monthly-paid employees), and the weekly figure divides by 52. These are the amounts you should use for budgeting, mortgage affordability calculations, and financial planning.
Effective Tax Rate
The purple box shows your effective (or average) tax rate. This is your total deductions (tax + NI + student loan + pension) as a percentage of your gross salary. It is always lower than your highest marginal rate because only a portion of your income is taxed at each band.
Someone earning £50,000 might have a 40% marginal rate but an effective rate of around 25-30% depending on their deductions. This single number tells you what proportion of every pound earned goes to deductions overall.
Employer NI
The additional information box showing employer NI reveals what your employer pays on top of your salary to HMRC. This is not deducted from your pay, but it represents the true cost of employing you. For 2025/26, employer NI is 15% on all earnings above £5,000.
On a £35,000 salary, your employer pays an additional £4,500. This information is useful when negotiating salary or comparing the total cost of employment.
The Payslip Breakdown
The detailed payslip section mirrors what you see on your actual payslip, broken into individual lines. It starts with your gross salary, deducts any salary sacrifice amounts, then shows income tax split across each band you fall into, National Insurance at the main and upper rates, student loan repayments, and any after-tax pension contributions. The final line is your net take-home pay. Compare this against your real payslip to verify your employer is calculating your deductions correctly.
Official Sources & Methodology
How Tax Deductions Calculator Works
This calculator estimates your National Insurance contributions using current 2025/26 HMRC rates. National Insurance (NI) is a payroll tax that funds the State Pension, NHS, and benefits system. Both employees and employers pay NI, though at different rates and thresholds.
Your NI contributions build entitlement to the State Pension and certain benefits. You need 35 qualifying years of contributions for the full new State Pension (£230.25 per week in 2025/26) and at least 10 qualifying years for any pension at all.
Key Information for 2025/26
Employee NI (Class 1): 8% on earnings between £12,570 and £50,270, then 2% above £50,270. Employer NI: 15% on earnings above £5,000 per employee (threshold reduced from £9,100 in April 2025). Self-employed NI: Class 2 at £3.45/week (if profits exceed £12,570) and Class 4 at 6% between £12,570 and £50,270, then 2% above.
Example Calculation
An employee earning £40,000: NI = (£40,000 - £12,570) x 8% = £2,194 per year (£183 per month). Their employer pays (£40,000 - £5,000) x 15% = £5,250 in employer NI. The total NI cost on this salary is £7,444 combined.
Source: Based on official HMRC 2025/26 NI rates. Last updated March 2026.
Full List of UK Tax Deduction Categories 2025/26
Understanding every deduction from your salary helps you verify your payslip is correct and identify opportunities to reduce your tax bill legally.
| Deduction Type | Rate / Amount | Mandatory? |
|---|---|---|
| Income Tax (Basic) | 20% on £12,571 – £50,270 | Yes (PAYE) |
| Income Tax (Higher) | 40% on £50,271 – £125,140 | Yes (PAYE) |
| Income Tax (Additional) | 45% above £125,140 | Yes (PAYE) |
| Employee NI | 8% (£12,570–£50,270), 2% above | Yes (PAYE) |
| Workplace Pension | Minimum 5% employee | Auto-enrolment (opt out available) |
| Student Loan (Plan 1) | 9% above £24,990 | If applicable |
| Student Loan (Plan 2) | 9% above £27,295 | If applicable |
| Postgraduate Loan | 6% above £21,000 | If applicable |
| Salary Sacrifice (cycle-to-work, EV, childcare) | Varies | Optional |
Source: GOV.UK — Income Tax Rates and NI Rates
Common Allowable Tax Deductions for UK Employees
As an employee, you can claim tax relief on certain work-related expenses. These deductions reduce your taxable income, saving you 20% (basic rate) or 40% (higher rate) of the amount claimed.
| Allowable Deduction | Amount | Tax Saved (20%) | Tax Saved (40%) |
|---|---|---|---|
| Working from home allowance | £312/year | £62.40 | £124.80 |
| Professional subscriptions (HMRC approved list) | Varies | 20% of fee | 40% of fee |
| Uniform / work clothing washing | £60/year | £12.00 | £24.00 |
| Mileage allowance (first 10,000 miles) | 45p/mile | 9p/mile | 18p/mile |
| Mileage allowance (over 10,000 miles) | 25p/mile | 5p/mile | 10p/mile |
| Tools and specialist equipment | Actual cost | 20% | 40% |
Claims under £2,500 per year can be made via form P87. Larger claims require a Self Assessment tax return. You can backdate claims up to 4 years.
HMRC Key Dates and Deadlines 2025/26
These are the important HMRC deadlines for the 2025/26 tax year. Missing deadlines can result in penalties.
| Date | Deadline |
|---|---|
| 6 April 2025 | 2025/26 tax year starts |
| 31 May 2026 | Employers issue P60s for 2025/26 |
| 6 July 2026 | Employers submit P11D forms (benefits in kind) |
| 5 October 2026 | Register for Self Assessment if new |
| 31 October 2026 | Paper Self Assessment deadline |
| 31 January 2027 | Online Self Assessment deadline + tax payment due |
| 31 July 2027 | Second payment on account due |
Late filing penalty: £100 if 1 day late, £10/day after 3 months (max £900), plus 5% of tax owed after 30 days, 6 months and 12 months.
Record Keeping Requirements for Tax Deductions
If you claim tax deductions or complete a Self Assessment return, HMRC requires you to keep records for specific periods.
- Employees (PAYE only): Keep payslips, P60s, and P11Ds for at least 22 months after the end of the tax year
- Self Assessment filers: Keep all records for at least 5 years and 10 months after the end of the tax year (e.g., 2025/26 records until 31 January 2032)
- Self-employed: Keep records for at least 5 years from the 31 January filing deadline
- Capital Gains Tax records: Keep for 5 years and 10 months after the end of the tax year of disposal
What to keep: Bank statements, receipts for expenses claimed, invoices, mileage logs, P60 and P45 forms, dividend vouchers, rental income records, and any correspondence from HMRC.
Source: GOV.UK — Keeping Your Records
Frequently Asked Questions
The main deductions from a UK salary are income tax (20%, 40%, or 45% depending on your earnings), National Insurance contributions (8% on earnings between £12,570 and £50,270, then 2% above), student loan repayments if applicable (9% above your plan's threshold), and pension contributions (typically 5% under auto-enrolment). Your employer deducts these through the PAYE system and sends them directly to HMRC each month.
On a £30,000 salary with the standard 1257L tax code and no salary sacrifice, you pay £3,486 in income tax (£17,430 at 20%) and £1,394.40 in National Insurance (£17,430 at 8%). With a 5% pension contribution of £1,500 via salary sacrifice, your taxable pay drops to £28,500, reducing tax to £3,186 and NI to £1,274.40. Your take-home pay is approximately £23,039.60 per year or £1,920 per month.
National Insurance is a payroll tax that funds the NHS, state pension, and social security. Employees pay 8% on earnings between £12,570 and £50,270 (the main rate), and 2% on everything above £50,270 (the upper rate). It is calculated per pay period — your employer deducts it each time you are paid. Unlike income tax, there is no annual reconciliation, so overpayments are rare unless you change jobs mid-year.
Student loan repayments are deducted automatically once you earn above the threshold for your plan. Plan 1: 9% over £26,065. Plan 2: 9% over £28,470.
With salary sacrifice, your gross pay is reduced before tax and NI are calculated, so you save on both. With relief at source, your pension provider reclaims basic-rate tax from HMRC — but you still pay full NI. Higher-rate taxpayers with relief at source must claim the extra 20% via self-assessment.
Employees can claim tax relief on: working from home allowance (£6/week without receipts), professional body subscriptions (HMRC-approved list), uniform washing allowance (£60/year for most roles), business mileage in your own vehicle (45p/mile up to 10,000 miles, 25p after), and tools or equipment your employer does not provide. Claims under £2,500 use form P87; larger amounts go through self-assessment. Each claim reduces your taxable income, saving 20% or 40% of the amount.
The personal allowance for 2025/26 is £12,570. This is the amount you can earn tax-free each year. It is represented by tax code 1257L on your payslip. The personal allowance has been frozen at £12,570 since April 2021 and will remain so until at least April 2028 under the current government freeze. For every £2 you earn above £100,000, you lose £1 of personal allowance, and it is completely removed at £125,140.
Marriage allowance lets a lower-earning spouse or civil partner transfer £1,260 of their personal allowance to their partner, saving the higher earner up to £252 per year in income tax. To qualify, the lower earner must have income below £12,570 and the higher earner must be a basic rate (20%) taxpayer with income between £12,571 and £50,270. You can backdate claims up to 4 years. Apply via GOV.UK — it is applied via a change in tax code.
Gift Aid allows UK charities to reclaim basic-rate tax (20%) on donations. If you are a higher-rate (40%) or additional-rate (45%) taxpayer, you can claim back the difference between your tax rate and the basic rate through self-assessment. For example, a £100 Gift Aid donation costs a basic-rate taxpayer £100, but a higher-rate taxpayer can reclaim 20%, making the effective cost just £80. This is one of the few ways employed higher-rate taxpayers can reduce their tax bill without a pension.
UK income tax bands for 2025/26 (England, Wales and Northern Ireland): Personal allowance £0–£12,570 at 0%; Basic rate £12,571–£50,270 at 20%; Higher rate £50,271–£125,140 at 40%; Additional rate above £125,140 at 45%. Scotland has separate rates: Starter (19%), Basic (20%), Intermediate (21%), Higher (42%), Advanced (45%) and Top (48%). All rates apply to taxable income above the personal allowance.
From April 2025, employer National Insurance increased to 15% on earnings above £5,000 per employee per year (the Secondary Threshold was reduced from £9,100 to £5,000). This is paid by your employer on top of your salary — it does not appear on your payslip — but it increases the total cost of employing you. The Employment Allowance also increased to £10,500 from April 2025, reducing the NI bill for smaller employers.
On a £50,000 salary with standard tax code 1257L and no pension or student loan: Income tax = £7,486 (£37,430 at 20%). National Insurance = £2,966.40 (£37,700 at 8% — capped at £50,270). Total deductions = £10,452.40. Take-home pay ≈ £39,547.60 per year (£3,295.63/month). With a 5% salary sacrifice pension of £2,500, taxable income drops to £47,500, saving approximately £500 in combined income tax and NI.
PAYE employees should keep payslips, P60s and P11Ds for at least 22 months after the tax year ends. Self Assessment filers must retain records for 5 years and 10 months after the filing deadline (e.g. 2025/26 records until 31 January 2032). Keep bank statements, expense receipts, mileage logs and any HMRC correspondence.
If your employer requires you to work from home, you can claim the flat rate of £6 per week (£312/year) without receipts. This saves £62.40 at the basic rate or £124.80 at the higher rate. Alternatively, claim exact costs with receipts. This relief only applies when your employer requires home working, not when you choose to. Apply via HMRC online or form P87.
The online Self Assessment deadline for the 2025/26 tax year is 31 January 2027. Paper returns must be filed by 31 October 2026. Late filing incurs an immediate £100 penalty, rising to £10/day after 3 months (max £900). If you also owe tax, interest and further penalties of 5% of the outstanding amount apply at 30 days, 6 months and 12 months late.
You cannot claim mileage for your regular commute. However, you can claim for business journeys in your own vehicle at 45p/mile for the first 10,000 miles and 25p/mile after that. This includes travel to temporary workplaces, client visits, and training courses. If your employer pays you less than 45p/mile, you can claim the difference as tax relief.
HMRC maintains an approved list of professional bodies. Common examples include BMA (doctors), RICS (surveyors), ICAEW/ACCA (accountants), Law Society (solicitors), IET (engineers), CIPD (HR professionals), and NMC (nurses). The subscription must be relevant to your employment. Check the full list at gov.uk/guidance/approved-professional-organisations-and-learned-societies.
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Official Sources
UK Calculator Editorial Team
Our calculators are maintained by qualified accountants and financial analysts. All tools use official HMRC, ONS, and NHS data. Learn more about our team.
Frequently Asked Questions
Official Sources & References
Data verified against official UK government sources. Last checked April 2026.