Rates, bands & allowances
What HMRC charges on your income this tax year — with visual breakdowns for sole traders and employees.
Key Allowances
Income Tax Bands — England, Wales & Northern Ireland 2024/25
How your income is divided across tax bands. You only pay each rate on the portion of income that falls within that band — not your whole salary.
How banding works — a visual example
With a salary of £55,000 — you don't pay 40% on all of it. You pay each rate only on the slice of income that falls within that band.
National Insurance 2024/25
Self-Employed NI (Class 2 & 4)
Paid through your Self Assessment return. Nothing separate to set up.
🔗 Self-employed NI on gov.uk →Sole Trader — Total Tax at Different Profit Levels
Estimated combined Income Tax + Class 2 + Class 4 NI on self-employment profits. Illustrative — assumes no expenses or pension contributions.
🔗 Self Assessment on gov.uk →Take-home pay calculator
Estimate your net pay after Income Tax, National Insurance, pension, and student loan. Adjust any field and results update instantly.
What you can and can't claim
HMRC says expenses must be wholly and exclusively for business purposes. Tap any item for the detail and gov.uk source.
HMRC flat rates: £10/month (25–50 hrs), £18/month (51–100 hrs), £26/month (101+ hrs). No receipts needed.
🔗 gov.uk →100% of rent and utility bills for a separate business workspace are allowable.
🔗 gov.uk →Pens, paper, printer ink used for business. Keep receipts.
🔗 gov.uk →Cannot claim full home costs — only the business proportion via HMRC's simplified flat rates.
🔗 gov.uk →HMRC flat rate: 45p/mile for first 10,000 business miles, then 25p/mile. Keep a mileage log with dates, destinations, and purpose.
🔗 gov.uk →Train, bus, taxi fares for genuine business journeys — fully allowable. Keep receipts.
🔗 gov.uk →Hotel costs for business trips are allowable. HMRC publishes benchmark subsistence rates for meals.
🔗 gov.uk →HMRC considers travel between home and a permanent workplace as personal — not deductible.
🔗 gov.uk →100% allowable if wholly for business. Mixed use — only the business proportion. Can use Annual Investment Allowance for full cost in year of purchase.
🔗 gov.uk →Business proportion of phone bill allowable. Dedicated business phone — 100%.
🔗 gov.uk →Accounting software, design tools, cloud storage used for business — all allowable.
🔗 gov.uk →Only the business proportion is deductible — not the full bill.
🔗 gov.uk →Fees for tax return preparation or bookkeeping — fully allowable.
🔗 gov.uk →Membership of a professional body relevant to your trade is allowable.
🔗 gov.uk →Training that improves existing trade skills is allowable. Learning a new trade — not allowable.
🔗 gov.uk →HMRC fines, parking fines, and legal penalties are never allowable.
🔗 gov.uk →Domain, hosting, web design and maintenance for your business website — fully allowable.
🔗 gov.uk →Online ads, print advertising, business cards — all allowable.
🔗 gov.uk →HMRC explicitly says client entertaining is not an allowable business expense.
🔗 gov.uk →Tax codes, payslips & salary sacrifice
Plain-English explanations of everything on your payslip — sourced from HMRC gov.uk.
Tax Codes
How codes work
The number in your code multiplied by 10 gives your tax-free allowance. The letter indicates what type of allowance applies. Most employees have 1257L — meaning £12,570 personal allowance, standard rate.
| Code | What it means |
|---|---|
| 1257L | Standard. £12,570 personal allowance. Most employees. |
| BR | Basic Rate — all income taxed at 20%. Often used for a second job. |
| 0T | No personal allowance. All income taxed. Used when HMRC has no info or allowance used up. |
| D0 | All income taxed at 40%. Usually for a second job. |
| D1 | All income taxed at 45%. |
| W1 / M1 | Emergency code. Tax calculated on each pay period independently — often causes overpayment. |
| K | You have untaxed income exceeding your allowance. HMRC adds tax to your pay rather than reducing it. |
| S | Scottish rates apply (e.g. S1257L). |
| C | Welsh rates apply (e.g. C1257L). |
HMRC uses an emergency tax code (1257L W1, 1257L M1, or 0T) when your employer doesn't have enough information. W1/M1 codes treat each pay period independently — so you don't benefit from unused allowance earlier in the year, often causing overpayment.
Your Payslip Explained
Gross pay is your full salary before deductions. Income Tax is calculated using your tax code and cumulative earnings. NI for employees is 8% on earnings £12,570–£50,270 (2024/25). Pension shown here is auto-enrolment minimum (5% employee contribution).
🔗 Understanding your payslip on gov.uk →P60 — End of year certificate
Your employer must give you a P60 by 31 May after each tax year ends. It shows your total pay and all deductions. You need it for Self Assessment, tax refund claims, and proving your income (e.g. mortgage applications).
P45 — When you leave a job
Given when you leave employment. Shows pay and tax for the year to that point. Give parts 2 and 3 to your new employer — this prevents an emergency tax code and means you're taxed correctly from day one.
P11D — Benefits in kind
If your employer provides a company car, private medical insurance, or interest-free loans, the value is reported on a P11D. HMRC adds this to your taxable income — usually collected via a tax code adjustment. You pay Income Tax on the value of the benefit.
🔗 P45, P60 and P11D on gov.uk →Salary Sacrifice & Benefits
Salary sacrifice is an agreement between you and your employer to give up part of your cash salary in exchange for a benefit. Because your gross salary is lower, you pay less Income Tax and less National Insurance. Your employer also saves NI — they may pass this on as an extra pension contribution.
Salary sacrifice pension: Contributions come out before tax is calculated. You save Income Tax AND National Insurance. Your employer may also pass on their NI saving as an extra contribution into your pot.
Relief at source: You contribute from net pay. Your pension provider claims 20% basic rate tax relief from HMRC and adds it to your pot automatically. Higher-rate taxpayers claim the extra 20% through Self Assessment.
Overpayments are common when you start or finish a job mid-year, are put on an emergency code, were only employed part of the year, or had multiple jobs. HMRC issues a P800 letter at year end if they calculate an overpayment — you can then claim online.
Step-by-step walkthroughs
Tick each step as you complete it. Every step links to the original HMRC gov.uk source.
Self Assessment
Annual tax return · Deadline 31 January
HMRC says you must file if you were self-employed and earned more than £1,000, or if HMRC has sent you a notice to file.
Go to gov.uk/register-for-self-assessment. HMRC posts your UTR (10-digit number) within 10 working days — it cannot be emailed. You need it to file.
You'll need: all invoices paid, expense receipts, P60/P45 if also employed, bank statements, UTR, NI number, Government Gateway login.
· Employment: Complete if also employed (use your P60)
· UK interest: Savings interest over £500
· UK property: If you have rental income
· Capital gains: If you sold assets or property
· Dividends: Limited company directors only
Check your profit figure, turnover, and expenses. HMRC allows amendments up to 12 months after the original deadline if you spot an error.
🔗 Self Assessment on gov.uk →Pay via gov.uk/pay-self-assessment-tax-bill. Use Faster Payments — instant, free, use your UTR as reference. Interest accrues at 7.25%/year from 1 February.
🔗 Pay your bill →VAT Return
File quarterly · 1 month + 7 days after period end
Cannot file manually through Government Gateway. Use FreeAgent, QuickBooks, Xero, Sage, or another MTD-compatible tool.
Total VAT on all your sales invoices for the period. The VAT you collected from customers to pass on to HMRC.
🔗 Completing your return →Total VAT on your business purchase receipts that you're reclaiming. Only genuine business costs.
🔗 Completing your return →Box 1 minus Box 4. Positive = you owe HMRC. Negative = HMRC owes you. Calculated automatically by your software.
🔗 Completing your return →Box 6: total sales excluding VAT. Box 7: total purchases excluding VAT. Net figures only — do not include VAT in these boxes.
🔗 Completing your return →File via your MTD software. Payment due same date. Points-based penalty system since Jan 2023 — 4 points earns a £200 penalty.
Register as Self-Employed
Deadline: 5 October in second year of trading
Register if you earned more than £1,000 from self-employment in a tax year, or want to pay Class 2 NI to protect State Pension entitlement.
Go to gov.uk/register-for-self-assessment. You'll need your NI number, contact details, business start date, and description of your trade.
🔗 Register online →HMRC posts your UTR — a 10-digit number — within 10 working days. It cannot be emailed or given by phone. You need it to file your return. Register early.
🔗 Find your UTR →Class 2 and Class 4 NI for sole traders are both calculated and paid through your Self Assessment return — there is nothing extra to register for.
🔗 NI for self-employed →Register for VAT
Compulsory above £90,000 taxable turnover
HMRC requires registration when taxable turnover exceeds £90,000 in any rolling 12-month period, or if you expect to exceed £90,000 in the next 30 days.
Useful if your customers are VAT-registered businesses (they can reclaim the VAT you charge), or if you want to reclaim VAT on your own purchases.
🔗 Voluntary registration →Register at gov.uk/vat-registration via Government Gateway. Then sign up for Making Tax Digital for VAT — required before your first return.
🔗 How to register →Deadlines for sole traders
All dates sourced from HMRC gov.uk. Tap any deadline to view the original guidance.
MTD for Income Tax starts April 2026 for sole traders earning over £50,000, and April 2027 for those over £30,000.
🔗 MTD for Income Tax on gov.uk →How to find and consolidate old pension pots
The average UK worker has 11 jobs in their lifetime — meaning potentially 11 different pension pots. Here's how to find them and bring them together.
Go through your employment history and note every employer, with approximate dates. Check old payslips, P60s, or P45s. Your Personal Tax Account at gov.uk shows employment history going back several years.
The Pension Tracing Service at gov.uk/find-pension-contact-details searches a database of over 200,000 pension schemes. Enter an employer's name — it tells you how to contact the scheme. It won't tell you the value, just who to ask.
Write to or call each provider. Ask for: current transfer value, pension type (defined contribution or defined benefit), any transfer penalties or exit fees, any protected benefits (guaranteed annuity rates, protected pension age), and fund performance.
Your current workplace pension — simplest option. Often low charges, employer may accept transfers in. SIPP — more investment choice, useful if you want to pick your own funds. Personal pension — less flexible but simpler. Compare charges carefully — a 0.5% difference on £50,000 compounds to tens of thousands over 30 years.
Contact your new provider (not the old one) and request a pension transfer. Provide: old provider name, policy reference, transfer value. They handle the process with your old scheme. Takes 4–6 weeks typically.
The full New State Pension is £221.20/week (£11,502/year) for 2024/25. You need 35 qualifying NI years for the full amount. Check your forecast and NI record at gov.uk/check-state-pension. Filling NI gaps via voluntary contributions is often excellent value — one year costs ~£824 and adds ~£303/year to your pension for life.