Pillar Guide · Updated May 2026

The UK Tax System Explained: Pillar Guide for 2025/26

The United Kingdom does not have one tax system — it has four overlapping ones, run by HMRC at the centre, three devolved revenue authorities at the edges, and 333 local councils on the doorstep. This pillar guide walks through every major tax that touches an adult in 2025/26: the eight headline charges, the thresholds that matter, how PAYE and Self Assessment actually fit together, and what is different in Scotland, Wales and Northern Ireland. Use it as a roadmap to the deeper guides on each topic.

Last updated: 24 May 2026Last reviewed: 24 May 2026How we verify

Four Nations, One Kingdom

Tax in the United Kingdom is partly reserved (set centrally by Westminster) and partly devolved. The split matters because your bill depends on where you live, not just what you earn. England, Scotland, Wales and Northern Ireland each have a slightly different configuration of taxes, with Scotland having gone the furthest in setting its own rates.

Income Tax is the most visibly devolved tax. Scotland operates a six-band system with its own rates, set annually by the Scottish Parliament. Wales has the legal power to vary the basic, higher and additional rates by up to 10p in the pound — but has so far chosen to keep them identical to England. Northern Ireland uses the rest-of-UK rates throughout. National Insurance, by contrast, is set UK-wide and identical everywhere.

Property transfer taxes are fully devolved: SDLT (England and NI) is collected by HMRC, LBTT (Scotland) by Revenue Scotland, and LTT (Wales) by the Welsh Revenue Authority. Each has its own bands, thresholds and surcharges for additional homes. Council Tax operates similarly in all four nations but with different valuation bands and ranges.

VAT, Corporation Tax, Capital Gains Tax, Inheritance Tax and Vehicle Excise Duty remain fully reserved at Westminster — so the rate you pay on a packet of biscuits, a company dividend, an estate or a car licence is identical regardless of which nation you live in.

Income Tax — The Big One

Income Tax is the largest single source of UK government revenue — roughly £270bn per year. It is charged on earnings from employment, self-employment, pensions, rent, savings interest above the allowance, and dividends above the £500 dividend allowance. The first £12,570 of income is tax-free for everyone via the Personal Allowance.

Band	Rest of UK	Scotland
Personal Allowance	£0 – £12,570 (0%)	£0 – £12,570 (0%)
Starter	—	£12,570 – £14,876 (19%)
Basic	£12,570 – £50,270 (20%)	£14,876 – £26,561 (20%)
Intermediate	—	£26,561 – £43,662 (21%)
Higher	£50,270 – £125,140 (40%)	£43,662 – £75,000 (42%)
Advanced	—	£75,000 – £125,140 (45%)
Additional / Top	Above £125,140 (45%)	Above £125,140 (48%)

The Personal Allowance is tapered for high earners: lose £1 of PA for every £2 of income above £100,000, fully eliminated at £125,140. That creates a brutal effective marginal rate of 60% between £100,000 and £125,140 in rUK (62% in Scotland counting NI) — one of the highest implicit rates in the developed world for a relatively middling income level.

Dividends are taxed separately at 8.75% (basic), 33.75% (higher) and 39.35% (additional) after a £500 dividend allowance. Savings interest has its own £1,000 (basic) / £500 (higher) Personal Savings Allowance, and from there is taxed at your marginal rate.

National Insurance — The Hidden 8%

National Insurance is technically a contribution toward state benefits (State Pension, Maternity Allowance, contribution-based JSA) but in practice it functions as a second income tax. For 2025/26 the employee Class 1 main rate is 8% on earnings between £12,570 and £50,270, and 2% above £50,270. Employers pay 15% on earnings above the £5,000 secondary threshold, raised from £9,100 in April 2025.

The self-employed pay Class 4 NI at 6% / 2% on the same profit thresholds. Compulsory Class 2 (£3.45/week) was abolished in April 2024, though it survives voluntarily for those wanting to fill State Pension qualifying years below the Small Profits Threshold of £6,725. Voluntary Class 3 (£17.75/week) is the fallback for those with no self-employment income.

NI is set UK-wide — there is no Scottish, Welsh or Northern Irish variant. Together Income Tax and NI account for over £450bn of annual revenue, more than half of all UK tax. The combined headline rate on basic-rate earnings (20% IT + 8% NI = 28%) is what most working-age adults actually face on their next pound of salary.

VAT — The Indirect Tax

Value Added Tax is the UK's largest indirect tax, raising around £170bn annually. The standard rate is 20%, applied to most goods and services. A reduced 5% rate covers domestic gas and electricity, children's car seats, mobility aids for the elderly and some energy-saving materials. Zero-rated supplies — food (with exceptions), children's clothes, books, newspapers, public transport and new-build housing — bear VAT technically but at 0%, which means producers can still reclaim input VAT.

Businesses must register for VAT once their taxable turnover crosses £90,000in a rolling 12-month period (raised from £85,000 in April 2024). Voluntary registration below the threshold is allowed and often beneficial for B2B businesses that can reclaim input VAT. The Flat Rate Scheme simplifies VAT for small businesses by applying a sector-specific percentage to gross turnover instead of tracking input/output VAT line by line.

VAT is a consumer tax in economic terms — businesses are merely collectors — but in cashflow terms it is a critical administrative burden for any business above £90k turnover. Quarterly returns under Making Tax Digital are now mandatory for all VAT-registered businesses.

Property Taxes: SDLT, LBTT and LTT

When you buy a residential property you pay a one-off transfer tax. England and Northern Ireland use Stamp Duty Land Tax (SDLT), Scotland uses Land and Buildings Transaction Tax (LBTT), and Wales uses Land Transaction Tax (LTT). All three are tiered, all three have an additional surcharge for second homes and buy-to-let, and all three offer first-time buyer relief — but the thresholds and rates differ.

In England and NI from April 2025, SDLT kicks in at £125,000 (down from a temporary £250,000 threshold), with first-time buyer relief up to £300,000. The additional property surcharge is 5 percentage points on top of standard rates. In Scotland, LBTT starts at £145,000 with a 6% Additional Dwelling Supplement. In Wales, LTT starts at £225,000 with a 5% higher-rate surcharge — Wales has no first-time buyer relief.

The structural differences make cross-border comparisons tricky. A £300,000 first home in England carries £0 SDLT for a first-time buyer, but £1,100 LBTT in Scotland and £3,750 LTT in Wales. Always check the calculator for your specific nation and buyer category before completing on a property.

Capital Gains Tax

CGT is charged on the profit you make when you sell or dispose of an asset that has gone up in value. The annual tax-free CGT allowance is just £3,000for 2025/26 — cut sharply from £12,300 in 2022/23. Rates depend on the asset type and your income tax band: shares and most assets are taxed at 18% (basic) or 24% (higher/additional) following the October 2024 Budget changes that aligned shares with residential property rates. Residential property other than your main home remains at 18%/24%. Business Asset Disposal Relief offers a 14% rate for 2025/26 (rising to 18% from April 2026) on the first £1m of qualifying business sale gains.

Your main home — your Principal Private Residence — is fully exempt from CGT, provided you have lived in it for the whole period of ownership. Assets transferred between spouses are exempt, allowing couples to combine two annual allowances and shift gains to the lower-rate partner before disposal.

Inheritance Tax

IHT is charged at 40% on the value of an estate above the £325,000 nil-rate band. An additional Residence Nil-Rate Band of up to £175,000 applies when a qualifying main home is left to direct descendants, lifting the combined threshold to £500,000 for an individual. Married couples and civil partners can transfer unused bands, taking a combined estate threshold to as much as £1 million entirely free of IHT.

The biggest reforms are coming. From April 2026, Agricultural Property Relief and Business Property Relief — currently 100% reliefs for qualifying farms and trading businesses — will cap the 100% rate at £1m, with 50% relief above that. From April 2027, unused pension funds will be brought within the estate for IHT, ending the pension's long-standing role as a tax-free inheritance vehicle.

The 7-year rule means gifts made more than seven years before death are usually outside the estate. Smaller annual gifts of up to £3,000 per year, plus £250 small gifts to any individual, plus gifts on marriage, are also exempt. Effective IHT planning often relies on early lifetime gifting and trust structures.

Corporation Tax

UK Corporation Tax is paid by limited companies on their taxable profits. The main rate is 25% on profits over £250,000, with a small-profits rate of 19% on profits up to £50,000 and a tapered marginal rate between those figures. The April 2023 jump from 19% to 25% was the biggest single Corporation Tax change in two decades and reshaped the salary-versus-dividend calculus for company directors.

Companies can deduct allowable business expenses, capital allowances (including Full Expensing of plant and machinery), R&D tax credits and a wide range of reliefs before arriving at taxable profit. The R&D regime was unified for accounting periods beginning on or after 1 April 2024, replacing the separate SME and RDEC schemes with a single merged credit and an enhanced rate for R&D-intensive SMEs.

Council Tax & Local Levies

Council Tax is the only major UK tax assessed on property value rather than income. Each residential property is placed in a band (A–H in England and Scotland, A–I in Wales) based on its 1991 valuation in England and Scotland or 2003 in Wales. Bills are then set annually by your local authority, with separate components for the council, police, fire authority and (in some areas) parish councils.

Average Band D bills for 2025/26 are roughly £2,280 in England, £1,500 in Scotland and £2,100 in Wales — but vary widely by council. Discounts of 25% apply for single-adult households, 100% for full-time student households, and various reductions for low income via local Council Tax Support schemes. Empty properties and second homes increasingly face premium surcharges of up to 300% under recent policy changes.

How PAYE Works

Pay As You Earn is the system that collects Income Tax and Class 1 National Insurance from employees in real time, every payday. The employer is the unpaid tax collector: they calculate the deductions using your tax code (typically 1257L for someone with a full standard Personal Allowance), withhold the right amount, and pay it to HMRC.

The tax code is the linchpin. 1257L means £12,570 of tax-free allowance spread evenly across the year. If you have benefits in kind (company car, private medical insurance) the code is reduced; if you have additional allowances (Marriage Allowance, professional subscriptions) the code rises. The letter suffix indicates Scotland (S prefix) or Wales (C prefix) for the relevant nation's rates.

Most employees never need to file a tax return — PAYE handles everything via real-time information (RTI) sent monthly by employers to HMRC. Where PAYE gets it wrong, HMRC issues a P800 reconciliation after year-end, refunding overpaid tax or asking for underpayments. This is why the majority of UK adults never engage directly with the Self Assessment system.

Self Assessment Basics

Self Assessment is the channel through which everyone outside the standard PAYE flow reports their income and pays their tax. About 12 million UK adults file an SA return each year — sole traders, landlords, company directors, high earners affected by the child benefit charge, and anyone with significant untaxed income.

The tax year runs 6 April to 5 April. After year-end you have until 31 October to file on paper or 31 January to file online — and pay the balancing tax. Two payments on account are due on 31 January and 31 July each year, each equal to half the previous year's liability, if you owe more than £1,000 in tax and PAYE covers less than 80%.

Making Tax Digital for Income Tax Self Assessment (MTD-ITSA) starts to bite in April 2026 for sole traders and landlords with combined gross income above £50,000, requiring quarterly updates plus a final declaration. Those with income above £30,000 join in April 2027, and £20,000 in April 2028.

HMRC and the Devolved Authorities

HM Revenue & Customs is a non-ministerial department of the UK government, formed in 2005 by merging the Inland Revenue and HM Customs and Excise. It administers Income Tax, NI, VAT, Corporation Tax, CGT, IHT, SDLT (England/NI), tax credits (legacy), Child Benefit and the National Minimum Wage. It employs around 65,000 people.

Three smaller devolved revenue authorities sit alongside HMRC. Revenue Scotlandadministers LBTT and Scottish Landfill Tax. The Welsh Revenue Authorityadministers LTT and Welsh Landfill Disposals Tax. Northern Irelandhas no devolved revenue authority — HMRC continues to administer all NI taxes including the equivalent of SDLT. Scottish Income Tax is set by Holyrood but still collected operationally by HMRC, which transfers the revenue to the Scottish Government.

The DVLA collects Vehicle Excise Duty. Local councils collect Council Tax and Business Rates. The Valuation Office Agency (England/Wales) and Scottish Assessors set the property valuations that underpin those local taxes.

How the UK Compares Internationally

The UK's overall tax take, around 36% of GDP, places it in the middle of the OECD league table — lower than France (around 46%), Italy (around 42%) and Germany (around 39%), broadly in line with Canada and the Netherlands, but higher than Australia, Switzerland and the United States.

Where the UK stands out is the structure rather than the level. National Insurance creates a 28% combined basic rate on earnings that does not appear in many international comparisons that look only at Income Tax. The Personal Allowance taper between £100k and £125,140 produces an effective marginal rate of 60-62% that is relatively unusual at that income level. VAT at 20% sits in the middle of European rates (Hungary 27% high, Switzerland 8.1% low) and well above US sales taxes which average about 7%.

Inheritance and wealth taxes are comparatively heavy in the UK at the top: a 40% IHT rate above £325k is higher than Germany (up to 30%) and the US federal estate tax (40% but with a $13.99m exemption per person). The 2026 and 2027 reforms to APR/BPR and pension IHT treatment will pull more middle-class estates into the net.

Where to Start: Deeper Guides

Use the table below to dive into any individual tax. Each linked guide goes deeper into bands, worked examples, common mistakes, and edge cases.

UK Income Tax Explained — bands, allowances, devolution detail
UK Class 4 NI Explained — the self-employed NI charge
CGT on Property Disposal — PPR, lettings relief, 60-day filing
IHT and the 7-Year Rule — taper relief, gifting strategies
UK Tax Codes Deep Dive — reading and fixing your code
UK Tax on Rental Income — Section 24, allowable expenses
MTD for ITSA Explained — the digital filing transition
UK Tax Residency (SRT) — the Statutory Residence Test

If you are confused about whether you need to do anything at all, the rule of thumb is: if 100% of your income is salary paid through PAYE and below £100,000, you almost certainly do not need to file a return and the system handles everything for you. Above that, or with any non-PAYE income, you need to engage with Self Assessment.

Official References

FAQs

Who actually collects tax in the UK?

Most direct taxes — Income Tax, National Insurance, Corporation Tax, Capital Gains Tax, Inheritance Tax and VAT — are collected centrally by HM Revenue & Customs (HMRC). Council Tax is collected by your local council. Stamp Duty equivalents are split: SDLT in England and Northern Ireland is collected by HMRC, LBTT in Scotland by Revenue Scotland, and LTT in Wales by the Welsh Revenue Authority. Vehicle Excise Duty is collected by the DVLA. So although HMRC is the dominant collector, three devolved tax authorities, every local council and the DVLA also raise revenue directly.

What is the Personal Allowance for 2025/26?

The standard UK Personal Allowance is £12,570 — the same in all four nations. It is frozen until at least April 2028. Anyone earning over £100,000 loses £1 of allowance for every £2 of income above that threshold, meaning the allowance is fully tapered to zero by £125,140. Scotland uses the same £12,570 PA but applies its own bands above it, including the unique Starter and Intermediate bands.

How does Scottish Income Tax differ from rest-of-UK?

Scotland has six bands instead of three: Starter (19%), Basic (20%), Intermediate (21%), Higher (42%), Advanced (45%) and Top (48%). The higher rate kicks in at £43,663 of taxable income (versus £50,270 in rUK), so middle earners on, say, £45,000 pay materially more in Scotland. National Insurance, however, is set UK-wide and is identical across the four nations.

Do Wales and Northern Ireland have their own Income Tax rates?

Wales has the legal power to vary Income Tax rates via the Welsh Rates of Income Tax, but since devolution it has always kept rates identical to England and Northern Ireland. Northern Ireland uses the same rates and bands as England and Wales — the Stormont assembly has not been granted Income Tax devolution. So in practice, three of the four nations share the same Income Tax rates, with Scotland being the only divergent one.

When do I need to file Self Assessment?

You must file a Self Assessment return if you were self-employed with profits over £1,000, earned over £10,000 from savings or dividends outside an ISA, had any untaxed income above £2,500, are a company director (in most cases), claim Child Benefit and earn over £60,000 (the High Income Child Benefit Charge), or have rental income. The paper deadline is 31 October; the online deadline is 31 January following the tax year end. Most taxpayers do not file — PAYE collects everything correctly.

How much VAT do I pay on a typical purchase?

The standard VAT rate is 20%, charged on most goods and services. A reduced rate of 5% applies to domestic energy, child car seats and some energy-saving materials. A zero rate covers most food, children's clothing, books and newspapers, and public transport. The VAT registration threshold for businesses is £90,000 of taxable turnover (raised from £85,000 in April 2024).

When does Inheritance Tax actually apply?

IHT is charged at 40% on the value of an estate above £325,000 (the nil-rate band). An additional Residence Nil-Rate Band of up to £175,000 applies when a main home passes to direct descendants, taking the combined threshold to £500,000 for an individual. Married couples and civil partners can transfer unused bands, giving up to £1 million tax-free between them. From April 2027, unused pension funds will also fall within the estate for IHT.

Is the UK a high-tax country compared with peers?

In international comparisons (OECD), the UK's total tax take is around 35-36% of GDP — higher than the US (around 28%) and Australia (around 30%), lower than France (around 46%) and Germany (around 39%). The UK's headline personal Income Tax rates (20/40/45%) are mid-range globally, while National Insurance adds a substantial extra layer that is less visible to international comparisons. Frozen thresholds — fiscal drag — are quietly increasing the effective burden each year.

What is the difference between Council Tax and Business Rates?

Council Tax is a residential property tax paid by households to their local authority, based on a 1991 valuation banded A-H (A-I in Wales). Business Rates are the commercial equivalent, paid by occupants of non-domestic property and based on the rateable value set by the Valuation Office Agency. Council Tax funds local services; Business Rates revenue is centrally redistributed in England, partly retained in Scotland and Wales.

Where should I start if I am completely new to UK tax?

Start with Income Tax and National Insurance — these touch every working adult through PAYE. If you are employed, learn how your tax code works and how to read a payslip. If you are self-employed, the Self Assessment process is the entry point. Then expand to VAT (relevant if you run a business), CGT (relevant if you sell investments or a second property), and IHT (relevant for estate planning). Council Tax applies to every household and is locally administered.

Calculate Your UK Tax

Income Tax

2025/26 bands and bills

NI Calculator

Class 1 employee + employer NI

Take-Home Pay

Net salary after tax & NI

Stamp Duty

SDLT / LBTT / LTT by nation

Calculators for this topic

Take-Home Pay Calculator

Calculate your net salary after income tax, National Insurance and student loan deductions.

National Insurance Calculator

Calculate your National Insurance contributions for 2025/26.

Self-Employed Tax Calculator

Calculate income tax, Class 2 and Class 4 National Insurance for self-employed and sole traders for 2025/26.

Dividend Tax Calculator

Calculate tax on dividends received from UK companies for 2025/26.

About the author

Emma Clarke

UK Tax Writer

Emma Clarke has been writing about UK personal tax since 2018, with a particular focus on Self Assessment, PAYE coding and the practical mechanics of how HMRC actually applies the rules to ordinary salaries. Her work concentrates on translating the dense language of HMRC manuals and Finance Act schedules into worked examples that show, pound by pound, how income tax and National Insurance reduce a gross salary to the figure that lands in a UK bank account. Emma covers the full PAYE lifecycle: tax codes (1257L, BR, K codes, emergency codes), the Marriage Allowance, the High Income Child Benefit Charge, salary sacrifice arrangements and their effect on pensionable pay, the Apprenticeship Levy, and the differences between the rUK and Scottish income-tax regimes. She is particularly interested in the edge cases that catch PAYE employees out — the £100,000 personal-allowance taper, the 60% effective marginal rate it creates, and the interaction between student-loan plans and pension contributions. Every figure in Emma's articles is verified against the current HMRC rates pages and worked through a Self Assessment calculation by hand before publication. She writes to CalcHub's editorial standards: primary-source citations, plain English, no promotional language, and clear "this is general information, not financial advice" disclaimers where appropriate.

Personal-finance writer since 2018
UK tax specialism — PAYE, Self Assessment, National Insurance
Writes to CalcHub editorial standards (primary-source citation, annual review)

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Disclaimer: Information is for guidance only and may not reflect your specific circumstances. Always refer to gov.uk or a qualified accountant for personal advice.