UK Tax System Overview for Residents

The UK tax system layers several distinct taxes on the income, gains and transactions of a resident individual. Income tax and National Insurance fall on earnings; capital gains tax sits on disposals of assets; inheritance tax sits on estates; stamp duty land tax sits on property purchases; and a set of smaller taxes capture specific activities. Each operates under its own statute, its own thresholds and its own collection rhythm, but together they determine how much of a resident's earnings and wealth reaches household spending.

For tax year 2026/27, most personal thresholds remain frozen at the levels reached in 2021/22, the result of a multi-year fiscal drag policy confirmed across recent Budgets. The freeze of the Personal Allowance and higher-rate threshold means that pay rises, rental uplifts and dividend yields pull more taxpayers into higher bands without legislative changes to the rates themselves. This guide sets out the main pillars, the figures, the legislative anchors, and three worked examples at different income levels.

Residency, domicile and the scope of UK tax

UK tax residency is determined by the Statutory Residence Test (SRT) introduced in Finance Act 2013 and consolidated in Schedule 45. A person who meets one of the automatic UK tests, or scores enough ties under the sufficient-ties test combined with days in the UK, is treated as resident for the full tax year, subject to split-year treatment in defined arrival and departure scenarios.

A UK resident is generally taxed on worldwide income and gains. Non-residents are taxed only on UK-source income such as employment performed in the UK, UK property rental, and certain UK investment income, plus gains on UK land and property under the non-resident capital gains tax rules in TCGA 1992 as amended.

The remittance basis available to non-domiciled residents in earlier years was replaced from 6 April 2025 by a residence-based regime that removes the long-standing distinction between domicile and residence for income and gains. New arrivals who were non-resident for the prior ten tax years receive a transitional four-year exemption on foreign income and gains, after which worldwide taxation applies on the arising basis. Inheritance tax also moved to a long-term residence test on the same date, replacing domicile-based scope.

The practical effect for most settled residents is that all earnings, dividends, interest, rental income and capital gains - wherever they arise - must be reported on a UK tax return when above the relevant filing thresholds. Double taxation agreements may then reduce the UK charge where foreign tax has been paid on the same income.

Income tax: bands, allowances and the 2026/27 figures

Income tax is charged under the Income Tax Act 2007 and the Income Tax (Earnings and Pensions) Act 2003 for employment income. For 2026/27 the Personal Allowance is GBP 12,570, the basic rate band runs to GBP 50,270, the higher rate runs to GBP 125,140, and the additional rate of 45% applies above. These thresholds remain frozen until April 2028.

The Personal Allowance is reduced by GBP 1 for every GBP 2 of adjusted net income above GBP 100,000 and is fully extinguished at GBP 125,140. Between those two figures the effective marginal rate is 60% once the lost allowance is combined with the 40% higher rate, which is why pension contributions and Gift Aid donations are commonly used to keep adjusted net income below the taper threshold.

Worked example one: a salaried employee in England earning GBP 35,000 has a Personal Allowance of GBP 12,570 leaving GBP 22,430 taxed at 20%, an income tax liability of GBP 4,486 before NI. Worked example two: an employee on GBP 75,000 pays 20% on GBP 37,700 and 40% on the next GBP 24,730, an income tax bill of GBP 17,432. Worked example three: an employee on GBP 130,000 loses the full Personal Allowance, pays 20% on the next GBP 37,700, 40% on GBP 87,440, and 45% on GBP 4,860, an income tax liability of GBP 44,703.

Scotland operates separate bands under the Scotland Act 2016. For 2025/26 the rates run from a 19% starter rate, through 20%, 21%, 42%, 45% advanced rate and a 48% top rate above GBP 125,140. Welsh Rates of Income Tax operate within the UK structure but allow the Welsh Government to vary the main rates; the published rates have so far mirrored England and Northern Ireland.

National Insurance: classes, thresholds and pension entitlement

National Insurance is a separate charge from income tax but uses many of the same earnings figures. Employees pay Class 1 contributions at 8% between the Primary Threshold of GBP 12,570 and the Upper Earnings Limit of GBP 50,270, then 2% above, following the rate cuts implemented in January and April 2024 that took the main rate from 12% down to 8%.

Employers pay secondary Class 1 contributions at 13.8% above the Secondary Threshold of GBP 9,100, although the Employment Allowance of GBP 10,500 (raised from GBP 5,000 from April 2025) provides relief for many smaller employers. Self-employed individuals pay Class 4 at 6% between GBP 12,570 and GBP 50,270 and 2% above; Class 2 was abolished for compulsory contributions from 6 April 2024 while remaining available as voluntary contributions at GBP 3.45 a week.

NI contributions build State Pension entitlement under the new State Pension rules introduced from 6 April 2016. A full new State Pension typically requires 35 qualifying years, with a minimum of 10 years for any State Pension at all. Class 3 voluntary contributions can be used to fill gaps, with a normal six-year backdating window and an extended window for contributions covering 2006 to 2018 that runs to 5 April 2025 under transitional arrangements.

Edge case: an employee with two jobs may overpay NI if combined earnings push past the Upper Earnings Limit. Where Class 1 is paid in more than one employment and total earnings exceed the UEL, a refund can be claimed from HMRC using form CA5610 or by reviewing the annualised position after the tax year end.

Capital gains tax: rates and the 2024 alignment

Capital gains tax is charged on the disposal of chargeable assets under TCGA 1992. The annual exempt amount is GBP 3,000 for individuals in 2026/27, down from GBP 12,300 before the 2023/24 cut and GBP 6,000 in 2023/24. Gains within the exempt amount are not taxed and do not need to be reported provided proceeds were below the four-times-AEA reporting threshold.

From 30 October 2024 the main CGT rates were aligned for residential and non-residential gains at 18% for basic-rate taxpayers and 24% for higher and additional-rate taxpayers, removing the previous lower main rates of 10% and 20%. Business Asset Disposal Relief, which applies to qualifying disposals of trading businesses and certain shares, rose to 14% from 6 April 2025 and to 18% from 6 April 2026 under transitional rules confirmed in the Autumn 2024 Budget. The lifetime limit for BADR is GBP 1 million.

Worked example: a higher-rate taxpayer sells a second home for GBP 280,000 in June 2026 with a base cost of GBP 220,000 and GBP 5,000 of allowable costs. The gain is GBP 55,000; after the GBP 3,000 annual exempt amount the taxable gain is GBP 52,000 at 24%, a CGT liability of GBP 12,480. The disposal must be reported via the online CGT on UK property return within 60 days of completion, with the tax paid by the same deadline.

Spousal transfers between spouses or civil partners living together are no-gain, no-loss transactions under section 58 TCGA 1992, which allows couples to use both annual exempt amounts and shift gains to the lower-rate spouse. Cryptoassets, listed shares, unit trusts and second homes are the most common chargeable assets for typical UK residents; the main home is generally exempt under Private Residence Relief in sections 222 to 226 TCGA 1992.

Savings and dividend income: how the allowances stack

Savings interest and dividends are taxed under separate regimes with their own allowances. The Personal Savings Allowance gives GBP 1,000 of tax-free savings interest to basic-rate taxpayers, GBP 500 to higher-rate taxpayers, and nil to additional-rate taxpayers. The starting rate for savings adds a further GBP 5,000 band taxed at 0%, but this is reduced GBP 1 for every GBP 1 of non-savings non-dividend income above the Personal Allowance, so it only benefits taxpayers with low earnings and significant interest.

The dividend allowance is GBP 500 for 2026/27, reduced from GBP 1,000 in 2023/24. Dividend tax rates above the allowance are 8.75% at basic rate, 33.75% at higher rate, and 39.35% at additional rate. Dividends sit on top of other income for band purposes, so the rate that applies depends on total taxable income after the Personal Allowance.

Worked example: a basic-rate taxpayer with GBP 30,000 of salary, GBP 1,500 of bank interest and GBP 2,000 of dividends pays no tax on the first GBP 1,000 of interest (PSA), 20% on the remaining GBP 500 of interest (GBP 100), and 8.75% on GBP 1,500 of dividends above the GBP 500 allowance (GBP 131.25). Total tax on investment income is GBP 231.25.

ISAs sit outside this framework. Interest, dividends and gains within an Individual Savings Account are exempt from income tax and capital gains tax, and do not need to be reported on a tax return. The ISA allowance is GBP 20,000 for 2026/27 across cash, stocks and shares, innovative finance and lifetime ISAs combined, with the GBP 4,000 lifetime ISA limit nested inside.

Self-Assessment: who must file and key deadlines

HMRC requires a Self-Assessment tax return from individuals who fall into one of the categories listed under section 7 of the Taxes Management Act 1970 and HMRC's guidance: self-employed sole traders with turnover above GBP 1,000, partners in partnerships, company directors not paid solely through PAYE, individuals with untaxed income above GBP 2,500, those liable to the High Income Child Benefit Charge where income exceeds GBP 60,000, and anyone with capital gains above the annual exempt amount or chargeable proceeds above the reporting threshold.

The online filing deadline is 31 January following the tax year end. The paper deadline is 31 October. Payments on account for self-employed taxpayers are due on 31 January and 31 July at 50% each of the prior year's bill. A balancing payment is due on 31 January with the next year's first payment on account.

Penalties under Schedule 55 Finance Act 2009 start at GBP 100 for a missed online deadline regardless of the tax due. After three months daily penalties of GBP 10 a day apply for up to 90 days, then tax-geared penalties of 5% or GBP 300 (whichever is greater) at six months and again at twelve months. Interest under section 101 Finance Act 2009 runs at the official HMRC rate from the due date.

Edge case: registration for Self-Assessment for the first time has a separate deadline of 5 October following the tax year of first self-employment or new source of untaxed income. A taxpayer who becomes self-employed in August 2026 must register by 5 October 2027 and file their first return by 31 January 2028 for the 2026/27 year.

Inheritance tax and stamp duty: the property-linked charges

Inheritance tax is charged at 40% on the value of an estate above the nil-rate band, set at GBP 325,000 and frozen until April 2030 following the extension confirmed in the 2024 Autumn Budget. The residence nil-rate band adds up to GBP 175,000 where a qualifying main residence passes to direct descendants, giving a maximum GBP 500,000 for an individual or GBP 1 million for a married couple or civil partnership using the transferable nil-rate band.

The residence nil-rate band tapers by GBP 1 for every GBP 2 of estate value above GBP 2 million, so larger estates lose part or all of the housing-linked allowance. Lifetime gifts are potentially exempt transfers and fall outside the estate after seven years from the date of the gift, subject to the seven-year rule in section 3A of the Inheritance Tax Act 1984.

Stamp Duty Land Tax applies to property purchases in England and Northern Ireland with rates running from 0% on the first GBP 125,000 (after the 1 April 2025 threshold reset), 2% on GBP 125,001 to GBP 250,000, 5% on GBP 250,001 to GBP 925,000, 10% on GBP 925,001 to GBP 1.5 million, and 12% above. Scotland uses Land and Buildings Transaction Tax under Revenue Scotland; Wales uses Land Transaction Tax under the Welsh Revenue Authority. Additional dwelling surcharges apply to second homes at 5% in England from 31 October 2024 and at higher rates in Scotland and Wales.

Practical action: first-time buyers in England pay no SDLT on the first GBP 300,000 for purchases up to GBP 500,000 under the first-time buyer relief retained from earlier reforms. The relief is claimed on the SDLT return submitted by the conveyancer within 14 days of completion.

Personal Tax Account and how to interact with HMRC

HMRC's Personal Tax Account at gov.uk/personal-tax-account is the central digital service for residents to view tax codes, check NI records, claim refunds, update employer or pension details, file Marriage Allowance applications and view State Pension forecasts. Access is through the Government Gateway with two-step verification or the GOV.UK One Login that is being rolled out across services.

For salaried taxpayers with no other complications, the PAYE system collects income tax through payroll using the tax code supplied by HMRC. An incorrect tax code is the most common cause of under or over-payment; the PTA shows the code in use and a breakdown of the allowances and deductions making it up.

Self-Assessment taxpayers use a separate HMRC online services login that links to the same identity but operates a different interface. Filing is through the SA online return, with sections added or removed depending on declared sources of income. The HMRC app provides simplified access to tax codes, NI records, and payment options on mobile.

Common HMRC flags that prompt correspondence include unexplained untaxed income picked up through third-party reports, missing payments on account, sudden drops in declared self-employment income, large CGT disposals reported late, and discrepancies between P60 totals and SA returns. Most are resolved through a compliance check letter; persistent issues escalate to a formal enquiry under section 9A of the Taxes Management Act 1970.

Frequently asked questions

Is the UK Personal Allowance still GBP 12,570 in 2026/27?

Yes. The Personal Allowance has been frozen at GBP 12,570 since 2021/22 and the freeze runs to April 2028 under the policy reaffirmed in successive Budgets. The higher-rate threshold at GBP 50,270 is frozen on the same timetable. The effect is fiscal drag: nominal pay rises pull more taxpayers into the higher band without rate changes, which is why salary, dividend and rental decisions need to be modelled against the frozen thresholds rather than assumed to uplift with inflation.

How does Scotland's income tax differ for residents?

Scotland operates six bands set by the Scottish Parliament under the Scotland Act 2016. For 2025/26 they were a 19% starter rate, 20% basic, 21% intermediate, 42% higher, 45% advanced and 48% top rate. Scottish income tax applies to non-savings non-dividend income; savings and dividend income remain on the UK rates. A resident with a main home in Scotland for most of the year typically has Scottish taxpayer status and a tax code with an S prefix from HMRC. Confirmation comes from HMRC after a P85 or self-assessment declaration.

When must a UK resident file a Self-Assessment return?

Filing is required where a taxpayer falls into the categories in HMRC's Who Must Send a Tax Return guidance, including self-employed turnover above GBP 1,000, untaxed income above GBP 2,500, capital gains above the annual exempt amount, dividends above GBP 10,000, High Income Child Benefit Charge liability where income tops GBP 60,000, and any year in which HMRC has issued a notice to file. Returns must be filed online by 31 January following the tax year end. Registration for first-time filers is by 5 October after the relevant tax year.

How is capital gains tax reported after the 60-day rule?

Residential property disposals by UK residents require a CGT on UK property return filed within 60 days of completion under Schedule 2 Finance Act 2019, with the tax paid by the same deadline. Other gains, such as on listed shares or cryptoassets, are reported through the annual Self-Assessment return by 31 January following the tax year end. The 60-day return uses an HMRC online account separate from the main Self-Assessment, and the tax paid is credited against the year-end calculation when the full return is filed.

What happens if Self-Assessment is filed late?

Under Schedule 55 Finance Act 2009 a fixed GBP 100 penalty applies as soon as the deadline passes, regardless of whether tax is owed. After three months daily GBP 10 penalties accrue for up to 90 days, then tax-geared penalties of 5% or GBP 300 at six months and again at twelve months. Interest accrues on unpaid tax from the original due date. A reasonable excuse appeal under section 102 of the Taxes Management Act 1970 can remove penalties where HMRC accepts the circumstances, with the bar being relatively narrow.

Do UK residents pay tax on foreign income from 6 April 2025?

Generally yes. From 6 April 2025 the long-standing remittance basis was replaced by a residence-based regime. UK residents are taxable on worldwide income and gains on the arising basis. A four-year exemption applies to new arrivals who have been non-resident for the previous ten years, after which the full residence basis applies. Double taxation agreements continue to provide credit for foreign tax paid on the same income, and the foreign income reporting threshold for individuals with very small amounts remains in HMRC's guidance for declaring on Self-Assessment.