Do you need to file Self Assessment in the UK?

Who has to file

PAYE collects tax on your salary, so many employees never file a return. You normally must register and file if, in the tax year, you:

• were UK tax resident and had foreign income on which UK tax is due, such as Indian rent, interest on NRO or NRE accounts and fixed deposits, dividends, or a pension;
• made taxable capital gains, for example selling Indian shares, mutual funds or property above the annual exempt amount (£3,000), or had to report a disposal;
• had UK untaxed income above £2,500 (or self-employment or UK rental income above the £1,000 trading or property allowance);
• want to claim the 4-year FIG regime (see below), foreign tax credit relief or higher-rate pension relief;
• are liable to the High Income Child Benefit Charge and have not chosen to pay it through PAYE.

Being UK tax resident is decided by the Statutory Residence Test (SRT), not your visa. Most people who move here to work full-time are resident from their first tax year. In the year you arrive, split-year treatment often means your Indian salary from before arrival is not taxed in the UK, but you may still need a return to claim it. HMRC's online 'Check if you need to send a Self Assessment tax return' tool gives a quick answer.

The end of the remittance basis and the 4-year FIG regime

Until April 2025, many Indians could claim the remittance basis and pay UK tax on Indian income only if they brought it to the UK. That was abolished from 6 April 2025.

It was replaced by the 4-year foreign income and gains (FIG) regime:

• it is available only if you were not UK resident for at least 10 consecutive tax years before becoming resident. Most first-time arrivals from India qualify;
• it lasts for your first 4 tax years of UK residence. If you arrived before April 2025, you can use the remaining years of your first four;
• you claim it each year on your Self Assessment return. Qualifying foreign income and gains are then not taxed in the UK, even if you bring the money here;
• the cost of claiming: you lose your personal allowance (£12,570) and the CGT annual exempt amount (£3,000) for that year.

For a typical employee with a small amount of Indian interest, losing £12,570 of personal allowance costs far more (£2,514 at 20%) than the tax saved, so claiming does not pay. It can make sense if you have large Indian rental income, gains or investment income. Run the numbers or get advice before claiming.

Indian income and the UK–India tax treaty

Under the UK–India double taxation agreement, India usually keeps the right to tax income arising there, such as rent from Indian property and interest from Indian banks. The UK, as your country of residence, taxes it too, but gives you foreign tax credit relief for Indian tax paid, up to the UK tax due on that income.

Report foreign income on the SA106 foreign pages in pounds, using HMRC's published exchange rates or the actual rate on the day, consistently. Remember the different tax years: Indian 1 April–31 March figures must be re-cut to 6 April–5 April. You may still need to file an Indian ITR too, for example to claim back excess TDS.

Deadlines for the 2025/26 tax year

• 5 October 2026: deadline to register if you have never filed. If you missed it, register now. A penalty for failing to notify is usually avoided if you file and pay all the tax by 31 January 2027.
• 31 October 2026: paper return deadline.
• 30 December 2026: file online by this date if you owe less than £3,000 and want it collected through your 2027/28 tax code instead of paying in one lump.
• 31 January 2027: online return deadline, payment of the 2025/26 balance, and the first payment on account for 2026/27 if one applies.
• 31 July 2027: second payment on account.

Payments on account apply when your Self Assessment bill is over £1,000 and less than 80% of your tax was collected at source. Each payment is half of last year's bill, paid in advance. Many people with significant Indian rent are surprised by this in their second year.

Penalties, interest and HICBC

Late filing: £100 immediately, even if you owe nothing. After 3 months, £10 a day for up to 90 days (£900). At 6 months and again at 12 months, the greater of 5% of the tax due or £300.

Late payment: 5% of the unpaid tax at 30 days, 6 months and 12 months, plus interest. HMRC's late-payment interest rate is the Bank of England base rate plus 4 percentage points.

High Income Child Benefit Charge: if you or your partner get Child Benefit and the higher earner's adjusted net income is over £60,000, the higher earner pays back 1% of the benefit for every £200 over, so it is all repaid at £80,000. Employees with no other reason to file can now use HMRC's online service to pay HICBC through their PAYE tax code instead of Self Assessment. If you file anyway for Indian income, include it on the return. Check Child Benefit eligibility for your visa first. It is a public fund for most visa holders, and claiming it on a 'no recourse to public funds' visa can cause immigration problems.

Common mistakes

• Assuming NRE interest is tax-free in the UK. It is tax-free only in India.
• Claiming the FIG regime by reflex. You lose your personal allowance for that year.
• Forgetting the year of arrival. Check whether split-year treatment applies and claim it on the residence pages (SA109).
• Using Indian financial-year figures without re-cutting them to the UK tax year.
• Not keeping Form 16A, AIS/26AS, TDS certificates and bank statements. HMRC can ask for evidence of Indian tax paid.
• Missing 31 January because the government gateway login or UTR took weeks to arrive. Register early.
• Ignoring Indian capital gains on mutual fund switches. Each switch is a disposal.

Step by step

1. Check whether you must fileUse HMRC's online checker and list all Indian and UK income for the tax year (6 April – 5 April).
2. Confirm residence statusApply the Statutory Residence Test, and check split-year treatment for your year of arrival.
3. Register for Self AssessmentRegister on GOV.UK to get your Unique Taxpayer Reference (UTR) and sign-in details. Allow several weeks.
4. Gather Indian documentsCollect interest certificates, rent records, TDS certificates, AIS/26AS and capital gains statements, and convert to GBP.
5. Decide on the FIG regimeCompare tax with and without a FIG claim, remembering you lose the £12,570 personal allowance if you claim.
6. Complete the return onlineFill in the main return plus SA106 foreign pages and SA109 residence pages if needed, and claim foreign tax credit relief.
7. File and pay by 31 JanuarySubmit online by 31 January 2027 and pay the balance plus any first payment on account.

Questions people ask

Official sources

• GOV.UK: Check if you can claim the 4-year FIG regime
• GOV.UK: Tax on foreign income
• GOV.UK: Self Assessment tax returns: deadlines
• GOV.UK: Self Assessment penalties
• GOV.UK: HS266 Foreign income and gains (FIG) regime 2026
• GOV.UK: High Income Child Benefit Charge
• GOV.UK: India tax treaties

Checked against these sources on 14 October 2026. Rules and fees change; confirm with the authority before you apply.