Compliance

"What are the key UK and India tax dates I need to remember?"

18 October 2026

5 min read

By Suyesh Sharma

"I always find out about a deadline after it has passed." With two tax years running side by side, it is easy to do. This post puts the main UK and Indian dates in one place, so you can plan around both.

Section 1

The two tax years

🇬🇧

6 April to 5 April

The UK tax year starts on 6 April and ends on 5 April the following year.

🇮🇳

India

1 April to 31 March

India's financial year starts on 1 April and ends on 31 March the following year.

Section 2

Main UK dates (Self Assessment)

5 October: deadline to tell HMRC you need to file a return, if you have not filed one before.
31 October: deadline for paper returns.
31 January: deadline for online returns, and for paying any tax owed. The first payment on account is also due then.
31 July: the second payment on account is due.
Within 60 days of completion: reporting and paying tax on a sale of UK residential property, where this applies.

⚠ Do not miss 31 January. Missing the filing deadline brings an automatic penalty, and it can be avoided by filing on time.

Section 3

Main Indian dates (typical)

15 June, 15 September, 15 December and 15 March: the usual advance tax instalment dates, where advance tax applies.
31 July: the usual deadline for filing an individual return, for those whose accounts do not need to be audited.
31 December: the usual last date for a late or revised return.

Indian due dates can change. They are sometimes extended or amended, so always confirm the current dates with Metta Accountants India before relying on them.

Section 4

Putting it together

The two calendars overlap. For example, Indian tax paid in a given financial year has to be matched against a UK tax year that starts and ends on different dates. Planning the order of filings, so that Indian figures are ready in time for the UK return, avoids late claims for relief.

Not sure where you stand?

Book a free UK-India tax call and we will help you line up both calendars.

Metta Accountants - UK Tax Specialists · Harrow, London

Disclaimer: This article is for general information purposes only and does not constitute personal tax advice. All information is based on UK tax law and HMRC guidance as at October 2026. Individual circumstances vary and you should seek professional advice before taking any action. Metta Accountants Limited is regulated by ACCA (company no. 12229608).

FAQs

Frequently Asked Questions

When is the UK Self Assessment deadline?

Normally 31 January after the end of the tax year, for online returns and for paying the tax due.

Do I need to file in both countries?

It depends on your residence and where your income arises. Many people with income in both countries do need to file in both.

What if I have missed a deadline?

Act promptly. Late returns can usually still be filed, and an early approach to HMRC generally leaves you in a better position.

Do the dates change from year to year?

UK dates are stable. Indian dates are sometimes extended, so check each year.

Suyesh Sharma

Founder & FCCA

Helping high earners and business owners keep more of what they earn through strategic planning.