HM Revenue and Customs (HMRC) must receive your tax return and any money you owe by the deadline.
The last tax year started on 6 April 2016 and ended on 5 April 2017.
There’s an additional payment deadline of 31 July if you make advance payments towards your bill (known as ‘payments on account’).
You’ll usually pay a penalty if you’re late. You can appeal against a penalty if you have a reasonable excuse.
When the deadline is different
Submit your online return by 30 December if you want HMRC to automatically collect tax you owe from your wages and pension. You must be eligible.
HMRC must receive a paper tax return by 31 January if you’re a trustee of a registered pension scheme or a non-resident company. You can’t send a return online.
HMRC might also email or write to you giving you a different deadline.
Partnership returns if you have a company as a partner
If your partnership’s accounting date is between 1 February and 5 April and one of your partners is a limited company, the deadline for: ￼
- online returns is 12 months from the accounting date
- paper returns is 9 months from the accounting date
2015 to 2016 tax year and earlier
The Self Assessment deadline for these tax years has passed. Send your tax return or payment as soon as possible - you’ll have to pay a penalty.
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This calendar should help you establish what the 2014/15 key tax deadlines are. We know that tax is the bane of most peoples lives, but if you know exactly what lies in store, you can plan ahead to make things much easier.
Key Tax Dates for the UK: (Read Updated Article Here: Key Tax Dates 2015/16)
See updated version - UK Tax Year Dates 2015/16
6 April 2014 - First day of new tax year.
6 April 2015 - HMRC issue Self Assessment Returns and Notices to Complete a Return for tax year up to 5 April 2014.
6 April 2014 - If you are self-employed or have property income, you’ll need to start organising detailed records from this date to be able to do your tax return for the financial year 2014/15.
31 May 2014 - Copies of 2013/14 P60 are to be issued to employees.
6 July 2014 - Copies of 2013/14 P11d are to be issued to employees.
31 July 2014 – Deadline for second Self Assessment payment on account for tax year ended 5 April 2014.
- If 2013/14 is your first year completing a tax return this will not apply to you.
- If you have already done one tax return, you’ll be given an estimated amount to pay HMRC based on what you earned in the previous tax year. This payment goes towards your total tax owed for the year 2013/14. You will already have made your first payment on account for this tax year back in January.
5 October 2014 - Deadline to notify chargeability for Income Tax/ Capital Gains Tax for 2013/14 if not registered for Self Assessment. Complete form CWF1 for self-employment or form SA1 for non self-employed income.
31 October 2014 – Deadline for paper submission of self assessment tax returns for tax year ended 5 April 2014. If you want to submit a paper return, you need to have it in by this date otherwise you could be fined. However, if you miss this date you still have until January 31st to file it online.
1 November 2014 – Paper Returns submitted from now will attract a £100 penalty
30 December 2014 - Deadline for online submission of Self Assessment tax returns for tax year ended 5 April 2014 for HMRC to collect tax through clients’ PAYE codes, where they owe less than £3,000.
The average UK tax rebate is £963
31 January 2015 – Deadline for online submission of Self Assessment tax returns for tax year ended 5 April 2014
31 January 2015 – Deadline for paying Self Assessment ‘balancing payments’ for tax year ended 5 April 2014
31 January 2015 – Deadline for first Self Assessment payment on account for tax year ended 5 April 2015
1 February 2015 – £100 Fine imposed where HMRC requested Return for 2013/14 but not submitted. Interest starts to run on unpaid tax as at 31 January 2015.
5 April 2015 – Last day of tax year.
5 April 2014 – Deadline for claiming tax overpaid from 2010/11 tax year under PAYE.
5 April 2015 - Deadline for claiming tax overpaid from 2010/11 tax year under Self-assessment
Get your Guide to PAYE Taxes in the UK