What are the time limits for claiming a tax refund? How far can HMRC go back and raise an assessment? How many years back can a taxpayer appeal? What are the time limits for correcting a tax return?

This is a freeview 'At a glance' guide to time limits for tax assessments, claims and refunds.

At a glance

What are the time limits for tax claims and assessments?

There are many different time limits. The limit set depends on whether it is a claim or an assessment.

The basic rules are:

Claims for Income Tax and Capital Gains Tax (CGT)

When a claim is required to be made within a tax return, you must make the claim by 31 January following the end of the year of assessment. You are then allowed a further 12 months from the filing deadline to amend the return.

Time limits for specific claims vary, for example (it is advised to double-check each relief):

Refunds and Discovery Assessments

 

Normal time limit (a)(years)

Careless behaviour (b) (failure to take reasonable care)

(years)

Deliberate behaviour, Failure to notify (c)

(years)

Capital Gains Tax

4

6

20

Corporation Tax

4

6

20

Income Tax

4

6

20

PAYE

4

6

20

VAT

4

4

20

When can HMRC use the extended time limits?

For b) and c) detailed conditions have to be met.

The 20 year time limit can also apply for:

Extended time limits: offshore offences

Repayment claims: PAYE

The following tables show the deadlines for taxpayers under  PAYE.

Self Assessment taxpayers  

 

Tax year you want to claim tax back

Deadline for claims

SA taxpayers

PAYE & other taxpayers

2007-08

5 April 2012

2008-09 

5 April 2013
2009-10 5 April 2014
2010-11 5 April 2015
2011-12  5 April 2016
2012-13 5 April 2017
2013-14 5 April 2018
2014-15 5 April 2019
2015-16 5 April 2020
2016-17 5 April 2021
2017-18 5 April 2022
2018-19 5 April 2023
2019-20 5 April 2024
2020-21 5 April 2025
2021-22 5 April 2026
2022-23 5 April 2027
2023-24 5 April 2028
2024-25 5 April 2029
2025-26 5 April 2030

PAYE refunds 

From 31 May 2024, HMRC will no longer automatically issue repayments by cheque to employees who receive a tax calculation letter. Instead, employees will need to claim their repayments here.  

Instructions on how to claim will be included on the tax calculation letter. This will include alternative options for customers who cannot claim their repayment online. 

PAYE refunds out of time: Extra-statutory Concession B41

HMRC has the discretion to make repayments out of time under ESC B41:

‘...repayments of tax will be made in respect of claims made outside the statutory time limit where an overpayment of tax has arisen because of an error by the Inland Revenue [now HMRC] or another Government Department, and where there is no dispute or doubt as to the facts.’ 

Corporation Tax

Time limits are set according to accounting periods, see HMRC Corporation Tax time limits.

Error or mistake relief

Overpayment Relief and repayment claims are limited to four years. A special relief exists (see below) which can provide relief in cases where the taxpayer is out of time for appeal.

The above time limits do not affect:

The normal time limit for most assessments and determinations is four years from the end of the relevant tax period, there are however many variations from this norm according to HMRC. 

Special relief: out-of-time appeals against determinations and penalties

A special statutory relief exists in cases where it would be unconscionable for HMRC to seek to recover an amount of tax or refuse repayment (if already paid). This relief only applies where HMRC has made a determination of tax due and provided certain defined circumstances are met, see Special Relief.

Completion of unconditional contracts (CGT and Corporation Tax)

From 1 April 2023:

Useful guides on this topic

Discovery Assessments
When can HMRC issue an assessment outside of the normal statutory time limits? What conditions must be met? What are your rights of appeal and defences?

Overpayment relief
What is Overpayment relief? When can you claim Overpayment relief? What are the conditions for a claim for Overpayment relief? What are the time limits for a claim for Overpayment relief?

Special relief
What is Special Relief? When does it apply?