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Reading tax bill

SEISS: Bills for overpaid grants hit taxpayers


HMRC is issuing assessments to taxpayers who have received more self-employed income support scheme (SEISS) grant than they were entitled to, and those bills must be paid or appealed within 30 days.

25th Apr 2022
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During the Covid-19 pandemic HMRC was under pressure to provide cash support to businesses, so the self-employed income support scheme (SEISS) was speedily devised and implemented. Although the grants paid out were based on tax-return data, there were opportunities for fraudsters to game the system, particularly for the fourth and fifth SEISS grants that were paid in 2021.    

Claim high then amend 

These final two SEISS grants were based on the taxpayer’s reported profits in their tax returns for 2016/17 to 2019/20, which HMRC held in its systems on 2 March 2021. 

A dishonest taxpayer could potentially inflate their SEISS grants by reporting higher profits in their 2019/20 tax return (due by 31 January but penalties we waived for those that filed by 28 February 2021), and then amend that tax return before 31 January 2022.

The taxpayer may have thought they could get away with massaging the figures on their 2019/20 tax return, as the tax due for that year could be partly deferred using the automated online system to apply for Time to Pay. However, if any of the tax returns for 2016/17 to 2019/20 were amended after 2 March 2021, either by the taxpayer or by HMRC, the amount of the fourth and fifth SEISS grants may also have to be adjusted.

HMRC may amend the tax return as a result of an enquiry or to correct an “obvious” error. Where the taxpayer has entered into a contract settlement with HMRC, a charge or revenue assessment has been raised, these are not considered to have modified the return, so don’t count as amendments.     

What HMRC checks  

HMRC has now had the time to examine the SEISS claims in detail and compare them to the taxpayer’s amended tax returns including the 2020/21 tax return, which will generally cover the relevant period for both the fourth and fifth SEISS grants. 

Remember that the tricky turnover test for the fifth SEISS grant required the taxpayer to state that their business turnover for 2020/21 was lower than that for a comparison year as reported on the 2019/20 tax return. If the turnover was actually higher in 2020/21 than the comparison year then the fifth SEISS grant would not be due, and would now have to be repaid.

As the fifth SEISS grant was paid at two levels (30% or 80% of average profits), HMRC is also checking that the grant was paid at the right level. 

Where the amount of the grant has to be adjusted downwards by £100 or more, due to a tax return amendment, the taxpayer should have voluntarily repaid the excess amount of the SEISS grant. 

Where the SEISS grant has been adjusted down by less than £100, no action is taken.   


If the taxpayer has not informed HMRC that they want to repay some or all of the grant, HMRC will collect the excess grant by way of a formal assessment.

HMRC sets out how that assessment is calculated in a letter to the taxpayer, which should be copied to the tax agent. 

As this letter and assessment relate to the tax return and not only to the SEISS grant, HMRC should communicate with the appointed tax agent on this issue. Only where the SEISS grant is sole subject of the query will HMRC refuse to talk to the tax agent without an additional authorisation letter.    

How to pay 

The taxpayer must either submit an appeal against the assessment, or pay the amount demanded within 30 days of the date on the HMRC letter.  

If the taxpayer can’t pay the full amount within that period, they should immediately apply for a Time to Pay arrangement by calling HMRC on 0300 322 9497. Tax agents can help with this, but the client has to talk directly to HMRC to give authority for the instalments under the Time to Pay agreement to be collected by direct debit. 

If the assessment is not paid within 30 days a 5% late payment supplement will be levied and interest will apply from 31 January 2023 on any amounts unpaid at that date.

Replies (9)

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the sea otter
By memyself-eye
26th Apr 2022 11:09

I wonder how many self employed will be indignant at having to pay this back as they will no doubt have spent it!

Thanks (2)
By Paul Crowley
26th Apr 2022 22:41

None yet for me
First three very difficult to challenge I would have thought
This year needs a little bit more logic checking on all claimants

Thanks (0)
By petestar1969
27th Apr 2022 10:13

One of my clients had to pay back all the grants, I put it on their SA return and they groused about it. How do HMRC know they asked me....

Client's business ceased trading 31 March 2019 but they managed to answer "yes" to the question "did you trade in the 2019/20 tax year?" when applying for the grant......

Thanks (2)
Replying to petestar1969:
By Cathy Milligan
27th Apr 2022 10:31

I had two of those too. Very indignant they were to be found out. Glad we agents were excluded from the application process (directly)

Thanks (2)
By AndrewV12
27th Apr 2022 12:23

MMMMM who is going to cop it, on another matter when will the letters go out for the £50,000 Bounce back loans, the SEISS are small beer compared to the Bounce back loans.

Thanks (2)
Replying to AndrewV12:
By AndrewV12
27th Apr 2022 16:29
Thanks (0)
By perpetual
27th Apr 2022 12:49

We have filed our first 2022 with clawback of grant 5, client was fine with it and accepts he should not have claimed it.
But HMRC have not coded the clawback into SA calculations yet. Return processed wrongly, overwrote our correct grant figure (what he was entitled to) with what he actually received.
Upshot they happy to take the grant back, but want the tax on it as well.
So say, they havent a clue and never seen this before. Well they will be seeing it a fair few times soon, so better getting their coding sorted out.

Thanks (1)
Replying to perpetual:
By [email protected]
03rd May 2022 12:53


Thanks (1)
By Ian McTernan CTA
27th Apr 2022 13:23

I wonder how many unrepresented self employed will have managed to follow all the rules without making any errors?

HMRC also seem to assume self employed will look back and check the figures and work out whether HMRC paid them too much....

Payment within 30 days is also harsh- but you can guarantee HMRC won't be adjusting the tax calculations for the reduction in reported income and we'll be left to sort out the resulting mess. Again.

Thanks (0)