What to do when tax relief on SIPP contribution arrives in following tax year?

Dear HMRC If I made a SIPP contribution in tax year 2022/23, but the tax relief payment only reached my SIPP account in the following tax year (2023/24), what do I put as pension contributions on my SA for year 2022/23? My contribution alone, or my contribution x 1.25? e.g. if I contributed £8,000 on 1/4/23, and tax relief payment appeared in my account on 1/6/23, do I put: A) Put £8,000 in my 22/23 return, and add the £2,000 tax relief to my 23/24 return next year, or B) Put £10,000 in my 22/23 return. Thank you!

Hi Phillip Homer,
The deemed date of payment depends on the method used to make the contribution.
Plesae see guidance here:
PTM041000 - Contributions: essential principles
Thank you. 

Ok thank you, after reading that I don't see how it is relevant to my question. I am not asking about MY contribution (to which the question of whether it was made by cheque, card, or DD would be relevant) - I am asking about the 25% tax relief that is automatically added to my account (to which asking how the payment doesn't make sense). Can you please clarify further?

Hi Philip
It is the date the provider received the payment, not the date you made it that is important.  The date the provider receive the payment will determine whether is should be claimed in 22/23 or 23/34.  You would need to check with the SIPP provider for the date they received the payment. 
Thank you.
 

Dear HRMC. I believe the advice you gave above is inaccurate. Please see here the response from my pension provider which makes much more sense: "The tax relief that is received and applied to your account is always going to count towards the year in which the original contribution is made. We treat this as a gross contribution. You can confirm this by going into your documents and generating a "Pension Contribution Statement" using the report generator as we report this to HMRC as a gross contribution which includes the corresponding tax relief. That means if you made a contribution on 01.04.23, even though the tax relief is applied around 6 - 11 weeks later, it is reported as a contribution made on 01.04.23 and counts to that tax year rather than the next." I'm posting this here in case others have the same question. Thank you 

Hi

The deemed date for payments is outlined at Deemed date of contributions

Thank you

Philip, did you reach a conclsion on this? Similarly seeing different advice in different places

I went with the advice given by my pension provider which I pasted above. Pretty sure the Admin responses here didn't understand my question.

@ Phillip Horner. Firstly congratulations on remaining civil against what appears to be a confederacy of lazy dunces - your question could not have been more simple. I have just received the opposite advice over the phone, although they had to check (as did the operator before but they put the phone down before coming back to me). I have also seen a forum answered by HMRC, all be it a year ago, which confirms what you thought and have been advised by your pension provider - it's the answer that seems to make the most sense. I have asked this again on the HMRC forum and, assuming I get the same answer, will print off the forum responses from HMRC to cover my backside should someone at a later date suggest otherwise.