Higher rate Pension Tax relief question

Dazed_and_C0nfused

I'd imagine there will be a change in the section askiing for overpaid/underpaid tax from previous years, in the current year's tax retun after I make the amendment?

No, each tax year will be dealt with independently.  The only time it could have that impact is if tax you owed under Self Assessment was included in your 2021:22 or 2022:23 tax codes. 

As you have filed incorrect returns you will have to make a claim for overpayment relief for those now out of date for amendment - as per purdyoaten2's link.

You can amend 2019:20 upto 31 January 2022 and obviously file a correct return (or amend it) for 2020:21.

All the adjustments made will eventually feed through to your Self Assessment statement of account.

3Dwarves

Dazed_and_C0nfused said:

I'd imagine there will be a change in the section askiing for overpaid/underpaid tax from previous years, in the current year's tax retun after I make the amendment?

The only time it could have that impact is if tax you owed under Self Assessment was included in your 2021:22 or 2022:23 tax codes. 

That is exactly the case for 2019/20 - I have tax owed included in the 2020/21 tax code. I'll first amend the 2019/20 tax return and wait a few days to see if there will be any change in the tax code and then file the 2020/21 tax return. 

Dazed_and_C0nfused

That is quite unusual.

Tax owed under Self Assessment for 2019:20 is usually collected via the 2021:22 tax code (the return would have been filed during 2020:21)