@GoSimpleTax: How do I reduce my payments on account?

If you know your tax bill is going to be lower than last year, you can ask HM Revenue and Customs (HMRC) to reduce your payments on account

Click on SAVE & CONTINUE/VALIDATE MY TAX RETURN

Click on YES to proceed

On the ALMOST THERE page, answer YES to the question Are you claiming to reduce your 2021-2022 payments on account? Then enter the AMOUNT and the REASON

NOTE: If you underpay, you’ll be charged interest.

@GoSimpleTax: How do I submit my Self Assessment?
@GoSimpleTax: What are payments on account? And why do I have to pay them? Can I reduce my payments?
@GoSimpleTax: How do I register for Self Assessment? How do I get a UTR?
@GoSimpleTax: How do I make foreign currency entries on my tax return? How do I convert foreign currency to GBP?
@GoSimpleTax: How do I make a claim for Marriage Allowance Transfer (MAT)?