I have a three year old and earn over £50,000 so I had to pay nearly £900 this year. I paid it as soon as it was assessed. I then received letters saying I fined £100 for the previous two tax years. I accept the fine for the year 2022 to 2023 but the year proper to that I was on mat leave and earned about £35K according to HMRC. I didn't need to do a tax return and shouldn't have to pay a fine.
I can't see how to challenge this online.
I can't see where the £900 I paid months ago went as it was applied to the £500 bill for last year and the two fines (which I had not agreed to pay)
I have paid this year's tax bill of £900 and just want to pay last year's tax bill and fine. I can't seem to find any of this on HMRC
Can someone please help?