Self Assessment amount due vs Paid

Hi, This is the first time I have completed a self assessment which I am now doing only because I am earning over £50k and have claimed Child Benefit so I need to pay about half of it back. It is for the period 6 April 2022 to 5 April 2023 After doing my self assessment the final screen is telling me the amount due is more than I thought! It's about £2250. I was expecting it to just be the amount of Child Benefit I had over claimed which is about £400. I've checked everything, e.g. medical, professional fees I pay to a professional body etc.. I wondered, does the amount due shown on the self assessment take into account the amount of tax I have paid (circa £11k) shown on the statement of account for that period? So once I submit it will it somehow recalibrate? Thank you, 

Hi,

We can check to make sure that you've included all of the correct information in your return, and explain any unexpected amounts in the calculation to you.

Just contact us via link below and we can review your record.

Self Assessment: general enquiries

Thank you.