Frustrated25

Hi Clive. Thanks for your incredibly helpful response. My return is now correct?

I'm in the process of completing my self assessment in respect of the child benefit tax only and the calculation for tax is more than the child benefit paid. The issue seems to be that the personal allowance used in HMRCs calculation is lower than my actual tax code. My tax code is 1288L (reflecting the working from home allowance) but the standard allowance of 1257 has been used. How can I correct for this in my tax return?