I am currently submitting my self assessment return to pay the high income child benefit charge. I am paid by my employer via PAYE.
I currently also receive uniform tax relief of £60 a year and my personal allowance is £12630 but when it comes to my tax calculation for last year it has my personal allowance of £12570, so even though I paid the correct amount of tax last year through PAYE it is now calculating that I need to pay this back. There doesn't seem to be an option to add this on the online self assessment form.
How can I change my personal allowance on the calculation to reflect my personal allowance of £12630 ?