Benefit in Kind claw back - tax impact

Hi, Please, I would to understand if the claw back of a Benefit in Kind impacts my tax code / tax allowance, per case below. In the beginning of 2023 my current employer paid for immigration support (ILR Visa and consultancy) in a total of £6500.00. This has been reported on my 2022-2023 P11D, which caused on a reduction of my tax free allowance and from August 2023 until March 2023 I have paid around £200.00 extra taxes because of this benefit in kind (around £2500.00 extra income tax paid). I found a new job with another company and per contract with my current employer, I have to pay back the immigration support (same £6500.00), hence my current employer is deducting approximately £2166.67 (after taxes) from my pays of April, May and now June. My point/question is: if you add up all payments I'm doing (£2500 in extra taxes + £6500 claw back), I'm paying £9000 for something that should have costed £6500 (because I'm having to pay back). So, should my tax free allowance increase in £6500? Should my tax code be updated? (that would mean I would pay £2500 less income tax during the next months) Thank you in advance.

Hi 

You will need to contact HMRC to access and review your record in this case.
You can contact HMRC at Income Tax: general enquiries

Thanks