I owe 1225 tax that will come out of 24/25 PAYE what will my new tax code be ?

So i owe £1225 which i will pay back through my 24/25 paye tax code, is there a calculation to work out my new tax code, my personal allowance will change from £12570 to £11345 is that correct so my tax code will be 1134L not looking for a definate answer just a guesstamate to budget for next year. England based will earn Approx £52000.

Hi

The calculation of your tax code is based on a number of factors, including your wage and any underpayment amounts owed.
For specific advice, contact us by webchat or phone via Income Tax: general enquiries

Thank you