Hi mpbrooker,
This forum is for general queries only and is intended to help you self-serve therefore we are unable to provide specific advice tailored to individual circumstances.
In the 2022/23 tax year the High Income Child Benefit Charge was applicable to anyone with an income over £50,000 in receipt of Child Benefit or with a partner in receipt of Child Benefit.
The amount payable will be equivalent to some or all of the Child Benefit recieved with the tax charge increasing gradually for taxpayers with incomes between £50,000 and £60,000 and will be dependant on the Adjusted Net Income calculation for the individual concerned.
You can use the tool here to get an estimate of the amount you may need to pay:
Child Benefit tax calculator
Thank you.