Hi,
From the figures you've given, it looks like you would be due to pay the £1141.20 quoted.
For every £2 you earn over £100,000, you lose £1 of your tax free allowances.
As you are £5688 over, your allowance will be reduced by around £2844.
With this reduction, £2844 of your income that was charged at 0% will be chargeable at 20%, and £2844 of your income that was charged at 20% will be charged at 40%.
This equates to around the £1141.20 requested.
If this amount is still not showing as present on your Personal Tax Account, or you require a more detailed explanation of your calcualtion, please contact us via:
Self Assessment: general enquiries
Thankyou.