Why does my 2022/2023 Tax Calculation not include tax free amount

I am trying to complete my 2022/2023 tax return. I have a tax code of 2590T. When I view my tax calculation online as part of the process of completing my self assessment, this tax free amount does not show on the calculation. Can anyone advise if this is correct or should the amount not be taken off the overall tax calculation.

Hi,

If you are unsure what allowance has been given to generate this tax code, you will need to query this with our Income Tax department

Income Tax: general enquiries

Thank you