Hi YUK LING LOO,
The tax year comes to an end on 5 April 2023.
It is most likely now, that we will be unable to issue the correct tax code to your employer, that they can operate.
From 6 April 2023, we start a new tax year and your employer will use a new tax code.
After that date, your employer will give you a P60.
You can use this to claim a repayment of tax for 2022/23 tax year.
Contact details here:
Income Tax: general enquiries
You can also check to see if you need to complete a s Self Assessment tax return be answering the questions here:
Check if you need to send a Self Assessment tax return
If you do, claim a repayment by submitting the completed tax return.