Hi,
If the balance you owe is 0.00 AFTER both calculated Payments on Account have been deducted, then you would still need to pay the 2nd Payment on Account.
If your 2023 to 2024 calculation itself shows 0.00, then you would not need to pay the 2nd Payment on Account, but please contact our Self Assessment team if your account still shows this 2nd Payment on Account due after you filed your return, this should have automatically updated, so you may not have fully submitted your return.
Self Assessment: general enquiries
Thank you.