Interest u/s 234b if amt of capital gain account scheme not utilized

Rajeev Yadav (51 Points)

07 August 2023  
property sold in April 2020 and CG deposited in capital gain scheme account but not utilized till 3 years. long term capital gain will be taxable in 2023-24.

But from when interest u/s 234b will be applicable ??
from 2020 or from 2023 ??

assessee is liable to pay advance tax