Voluntary Disclosure Interest Calculator for 2021/22

I need to fill out a Voluntary Disclosure form (CompC29DDS) for a few recent years. To get the Interest payment (labelled "b" on the form) I have used HMRC's (Acrobat-based) "Calculator for working out Interest and Penalties". But this only goes up to 2020/21 tax year. When will HMRC publish one to cover the most recent tax year, please?

Hi JanetB,
As the 21 to 22 and 22 to 23 tax year can still have Self Assessments Tax returns filed online or amended, the system will not update for 21 to 22 until after 31 January 2024. 
Thank you.