Dedicated civil service employee networks frequently share automated calculation software. You can find reference spreadsheets uploaded by accounts teams on public directories like the APTC Treasury Soft Repository on Google Groups.
The most reliable source is the Employees' Provident Fund Organization (EPFO) website. aptc form 58 excel format link
Digital formats can be sourced immediately via portals like SchoolEdu Teacher Related Forms Portal or the AP Treasury Forms Library by K.V.V.S.N. Murthy to download editable Excel templates directly. What is APTC Form 58? aptc form 58 excel format link
Clearly define the full Head of Account for the expenditure. aptc form 58 excel format link