There are two options under Loan calculation settings in extra settings. They are
Deduct Flat EMI for loans and
Deduct interest on loan from loan taken date.
When we enable Deduct flat EMI for loans then it will start deducting based on the flat EMI, if not it will deduct basis floating EMI.
When we enable Deduct interest on loan from loan taken date, the interest will begin to deduct from the loan taken date.
To enable the above two options, follow the below pathway-
PATHWAY- Settings>payroll>Extra settings