Currently, when changing interest rate on deposit product, the change is propagated during EOD jobs to all accounts (according to APP-288) and interest accrued are recalculated based on the new interest rate.
To enable changing interest rate on all existing accounts for a given product without calculating interest that accrued until then
- to easily change interest rate for all accounts in one place, on product level (without affecting interest which accrued earlier)
- to store the history of interest rate changes on product level
- it is told to be quite basic functionality in other CBSs