@delta
I don't think you can use RATE formula to return the result you want as it is not set up that way. You could use IRR to calculate the effective rate by setting IF conditions inside. This way, you don't have to set up the entire range (L2:M38 in your workbook).
For example, below array formula gives the result you are after.
i know, how to use IRR formula in different condition. i just want to know that is their any other way to calculate Rate by using excel formula. the ultimate reason why i want this Rate formula is only to use this in multiple way, like a calculator.
i know, how to use IRR formula in different condition. i just want to know that is their any other way to calculate Rate by using excel formula. the ultimate reason why i want this Rate formula is only to use this in multiple way, like a calculator.