Question 1

When should I use simple interest instead of compound interest?

Accepted Answer

Simple interest can be appropriate for some short-term products or where interest is not reinvested. For many real-world savings and loans, compounding is used instead.

Question 2

Is APR always the same as the simple interest rate?

Accepted Answer

For many simple-interest contexts, yes. Always confirm the product’s quoted rate and whether it assumes compounding or a specific day-count method.

Question 3

Do fees change the principal?

Accepted Answer

Yes. Fees can increase the effective amount you borrow or invest. For planning, incorporate fees into principal if appropriate.

Simple Interest Calculator

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