Your student loan interest reveals just how much you’re really paying for that college education. Here’s a step-by-step guide on how to calculate it.

Curious about how the interest on your loan works? Learn how interest rates are determined and how to calculate interest on a loan yourself.

Learn what simple interest is and how to calculate it using examples with a simple interest formula. You can also use a simple interest calculator.

Doing the math and crunching the numbers when it comes to figuring out your loan's interest can be complicated. Here's how to calculate interest on a loan.

To calculate per-diem interest, take the interest rate (be sure to express it as a decimal, so 10% becomes 0.10) and divide by 365 to determine the daily interest rate.

While simple interest is generally simple to calculate over the life of a loan or investment, it can also be useful to know how much interest is accruing on a daily, or "per-diem," basis.

How to Calculate Simple Interest. Simple interest is used when a company borrows money for a loan. Usually this amount will be on a monthly basis.

There are three simple steps to determining the interest liability on a loan note, so you'll know the total amount you're paying.

Everything you need to know to calculate an interest rate with the present value formula.