Reviewed by Thomas J. Catalano Fact checked by Vikki Velasquez The discount rate refers to the interest rate used when calculating the net present value (NPV) of an investment. It represents the ...

In order to calculate the price, you need to know the number of days until maturity and the prevailing interest rate. Take the number of days until the Treasury bill matures, and multiply it by ...

While the calculator is named with Black Friday in mind, you can use it any time you want to check the math on a supposed sale price. To kick the tires on this calculator, I tested out a simple ...