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 ...

Accretion of discount is the increase in the value of a discounted instrument as time passes and the maturity date looms closer.

A forward discount occurs when the expected future price of a currency is below the spot price, which indicates a future decline in the currency price.