In the field of financial economics, discount is an operation carried out in banking institutions in which they acquire promissory notes or bills of exchange whose face value is deducted by the equivalent of the interest that the paper would generate between its date of issue and the maturity date.

It is the acquisition, by the discounter, of a credit from a third party, of which the discounter is the owner, through cash payment of the amount of the credit, less the discount rate.

They are calculated using the formula "Formula (mathematical logic)"):.

Where:.