A company's written promise to pay (in the form of a promissory note) a future amount is a(n) :

A) Unearned revenue.
B) Prepaid expense.
C) Credit account.
D) Note payable.
E) Account receivable.

Note Payable

A written promise to pay a specific sum of money at a future date, typically including interest payments.

Promissory Note

A financial instrument in which one party (the issuer) promises in writing to pay a determinate sum of money to the other (the payee), either at a fixed or determinable future time or on demand of the payee, under specific terms.

Prepaid Expense

Payments made beforehand for products or services that will be provided later on.