A Paycheck (also known as a pay statement or pay stub) is a detailed, formal record provided by an employer to an employee, which breaks down the employee's earnings, deductions, and net pay for a specific pay period.

A Payment Receipt is a critical business document issued after a payment has been made, serving as proof that a financial transaction for goods or services has been completed.

An invoice is a formal document issued by a seller to a buyer to request payment for goods sold or services rendered.