On which line should the signature line of a standard letter start after the last sentence?

In standard letter formatting, the signature line appears after the closing phrase of the letter, which is typically aligned with the left margin. After the last sentence of the body and the closing, the signature line begins on the fourth line down. This ensures that there is appropriate spacing and clarity between the closure of the message and the sign-off, providing a clean and professional appearance. The spacing also allows for any additional notes or information that may precede the signature, such as a printed name or title.