PAYMENT ENCLOSED: SINGLE INVOICE
In reference to your invoice #[INVOICE NUMBER], enclosed, please find our check #[CHECK NUMBER] in the amount of $[AMOUNT]. [STATE WHAT YOU BELIEVE WILL BE THE STATUS OF YOUR ACCOUNT ACCORDINGLY, ex. In consideration of this check, I believe we owe a balance of $1,000.00, due 15 days hence.] Please call me if I am mistaken.