Payment Enclosed: Single Invoice –
[Name, Company Name & Address here]
We received your invoice [invoice no.] dated [date] for an amount of $[invoice amount].
We are sending a check [check no.] in the amount of $[check amount] along with this letter. After the credit of this amount to our account with you, the remaining outstanding will be $[remaining outstanding amount]
Please advise us if this amount is accurate as per your records.
[Your name & Designation]
Encl: [Enclosures List here]