Collection Letter Following Promissory Note

Date
Contact Name
Address
Address2
City, State/Province
Zip/Postal Code

OBJECT: COLLECTION DEMAND LETTER
Dear [CONTACT NAME],

As of the date of this letter, your payment which, under the terms of a promissory note you entered into, was due on [DATE], has not been received and is now past due. If you have already forwarded your payment, please disregard this letter; otherwise, please forward your payment immediately in order to avoid default under the promissory note dated [DATE].

Sincerely,
Your name
Your title
(800) 123-4567
youremail@yourcompany.com