A sample acknowledgement letter helps acknowledge payments received from clients as advance payments, membership, loans, or school fees. Complaint sample. PDF.Complaint fill in. PDF. Acknowledgment of receipt for payment​​ Use this template to acknowledge the receipt of a payment. Dear (Recipient's name), I hope you are well. Having a proof that confirms the completion of transactions is important for businesses. This modification allows us to send an acknowledgment receipt and copy of filed image. Have all owners who occupy the property as their primary residence sign the certification statement that is included in the letter. Grant Proposal (if one exists). A written rent demand must give you at least 14 days' notice to pay the rent before a court case can be started.