A sample acknowledgement letter helps acknowledge payments received from clients as advance payments, membership, loans, or school fees. Debt Acknowledgement Letter Sample - Free Fillable PDF Forms.A description of the gift and the amount received; Any goods or services your organization provided in exchange for the donation. Learn how to write effective fundraising letters that inspire more support from donors. Explore best practices and templates in this comprehensive guide. An acknowledgement agreement is a legal document formalizing some agreement between parties, similar to a memorandum of understanding. How do you acknowledge a payment received. Cash acknowledgement form. Donation Acknowledgement and Receipt, 09-27-2023. GAO-86. Reportable Prizes and Awards, 04-21-2021. GAO-88.