Substantiation of cash contributions: A donor who claims such deductions must retain written record regardless of the amount contributed. For contribution of money the donor must retain:
- A cancelled check,
- A written acknowledgement from the donee showing the date and amount of contribution, No deduction is allowed for any contribution of $250 or more unless the taxpayer can substantiate the contribution via a written acknowledgement from the donee organization. This receipt must be in the taxpayer’s possession at the time the return is filed. A cancelled check is not valid substantiation for amounts over $250.