You must maintain a bank record, payroll deduction record or written communication from the organization with its name, the date and amount of your contribution.

FORBES: 10 Simple Rules For Tax-Wise Gifts To Charity

To claim a deduction for money you donate, you must maintain a bank record, payroll deduction record or written communication from the organization containing its name, the date and amount of your contribution.

FORBES: Saving Taxes By Giving To Charity