The Pension Protection Act toughens the tax laws for charitable donations. Under the new law, taxpayers must keep records of all cash donations. Individuals must show a receipt from the charity, a canceled check, or credit card statement to prove their donation. No tax deduction will be allowed if the taxpayer cannot provide any supporting documentation. Taxpayers will not need to mail in the receipts with their tax return. Instead, taxpayers will need to keep receipts and other documentation with their copy of the return in the event of an IRS audit.