Ask Kim: Make sure you have proof to support charitable tax deductions

Q: What records do I need to keep or receive from a charity to deduct my contributions when I file my 2017 taxes?

A: The records you need depend on the type and the size of the gift. It's important to keep the right records in your files, so you don't lose the deduction if you're audited.

"The IRS is unforgiving on charitable contributions. If you don't have the right pieces of paper, you don't get the deductions," says Bill Fleming, a managing director with accounting firm PwC.

Here is the documentation you will need, based on the type of gift:

Cash gifts of less than $250: Keep a canceled check, credit-card receipt, bank record or acknowledgement from...