Regardless of whether you’re donating to your favorite charity or giving to a new organization this year, the Oklahoma Society of Certified Public Accountants recommends following this tip to ensure everyone benefits from your donation:

Keep an eye on the calendar. Donations must be made by the end of the tax year for which you want to claim the deduction. If you put a check dated December 31 in the mail by that day, you’re okay. The same goes for donations charged by year’s end to your credit card—even if you don’t pay the bill until next year.