You make the call

Question: Mariana and Luis regularly contribute $600 cash annually to their favorite charity and ask you if they may take the above-the-line deduction for the $600 on their 2020 tax return for which they file MFJ. What do you tell them?

Answer: No, they may not claim all $600. For 2020, Mariana and Luis are allowed to deduct up to $300 of cash qualified charitable contributions as a deduction before AGI if they claimed the standard deduction [§62(a)(22)]. For 2020, whether filing as single or MFJ, the amount is still only $300, not $600. For 2021, a similar provision would allow a deduction of up to $600 for MFJ filers as a deduction from AGI [§§ 170(p) and 63(b)(4)]. To verify their favorite charity is a qualified organization to receive deductible contributions, use the IRS Tax Exempt Organization Search tool. The Coronavirus Aid, Relief, and Economic Security Act changed the law for 2020 charitable contributions, and for 2021 the Consolidated Appropriations Act, 2021 changed the law.