Non-itemizers (those taking the standard deduction) may deduct up to $300 of cash gifts to publicly supported charities (other than Donor Advised Funds and Supporting Organizations). This is for 2020 only.

Tax “experts” disagreed whether $600 could be deducted on a joint return. And the answer is: only up to $300 on a joint return. The staff of the Congressional Joint Committee on Taxation in its 108-page “Description of the Tax Provisions of the CARES Act” (page 21, footnote 76) states the deduction is limited to $300 on a joint return. The staff reports are often described as “The Blue Book.” Back in the dark ages, the printed copies had blue covers; hence the name.