Generally, taxpayers who don't itemize are unable to deduct charitable contributions. But last year's CARES Act provided non-itemizers with an above-the-line deduction (in other words, a deduction from gross income in calculating adjusted gross income) of up to $300 in eligible donations in 2020. 

What is an Itemizer?

Filters. (US, finance) One who makes itemized deductions on a tax return. noun.

What are non itemized deductions?

When they are filing their taxes, taxpayers need to choose between taking the standard deduction and itemizing their deductions. These cover many key areas, such as medical costs, charitable donations, state taxes, and various expenses related to owning a home. ...