How much are your Itemized Deductions? The questions I've seen turn out that the Standard Deduction + the extra 300 for charity is more than your Itemized Deductions . Check 1040 line 10b. And some deductions are limited.
For 2020 the standard deduction amounts are:
Single 12,400 + 1,650 for 65 and over or blind (14,050)
HOH 18,650 + 1,650 for 65 and over or blind
Joint 24,800 + 1,300 for each 65 and over or blind
Married filing Separate 12,400 + 1,300 for 65 and over or blind
