Sounds to me the program has selected the Standard Deduction over Itemized Deductions so that it will give you the maximum refund. For 2020, the standard deduction for MFJ is $24,800. If your total amount of itemized deduction does not exceed the standard deduction, you will not benefit by taking the itemized deduction. I will suggest you to review your Schedule A to check the amount on line 17.
In the program, when you enter itemized deductions such as mortgage interest, property taxes, medical expenses, charitable contributions, all of these items are added together. Unless the total of itemized deductions exceeds the standard deduction for your filing status, you would not see any change in tax due or refund.
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