If your itemized deductions include state/local/property taxes, the standard deduction is likely higher.
Under the new tax laws, state/local/property taxes are capped at a $10,000 deduction, regardless of how much you actually paid.
The itemized deduction for job related expenses has also been eliminated at the federal level.
These are the likely reasons the program chose the standard deduction for you.
For more information, follow this link: Should You
Itemize
