4 As a commenter noted, deductions reduce taxable income, but not AGI.
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According to Maryland State Law, the Maryland standard deduction is $2,250, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGItaxable income slightly (and therefore your federal tax burden), but will reduce your Maryland AGItaxable income by potentially up to $20,000. That would explain the significant difference in results you see.

According to Maryland State Law, the Maryland standard deduction is $2,250, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGI slightly (and therefore your federal tax burden), but will reduce your Maryland AGI by potentially up to $20,000. That would explain the significant difference in results you see.

According to Maryland State Law, the Maryland standard deduction is $2,250, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal taxable income slightly (and therefore your federal tax burden), but will reduce your Maryland taxable income by potentially up to $20,000. That would explain the significant difference in results you see.

3 edited body
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According to Maryland State Law, the Maryland standard deduction is $2,500250, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGI slightly (and therefore your federal tax burden), but will reduce your Maryland AGI by potentially up to $20,000. That would explain the significant difference in results you see.

According to Maryland State Law, the Maryland standard deduction is $2,500, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGI slightly (and therefore your federal tax burden), but will reduce your Maryland AGI by potentially up to $20,000. That would explain the significant difference in results you see.

According to Maryland State Law, the Maryland standard deduction is $2,250, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGI slightly (and therefore your federal tax burden), but will reduce your Maryland AGI by potentially up to $20,000. That would explain the significant difference in results you see.

2 added 2 characters in body
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According to [Maryland State Law][1]Maryland State Law, the Maryland standard deduction is $2,500, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGI slightly (and therefore your federal tax burden), but will reduce your Maryland AGI by potentially up to $20,000. That would explain the significant difference in results you see.

1: https://taxes.marylandtaxes.gov/Individual_Taxes/General_Information/What_s_New_for_the_Tax_Filing_Season.shtml

According to [Maryland State Law][1], the Maryland standard deduction is $2,500, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGI slightly (and therefore your federal tax burden), but will reduce your Maryland AGI by potentially up to $20,000. That would explain the significant difference in results you see.

1: https://taxes.marylandtaxes.gov/Individual_Taxes/General_Information/What_s_New_for_the_Tax_Filing_Season.shtml

According to Maryland State Law, the Maryland standard deduction is $2,500, and you may not itemize in Maryland if you choose the standard deduction on your federal return.

Therefore, choosing to itemize will increase your federal AGI slightly (and therefore your federal tax burden), but will reduce your Maryland AGI by potentially up to $20,000. That would explain the significant difference in results you see.

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