The standard deduction for married jointly filers is now $24,000.
Itemized deductions include medical expenses (which must exceed 7.5% of your AGI), mortgage interest, charity donations and state/local taxes (which are now capped at $10,000).
Many taxpayer are now taking the increased standard deduction, but you will need to review your possible itemized deductions to determine for yourself.
For more information, follow this link: Should You
Itemize