additional medical insurance does include paying for supplement ins. to medicare ?

[xmasbaby0]

If you are paying out of pocket for a supplemental insurance plan, vision or dental plan,  or "Medicare Advantage" plan, etc. you can enter those premiums as a medical expense.   If you get Social Security benefits, the amount deducted from your Social Security is on your SSA1099; when you enter the SSA1099, that amount automatically flows to the medical expense section of the software, so do not enter that again.

MEDICAL EXPENSES

The medical expense deduction has to meet a rather large threshold before it can affect your return. The amount of medical (including dental, vision, etc.)  expenses that will count toward itemization is the amount that is OVER 7.5% of your adjusted gross income. You should only enter the amount that you paid in 2025—do not include any amounts that were covered by insurance or that are still outstanding.  Of course, your medical expenses plus your other itemized deductions still have to exceed your standard deduction before you will see a difference in your tax due or refund.

To enter your medical expenses go to Federal>Deductions and Credits>Medical>Medical Expenses

2025 STANDARD DEDUCTION AMOUNTS

SINGLE $15,750  (65 or older/legally blind + $2000)

MARRIED FILING SEPARATELY $15,750  (65 or older/legally blind +1600)

MARRIED FILING JOINTLY $31,500  (65 or older/legally blind + $1600)

HEAD OF HOUSEHOLD $23,625 (65 or older/legally blind + $2000)

[DoninGA]

Medicare Supplement Insurance (Also known as Medigap) is a valid medical expense.  You can deduct the premiums paid for this insurance as an itemized medical deduction on Schedule A.

[Vanessa A]

Yes.  I am assuming you are talking about the Itemized deduction section.  The supplemental Medicare insurance is included in additional medical insurance for itemized deductions. 

Your health insurance and all medical expenses are only deductible for the amount that is over 7.5% of your AGI.  This means if your AGI is $50,000, then the amount that is over $3,750 is deductible.  

Itemized expenses include mortgage interest, gambling losses up to 90% or up to winnings (whichever is less),  charitable contributions, state and local taxes up to $40,000, medical expenses in excess of 7.5% of your AGI and federally declared disaster casualty and losses in excess of 10% of you AGI with the first $100 not counting towards the loss.  

Then your total itemized expenses would need to be greater than your standard deduction below in order to benefit from your expenses. 

The 2025 Standard Deductions are as follows:

• Married Filing Joint (MFJ)              $31,500
• Married Filing Separate (MFS)      $15,750
• Head of Household (HOH)             $23,625 
• Single                                                 $15,750                                

Blind or over 65 and MFJ or MFS add $1,600

Single or HOH if blind or over 65 add $2.000

 (Edited 2/5/26@4:52AM)