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Medicare Part B Income-Related Monthly Adjustment Amounts

If your modified adjusted gross income as reported on your IRS tax return from 2 years ago is above a certain amount, you’ll pay the standard Part B premium and an income-related monthly adjustment amount (IRMAA).

 

Beneficiaries who file individual tax returns with modified adjsuted gross income:  Beneficiaries who file joint tax returns with modified adjusted gross income:

File married &

separate tax return

Total Monthly Premium Amount

 

$106,000 or less $212,000 or less $106,000 or less

$185.00

above $106,000 up to $133,000 above $212,000 up to $266,000 not applicable $259.00
above $133,000 up to $167,00 above $266,000 up to $334,000 not applicable $370.00
above $167,000 up to $200,000 above $334,000 up to $400,000 not applicable $480.90
above $200,000 and less than $500,000 above $400,000 and less than $750,000 above $106,000 and less than $394,000 $591.90
$500,000 or above $750,000 or above $394,000 or above $628.90

 

 

Medicare Drug Coverage (Part D) Premiums

The chart below shows your estimated drug plan monthly premium based on your income. If your income is above a certain limit, you’ll pay an income-related monthly adjustment amount in addition to your plan premium. If your yearly income in 2023 was: 

 

File Individual 

tax return

File joint tax return File married & separate tax return You pay each month (in 2025)
$106,000 or less $212,000 or less $106,000 or less Your plan premium

above $106,000 up to $133,000

above $212,000 up to $266,000 not applicable $13.70 + your plan premium
above $133,000 up to $167,000 above $266,000 up to $334,000 not applicable $35.30 + your plan premium
above $167,000 up to $200,000 above $334,000 up to $400,000 not applicable $57.00 + your plan premium
above $200,000 and less than $500,000 above $400,000 and less than $750,000 above $106,000 and less than $394,000 $78.60 + your plan premuim
$500,000 or above $750,000 or above $394,000 or above $85.80 + your plan premium

 

 

2025 Part D national base premium — $36.78

Medicare uses the national base premium to estimate the Part D late enrollment penalty and the income-related monthly adjustment amounts listed in the table above. The national base amount can change each year. If you pay a late enrollment penalty, your total premium amount may be higher. 

 

This information comes from www.medicare.gov

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