Part D Extra Help Income Limit 2025 Part D. According to the cms, the part d base beneficiary premium will increase by $2.08, or 6%, from $34.70 to $36.78. This program helps offset the cost of medicare part d premiums, deductibles,.

Medicare’s part d low income subsidy (also called lis, or extra help) helps enrollees pay for their prescription drug costs. According to the cms, the part d base beneficiary premium will increase by $2.08, or 6%, from $34.70 to $36.78.