Part A premium Most people don't pay a monthly premium for Part A (sometimes called "premium-free Part A"). If you buy Part A, you'll pay up to $422 each month. If you paid Medicare taxes for less than 30 quarters, the standard Part A premium is $422. If you paid Medicare taxes for 30-39 quarters, the standard Part A premium is $232. Part A hospital inpatient deductible and coinsurance You pay: $1,340 deductible for each benefit period Days 1-60: $0 coinsurance for each bene