但是，如果工作10年夠了40分,$518是免去的，所以也就185一個月

• When determining how much does Medicare cost for beneficiaries, remember most people qualify for premium-free Part A if they have worked 40 quarters in the U.S. and paid Medicare taxes during that time, but if not, there is a monthly premium.
• The Part B and D premiums are based on income, so you could pay more for Part B and Part D if you have a higher income. 
• The standard Medicare Part B premium in 2025 is $185.