One significant difference between Social Security benefits and Medicare benefits under FICA is their eligibility criteria. Social Security benefits are based on your work history and earned income, while Medicare eligibility is primarily determined by age (65 or older) or certain disabilities, regardless of work history. This distinction impacts financial planning as Social Security provides a continuous income stream in retirement, whereas Medicare primarily covers healthcare costs. Consequently, individuals must factor in both their expected Social Security benefits and healthcare expenses, including Medicare premiums, deductibles, and coinsurance, when planning for retirement. A pro tip is to consider purchasing supplemental Medicare coverage, such as Medigap or Medicare Advantage plans, to help cover out-of-pocket costs not covered by Original Medicare. This can provide greater financial protection and peace of mind during retirement.