Last updated: 2026
We explain how Social Security, Medicare and related retirement tax rules work, using plain language and official published figures. Our guide takes a few answers from you and shows how those general rules may apply. The result is an illustration, not a personal recommendation.
Amounts shown for a given year come from the agencies named above and are labeled with the year they apply to. Some amounts for the coming year are not yet published; where we show a prior-year amount, we say so. Rules and amounts change, so verify at ssa.gov, medicare.gov and irs.gov before you act.
For decisions about when to claim, Medicare enrollment, Roth conversions or withdrawals, consider speaking with a qualified, fee-only fiduciary adviser and a tax professional who can look at your complete situation.
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