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Social Security

U.S. public benefit system that provides retirement, survivor, and disability income based on work history and program rules.

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Social Security is the main U.S. public income program for retirees, certain survivors, and eligible disabled workers.

For retirement planning, it is often the baseline guaranteed cash flow that sits beside pensions, savings withdrawals, and investment income.

Why It Matters

Social Security matters because it changes the structure of retirement funding.

  • benefits are tied to work history and claiming age

  • payments can provide durable lifetime income

  • claim timing affects monthly benefit size

For many households, Social Security is not the whole retirement plan, but it is the floor that makes the rest of the plan easier to build around.

Revised on Monday, May 18, 2026