Social Security is one of the most important financial tools available to American workers, yet many people approach retirement without fully understanding how it works. Getting to grips with the basics now can make a significant difference in how much you ultimately receive.
How Benefits Are Calculated
The more you know about your Social Security benefits, the easier it is to plan for the future. Your Social Security benefit is based on your 35 highest-earning years of work. The Social Security Administration (SSA) adjusts each year’s earnings for inflation, then averages them to arrive at your Average Indexed Monthly Earnings (AIME). A formula is applied to that figure to produce your Primary Insurance Amount (PIA) — the monthly payment you’d receive if you claim at exactly your full retirement age.
If you have fewer than 35 years of earnings on record, the SSA fills in the missing years with zeros, which can noticeably lower your benefit. Working a few extra years to replace those zero-earning years is one of the simplest ways to boost your payout.
Full Retirement Age Matters
Full retirement age (FRA) is not the same for everyone. If you were born between 1943 and 1954, your FRA is 66. For those born in 1960 or later, it rises to 67, with a gradual increase for birth years in between. Claiming before your FRA permanently reduces your benefit by as much as 30% if you claim at 62. Waiting past your FRA, on the other hand, earns delayed retirement credits that increase your monthly benefit by 8% for each year you wait, up to age 70. After 70, there is no additional gain from delaying.
Working While Collecting Benefits
If you claim Social Security before your FRA and continue working, your benefits may be temporarily reduced. In 2024, the SSA withheld $1 for every $2 earned above $22,320. Once you reach full retirement age, this earnings test disappears entirely — you can earn any amount without affecting your benefit. Any benefits withheld before FRA are eventually credited back to you in the form of a slightly higher monthly payment going forward.
Spousal and Survivor Benefits
Married individuals may be eligible for a spousal benefit worth up to 50% of their partner’s FRA benefit, if that amount is larger than their own earned benefit. You do not need a work history to qualify. Divorced spouses can also claim on an ex-spouse’s record if the marriage lasted at least 10 years and they have not remarried. Survivor benefits are separate and can be even more generous — a widow or widower may claim up to 100% of the deceased spouse’s benefit.
Taxes on Social Security
Social Security income is not entirely tax-free. If your combined income (adjusted gross income plus nontaxable interest plus half of your Social Security) exceeds $25,000 as a single filer or $32,000 for a married couple, up to 85% of your benefit may be subject to federal income tax. Some states also tax Social Security, so it is worth checking your state’s rules as part of your retirement planning.
The SSA’s website, ssa.gov, allows you to create a personal account and view your estimated benefits at 62, FRA, and 70 based on your actual earnings history. Reviewing this statement periodically — and checking it for errors — is a smart habit that takes only a few minutes and can help you plan with confidence.