Social Security Basics: When to Claim and How Benefits Work

The decision of when to claim Social Security is one of the highest-stakes financial choices in retirement — and one of the most misunderstood. Claiming at 62, the earliest age allowed, reduces your benefit by up to 30% permanently compared to waiting until your full retirement age. Waiting until 70 increases it by roughly 77% compared to claiming at 62. That difference persists for the rest of your life and, for married couples, for the life of the surviving spouse.

The Social Security Administration designs these adjustments to be roughly actuarially neutral on average — meaning that if you live to the average life expectancy, the total lifetime benefits should be similar regardless of when you claim. The decision becomes consequential when your health or longevity expectation differs significantly from average, or when spousal benefit strategies are in play.

How your benefit is calculated

Your Social Security benefit is based on your 35 highest-earning years, adjusted for inflation. The SSA converts your earnings history into an Average Indexed Monthly Earnings figure, then applies a progressive formula that replaces a higher percentage of lower earnings and a lower percentage of higher earnings. The result is your primary insurance amount (PIA) — the benefit you'd receive at your full retirement age. You can see your projected benefit at any time by creating an account at ssa.gov.

If you have fewer than 35 years of earnings history, the missing years are counted as zeroes in the calculation, which pulls down your benefit. Continuing to work in your early 60s — even part-time — can replace zero-year entries with actual earnings and meaningfully increase your projected benefit. Every additional year of solid earnings above a zero year adds to the average.

Full retirement age and the claiming spectrum

Full retirement age (FRA) is 67 for anyone born in 1960 or later. Claiming at 62 permanently reduces the monthly benefit to 70% of your PIA. Claiming between 62 and 67 produces a proportional reduction. Waiting past 67 generates delayed retirement credits of 8% per year, up to age 70 — a permanent 24% increase over the FRA amount for someone who waits the full three years.

The breakeven age — the point at which total lifetime benefits from waiting exceed total benefits from claiming early — is roughly age 80 to 82 for the 62-vs-67 comparison and around 80 to 81 for 67-vs-70. If you expect to live past your mid-80s, later claiming wins on a cumulative basis. If your health is poor or family history suggests a shorter lifespan, earlier claiming may produce better total lifetime benefits. The average American 65-year-old lives to about 84 for men and 87 for women — which means the odds favor later claiming for many people.

Spousal benefits — a separate calculation

A spouse who earned less during their career — or didn't work — may be entitled to a spousal benefit of up to 50% of the higher-earning spouse's PIA at full retirement age. The spousal benefit does not earn delayed retirement credits past FRA, which changes the claiming strategy: the lower-earning spouse has less incentive to wait past FRA, since the benefit won't grow after that point.

For married couples, the higher-earning spouse's claiming decision has outsized importance because the surviving spouse receives the higher of the two benefits for the rest of their life. When a high-earning spouse delays to 70, they lock in a larger benefit that will support the surviving spouse — who statistically is likely to be a woman with a longer remaining life expectancy. This is one of the most common reasons financial planners recommend delaying the higher earner's claim even when it means drawing down savings in the interim.

Working while receiving Social Security — the earnings limit

If you claim Social Security before your full retirement age and continue working, the earnings test applies. In 2024, the SSA withholds $1 in benefits for every $2 you earn above $22,320 annually. This is not a permanent loss — the withheld benefits are added back to your monthly payment once you reach FRA, recalculated as if you had delayed claiming. But the cash flow disruption during the pre-FRA years can complicate financial planning. After FRA, there is no earnings test; you can earn unlimited income without affecting your benefit.

Taxes on Social Security benefits

Social Security benefits are partially taxable for many retirees. The IRS uses 'combined income' — adjusted gross income plus nontaxable interest plus half of your Social Security benefits — to determine the taxable portion. Below $25,000 for single filers and $32,000 for married filing jointly, benefits are tax-free. Between $25,000 and $34,000 for single filers, up to 50% of benefits may be taxable. Above $34,000 for single filers, up to 85% of benefits may be taxable.

For retirees with significant traditional IRA or 401(k) balances, required minimum distributions beginning at age 73 can push combined income high enough to trigger substantial taxation of Social Security benefits. Converting some traditional IRA funds to Roth before claiming Social Security — during years when income is lower — can reduce future RMDs and the associated taxation. This kind of Roth conversion strategy in your early retirement years is worth modeling with a tax advisor before finalizing a Social Security claiming decision.