Social Security Benefits Calculator

How Social Security Benefits Are Calculated

The Social Security Administration uses a formula that most people find unnecessarily complex, but the core mechanics are straightforward. They take your 35 highest-earning years, adjust each year for wage inflation, calculate your Average Indexed Monthly Earnings (AIME), and then apply a progressive formula that replaces a higher percentage of income for lower earners.

The replacement formula for 2026 works in three tiers. The first $1,174 of monthly earnings is replaced at 90%. Earnings between $1,174 and $7,078 are replaced at 32%. Anything above $7,078 is replaced at 15%. This progressive structure means someone earning $30,000 per year gets about 55% of their income replaced, while someone earning $150,000 gets only about 28% replaced. Social Security was never designed to be your entire retirement — it is a foundation to build on.

The Claiming Age Decision

This is the single most impactful financial decision most Americans make regarding Social Security, and most people get it wrong by claiming too early.

Claiming at 62 (the earliest possible age) permanently reduces your benefit by about 30% compared to waiting until full retirement age of 67. Claiming at 70 (the latest beneficial age) increases your benefit by about 24% beyond full retirement age. The difference between claiming at 62 and 70 is roughly 77% — a $1,500/month benefit at 62 becomes $2,655 at 70.

The breakeven age — when total lifetime benefits from waiting exceed total benefits from claiming early — is typically around 80-82. Given that the average 62-year-old lives to about 84 (men) or 87 (women), most people come out ahead by waiting. If you have health concerns that suggest a shorter lifespan, claiming earlier makes mathematical sense. If you are healthy and have other income sources to bridge the gap, waiting until at least full retirement age is almost always the better financial move.

What Most People Get Wrong

The biggest misconception is that Social Security is going bankrupt. The trust fund is projected to face shortfalls around 2033-2035, but that does not mean checks stop. Ongoing payroll taxes from current workers would still fund about 75-80% of scheduled benefits even if Congress does absolutely nothing. Historically, Congress has always adjusted the program before reaching that point. Planning as though you will receive 75% of your projected benefit is reasonable conservatism without ignoring the program entirely.

Another common mistake is not accounting for spousal benefits. A non-working or lower-earning spouse can claim up to 50% of the higher-earning spouse's full retirement age benefit. For married couples, coordinating claiming strategies can add tens of thousands of dollars in lifetime benefits.

Strategies That Actually Work

If you can afford to wait, delay claiming as long as possible — every year past 67 adds 8% to your benefit, guaranteed. No investment offers a risk-free 8% annual return. If you must claim early, continue working if possible — your benefit is recalculated annually to include new earnings, potentially increasing future payments. And regardless of when you claim, make sure you have at least 35 years of earnings on your record, since years with zero earnings pull your average down significantly.

How much will I get from Social Security?

The average benefit in 2026 is about $1,976 per month. Your specific amount depends on your 35 highest-earning years, the age you start claiming, and your work history. Use the calculator above with your actual earnings for a personalized estimate.

What is full retirement age?

For anyone born in 1960 or later, full retirement age is 67. You can claim as early as 62 with reduced benefits (about 30% less), or delay until 70 for maximum benefits (about 24% more than at 67). Each month you delay past 67 adds roughly 0.67% to your monthly check.

Will Social Security run out of money?

The trust fund faces projected shortfalls around 2033-2035, but benefits will not disappear. Ongoing payroll taxes from current workers would still cover 75-80% of scheduled benefits. Congress has historically adjusted the program before reaching critical points, and is likely to do so again through some combination of tax increases, benefit adjustments, or retirement age changes.

Should I claim Social Security at 62?

Only if you need the money to cover basic expenses and have no other income sources. Claiming at 62 permanently reduces your benefit by about 30%. If you can bridge the gap with savings, part-time work, or a spouse's income, waiting until at least 67 (or ideally 70) results in significantly more lifetime income for most people who live to average life expectancy.