Social Security Benefits Explained: How Much Will You Actually Get?
Most people guess at their Social Security benefit. Here's how to calculate it — and why when you claim changes everything.
By CashSmartGuide Editorial Team - Last updated: April 2026 | 12 min read
Social Security is the largest source of retirement income for most Americans — and most Americans don't know what they'll actually receive. They have a vague idea. They assume it'll be something. Some assume it'll be enough. Very few have done the math.
The problem isn't that the information is hidden. You can get your estimated benefit on ssa.gov in about 10 minutes. The problem is that the system is more nuanced than people expect. When you claim matters enormously — the difference between claiming at 62 versus 70 can be $1,000 or more per month, for the rest of your life.
This guide explains how your benefit is calculated, what decisions affect it, and how to think about where Social Security fits into your retirement income plan.
The Key Numbers
Your Social Security benefit is based on your 35 highest-earning years, adjusted for inflation. Full retirement age is 67 for anyone born after 1960. Claiming at 62 reduces your benefit by up to 30%. Waiting until 70 increases it by 24% beyond your full retirement benefit. The monthly average in 2026 is roughly $1,900 for retired workers — but individual amounts vary widely based on lifetime earnings.
How Social Security Actually Calculates Your Benefit
The formula is more complex than most people assume, but you don't need to understand every variable. Here's the version that's actually useful.
Your Earnings History (35 Years)
Social Security looks at your 35 highest-earning years of work where you paid Social Security taxes. Each year's wages are adjusted for inflation using an index. If you worked fewer than 35 years, the remaining years count as zeros — which pulls your average down. This is why working even a few extra years near retirement can meaningfully boost benefits.
Average Indexed Monthly Earnings (AIME)
The SSA takes your 35-year inflation-adjusted earnings total, divides by 420 months (35 years × 12), and gets your AIME. Someone who earned $60,000 on average might have an AIME of $5,000/month.
Primary Insurance Amount (PIA) — Your Base Benefit
Social Security applies a progressive benefit formula to your AIME. Lower earners get back a higher percentage of their wages. Higher earners get more in total dollars but a lower percentage.
Simplified 2026 formula:
- • 90% of the first $1,174 of AIME
- • 32% of AIME between $1,174 and $7,078
- • 15% of AIME above $7,078
(Bend points adjust annually for inflation)
The result is your PIA — what you'd receive if you claim exactly at full retirement age. Everything from there depends on when you claim.
Full Retirement Age: It's Probably Not 65
Full retirement age (FRA) is the age at which you receive 100% of your calculated benefit. It's not 65 for most people reading this — that number applied to earlier generations.
| Birth Year | Full Retirement Age | Notes |
|---|---|---|
| 1943–1954 | 66 | Already at or approaching FRA |
| 1955 | 66 + 2 months | |
| 1956 | 66 + 4 months | |
| 1957 | 66 + 6 months | |
| 1958 | 66 + 8 months | |
| 1959 | 66 + 10 months | |
| 1960 and later | 67 | Anyone born in 1960 or after |
The Claiming Decision: Early vs Waiting
You can start collecting as early as 62 or as late as 70. The timing permanently adjusts your monthly benefit. This is one of the most consequential financial decisions in retirement planning — and there's no universal right answer.
Claiming at 62 (Early)
Your benefit is permanently reduced by up to 30% compared to your full retirement age benefit. If your FRA benefit would be $2,000/month, claiming at 62 might give you $1,400/month instead — for life.
You collect for more years, which is the argument for going early. If you have health concerns, or if you need the income and have no other option, early claiming can make sense.
The breakeven is roughly age 77–78. If you live past that, waiting paid off. If you don't, claiming early came out ahead.
Waiting Until 70 (Maximum)
For every year you delay past full retirement age, your benefit grows by 8%. Wait from 67 to 70 and your monthly payment is 24% higher than your FRA benefit — permanently. On a $2,000 FRA benefit, that's $2,480/month.
This makes the most sense if you're in good health, have other income to live on in your early 60s, and want to maximize income (or survivor benefits for a spouse) in your later years.
There's no benefit to waiting past 70. The 8%/year credits stop accumulating.
The case for somewhere in the middle
Many people don't want to wait until 70 and don't need to claim at 62. Claiming at 64, 65, or at exactly full retirement age (67) is a reasonable middle path. The key insight is that every month you delay increases your benefit slightly — so even waiting 12 months past 62 improves your situation meaningfully.
Spousal and Survivor Benefits
Social Security isn't just about your own work record. If you're married, divorced, or widowed, you may have access to benefits based on your spouse's record — sometimes more than you'd receive on your own.
Spousal Benefit
If your spouse has a significantly higher earnings record than yours, you may qualify for up to 50% of their full retirement benefit — whichever is higher between your own record and the spousal amount. You both need to be at least 62. The claiming strategy here gets complex: which spouse claims first and when affects both benefits.
Divorced Spouse Benefit
If you were married for at least 10 years and are now divorced, you may still claim on your ex-spouse's work record. This doesn't affect their benefit or their current spouse's benefit. You need to be at least 62, currently unmarried, and your own benefit would need to be lower than the divorced spousal amount.
Survivor Benefit
When a spouse dies, the survivor can claim the deceased's full benefit if it's higher than their own. This is one of the strongest arguments for the higher-earning spouse to delay claiming until 70 — that larger benefit becomes the survivor's check for the rest of their life.
Social Security and Taxes: What Nobody Tells You
Social Security benefits are not tax-free. Depending on your total retirement income — Social Security plus pensions, 401(k) withdrawals, interest, and other income — up to 85% of your Social Security benefit can be subject to federal income tax.
Under $25,000 (single) / $32,000 (joint)
0% of benefits taxable
$25,000–$34,000 (single) / $32,000–$44,000 (joint)
Up to 50% of benefits taxable
Above $34,000 (single) / $44,000 (joint)
Up to 85% of benefits taxable
State taxes on Social Security vary — about a dozen states tax it at the state level too. This is worth knowing when projecting retirement income. Some people end up with a higher tax bill than they expected because they didn't account for Social Security being partially taxable.
Check Your Own Estimate Right Now
The SSA makes your estimated benefit available online in a few minutes. Go to ssa.gov and create a "my Social Security" account. You'll see your full earnings history, what your benefit would be at 62, at full retirement age, and at 70.
Review the earnings record carefully. If any years look wrong (too low), there's a process to correct them — and it's easier to fix errors now than after you've claimed. Keep in mind that the estimates assume you continue earning at your current income until you claim, so they'll be on the high side if you plan to retire early.
The Bottom Line
Social Security is a significant piece of retirement income for most Americans — but it's rarely enough on its own. The average benefit covers basic expenses in lower cost-of-living areas. In higher cost-of-living cities, it covers a fraction of what most people need.
The claiming decision deserves real thought. Early claiming makes sense for some situations. Waiting until 70 makes sense for others — especially when there's a spouse who will outlive you and depend on the survivor benefit. Neither decision is automatically correct.
What's universally true: the people who plan well — who know their estimated benefit, understand how the timing affects it, and coordinate Social Security with their other retirement income — consistently end up in better shape than those who claim at 62 because that's when they could first collect.
More Retirement Planning Guides
How Much Do You Need to Retire?
The total number — including what Social Security fills and what it doesn't
Retirement Savings by Age
Are you on track to retire with or without Social Security?
How a 401(k) Works
Building the savings that supplement your Social Security
How Inflation Affects Retirement Savings
How Social Security's COLA adjustments work in practice
Financial Advice Disclaimer
This article provides general educational information about Social Security benefits. Benefit amounts, tax thresholds, and program rules are subject to change by Congress and the Social Security Administration. This is not personalized financial or tax advice. For an accurate estimate of your specific benefit, visit ssa.gov. For advice on claiming strategy, consider consulting a certified financial planner or Social Security claiming specialist.