About 75 million Americans receive Social Security or Supplemental Security Income checks every month [1]. The average retired worker collects $2,071 per month as of January 2026 [2]. The maximum possible benefit for someone retiring at full retirement age this year? $4,152 [2].
Those are real numbers from a real program that will likely be your single largest source of retirement income. Most people don't understand how it actually works until the month they file.
30-Second Summary: Social Security replaces a portion of your pre-retirement income using a formula based on your 35 highest-earning years. You can claim as early as 62 (with a permanent ~30% cut) or as late as 70 (with a ~24% bonus). In 2026, the average check is $2,071/month, and benefits rose 2.8% thanks to the annual COLA adjustment.
How Social Security Works
Social Security is an insurance program, not a savings account. You pay in through payroll taxes while you work, and the system pays you back when you retire, become disabled, or die (through survivor benefits to your family).
Every paycheck, 6.2% of your wages goes to Social Security. Your employer matches that 6.2%, so 12.4% total flows into the system on your behalf. Self-employed workers pay the full 12.4%, though they can deduct half on their tax return [3].
There's a cap. In 2026, only the first $184,500 of your earnings is subject to this tax [2]. Earn $300k? You stop paying Social Security tax after $184,500. The maximum employee contribution works out to $11,439 for the year.
Work Credits: The Entry Ticket
You need 40 work credits to qualify for retirement benefits. That's roughly 10 years of work. In 2026, you earn one credit for every $1,890 in covered earnings, up to four credits per year [2]. So earning $7,560 in a year gets you the maximum four credits.
Most workers accumulate far more than 40 credits over a career. But if you left the workforce early (maybe to raise children, maybe to care for a family member), those credits matter. Thirty-nine credits means zero retirement benefits. Forty means you're in.
How Your Benefit Is Calculated
This is where it gets interesting. Social Security doesn't just average your lifetime earnings and hand you a percentage. The formula has three layers, and understanding them helps you spot opportunities to increase your check.
The full mechanics of AIME, bend points, and the PIA formula are covered in our deep dive on how your Social Security benefit is calculated. Here's the overview.
Step 1: Your Top 35 Years
The SSA takes your 35 highest-earning years, adjusts older earnings for wage inflation (a process called "indexing"), and averages them into a monthly figure called your Average Indexed Monthly Earnings (AIME).
Worked only 30 years? Five zeros drag down your average. Worked 40 years? The SSA drops your five lowest years. This is why working a few extra years, even part-time, can bump your benefit if it replaces a zero-earning year.
Step 2: The Benefit Formula (Bend Points)
Your AIME gets run through a progressive formula with two "bend points" that change annually. For 2026, the bend points are $1,286 and $7,749 [4].
The formula pays you:
- 90% of the first $1,286 of your AIME
- 32% of AIME between $1,286 and $7,749
- 15% of AIME above $7,749
This design means lower earners replace a larger share of their pre-retirement income than higher earners. Someone with a $3,000 AIME gets about 55% of their earnings replaced. Someone with a $10,000 AIME gets closer to 36%.
Step 3: Your Primary Insurance Amount (PIA)
The result of that formula is your Primary Insurance Amount. This is the monthly benefit you'd receive if you claim at exactly your full retirement age (FRA). For anyone born in 1960 or later, FRA is 67 [5].
A Quick Example
Meet Diane, age 62 in 2026, born in 1964. After indexing her historical wages and averaging her top 35 years, her AIME is $6,500.
| Bracket | AIME Range | Rate | Monthly Amount |
|---|
| First | $0 to $1,286 | 90% | $1,157.40 |
| Second | $1,286 to $6,500 | 32% | $1,668.48 |
| Third | Above $7,749 | 15% | $0.00 |
| PIA | | | $2,825.80 |
Diane's PIA is $2,825.80. If she waits until 67, that's her monthly check (plus any COLA adjustments between now and then). Claim at 62? She'd get roughly $1,978, a permanent 30% reduction.
Most people don't do this math themselves, and honestly, the formula is ugly enough that you shouldn't have to. The SSA's online estimator at ssa.gov/myaccount projects your benefit based on your actual earnings record. But the estimator assumes you'll keep earning your current salary until you retire. If you plan to stop working early (as many in the FIRE community do), that projection will be too high.
When to Claim: The Big Decision
You can start benefits as early as 62 or as late as 70. The choice permanently changes your monthly check.
| Claiming Age | Effect on Monthly Benefit |
|---|
| 62 | ~30% less than FRA amount |
| 65 | ~13.3% less than FRA amount |
| 67 (FRA) | 100% of PIA |
| 70 | ~24% more than FRA amount |
Every year you delay past FRA, your benefit grows 8% per year (called delayed retirement credits). That's a guaranteed, inflation-adjusted return you won't find anywhere else.
We cover the claiming decision in depth, including breakeven analysis and spousal coordination, in our article on when to claim Social Security for maximum lifetime income. The short version: if you're healthy and can afford to wait, delaying usually wins. The breakeven age is typically around 80. Live past 80, and waiting to 70 pays off handsomely.
But life is messier than math. If you have health concerns, need the income now, or your spouse's benefit depends on your filing date, the answer changes.
The 2026 Numbers You Need
Social Security adjusts several key figures each year. Here's what matters for 2026:
| Item | 2026 Amount |
|---|
| COLA increase | 2.8% [1] |
| Taxable maximum | $184,500 [2] |
| Earnings limit (under FRA) | $24,480 [2] |
| Earnings limit (year of FRA) | $65,160 [2] |
| Cost per work credit | $1,890 [2] |
| Maximum benefit at FRA | $4,152/month [2] |
| Average retired worker benefit | $2,071/month [2] |
The 2.8% COLA means the average retiree's check went up about $54 per month in January. Sounds decent until you factor in Medicare Part B premiums, which rose $17.90 to $202.90. That leaves roughly $36 in real spending power. Medicare often eats a third or more of the COLA, which is why retirees sometimes feel like their "raise" vanished before it arrived.
Working While Collecting
Yes, you can work while receiving Social Security. But before FRA, there's a catch.
In 2026, if you're under full retirement age all year, Social Security withholds $1 for every $2 you earn above $24,480. In the year you reach FRA, the limit jumps to $65,160, and they withhold only $1 for every $3 over [6].
The critical thing most people miss: the withheld money is not lost. At FRA, the SSA recalculates your benefit to give credit for the months they withheld. Your monthly check goes up permanently.
It's a temporary reduction, not a tax. Our article on working while collecting Social Security walks through the full math with examples.
And only wages and self-employment income count. Rental income, 401(k) withdrawals, pensions, investment dividends? None of that triggers the earnings test. Your spouse's income doesn't count either.
Will Social Security Run Out?
This is the question that keeps people up at night. The answer is more nuanced than the headlines suggest.
According to the 2024 Social Security Trustees Report, the combined trust fund is projected to be depleted around 2035. But "depletion" doesn't mean "zero." Even after the trust fund runs out, ongoing payroll taxes would still cover roughly 77% to 80% of scheduled benefits.
So the realistic worst case isn't "no Social Security." It's "about a 20-23% benefit cut" unless Congress acts. And Congress has historically found the political will to fix the program before the deadline, because roughly 75 million voters are collecting checks.
Should you factor this into your planning? Yes, mildly. Building other income sources (a Roth IRA, taxable investments, rental income) gives you a buffer. But planning as if Social Security won't exist at all is probably too conservative for most people.
Taxes on Social Security
Surprise: your Social Security benefits might be taxable.
If your "combined income" (adjusted gross income + nontaxable interest + half your Social Security) exceeds $25,000 as a single filer or $32,000 as a married couple filing jointly, up to 50% of your benefits become taxable. Above $34,000 (single) or $44,000 (joint), up to 85% of benefits are taxable [7].
These thresholds haven't been adjusted for inflation since 1993. That means more retirees get taxed every year. It's one of the stealth tax increases in retirement planning that catches people off guard.
You can use our compound interest calculator to project how your other retirement accounts might grow and how that growth affects your combined income in retirement.
Your Next Move
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Create a my Social Security account at ssa.gov/myaccount. Check your earnings record for errors. The SSA relies on employer reporting, and mistakes happen. Fixing a missing year of earnings could mean hundreds more per month in retirement.
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Run your numbers at multiple claiming ages. The SSA estimator shows benefits at 62, FRA, and 70. Compare the three. If you're married, run the scenarios together, since spousal benefits add another layer.
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Know your FRA. Born in 1960 or later? It's 67. Born between 1943 and 1959? Check the SSA's table, because it shifts by birth year.
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Count your credits if you're under 40. If you've taken extended time away from work, verify you have (or are close to) the 40 credits you need.
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Factor in Medicare. Social Security and Medicare are joined at the hip. Part B premiums come straight out of your check, and higher income can trigger IRMAA surcharges that eat into your benefit further.
References
- Social Security Administration. (2025). Cost-of-Living Adjustment (COLA) Information for 2026. SSA.gov. https://www.ssa.gov/cola/
- Social Security Administration. (2025). 2026 Cost-of-Living Adjustment (COLA) Fact Sheet. SSA.gov. https://www.ssa.gov/news/en/cola/factsheets/2026.html
- Social Security Administration. (2025). Contribution and Benefit Bases, 1937-2026. SSA.gov. https://www.ssa.gov/oact/cola/cbb.html
- Social Security Administration. (2025). Benefit Formula Bend Points. SSA.gov. https://www.ssa.gov/oact/cola/bendpoints.html
- Social Security Administration. (2025). Full Retirement Age. SSA.gov. https://www.ssa.gov/retirement/full-retirement-age
- Social Security Administration. (2025). Retirement Benefits: How Work Affects Your Benefits. SSA.gov. https://www.ssa.gov/benefits/retirement/planner/whileworking.html
- Internal Revenue Service. (2025). Publication 915: Social Security and Equivalent Railroad Retirement Benefits. IRS.gov. https://www.irs.gov/forms-pubs/about-publication-915
