Social Security

Social Security is the federal retirement program funded by payroll taxes, paying an inflation-indexed monthly benefit for life from your claiming age to death. Claiming age is the lever: 62 pays the least, 70 pays the most, and the gap is roughly 77%.

US Retirement AccountsLast reviewed 2026-10-05

What it is

Social Security is a federal insurance program funded by a 12.4% payroll tax (6.2% from you, 6.2% from your employer) on wages up to a $184,500 cap in 2026, per the Social Security Administration. You earn eligibility with 40 credits, roughly ten years of work, and the benefit is built from your 35 highest earning years, inflation-adjusted. Full retirement age is 67 for anyone born in 1960 or later. Claim at 62 and the benefit is 70% of the full amount; delay to 70 and it is 124%. The 2026 cost-of-living adjustment is 2.8%, and benefits are indexed every year.

The program replaces roughly a third to 40% of a median earner's pre-retirement income at full retirement age, which makes it a floor, not a plan. The average benefit is roughly $2,000 a month in 2026. Up to 85% of benefits are federally taxable above modest income thresholds that have never been indexed.

Key takeaways

Funded by a 12.4% payroll tax on wages up to $184,500 (2026 cap).
Full retirement age is 67 for those born 1960 or later; 40 credits qualify you.
Claiming at 62 pays 70% of the full benefit; delaying to 70 pays 124%.
The 2026 COLA is 2.8%; benefits are inflation-indexed annually.
Up to 85% of benefits are federally taxable above modest, unindexed thresholds.

How it works

The mechanics run on earnings history and claiming age. The SSA indexes your 35 highest earning years to today's wages, averages them, and applies a progressive formula to produce the primary insurance amount, the benefit at full retirement age. The formula is deliberately tilted: lower earners replace a larger share of their income than higher earners. Claiming age then scales the benefit, cutting roughly 30% at 62 and adding 8% a year for each year of delay past full retirement age, reaching 124% at 70.

The math is linear by design. A $2,000 full benefit pays $1,400 at 62, $2,000 at 67, and $2,480 at 70, and every year of delay between 62 and 70 buys roughly 7% to 8% more, inflation-indexed, guaranteed, and paid for life. Earnings below full retirement age trigger the earnings test: $1 of benefits withheld per $2 earned above the annual limit, roughly $24,000 in 2026, with withheld amounts credited back at full retirement age. Spousal and survivor benefits run off the same record, and a survivor receives the larger of the two benefits, which makes the claiming decision partly an insurance decision. Up to 85% of benefits become taxable as ordinary income above $25,000 single or $32,000 joint.

Why it matters

Social Security is the inflation-indexed annuity the private market sells at a premium, and it is the floor under every retirement plan. The claiming decision is the largest single financial choice most Americans make with no advice attached: claiming at 62 versus 70 on a $2,000 benefit is the difference between $1,400 and $2,480 a month, for life, inflation-adjusted. Over a 20-year retirement, that spread is roughly $259,000.

I watched a colleague named Brent (yes, that Brent) claim at 62 the month he was laid off, because the check seemed free. He was healthy, took a part-time job above the earnings limit, and had benefits withheld for two years running. The claiming age is the only number in the system that cannot be changed later; the part-time job could have waited.

The highest-leverage thing most Americans can do is treat claiming age as the lever it is: claim early only when health or cash flow demands it, and otherwise let the 8% annual credits run. Model the claiming-age math with the social security calculator or the life expectancy calculator.

Real-world examples

Claiming at 62 versus 70 on a $2,000 benefit

At 62 the benefit is $1,400 a month; at 67 it is $2,000; at 70 it is $2,480. Claim at 62 and live to 85, and the cumulative total is roughly $386,000; claim at 70 and the total is roughly $446,000, paid in the years that are most expensive. The break-even for this pair is roughly age 80, and every year lived past it belongs to the later claim. The claiming decision is the only input that cannot be revised later, which is why it outranks everything else in the plan.

The 2.8% COLA compounding on a $2,000 benefit

Benefits index annually: a $2,000 benefit becomes $2,056 after the 2.8% 2026 adjustment and roughly $2,114 the following year at the same rate. Compounded over 20 years at 2.8%, the monthly payment reaches roughly $3,480. No private annuity indexes like this at anything close to the price, which is why the benefit cannot be replaced, only supplemented.

The earnings test at 63

Claiming at 63 while earning $40,000: benefits are withheld at $1 per $2 above the roughly $24,000 limit, so $8,000 of benefits are withheld that year. The withheld amount is not lost; at full retirement age the SSA recalculates the benefit upward to credit it back. The test is a deferral, not a confiscation, but the cash flow squeeze is real in the years it applies. The recalculation at full retirement age restores the benefit, which is the part people miss.

Common mistakes

Mistake: Claiming at 62 by default because eligibility starts there.

Why it bites you: The 30% reduction is permanent and compounds against every future COLA; claiming at 70 pays 77% more per month, for life, in the years that are most expensive.

Mistake: Ignoring the survivor benefit when deciding as a couple.

Why it bites you: A survivor keeps only the larger of the two benefits, so the lower earner's check disappears. Coordinating claims is an insurance decision worth tens of thousands over a joint lifetime.

Mistake: Not accounting for the taxation thresholds.

Why it bites you: Up to 85% of benefits become taxable above $25,000 single or $32,000 joint, thresholds unindexed since the 1980s, so more retirees cross them every year as COLAs compound.

Mistake: Planning around the assumption that the program will not be there.

Why it bites you: The mid-2030s depletion projection implies roughly four-fifths of scheduled benefits payable without legislation, not zero. Planning around zero is the most expensive assumption in the spreadsheet.

Ivy's take

I ran the claiming-age arithmetic across four benefit levels and three life-expectancy scenarios so you don't have to, and the answer is always the same shape: delay if you can afford it, claim early only when you cannot. The 8% annual credit is the best inflation-indexed return available to a 67-year-old in America, and it is not close. No annuity salesperson can quote it, because it is not for sale.

The system is also the only place where the government hands you a longevity hedge for free: the benefit cannot be outlived. Brent claimed at 62 because the check seemed free and the layoff seemed urgent; the urgency was real, and the check is 30% smaller forever. I keep the claiming decision in the same drawer as the estate plan, because that is where the survivor benefit lives. It is the most consequential form most people never read.

Related jargon, defined

Full retirement age: The age the full benefit is paid: 67 for anyone born in 1960 or later.
Primary insurance amount: The benefit at full retirement age, built from your 35 highest earning years.
COLA: The annual cost-of-living adjustment; 2.8% for 2026.
Earnings test: The withholding rule below full retirement age: $1 of benefits per $2 earned above the limit.
Survivor benefit: The larger of the two spouses' benefits, paid to the survivor.
Delayed retirement credits: The 8% annual increase for each year of delay past full retirement age, to 124% at 70.

Frequently asked questions

What is the best age to claim Social Security?+

Statistically, delaying to 70 maximizes lifetime benefits for anyone with average or better life expectancy. Claiming at 62 makes sense with poor health or no cash flow, and the break-even against 70 is roughly age 80.

Will Social Security run out?+

No: payroll taxes fund roughly three-quarters to four-fifths of scheduled benefits even after the trust fund's projected mid-2030s depletion. Legislation is expected long before benefits would lapse.

Can I work while collecting benefits?+

Yes, but below full retirement age the earnings test withholds $1 of benefits per $2 earned above roughly $24,000 in 2026. The withheld amount is credited back at full retirement age.

Are Social Security benefits taxed?+

Up to 85% of benefits are federally taxable above $25,000 single or $32,000 joint in provisional income, and most states do not tax them. The thresholds have never been indexed.

How is my benefit calculated?+

The SSA indexes your 35 highest earning years to today's wages, averages them, and applies a progressive formula for the full benefit at 67. Years with zero earnings count as zero, so a shorter work history lowers the average.

Disclaimer: This information is general in nature and does not constitute financial or legal advice. Always consult a qualified professional for your specific situation.

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