How Social Security Benefits Are Calculated
Social Security retirement benefits are based on your 35 highest-earning years. The SSA adjusts past earnings for wage inflation, then calculates your Average Indexed Monthly Earnings (AIME). A progressive formula with "bend points" converts AIME into your Primary Insurance Amount (PIA) — the benefit you receive at full retirement age. Claiming early (as early as age 62) permanently reduces your benefit, while delaying past FRA (up to age 70) earns delayed retirement credits of 8% per year.
2026 Benefit Amounts
| Claiming Age | Max Monthly Benefit | Notes |
|---|---|---|
| Age 62 (early) | $2,969 | Permanently reduced by ~30% |
| At full retirement age | $4,152 | SSA fact sheet. Full retirement age varies by birth year. |
| Age 70 (delayed) | $5,181 | SSA example with maximum-taxable earnings since age 22 |
| Average retiree | ~$2,071 | Typical retired worker benefit |
2026 COLA Adjustment
The 2026 cost-of-living adjustment (COLA) is 2.8%, applied to Social Security benefits payable in January 2026. Increased SSI payments began on December 31, 2025. COLA is calculated based on the Consumer Price Index for Urban Wage Earners (CPI-W) from the third quarter of the prior year. This adjustment helps benefits keep pace with inflation, though critics note that CPI-W may not fully reflect the spending patterns of retirees.
Earnings Test Thresholds
If you collect Social Security before reaching full retirement age and continue working, an earnings test may temporarily reduce your benefits:
| Situation | Earnings Limit | Withholding |
|---|---|---|
| Under FRA (entire year) | $24,480/year | $1 withheld per $2 above limit |
| Year you reach FRA | $65,160/year | $1 withheld per $3 above the limit, counting only earnings before the full-retirement-age month |
| Month you reach FRA and after | No limit | No withholding |
Benefits withheld by the earnings test are not lost permanently. Once you reach FRA, the SSA recalculates your benefit upward to account for months benefits were withheld.
Taxation of Social Security Benefits
Your Social Security benefits may be partially taxable depending on your "combined income" (adjusted gross income + nontaxable interest + half of your SS benefits):
| Filing Status | Combined Income | % of Benefits Taxable |
|---|---|---|
| Single | Below $25,000 | 0% |
| Single | $25,000 – $34,000 | Up to 50% |
| Single | Above $34,000 | Up to 85% |
| Married Filing Jointly | Below $32,000 | 0% |
| Married Filing Jointly | $32,000 – $44,000 | Up to 50% |
| Married Filing Jointly | Above $44,000 | Up to 85% |
Note: These thresholds have not been adjusted for inflation since 1993, meaning more retirees pay tax on benefits each year.
Maximum Taxable Earnings (SS Wage Base)
In 2026, the maximum earnings subject to the Social Security payroll tax (6.2% employee / 6.2% employer) is $184,500. Earnings above this amount are not subject to the Social Security portion of FICA, though the 1.45% Medicare tax has no wage cap.
Full Retirement Age by Birth Year
| Birth Year | Full Retirement Age |
|---|---|
| 1943 – 1954 | 66 |
| 1955 | 66 and 2 months |
| 1956 | 66 and 4 months |
| 1957 | 66 and 6 months |
| 1958 | 66 and 8 months |
| 1959 | 66 and 10 months |
| 1960 and later | 67 |
Plan your retirement with our free FIRE calculator
Open FIRE Calculator →Source: SSA 2026 COLA fact sheet (2026 COLA, taxable maximum, and retirement earnings test exempt amounts); age-62 and age-70 maximum-taxable examples from SSA workers with maximum-taxable earnings.
Frequently Asked Questions
What is the 2026 Social Security COLA increase?
The 2026 Social Security cost-of-living adjustment is 2.8%. It applies to Social Security benefits payable in January 2026. Increased SSI payments began December 31, 2025.
What is the maximum Social Security benefit in 2026?
SSA’s 2026 fact sheet lists $4,152 a month at full retirement age, which depends on birth year. In separate examples for January retirees with maximum-taxable earnings since age 22, SSA shows $2,969 at age 62, $4,207 at age 67 and $5,181 at age 70.
How much can I earn while receiving Social Security in 2026?
If you are below full retirement age all year, SSA withholds $1 in benefits per $2 of earnings above $24,480. In the year you reach full retirement age it withholds $1 per $3 above $65,160, counting only earnings before the month you reach that age. The earnings test ends in that month.
Are Social Security benefits taxable in 2026?
Up to 85% of your Social Security benefits may be subject to federal income tax, depending on your combined income (AGI + nontaxable interest + half of SS benefits). For single filers, taxation begins at $25,000 combined income. For married filing jointly, it begins at $32,000. These thresholds are not inflation-indexed.
How this page is reviewed
See methodology, assumptions & sources
| Risk tier | YMYL |
|---|---|
| Author | Calculover Editorial Team Finance and legal education |
| Editorial owner | Calculover Investing & Retirement Desk Investment planning methodology owner |
| Reviewer | Calculover Editorial Review Source and limitation review |
| Last reviewed | 2026-11-06 |
| Last verified | 2026-11-06 |
| Data effective date | 2026-01-01 |
Methodology
This page summarizes source-linked 2026 tax, retirement or benefit rules. Figures and examples use the year and assumptions stated in their tables; they do not determine a reader's complete individual outcome.
Assumptions
- Use the tax year or coverage year stated beside each amount; filing-year and source-publication dates may differ.
- Eligibility, filing status, exceptions and special circumstances must be checked against the linked official source.
Limitations
- 2026 Social Security Benefits, COLA & Earnings Limits does not provide investment, tax, Social Security, ERISA, or fiduciary advice and does not guarantee future balances or income.
- Market volatility, inflation, contribution limits, plan rules, taxes, fees, and withdrawal timing can materially change retirement outcomes.
Sources
- 401(k) and Profit-Sharing Plan Contribution Limits, Internal Revenue Service
- IRA Contribution Limits, Internal Revenue Service
- Retirement Planner, Social Security Administration
Professional guidance: 2026 Social Security Benefits, COLA & Earnings Limits is for retirement education only and is not investment, tax, legal, ERISA, or fiduciary advice. Review decisions with a qualified financial, tax, or plan professional.