How the SS Formula Works
SSA averages your 35 highest inflation-adjusted earning years. This gives your AIME. The benefit formula applies three brackets (2024 bend points: $1,174 and $7,078):
- 90% of first $1,174 of AIME
- 32% of AIME between $1,174 and $7,078
- 15% of AIME above $7,078
This progressive formula replaces a higher share of income for lower earners.
Claiming Age Impact
| Claim Age | Benefit % of PIA |
|---|---|
| 62 | 70% (if FRA is 67) |
| 65 | 86.7% |
| 67 (FRA) | 100% |
| 70 | 124% (8% per year after FRA) |
Related Data
Explore retirement planning data across states — pension fund details, retirement readiness scores, and cost comparisons at SSA retirement planner. See salary benchmarks for your occupation at BLS OEWS.
Disclaimer: These are estimates only. Your actual benefit is calculated by SSA based on your complete earnings record. Create a my Social Security account at ssa.gov for your official estimate.
Social Security in Context
The Social Security Administration paid benefits to 67.0 million Americans in 2024, with retired workers averaging $1,907/month ($22,884/year), disabled workers $1,537, and survivors $1,505. The 3.2% COLA for 2024 (down from 8.7% in 2023) was based on the Q3 CPI-W increase. Benefits replace about 40% of pre-retirement income for the median worker and 78% for the lowest-earning quartile.
Claiming age is the single biggest decision. Claiming at 62 reduces the Primary Insurance Amount by roughly 30% permanently; waiting until age 70 increases it by 24-32% above the Full Retirement Age benefit via delayed retirement credits (8%/year). For a PIA of $2,000/month, that range runs from $1,400/month at 62 to $2,480/month at 70 — a $13,000/year lifetime difference.
Social Security's Old-Age and Survivors Insurance trust fund is projected to be depleted in 2033 according to the 2024 Trustees Report, at which point dedicated payroll taxes would cover 79% of scheduled benefits (a 21% across-the-board cut absent legislative action). Combined OASDI trust-fund depletion shifts to 2035. Benefits remain payable indefinitely, but would scale down if Congress doesn't act — a risk factor financial planners now routinely model.
Sources: Social Security Administration, 2024 OASDI Trustees Report, CPI-W
Methodology & Assumptions
This calculator implements standard formulas drawn from primary-source authorities. Values are point-in-time estimates; consult a licensed professional for high-stakes decisions. See the per-input definitions and source citations below.
How this works
Computations are deterministic and run client-side — no inputs leave your
browser. Formulas are derived from
standard published formulas for the calculator's domain (mortgage,
taxes, energy, conversions, etc.). When the underlying agency publishes
updated rates or thresholds we refresh defaults and update the page's
lastmod timestamp.
| Input | Default | Source / authority |
|---|---|---|
| All inputs | Domain-typical defaults | Editorial methodology, CalcMesh 2026 |