Social Security COLA Projection Calculator
Project how annual cost-of-living adjustments grow your Social Security benefit over time, in monthly, annual and cumulative terms.
How it works
Future monthly = benefit × (1 + COLA)^years · Cumulative = Σ over each year of benefit × (1 + COLA)^y × 12
Social Security benefits are adjusted each year by a cost-of-living adjustment (COLA) tied to inflation, which compounds over a long retirement. A modest-looking COLA still lifts the benefit substantially across two or three decades, and the cumulative total shows how much the indexing adds compared with a flat benefit. Because the COLA tracks measured inflation, it protects purchasing power rather than adding real income.
Worked example
A $1,900 monthly benefit growing at a 2.6% COLA reaches 1,900 × 1.026^20 ≈ $3,180 a month after 20 years. Summed year by year, the benefit pays roughly $590,000 in total over that span.
Sources: SSA — Cost-of-Living Adjustment
Frequently asked questions
How is the Social Security COLA set?
The Social Security Administration bases the annual COLA on the change in the CPI-W (a consumer price index) from the third quarter of one year to the next. If prices do not rise, there may be no COLA that year.
Does a COLA increase my real income?
No — a COLA is designed to keep pace with inflation, so it preserves your purchasing power rather than growing it. Your benefit rises in dollars but buys roughly the same amount of goods.
What COLA should I assume?
Recent COLAs have varied from 0% to over 8% depending on inflation. A long-run assumption of 2–3% is common for planning, but you can test higher and lower rates to bracket the range.
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Educational estimate using simplified assumptions — not tax, legal or financial advice. Verify limits and rules with the IRS or a qualified advisor.