Pension COLA Calculator

Project pension purchasing power with and without COLA adjustments.
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%
%

In 10 Years (with COLA)

$3,656.98

Purchasing Power

$2,721.14

Pension Projections

5 years$3,312.24 nominal / $2,857.17 real
10 years$3,656.98 nominal / $2,721.14 real
15 years$4,037.61 nominal / $2,591.59 real
20 years$4,457.84 nominal / $2,468.20 real

Use the Pension COLA Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

This calculator helps you understand how Cost of Living Adjustments (COLAs) impact your pension's purchasing power over time. Without COLA, inflation erodes your retirement income, meaning your fixed pension will buy less and less each year. For example, if inflation averages 3% annually, a fixed pension in 2026 will have significantly less buying power by 2036.

Our calculator projects your pension's real (inflation-adjusted) value by applying a chosen annual inflation rate. For COLA-adjusted pensions, it increases your initial pension payment by the specified COLA percentage each year. For non-COLA pensions, it maintains the nominal payment but calculates its diminishing real value based on the inflation rate.

Remember that COLA percentages are not guaranteed and can fluctuate yearly, often tied to inflation indices like the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). A common mistake is assuming a fixed COLA will perfectly offset inflation; sometimes COLA adjustments lag behind actual inflation. Also, consider that some pensions may have caps on their COLA percentage.

Example: John's 2026 Pension Scenario

  1. 1 John is retiring in 2026 with an initial annual pension of $30,000. He wants to see the impact of a 2% COLA versus no COLA over 10 years, assuming a 3% average annual inflation rate.
  2. 2 **With COLA:** His pension increases by 2% annually. **Without COLA:** His pension remains $30,000. In both cases, the purchasing power is reduced by 3% annually due to inflation.
  3. 3 **After 10 Years (2036):** * **With 2% COLA:** John's nominal pension will be approximately $36,569. Its real (2026) purchasing power will be around $27,150. * **Without COLA:** John's nominal pension remains $30,000. Its real (2026) purchasing power will have decreased to approximately $22,325.
  4. 4 This example clearly shows that even a modest 2% COLA significantly preserves purchasing power compared to a fixed pension. Without any COLA, John's pension would lose over 25% of its initial buying power over a decade, making it harder to cover rising costs of living in retirement.

Source: IRS · Last updated: April 2026

Frequently Asked Questions

Do all pensions have cost of living adjustments?
No. Federal CSRS and FERS pensions include COLA provisions, and most state government pensions offer some adjustment. Private-sector pensions rarely include automatic COLA, so their purchasing power erodes with inflation over time.
How does a pension without COLA lose value?
At 3% annual inflation, a fixed pension loses about 26% of its purchasing power in 10 years and about 45% in 20 years. Even modest inflation significantly erodes retirement income without adjustments.
Is FERS pension COLA the same as Social Security COLA?
Not exactly. FERS retirees under age 62 generally receive no COLA. After 62, if the CPI increase is 2% or less, FERS COLA matches it. If CPI exceeds 2% but is under 3%, FERS COLA is 2%. If CPI exceeds 3%, FERS COLA is CPI minus one percentage point.

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