Social Security 2100 Act Explained: How It Could Increase Retiree Benefits

The Social Security 2100 Act could change how annual cost-of-living adjustments are calculated and potentially give retirees larger benefit increases in some years. However, the proposal has not passed Congress, so it will not automatically change the 2027 Social Security COLA.

The bill was introduced in the House on June 29, 2026, and referred to congressional committees for consideration. It would need to pass both chambers of Congress and be signed by the president before any of its changes could take effect.
 

When will the 2027 COLA be announced?

The Social Security Administration (SSA) is expected to announce the official 2027 COLA in October 2026. The adjustment is calculated using inflation data from the third quarter—July, August and September.

Under current law, Social Security COLAs are based on the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W), which is published by the Bureau of Labor Statistics.

The most recent official increase was a 2.8% COLA for 2026. Any forecasts for 2027 remain estimates until the SSA publishes the final figure.
 

What would the bill change?

The current version of the Social Security 2100 Act would compare the existing CPI-W with the Consumer Price Index for the Elderly (CPI-E). The higher annual percentage would be used for certain COLA calculations during the proposed 2027–2036 period.

CPI-E is designed to reflect the spending patterns of Americans age 62 and older. It gives greater weight to categories such as healthcare, housing and other expenses that may represent a larger share of retirees’ budgets.

Supporters say the change could help Social Security benefits keep pace with the costs seniors actually face. But the bill is still a proposal, and its language could change during the legislative process.
 

How could benefits change?

The proposed legislation includes several changes that could affect retirees and other Social Security beneficiaries:

• Change to the COLA formula: Could produce larger annual increases when senior-focused inflation is higher.

• Across-the-board benefit increase: Could raise monthly payments for current beneficiaries.

• Stronger minimum benefit: Could help certain low-income retirees.

• Caregiver credits: Could improve benefit calculations for people who leave work to provide care.

• Higher taxes on some high earners: Could generate additional Social Security revenue.

• Trust-fund reforms: Could improve the program’s long-term financial position.

The exact impact would depend on the final text approved by lawmakers. A proposal does not guarantee that every provision will become law.
 

How much larger could a COLA be?

A change of just 0.2 percentage points would produce a relatively small monthly difference, but the increase could compound over time as future COLAs are applied to a higher benefit amount.

• $1,000 monthly benefit: About $2 extra per month.

• $1,500 monthly benefit: About $3 extra per month.

• $2,000 monthly benefit: About $4 extra per month.

• $2,500 monthly benefit: About $5 extra per month.

These examples are for illustration only. The actual increase would depend on inflation data and whether CPI-E produces a higher result than CPI-W.

The SSA’s analysis of COLA options estimates that using CPI-E could increase annual COLAs by about 0.15 percentage point on average under one policy option.
 

Would the bill affect Medicare deductions?

A larger Social Security COLA does not necessarily mean the full increase will remain in a beneficiary’s monthly budget. Medicare Part B premiums are often deducted from Social Security payments, and higher premiums could reduce the amount of the COLA that retirees actually keep.

Beneficiaries can review official Medicare costs through Medicare.gov and check their Social Security payment information through their my Social Security account.
 

What happens if Congress does nothing?

If the Social Security 2100 Act does not become law, the SSA will continue using the existing CPI-W formula. The 2027 COLA will be based on the inflation data required under current law.

No application is required for the annual COLA. If Congress changes the formula, the SSA would apply the new rules automatically to eligible beneficiaries.
 

What beneficiaries should do now

Social Security recipients should rely on official government sources and avoid websites that ask for money or personal information to claim a larger COLA.

Beneficiaries can:

• Follow the SSA COLA announcement page.

• Review monthly inflation reports from the Bureau of Labor Statistics.

• Treat 2027 COLA forecasts as estimates until the official announcement.

• Check their my Social Security account for payment details.

• Use the SSA retirement benefit calculator to review estimated benefits.

Bottom line

The Social Security 2100 Act could lead to larger annual benefit increases by giving greater weight to inflation affecting older Americans. The proposal also includes possible benefit increases, stronger minimum benefits, caregiver credits and additional taxes on some high earners.

However, the bill has not been enacted. The official 2027 Social Security COLA will still be calculated under current law and announced by the SSA in October 2026.

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