Social Security COLA Set to Climb 3.6%–3.8%; Frozen Tax Thresholds to Hit More Retirees
The 2027 Social Security cost-of-living adjustment is projected between 3.6% and 3.8%, but unchanged tax thresholds from 1984 mean many more retirees will owe federal income tax on benefits for the first time.
A Raise That Comes With a Tax Bill
The 2027 Social Security COLA is projected at 3.6% to 3.8%, but tax thresholds frozen since 1984 mean many retirees will owe tax on benefits for the first time. The Social Security Administration calculates the adjustment from third-quarter inflation data, July through September, and the agency announces the final figure on October 14 after the September Consumer Price Index lands.
The core issue is one of "bracket creep." These thresholds have been frozen for decades, and every time you receive a high COLA, your combined income edges closer to—or further past—these taxation cliffs, a phenomenon known as "bracket creep," slowly converting what is supposed to be an inflation protection mechanism into a tax liability.
The Numbers That Haven't Moved Since 1984
If you are filing as an individual and your combined income exceeds $25,000, up to 50% of your benefits become taxable. If it surpasses $34,000, up to 85% becomes taxable. For married couples filing jointly, those thresholds are $32,000 and $44,000. These exact figures have remained unchanged for over 40 years, despite major inflation.
As a foreigner who may have US Social Security benefits, understand that a 2027 COLA increase could push you over a tax threshold you were never subject to before—and Congress has not indexed these thresholds. If you rely on Social Security income, work with a tax professional now to model your 2027 tax liability and adjust your withholding if needed. The final COLA is announced October 14, 2026.
Sources
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