Cost-of-Living Adjustment (COLA): How It’s Set, Paid, and Taxed

The cost of living adjustment is the annual percentage increase the federal government applies to Social Security and several other benefit programs to keep payments in step with inflation. For 2026, that adjustment is 2.8 percent, which adds roughly $56 to the average monthly retirement check and lifts the average retired worker benefit to about $2,071 starting in January.1Social Security Administration. Social Security Announces 2.8 Percent Benefit Increase for 20262Social Security Administration. What Is the Average Monthly Benefit for a Retired Worker The same percentage flows through VA disability payments, federal retiree annuities (with an exception noted below), and the earnings limits that govern working while drawing benefits.

How the Number Is Set

The Bureau of Labor Statistics publishes a monthly price index called the Consumer Price Index for Urban Wage Earners and Clerical Workers, or CPI-W, which tracks what everyday goods and services cost for working households.3Social Security Administration. Cost-of-Living Adjustments The Social Security Administration averages the CPI-W readings from July, August, and September and compares that three-month average with the same three months from the year before.4Office of the Law Revision Counsel. 42 USC 415 – Computation of Primary Insurance Amount The percentage change becomes the next year’s adjustment.

The 2026 figure came from comparing the third quarter of 2025 with the third quarter of 2024.5Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Nothing about the calculation is discretionary. No one votes on the number; it flows directly from recorded prices. And if prices fall or hold flat, benefits do not go down. The statute triggers an increase only when the comparison produces a positive result, so in a year of deflation your check simply stays where it was.4Office of the Law Revision Counsel. 42 USC 415 – Computation of Primary Insurance Amount

One caveat worth understanding: the CPI-W measures a specific basket. If your own spending leans heavily on prescription drugs or housing, and those categories rose faster than the index, the official adjustment can understate what inflation actually did to your budget.

Which Benefits Move With It

Social Security retirement and disability benefits are the largest group affected, reaching nearly 71 million people.6Social Security Administration. Cost-of-Living Adjustment (COLA) Information Supplemental Security Income uses the same percentage. For 2026, the federal SSI payment rose to $994 a month for an individual and $1,491 for a couple.5Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet

The Department of Veterans Affairs is required by law to match the Social Security percentage for disability compensation and pension payments.7U.S. Department of Veterans Affairs. Veteran Disability Compensation Rates When Social Security goes up 2.8 percent, so do VA disability checks.

Federal retirees are split. Those under the older Civil Service Retirement System (CSRS) receive the full percentage.8U.S. Office of Personnel Management. Cost-of-Living Adjustments (COLA) Retirees under the Federal Employees Retirement System (FERS) get a reduced version: when the COLA falls between 2 and 3 percent, they receive a flat 2 percent, and when it exceeds 3 percent they get the COLA minus one point.9Office of the Law Revision Counsel. 5 USC 8462 – Cost-of-Living Adjustments For 2026, FERS annuitants got 2 percent instead of the full 2.8. The gap compounds year after year.

SNAP food assistance uses its own annual cycle tied to the Thrifty Food Plan rather than the Social Security COLA, so SNAP allotments and Social Security payments do not move by identical percentages even though both adjust each year.10Food and Nutrition Service. SNAP Cost-of-Living Adjustment (COLA) Information

How the Increase Lands on Your Check

The percentage is applied to your Primary Insurance Amount (PIA), which is the base figure Social Security starts from before adjusting for early retirement, delayed retirement credits, or other deductions. After the increase is calculated, the new PIA is rounded down to the nearest dime and the final monthly payment is rounded down to the nearest dollar.11Social Security Administration. Application of COLA to a Retirement Benefit That is why straight-line multiplication of the percentage against your current check sometimes overshoots the actual new amount by a dollar or two.

A personalized COLA notice arrives by mail in December, and most beneficiaries can see it earlier in the Message Center of their my Social Security account starting in late November.12Social Security Administration. How Much Will the COLA Amount Be for 2026 and When Will I Receive It The notice shows your exact new monthly payment. If the number surprises you, the rounding rule is almost always the reason.

Why the Raise Can Feel Smaller Than Expected

Medicare Part B premiums come directly out of Social Security checks, and when the premium rises it eats into the COLA raise. The standard Part B premium for 2026 is $202.90 a month, up from $185.00 in 2025.13Centers for Medicare & Medicaid Services. 2026 Medicare Parts A and B Premiums and Deductibles14Centers for Medicare & Medicaid Services. 2025 Medicare Parts A and B Premiums and Deductibles That $17.90 monthly jump absorbs a meaningful share of a 2.8 percent raise for a typical retiree.

A federal “hold harmless” provision prevents a Part B premium increase from actually pulling your Social Security deposit below what it was the previous month. If your dollar COLA raise is smaller than the premium increase, the premium hike is capped so your check does not shrink.15Office of the Law Revision Counsel. 42 USC 1395r – Amount of Premiums for Individuals Enrolled Under This Part The protection does not cover people newly enrolling in Part B, those paying an income-related premium surcharge, or beneficiaries whose premiums are paid by Medicaid.16Social Security Administration. How the Hold Harmless Provision Protects Your Benefits

How the Raise Can Cost You at Tax Time

The income thresholds that decide whether Social Security benefits are taxable were set by Congress in the 1980s and 1990s and have never been indexed to inflation.17Social Security Administration. Research Note 12 – Taxation of Social Security Benefits Each COLA raises the benefit dollars flowing into the tax formula while the thresholds sit still, so more retirees drift into taxable territory every year.

The IRS calls the relevant figure your “combined income,” which is your adjusted gross income plus tax-exempt interest plus half of your annual Social Security benefits. If that total crosses set lines, part of your benefits becomes taxable:18Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits

  • Single filers: combined income between $25,000 and $34,000 makes up to 50 percent of benefits taxable; above $34,000, up to 85 percent.
  • Married filing jointly: combined income between $32,000 and $44,000 makes up to 50 percent taxable; above $44,000, up to 85 percent.

If you sit near a threshold, even a modest COLA can push you across it.19Internal Revenue Service. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable The time to check is when the December notice arrives, not when the tax return is due.

Earnings Limits If You Work While Collecting

If you take Social Security before full retirement age and keep working, an earnings test reduces your benefit once wages pass an annual cap. The cap moves with the COLA. For 2026:20Social Security Administration. Exempt Amounts Under the Earnings Test

  • Under full retirement age all year: $24,480 annual limit, with $1 withheld for every $2 above.
  • Reaching full retirement age during 2026: $65,160 limit on earnings before the month you hit full retirement age, with $1 withheld for every $3 above.

Once you reach full retirement age, the earnings test disappears, and benefits previously withheld are folded back into a higher monthly payment going forward.21Social Security Administration. Receiving Benefits While Working The withheld money is not gone; it is deferred.

When It’s Announced and When It Shows Up

BLS releases final September CPI-W data in October, and Social Security announces the new COLA soon after. The 2.8 percent figure for 2026 was announced on October 24, 2025, and the next one will be announced in October 2026.22Social Security Administration. Cost-of-Living Adjustment (COLA)

Social Security retirement and disability payments at the new rate begin arriving in January. SSI runs on a slightly different schedule because payments are due on the first of the month, so the January 2026 SSI payment was actually deposited on December 31, 2025.1Social Security Administration. Social Security Announces 2.8 Percent Benefit Increase for 2026 If a scheduled date falls on a weekend or federal holiday, the deposit moves to the preceding business day. For anyone on Medicare, the COLA notice showing the new Part B deduction is available in the my Social Security Message Center in late November, with mailed copies going out through December.23Social Security Administration. Cost-of-Living Adjustment (COLA) Information Reading it when it arrives gives you time to catch errors and adjust the household budget before January.