The 2027 Social Security COLA is 3.6%. Here's what it actually changes

By Tom, CPA · Updated October 26, 2026

TL;DR: SSA set the 2027 COLA at 3.6%, raising the average retired-worker benefit from about $2,095 to $2,170 a month starting January 2027. The wage base rises to $192,300, the earnings test to $25,560 ($67,920 in the FRA year), and Medicare's 2027 premiums are still unannounced as of Oct 26, 2026.

Educational only, not tax, legal, or investment advice. Examples are illustrations, not predictions. Rules and limits change; verify current figures and talk to a qualified professional about your situation.

Your Social Security check just got a raise. Uncle Sam would like a word about it, and so would Medicare, and so would the tax code, which has been standing in the hallway for decades holding the same benefit-taxation thresholds it refuses to update.

On October 14, 2026, the Social Security Administration announced a 3.6% cost-of-living adjustment (COLA) for 2027. The formal notice, with every related dollar figure, ran in the Federal Register on October 26, 2026. This page walks through what changes, who actually gets the raise (spoiler: the answer has a birthday in it), and how much of it survives contact with Medicare premiums and taxes. If you are years away from claiming, keep reading anyway: the same announcement quietly moved the earnings test, the payroll tax cap, and the benefit formula itself.

CPA Warning Label: A 3.6% raise on a check that also pays Medicare and feeds two frozen tax thresholds is not a 3.6% raise in your bank account. Read the notice, not the headline.

The 2027 numbers at a glance

Every figure below comes from SSA's 2027 COLA fact sheet and the Federal Register notice. Nothing here is a projection.

The payroll tax rates themselves do not change: 7.65% for employees (6.2% Social Security plus 1.45% Medicare) and 15.3% for the self-employed, with the Social Security part stopping at the taxable maximum. The 2.8% figure is the COLA that took effect with December 2025 benefits, paid starting January 2026; SSA's COLA history table lists it under 2025 (the year it took effect) and lists this new 3.6% under 2026, which is a fun way to confuse everyone.

How SSA got to 3.6% (the math, minus the drama)

The COLA is not a vibe, a vote, or a negotiation. The Social Security Act ties it to the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). SSA compares the average CPI-W for July, August and September of this year with the same three months of last year.

Per the Federal Register notice, the third-quarter 2025 average was 317.265 and the third-quarter 2026 average was 328.746. Divide one by the other and you get about 1.0362, which rounds to 3.6%. That's it. No committee, no focus group, no one in a back room choosing between 3.5% and 3.7% based on the mood of the room.

There is one safety valve in the law: if the trust fund ratio drops below 20%, the COLA can be limited to wage growth. The notice reports a 2026 OASDI fund ratio of 151.3%, so the valve stayed shut and the full 3.6% applies.

Note what CPI-W is: a measure of prices paid by working households, not retirees. Retirees tend to spend more on health care and housing. Whether that makes the COLA too generous or too stingy for you depends on your actual budget, which is one more reason to track your real spending rather than trusting any index to do it for you.

Who actually gets the raise: the age-62 rule FIRE people miss

Here's the part with the birthday. According to the Federal Register notice, the 3.6% increase applies to workers and family members whose eligibility began before 2027. For retirement benefits, eligibility means reaching age 62 (or becoming disabled, or dying, before 62). For people first eligible after 2026, this particular COLA does not apply.

Two consequences matter for early retirees:

• You don't have to be collecting to get COLAs. Once you have turned 62, every COLA is applied to your underlying benefit amount even if you are waiting until 67 or 70 to claim. Delaying Social Security does not mean missing the raises. Frugal Fran, age 64 and stubbornly unclaimed, gets this 3.6% baked into her future check anyway.
• Before 62, a different engine runs your benefit. Your earnings history is indexed to national wage growth, and the formula's dollar breakpoints rise with wages each year. Lavish Larry, age 48, retired, cannot "lose" this COLA, because it was never his yet. His benefit will be computed with the formula in force when he turns 62.

For a deeper look at when to claim, see Social Security claiming strategies.

What 3.6% looks like on an actual check

SSA estimates the average retired-worker benefit goes from $2,095 to $2,170 a month in January 2027, about $75 more. For an aged couple both receiving benefits, the estimated average goes from $3,238 to $3,355.

Illustration: Assumptions: a retiree whose gross benefit is $2,800 a month in 2026, no other changes. The 3.6% COLA adds about $100.80, for roughly $2,900 a month in 2027, or about $1,210 more over the year. SSA applies its own rounding rules, so the exact figure on the COLA notice may differ by a little. The notice, not this page, is the number to budget from.

That $1,210 is the gross raise. Before Larry books a celebratory cruise, there are three things standing between the gross raise and his bank account: Medicare premiums, income tax, and, if he is still working, the earnings test. Let's go through them in that order, from most predictable to most irritating.

Medicare premiums: the 2027 number is still a blank

Most people on Medicare have Part B premiums deducted from their Social Security payment, so the premium change determines how much of the COLA actually lands. As of October 26, 2026, CMS has not announced the 2027 Part B premium or the 2027 IRMAA brackets. SSA says 2027 premium amounts will show up in the my Social Security Message Center starting in late November, and paper notices go out in December.

For reference, CMS set the 2026 standard Part B premium at $202.90 a month, with income-related surcharges (IRMAA) starting above $109,000 of MAGI for single filers and $218,000 for joint filers. SSA determines 2026 IRMAA from the tax return filed in 2025 for tax year 2024. Following that same pattern, 2027 surcharges will generally be based on 2025 tax returns, which means a large 2025 Roth conversion can show up as a 2027 premium bump.

We won't guess the 2027 premium; projections exist, but they're not official. We'll update the 2027 limits tracker when CMS publishes. Meanwhile, see IRMAA planning for early retirees and 2026 Part B premiums.

Taxes: the thresholds that never got the memo

Here's the sarcastic heart of the matter. Social Security benefits are indexed to inflation every year. The income thresholds that decide whether those benefits are taxable are not. Per IRS Publication 915, up to 50% of benefits can become taxable once provisional income (other income plus half of benefits) passes $25,000 for single filers or $32,000 for joint filers, and up to 85% above $34,000 or $44,000. Those numbers are written into the statute and have no inflation adjustment.

So every COLA pushes a little more of your benefit across lines that stay put. It's like getting a raise in a building where the ceiling lowers itself an inch every year.

Illustration: Assumptions: married couple filing jointly, combined Social Security of $40,000 in 2026, other taxable income of $30,000 that stays flat in 2027, and the full 3.6% COLA raising benefits to $41,440.

• 2026 provisional income: $30,000 + half of $40,000 = $50,000. That's $6,000 over the $44,000 line. Taxable benefits: 85% of $6,000 ($5,100) plus $6,000 = $11,100.
• 2027 provisional income: $30,000 + $20,720 = $50,720, or $6,720 over the line. Taxable benefits: 85% of $6,720 ($5,712) plus $6,000 = $11,712.
• Result: a $1,440 raise in benefits made $612 more of them taxable. In the 12% bracket, that's about $73 of extra federal tax, assuming nothing else changes.

Annoying but not tragic. The bigger danger is stacking: add a Roth conversion or a capital gain on top and the same frozen thresholds can create the infamous tax torpedo. Run your own numbers with the Social Security taxable benefits calculator.

The 2027 earnings test: barista FIRE gets a little more room

If you claim before full retirement age and keep working, SSA temporarily withholds benefits when your earnings pass a limit. For 2027, the limits rise with wages:

• Under full retirement age all year: $25,560. SSA withholds $1 of benefits for every $2 earned above it.
• The year you reach full retirement age: $67,920, counting only earnings in the months before your FRA month. SSA withholds $1 for every $3 above it.
• From the month you reach full retirement age: no limit.

Illustration: Assumptions: a 63-year-old who claimed early and earns $40,000 from a part-time job in 2027. Excess over the limit: $40,000 − $25,560 = $14,440. Withheld: $14,440 ÷ 2 = $7,220 for the year. Those withheld months aren't confiscated: at full retirement age, SSA recalculates the benefit to credit months when benefits were withheld. It's a forced delay, not a fine. Details are in our earnings test guide.

For people still working: the wage base and work credits

The maximum earnings subject to the 6.2% Social Security tax rises to $192,300 in 2027, up from $184,500. An employee earning at or above the cap will pay at most 6.2% × $192,300 = $11,922.60 in Social Security tax in 2027, compared with $11,439.00 in 2026, an extra $483.60. Employers match it. Medicare tax has no cap.

At the other end of the paycheck spectrum, one work credit costs $1,970 of covered earnings in 2027, so $7,880 of earnings anywhere in the year earns the annual maximum of four credits. SSA requires 40 credits to be eligible for retirement benefits. A part-time side gig in early retirement can finish off a short record, though extra credits beyond 40 don't increase your benefit by themselves; your highest 35 years of indexed earnings do. See zero-earning years for why that matters to people who retire at 45.

The benefit formula moved too (bend points)

The quiet number in the notice: the bend points in the primary insurance amount formula. For workers first eligible in 2027 (people turning 62 in 2027), the benefit is 90% of the first $1,340 of average indexed monthly earnings (AIME), plus 32% of AIME between $1,340 and $8,077, plus 15% of AIME above $8,077.

Why an early retiree should care: AIME averages your top 35 years, including zeros. Retire at 45 and your later zero years drag AIME down, but the 90% and 32% brackets mean the first dollars of AIME are worth the most. The formula is quietly progressive, which is why the early years of a FIRE career count for more than people expect. The national average wage index for 2025, which drives these figures, is $72,800.33.

A 2027 COLA to-do list

1. If you receive benefits, create or check your my Social Security account. SSA says you must enroll in paperless notices by November 18, 2026 to see your COLA notice online in late November; otherwise it arrives by mail in December.
2. When the notice arrives, compare the gross benefit, the Medicare deduction and the net deposit. Budget from the net.
3. Recheck federal withholding on benefits (Form W-4V) or quarterly estimates, since taxable benefits may rise.
4. If you're under full retirement age and working, compare expected 2027 earnings against $25,560 or $67,920.
5. If you're doing 2027 Roth conversions, pencil them in with 2026 brackets until the IRS publishes 2027 inflation adjustments. As of October 26, 2026, the IRS newsroom had not released them.

Frugal Fran will do all five before lunch. Lavish Larry will do number two in February, after the cruise deposit clears.