The 2027 Social Security COLA Is 3.6%. Here's What It Really Means for You

If you get Social Security, a raise is on the way. On October 14, the Social Security Administration announced a 3.6% cost-of-living adjustment (COLA) for 2027, which applies to nearly 72 million beneficiaries starting in January.¹ It's the largest increase since 2023, when benefits jumped 8.7%.³

The headline number is simple. What happens next is less so. Part of the raise will likely go to a higher Medicare premium, and for many retirees, a bigger benefit also means a bigger slice of that benefit becomes taxable. Here's what the 2027 COLA means in real dollars, and a few things worth doing before December 31.

The 2027 COLA by the numbers

The SSA estimates the average retired worker's monthly benefit will rise from $2,095 to $2,170 in January. Couples where both spouses collect will see a larger bump, from an average of $3,238 to $3,355 a month.²

People who receive Supplemental Security Income (SSI) get the same 3.6% increase, but theirs arrives a little sooner. Higher SSI payments for about 7.3 million people begin on December 31, 2026. The federal SSI payment standard rises to $1,029 a month for an individual and $1,544 for a couple.^1,2

How the COLA is calculated

The COLA isn't a number Congress votes on each year. By law, it's tied to the Consumer Price Index for Urban Wage Earners and Clerical Workers, known as the CPI-W. The SSA compares the average CPI-W for July, August and September of this year with the same three months of the prior year, and the percentage increase becomes the COLA.^2,4

That design has a quirk retirees should know about. The CPI-W tracks prices paid by working households, which is right there in the name. Retirees often spend a bigger share of their budget on health care and housing, so your personal inflation rate can run higher or lower than the COLA. Treat the 3.6% as a general adjustment rather than a promise that your buying power stays exactly the same.

Medicare will take a piece of the raise

Most retirees on Medicare have their Part B premium deducted straight from their Social Security check. So the number that matters is your raise after the new premium comes out.

The standard Part B premium is $202.90 a month in 2026.⁵ The 2026 Medicare Trustees Report projects it will rise to $209.50 in 2027, an increase of $6.60.⁶ That's only a projection. CMS usually announces the official premium in the fall, and the final number has come in above the trustees' estimate before.

If the projection holds, the average retiree's $75 raise shrinks to about $68 a month once the higher premium is deducted. That's still a meaningful raise. Just don't budget for the full $75.

The tax side most people miss

Whether your benefits are taxable depends on what the IRS calls your "combined" or "provisional" income: your other taxable income, plus any tax-exempt interest, plus half of your Social Security benefits.⁸

• Below $25,000 (single) or $32,000 (married filing jointly), none of your benefits are taxable.
• Above those levels, up to 50% of your benefits can be taxable.
• Above $34,000 (single) or $44,000 (joint), up to 85% can be taxable. That's the ceiling. No one pays tax on more than 85% of their benefits.

Here's the catch. Those thresholds were written into law decades ago and have never been indexed for inflation.⁹ Your benefits get a COLA every year, but the thresholds don't move. Over time, that pulls more retirees into the taxable range and makes a bigger share of their benefits taxable.

Michael Kitces, one of the most widely cited voices in financial planning, has pointed out that while benefits are phasing into taxability, the effect works like a surtax. Every extra dollar of income also makes more of your Social Security taxable, so your effective marginal rate can run well above your bracket. In his example, a household in what was then the 15% bracket faced an effective rate of 22.5% to 27.75%.⁹ Tax-exempt municipal bond interest doesn't get you out of it, either, because it's counted in provisional income.^8,9

Don't forget the senior deduction

There's some good news on the tax front. From 2025 through 2028, taxpayers 65 and older can claim an extra $6,000 deduction, or $12,000 for a married couple if both spouses qualify. It comes on top of the standard deduction seniors already get. It begins to phase out once modified adjusted gross income passes $75,000 for single filers or $150,000 for joint filers.¹⁰ If you're close to those levels, the extra taxable Social Security from the COLA, a Roth conversion, or a large IRA withdrawal can all chip away at it.

If you're still working

Two other numbers change in 2027, and they matter if you're collecting benefits while you still have a paycheck.

The earnings test. If you're under full retirement age for all of 2027, you can earn up to $25,560 before Social Security withholds $1 in benefits for every $2 you earn above the limit. In the year you reach full retirement age, the limit is $67,920, and Social Security withholds $1 for every $3 above it, counting only earnings before the month you reach full retirement age. Once you reach full retirement age, there's no limit at all.²

The taxable maximum. The amount of wages subject to the 6.2% Social Security payroll tax rises from $184,500 to $192,300. If you earn more than that, a bit more of your paycheck will be taxed next year.²

What to do before the year ends

1. Get your COLA notice online. If you have a my Social Security account, your notice will show up online in late November, up to three weeks before the paper version. If you don't have an account, create one and sign up for paperless notices by November 18 to see yours online. Your 2027 Medicare premium will be posted there too.¹
2. Check your tax withholding. You can have federal tax withheld from your benefit at 7%, 10%, 12% or 22% by filing Form W-4V or through your online account. If your benefits are becoming more taxable, adjusting now can keep you from owing in April.^11,12
3. Budget for the new Medicare premium. Plan on the net raise, not the headline. If your income has dropped because you retired, lost a spouse, or had another life-changing event, you can ask Social Security to lower an IRMAA surcharge using Form SSA-44.⁷
4. Revisit any Roth conversion or IRA withdrawal plans. Conversions count in the calendar year you do them. Before you convert, look at how the extra income affects your taxable Social Security, the senior deduction, and future Medicare brackets.
5. Look at your whole income picture, not just the COLA. The COLA is one input. The order you draw from taxable, tax-deferred and Roth accounts often has a bigger effect on your lifetime taxes than the raise itself.

The bottom line

A 3.6% raise is welcome news, especially after a few years of smaller increases. Just plan around the real number. Between a projected Medicare increase and tax thresholds that never adjust, most retirees will keep somewhat less than the headline suggests. The households that come out ahead are usually the ones that look at Social Security, taxes and Medicare together, instead of one at a time.