When it comes to inflation and retirement income, some of your income keeps up and some doesn't. Social Security has a cost-of-living adjustment built in. Most private pensions don't adjust for inflation, and neither does an annuity with a fixed payment. Your savings cover whatever gap is left, so it's worth knowing your mix long before you retire.
Key takeaways
- Social Security's cost-of-living adjustment (COLA) for 2027 is 3.6 percent, starting with January 2027 payments.
- Most people have their Medicare Part B premium taken out of their Social Security payment, so part of a raise can go to the premium.
- The income levels at which Social Security benefits may become taxable are not indexed for inflation.
- Most private-sector pensions do not provide any inflation adjustment.
Which retirement income keeps up with inflation?
Here's how the most common sources compare.
| Income source | Adjusts for inflation? | How it works |
|---|---|---|
| Social Security | Yes | The COLA is based on the change in the CPI-W, a consumer price index, from one third quarter to the next. |
| Federal pension (CSRS or FERS) | Yes, with limits | FERS adjustments can be smaller than inflation and generally start at age 62, with exceptions such as disability and survivor benefits. |
| State and local government pension | Often, in part | A majority provide adjustments that cover a portion of the rise in prices. |
| Private-sector pension | Usually not | Most do not provide any inflation adjustment. |
| Annuity with a fixed payment | Not on its own | Some contracts offer cost-of-living riders, which add to the cost. |
| TIPS and I bonds | Yes | Both Treasury products adjust for inflation. |
| 401(k), IRA and brokerage savings | Not automatically | There's no built-in raise. Your withdrawals fill the gap. |
A 2024 study from the Center for Retirement Research at Boston College found that retirees are hurt more by inflation than near-retirees because, outside of Social Security, their income is less indexed to prices. In other words, the less of your income that adjusts on its own, the more work your savings have to do.
Does Social Security keep up with inflation?
Social Security gets a yearly cost-of-living adjustment tied to a price index, but the amount that reaches your bank account can rise by less.
The reason is Medicare. Most people have their Part B premium deducted automatically from their Social Security payment. The standard Part B premium was $148.50 a month in 2021 and $202.90 a month in 2026. That's an increase of about 37 percent from 2021 through 2026. Over roughly the same stretch, the COLAs paid from January 2022 through January 2026 added up to about 25 percent. A different starting year would give a different gap.
Taxes are the other piece. Part of your benefit may become taxable once your income passes a set dollar amount, and that amount isn't indexed for inflation.
In my experience, this is why Social Security, Medicare and taxes are worth looking at together. Each one affects how far the others go.
Do pensions and annuities adjust for inflation?
It depends on who's paying. Federal pensions adjust each year under CSRS and FERS rules, though FERS adjustments generally don't start until age 62. A majority of state and local government pensions adjust for part of the rise in prices. Most private-sector pensions do not provide any inflation adjustment.
An annuity with a fixed payment also stays level. Some contracts offer riders with cost-of-living or fixed increases, but they add to the cost.
Here's what a level payment looks like over 25 years.
Hypothetical scenario for illustration. Not a client or a client outcome. Assumes inflation stays at the same rate every year.
| If prices rise each year by | A $2,000 monthly payment in 25 years buys about what this buys today |
|---|---|
| 2 percent | $1,200 |
| 3 percent | $950 |
| 4 percent | $750 |
A level pension still has real value. It's dependable income you don't have to manage. The trade-off is that its buying power shrinks a little every year prices go up.
How much more might you need from savings?
More than you might expect. Savings fill whatever the other income doesn't, so when prices rise, the withdrawal can grow faster than prices do.
Hypothetical scenario for illustration. Not a client or a client outcome. Assumes 3 percent inflation every year and Social Security rising at the same rate.
| Monthly | Today | In 25 years |
|---|---|---|
| Spending | $8,000 | about $16,750 |
| Social Security | $4,000 | about $8,375 |
| Level pension | $2,000 | $2,000 |
| From savings | $2,000 | about $6,375 |
Prices roughly doubled. The amount coming from savings more than tripled.
Two things can shift that math. The first is when you claim Social Security. Benefits are reduced for each month you claim before full retirement age and increased for each month you wait past it, up to age 70. Waiting can mean drawing more from savings in the early years, in exchange for a larger monthly benefit later.
The second is spending. The example assumes spending keeps pace with inflation every year, but a 2014 study by David Blanchett found that retirees' spending, after inflation, fell by about 1 percent a year on average. In my experience, spending is the part of the plan people control most.
What happens to retirement income when a spouse dies?
It can change both your income and your taxes.
A surviving spouse does not collect both Social Security benefits. If you're eligible for a survivor benefit and another benefit, you get the one that's best for you, and the payments aren't added together.
The tax picture changes too. For 2026, the standard deduction for a single taxpayer is $16,100, half of the $32,200 for a married couple filing jointly. In my experience, household costs rarely fall by half, which is why I run the numbers for one person as well as two.
If you'd like to see where your retirement income will come from and whether it covers your needs, the Retirement Readiness Check is free.