Retirement Income: How will I know if I have enough?
The following educational materials are intended for informational purposes only and are not intended to constitute personalized financial advice.
You can spend decades saving for retirement and still reach the finish line with the same nagging question: Is it enough? The answer has less to do with hitting a magic number than with understanding what your savings will need to provide once your regular paycheck stops.
What you actually want to know is simpler: when the paycheck stops, will there be enough money coming in every month to pay for the life I want? That’s a question you can answer. And it turns out the way to get there isn’t a bigger savings target. It’s a short bit of math most people have never been walked through.
Here’s a way to think about it.
Step 1: Figure out what you actually have to cover
Not what you spend today. What you’d still have to pay if everything else went away.
Housing, whether that’s a mortgage or property taxes and upkeep. Utilities, food, transportation, insurance premiums, health care and Medicare costs. These are your essentials: the bills that arrive whether the market is up or down, and whether you feel like spending that month or not.
Then, separately, list what you want to spend: travel, grandkids, the boat, the club, the second home. Those are real and they matter. But they’re flexible in a way the electric bill isn’t, and that distinction is going to do a lot of work in a minute.
One note worth planning for: 41% of retirees say their expenses in retirement turned out higher than they expected when they first retired. It’s worth building in some room.¹
Step 2: Add up the income you’ll get no matter what
Now count the money that shows up every month without you having to do anything, and without depending on how markets performed.
For most people that’s Social Security, and possibly a pension if you’re one of the shrinking number who has one. Social Security is meaningful but it’s rarely the whole answer. For someone with medium career earnings claiming at full retirement age in 2026, it replaces roughly 43% of pre-retirement earnings. Higher earners get proportionally less; the maximum earner replaces about 28%.²
Whatever your figure, the point is the same: think of Social Security as a foundation, not a roof. The Social Security Administration notes in its own literature that most financial planners estimate you’ll need roughly 70% to 80% of your pre-retirement income, from all sources combined, to live comfortably in retirement.²
Step 3: Find your retirement income gap
Take your essentials from Step 1. Subtract your guaranteed income from Step 2.
Whatever’s left over is your retirement income gap, the amount you need your savings to produce every single month, for as long as you live, just to keep the lights on.
This is one of the most useful numbers in your retirement plan, and it can be more useful than your account balance. A $900,000 portfolio with a $600-a-month retirement income gap is in a very different position than a $900,000 portfolio with a $4,000-a-month retirement income gap, even though the balances are identical.
What a retirement income gap might look like
Here’s a simple example of how the numbers can come together:
| Monthly retirement needs | Amount |
|---|---|
| Housing, utilities, food, health care and other essentials | $6,000 |
| Social Security | – $3,400 |
| Pension or other guaranteed income | – $800 |
| Monthly retirement income gap | $1,800 |
In this example, the real planning question isn’t simply “How much have I saved?” It’s “How can I generate the $1,800 a month my savings needs to provide?”
Step 4: Decide how you want that retirement income gap filled
Here’s where the real decision lives. Broadly, there are two ways to cover the retirement income gap:
Withdraw from savings and investments. Flexible, fully accessible, and you keep the upside. But the amount you can safely take depends on how markets behave, especially in your first few years of retirement, and on how long you live.
Convert part of your savings into guaranteed income. Less flexible, but the payment doesn’t move when markets do, and certain types continue for as long as you live.
A holistic plan might consider incorporating a combination of the two approaches. One approach is to cover the essentials with income that can’t be interrupted, and fund the wants from investments , so that a bad market year affects the vacation, not the mortgage.
The longevity part nobody enjoys thinking about
There’s one more reason “enough” is hard to pin to a number: you don’t know how long the money needs to last.
According to the Social Security Administration, a man reaching age 65 in 2026 can expect to live, on average, to about 84.2. A woman reaching 65 can expect to live to about 86.8.³ Those are averages, and life doesn’t always follow the averages. Many people will live considerably longer. A longer life is good news. Your retirement plan should be built to treat it that way.
It’s also worth knowing that the timing of retirement often isn’t fully up to you. In the 2026 Retirement Confidence Survey, 48% of retirees said they retired earlier than planned. Among those who retired early, 76% cited a reason outside their control, most often a health problem or disability.¹ A plan that only works if you make it to 67 at full salary is a fragile plan.
The bottom line
You may have enough if:
Your guaranteed income covers most or all of your essential expenses
Your withdrawal needs are modest relative to your savings
You could absorb a bad market year without changing how you live
You’ve planned to a long life expectancy, not an average one
You may want to take another look if:
Social Security is your only guaranteed income and it doesn’t cover your essentials
Your plan depends on a specific rate of return to be successful
A 20% market decline in your first year of retirement would force you to cut back
A final thought
“Do I have enough?” is a fair question, but it’s asking your savings balance to answer something it can’t. Try reframing it as “is my income going to cover my life?” and the picture gets much clearer and much more fixable, because you can see exactly where the gaps are.
Understanding your retirement income gap is what turns retirement planning from a guessing game into a set of decisions you can actually make. A financial professional can help you run these numbers for your own situation and talk through which tools, including annuities, might fit your plan.
Sources
1. EBRI/Greenwald Research, 2026 Retirement Confidence Survey — Figures 14, 15, and expense expectations: https://www.ebri.org/docs/default-source/rcs/2026-rcs/2026-rcs-release-report.pdf
2. Social Security Administration, Understanding the Benefits (January 2026), Social Security replacement rates and estimated retirement income needs:
https://www.ssa.gov/pubs/EN-05-10024.pdf
3. Social Security Administration, “What Important Things to Consider When Planning for Retirement,” Benefits Planner: Retirement, “What is your life expectancy?” updated for April 1, 2026. https://www.ssa.gov/benefits/retirement/planner/otherthings.html