The Retirement Income Gap: What it is and Why it Matters
Most people spend 30 or 40 years saving for retirement. They do the right things — contribute to their 401(k), build a nest egg, try to stay disciplined. And then, as retirement gets closer, a question starts to nag at them:
“Is what I’ve saved actually enough?”
For a lot of people, the honest answer is: it depends. And that gap between “what guaranteed income I will have” and “what I’ll actually need” is exactly what financial advisors call the retirement income gap.
In this post, we’ll break down what the retirement income gap is, why it catches people off guard, and — most importantly — what you can do about it.
What Is the Retirement Income Gap?
The retirement income gap is the difference between the income you’ll have in retirement and the income you’ll actually need to live the way you want.
It sounds simple, but it has two sides that both need attention:
- On the income side: Social Security, pensions (if you have one), required minimum distributions from retirement accounts, and any other predictable income sources.
- On the expenses side: your actual cost of living in retirement — which is often higher than people expect, especially in the early years when you’re active and in the later years when healthcare costs rise.
When your expected income falls short of your expected expenses, that’s the gap. And the bigger the gap, the more your investments need to fill it.
Why Does the Retirement Income Gap Happen?
There are a few common reasons this gap catches people by surprise.
Underestimating expenses
Many people assume they’ll spend significantly less in retirement. But research consistently shows that early retirement spending often matches — or exceeds — pre-retirement spending. Travel, hobbies, home projects, and spending more time with family all cost money. Healthcare is the biggest wildcard: Fidelity estimates a 65-year-old couple may need $315,000 or more in today’s dollars just to cover medical expenses in retirement.
Overestimating Social Security
Social Security is valuable, but it was never designed to replace your full income. On average, it replaces about 40% of pre-retirement earnings — and for higher earners, it’s often less. If you’ve been earning well above the average, Social Security alone will cover a relatively small slice of what you’re used to spending.
Ignoring inflation
A retirement that lasts 25 or 30 years is a long time for inflation to work against you. At a modest 3% annual inflation rate, the purchasing power of your money gets cut roughly in half over 24 years. A plan that looks comfortable today may look tight in 15 years if it doesn’t account for rising costs.
Retiring earlier than planned
Not everyone gets to choose their retirement date. Health events, job changes, and caregiving responsibilities push a lot of people into retirement earlier than they expected. An earlier retirement means fewer years of contributions, more years of withdrawals, and potentially claiming Social Security before the optimal time — all of which widen the gap.
How Do You Know If You Have a Gap?
A rough way to check: add up your expected guaranteed income in retirement (Social Security, pension, etc.) and compare it to what you realistically expect to spend each month. If your income sources don’t cover your projected expenses, the difference is your gap.
That gap has to come from somewhere — usually your investment portfolio. Which is why knowing the size of the gap matters so much. A small gap that a portfolio can comfortably fill is manageable. A large gap that depends on strong market returns every year is a risk. A financial plan built around your specific numbers will give you a much clearer picture than any general rule of thumb.
How to Close the Retirement Income Gap
The good news: the sooner you identify a gap, the more options you have to address it. Here are the most common strategies:
Delay Social Security if possible
Every year you wait past age 62 to claim Social Security (up to age 70) increases your benefit by roughly 5–8%. Waiting from 62 to 70 can increase your monthly benefit by as much as 76%. For married couples, coordinating Social Security timing is one of the most impactful income planning decisions available.
Build a withdrawal strategy, not just a savings target
Knowing how much you’ve saved is only half the equation. How and when you draw from different accounts — taxable, tax-deferred, and tax-free — can significantly affect how long your money lasts and how much you keep after taxes.
Keep some growth in your portfolio
Being too conservative too early is its own risk. A 65-year-old may have a 25–30 year investment horizon. Keeping a portion of assets in growth-oriented investments helps your portfolio keep pace with inflation over time.
Work with an advisor to stress-test your plan
Running a retirement projection under different market scenarios, inflation assumptions, and spending levels gives you a real sense of where your plan is resilient — and where it’s fragile. Most people find this exercise more reassuring than they expect.
The Bottom Line
The retirement income gap is one of the most common — and solvable — financial planning challenges. But it gets harder to close the longer it goes unaddressed.
If you’re within 5 to 10 years of retirement, now is the right time to understand your specific numbers and build a plan around them.
Ready to understand your retirement income picture?
At Crest Wealth Advisors, we work with people nearing and in retirement to build income plans that are built to last — through market changes, rising costs, and whatever life brings. Schedule a complimentary consultation HERE to get started.