How Much Income Will You Need in Retirement?
Most people need somewhere between 70% and 100% of their pre-retirement income to maintain their lifestyle in retirement — not 100% of their current income plus extra, as many assume. That’s because several major expenses typically disappear by the time you retire: payroll taxes, retirement contributions themselves, and often a paid-off mortgage or other debt. This target is usually called your retirement income replacement percentage, and it’s one of the most useful numbers for figuring out whether you’re actually on track.
Most people have never sat down and calculated this number for themselves, and even when they try, their estimates can be far off. That leaves a lot of people facing an uncomfortable choice later in life: retire later than planned, run through savings too quickly, or lean on family for support. None of those outcomes are inevitable — they’re usually the result of not having a clear target to plan around in the first place.
Two common ways to estimate what you’ll need
There are generally two approaches to figuring out how much you need saved for retirement: a multiple of your income, or a percentage of your income.
The multiple-of-income method
This method is fast and simple: take your current income and multiply it by a chosen number, typically somewhere between 10 and 25, depending on which expert or framework you’re following. If your income is $100,000 and you use a multiple of 20, you’d target $2,000,000 saved by retirement.
The appeal is obvious — it’s a five-second calculation. The downside is that it’s a blunt instrument. Because it’s just a flat multiple, it doesn’t account for factors that vary a lot from person to person, like expected investment returns, inflation, or how much you’ll receive from Social Security. Different experts land on different recommended multiples largely because they’re making different assumptions about those underlying factors.
The percentage method (income replacement)
The second approach — and generally the more accurate one — is to estimate a retirement income replacement percentage: the share of your current income you’ll need to replace with savings and other income sources once you stop working. This method takes a bit more effort but tends to be more precise, since it can account for inflation, Social Security, and your specific retirement age and life expectancy.
A common rule of thumb breaks down by desired lifestyle:
- A simpler, more minimal lifestyle than today: around 70%
- A similar lifestyle to today: around 80%
- A more expensive lifestyle than today: around 100% or more
A question that comes up often: if you want a similar lifestyle to today, why would 80% be enough instead of 100%? The answer is that several expenses you have today typically go away in retirement — payroll taxes for Social Security and Medicare, retirement savings contributions themselves, and often a paid-off mortgage, student loans, or other debt. Altogether, those expenses commonly account for around 20% of a working household’s income, which is why replacing roughly 80% tends to support a comparable lifestyle.
If you’re planning to travel extensively or spend more freely in retirement, it makes sense to target a higher replacement percentage. Worth knowing: increased spending in retirement, when it happens, is usually concentrated in the first decade or so after retiring, before mobility naturally declines — so a higher target isn’t necessarily needed for your entire retirement, just the more active early years.
How to estimate your own number
To roughly calculate your retirement savings need using the percentage method, you need three things: your current annual income, your target income replacement percentage based on the lifestyle you want, and a reasonable estimate of how many years you’ll spend in retirement.
Multiply your income by your target percentage to get your annual income need in retirement. Then multiply that by the number of years you expect to be retired to get a rough total savings target. From there, you can layer in more detail — expected Social Security income, pensions, investment returns, and inflation — to refine the estimate further.
One advantage of this method is its flexibility. Want a more modest retirement? Lower the percentage. Planning to retire later? Adjust the number of years. Want to factor in Social Security or a pension? Subtract that expected income from your target before calculating the gap you need to fill with personal savings.
Why this number matters more than a single savings total
Seeing a savings target in the millions can feel abstract and, frankly, discouraging. The income replacement percentage matters because it breaks that big number down into something you can actually track year over year: are you currently on pace toward your target percentage, or is there a gap? That’s a far more actionable question than “do I have a million dollars yet?”
If you’re not currently on track, the replacement percentage also helps clarify what would close the gap — a higher savings rate, a later retirement date, or a more conservative target lifestyle. And if you’re earlier in your career or facing a tighter financial situation right now, it’s worth remembering that your trajectory matters more than your current snapshot. Getting your savings rate moving in the right direction, even gradually, is what actually closes the gap over time.
For most households, retirement income replacement percentage is one of the single most useful numbers for judging retirement readiness — it turns a vague, distant goal into something concrete you can measure your progress against today.