How Much Do I Need to Retire?

By Dan Miller · January 29, 2024 · 13 minute read

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How Much Do I Need to Retire?

The amount you need to retire is a highly personal calculation that weaves in both the lifestyle you envision, the amount you’ve saved, your Social Security benefit, and a number of other factors.

While there are formulas and calculators that can help you determine a basic amount that you need to save for retirement, these are just ballpark numbers. In some cases it can be useful to game out a couple of different scenarios — using different assumptions about where you might live, whether you’ll work part time or travel, and so on.

This can help you, and your spouse or partner, decide on the retirement path that suits you best. And this can help you make the best estimate of how much you need to retire.

This article is part of SoFi’s Retirement Planning Guide, our coverage of retirement readiness and all the steps you need to create a successful retirement plan.

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How Much Do I Need to Save to Retire: Rules of Thumb

There isn’t a single number you need to retire that will work for everyone. As mentioned, every person’s situation is unique and comes with its own complications and assumptions for what retirement might mean.

Fidelity’s research shows that if a 30-year retirement is planned and annual spending is expected to be 4% to 5% of savings, adjusting for inflation, there is about a 90% chance of not running out of money.

The exact percentage of the retirement calculator formula can depend on the age of retirement and life expectancy. That number changes if a person retires at age 60 and plans a 35-year retirement — about 4.3% could be withdrawn per year to retain that 90% likelihood of financial security.

“A good starting point is to focus on maintaining your current lifestyle,” says Brian Walsh, CFP® at SoFi. “In order to do that, you should just focus on saving between 15 and 20 percent of your income towards retirement.”

That said, there are a few rules of thumb you can consider.

Are You Currently Saving Enough?

First, take a good long look at how much you’re putting away for retirement. Have you reached —or come close to — the goal of saving 15% to 20% of your income? Unfortunately, many people have not.

In a 2024 SoFi Retirement Survey, just 16% of respondents say they’re putting 15% or more of their income toward retirement. The majority are contributing much less. Here’s how the numbers break down:

Retirement Contributions

•   48% contribute less than 10% of their income

•   23% contribute less than 5% of their income

•   16% contribute 15% or more of their income

Of those who are contributing 15% or more of their income to retirement savings, 50% have a household income of $100,000 or more. The older they get, the more likely survey respondents are to contribute. While 32% of those aged 25 to 34 put at least 15% of their income toward retirement savings, the number jumps to 60% for those aged 25 to 44.

Source: SoFi Retirement Survey, April 2024

Retirement Savings Targets by Age

retirement savings target by age

If you’re just starting out in life, you might think that with retirement decades away that you don’t have to worry about it. But the sooner you start saving for retirement, the better off you’ll be. Here are a few rough targets for how much you should have saved at certain ages:

By Age…

You should target saving this much

30 1X your salary
40 3X your salary
50 6X your salary
60 8X your salary
67 10X your salary

These should only be considered as very rough guidelines — for more detailed retirement targets, consider working with a financial advisor.

The 80% Rule

One basic guideline is known as the 80% rule, which says you should aim to replace 80% of your pre-retirement income. So, if you earn $100,000, you’ll need about $80,000 per year when you retire.

This is only meant as a guideline, but it has been called into question by some experts as being too high. As the thinking goes, your expenses decline in retirement, largely because you’re no longer saving for retirement, nor are you commuting.

Others have said workers should aim to replace 100% of their pre-retirement income, owing to inflation.

The 4% Rule

example of the 4 percent rule

Another popular rule of thumb is “the 4% rule“, which talks about how much money you’ll need to retire. The 4% rule says that you can take your projected annual retirement expenses and divide by 4% (0.04) to know how much money you’ll need before you can safely retire.

If you project annual expenses of $50,000, you’ll need $1,250,000 (which is $50,000 divided by 0.04). Then each year you could withdraw 4% (indexed for inflation), which would come mostly if not completely from the appreciation of the portfolio.
Source: Fidelity

Since the 4% rule was introduced in 1994, other advisors have said that it is not conservative enough and have suggested 3.33% or 3.5% might be more appropriate.

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Factors That Impact How Much Retirement Savings You’ll Need

factors to consider when saving for retirement

When considering how much you’ll need to retire, here are a few things that you will want to keep in mind:

1. Age You Plan to Retire

In simple terms, your retirement age is the age when you decide to retire. For example, you might set your target retirement date as 62 or 65 or 66 — all of which are related to Social Security benefits in some way.

Social Security has largely shaped how we view retirement age in the U.S. because that monthly payout is what enables the majority of people to leave work. Some 92% of retirees age 65 and older say they depend on Social Security. While retiring at 62 is the earliest age when you can claim Social Security, that’s not your “full retirement age” – 67 is generally considered the full retirement age.

2. Pre-Retirement Income

Some financial planners suggest that you base your retirement projections on your pre-retirement income. You might use 75% or 80% of your current income as a basis for estimating how much money you’ll need as retirement.

For a more detailed look, go through your budget and see how each type of expense will change in retirement. You may need more or less income than you think.

3. Retirement Lifestyle Goals

Another thing to think about is how your lifestyle overall might change in retirement. Consider whether you plan to move or make other big lifestyle changes that can impact both expenses and taxes. While some costs may go down (such as if you pay off the mortgage on your home), others might go up as you change your lifestyle.

As one example, if you want to explore the world or visit grandchildren, your travel budget may drastically increase from pre-retirement levels.

4. Social Security

Social Security benefits can provide a vital supplement to your retirement income and help you get closer to financial security. However, it’s critical to understand that the amount of your benefit will vary depending on your age.

The earliest you can start receiving Social Security Benefits is age 62, but your benefits will be reduced by as much as 30% if you take them that early — and they will not increase as you age.

If you wait until your full retirement age (FRA) you can begin receiving full benefits. Your full retirement age is based on the year you were born. For example, if you were born in 1960 or later, your full retirement age is 67. You can find a detailed chart of retirement ages at

But here is the real Social Security bonus: If you can put off claiming your Social Security benefits until age 70, perhaps by working longer or working part time, the size of your benefits will increase considerably. Typically, for each additional year you wait to claim your benefits up to age 70, your benefits will grow by 8%.

5. Future Retirement Expenses

Creating an estimated budget can help you get a sense of what your retirement expenses might be. For example, you may know how much you’ll pay for things like housing, utilities, and food. But it’s also important to consider any future expenses that could require you to spend more each month in retirement.

Most people aren’t sure how much money they need to retire, according to SoFi’s retirement survey. Just one quarter of respondents say they know the amount they need.

•   41% have a rough estimate of how much they’ll need to retire comfortably

•   25% know how much they’ll need to retire comfortably

•   25% don’t know how much they’ll need to retire comfortably

Of those who don’t know how much they’ll need for retirement, almost half (48%) are aged 45 or older.

Source: SoFi Retirement Survey, April 2024

That’s why it’s so important to start thinking now about the expenses you might face in retirement. The sooner you start planning and saving for these costs, the more time — and ideally, the more money — you may be able to stash away.

For instance, healthcare can be a major cost in retirement, especially if you retire early. At age 65, you will qualify for Medicare, but if you retire before then, you’ll need to make sure that you have a plan for covering healthcare costs in retirement. Even after qualifying for Medicare, you may still have significant health-related costs, depending on your specific medical situation. While Medicare can pay for many health-related issues, it doesn’t pay for all of them. Long-term nursing care is a big exclusion.

Purchasing long-term care insurance or a long-term care annuity can provide you with the necessary funds to cover those expenses, should you need nursing care. But if you don’t have either of those options in place, you’ll need to consider how you’ll fit long-term care costs into your retirement budget.

6. Inflation

Inflation eats away at the value of each individual dollar, including savings and investments, so it’s important to keep in mind the inflation rate for retirement planning. There are several strategies you can use when investing during inflation.

It’s important to keep in mind that the cost of living in the future will be higher than it is today. For example, if rent costs $1,000 today but next year if there’s inflation, that cost could rise to $1,100. Over a decade or more, that price could double or triple.

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Closing the Gap Between Current Savings and Your Goal

If you realize that you have a gap between your current savings and where you think you need to be when you retire, it’s important to make a plan to address the gap. If you choose to do nothing, the gap will only grow wider.

You have three main ways to close the gap — either start saving more of your money or find a way to increase the returns your investments are earning. You can also consider making different choices about the sort of retirement you want.

Retirement Savings Accounts

You have many different ways that you can invest and save for retirement. Many employers have 401(k) accounts that give tax advantages for saving for retirement. On top of that, some employers offer matching funds when you contribute to a 401(k) account.

Another option can be opening an Individual Retirement Account (IRA), which you can set up on your own. There are two main types: a traditional IRA and a Roth IRA.

While both types let you contribute up to $7,000 yearly for 2024 and $6,500 yearly for 2023, with an additional catch-up contribution of $1,000 for those over age 50, one key difference is the way the two accounts are taxed: Traditional IRAs let you deduct your contributions up front and pay taxes on distributions when you retire, whereas Roth IRA contributions are not tax deductible, but you can withdraw money tax-free in retirement.

The Takeaway

It would be nice if there was a simple way to calculate the exact amount you need to retire on. Instead, think of your retirement amount as an ongoing series of calculations that you’ll refine as you get older, and as your thinking gets clearer.

There are some things you can predict, but many that you can’t — including the state of your health (or your spouse’s), the turns the market might take, or a change in priorities. All you can do is start early and save steadily for the retirement you hope to have one day.

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How much money do you need to retire with a $100,000 salary?

In order to determine how much money you need to retire with a certain amount of salary, you’ll need to make a few assumptions. For example, you can estimate that you’ll need 75% of your pre-retirement income after you retire and follow the 4% rule. That would say you’ll need $1,875,000 to be able to retire. If you change your assumptions, it will also change your numbers.

How can I catch up on retirement savings if I’m behind?

There are two main ways to catch up on retirement savings if you’re not meeting the targets for where you want to be. The first is to increase the amount of money you’re saving each month. Upping your contributions can help close your retirement savings gap. The other would be to increase the investment returns that you are earning, though that may also come with increased risk or volatility.

Should I factor in Social Security when determining how much retirement income I’ll need?

It may not be prudent to count on Social Security as a major contributor to your retirement amount. Current projections indicate that the government may not be able to fully fund Social Security payments at some point in the future. It’s difficult if not impossible to predict what the impact might be down the road, especially if it’s still decades until your retirement date.

Can you comfortably retire with $1.5 million?

Deciding whether $1.5 million is enough for you to comfortably retire depends a lot on your standard of living and annual retirement expenses. Using the 4% rule says that a nest egg of $1.5 million would give an annual amount of $60,000. Depending on the cost of living where you live and your own standard of living, that may be enough to retire comfortably.

Am I on track to retire comfortably?

To gauge if you are on track with your retirement savings, you can use a couple of general guidelines. The 80% rule says you will need 80% of your income per year when you retire. Another guideline recommends having 10 times your annual salary saved by the time you’re 67.

But you also need to factor in your personal financial situation, as well as your retirement goals to determine if you can retire comfortably. Depending on your circumstances, you may need to save more or less than the guidelines recommend.

Photo credit: iStock/Yaroslav Astakhov

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