Planning · 8 min read
How Much to Save for Retirement: Rules of Thumb That Work
There is no magic number, but two simple rules and an honest calculator get you surprisingly close.
Updated · Educational content, not financial advice. · Reviewed against our open calculators · Editorial policy
"How much do I need to retire?" has no single answer, because it depends on how you want to live, when you stop working, what Social Security and any pension will pay, and how your investments perform. What you can do is use a few well-known rules of thumb as starting points, then refine them with your own numbers.
This guide is educational and not personalized financial advice. Every figure below is an illustration, not a prediction.
Two questions to answer first
Retirement planning boils down to two numbers.
- How much will you spend each year in retirement? Many people aim to replace a portion of their pre-retirement income, often somewhere around 70% to 80%, because some costs fall (commuting, payroll taxes, saving itself) while others rise (healthcare). Your own budget is a better guide than any percentage. If you are unsure, the budget calculator splits your take-home pay into needs, wants and savings, which is a useful check on how much room you have to save today. Your own spending records are the best guide to what you will need later.
- How large a nest egg supports that spending? This is where the 4% rule comes in.
The 4% rule and the "multiply by 25" shortcut
The 4% rule is a guideline derived from historical market data. It suggests that if you withdraw about 4% of your portfolio in the first year of retirement and then adjust that dollar amount for inflation each year, your money has historically lasted around 30 years. Flip it around and you get a target: multiply your desired annual income from savings by 25.
| Annual income needed from savings | Rough target (25 times) |
|---|---|
| $20,000 | $500,000 |
| $40,000 | $1,000,000 |
| $60,000 | $1,500,000 |
Note that this is income needed from your portfolio. Subtract expected Social Security or pension income first, using the estimate from your official Social Security statement. The rule is a rough guide, not a guarantee. It was built around a 30-year horizon and a mix of stocks and bonds, and it may be too aggressive if you retire very early or the markets perform poorly early in retirement. Many planners suggest a lower starting rate for retirements longer than 30 years.
The 15% savings rate rule
A widely cited rule of thumb (often attributed to Fidelity, among others) says to save about 15% of your gross income for retirement, including any employer match, starting in your 20s or early 30s. It is popular because it is simple and, for many people who start early and earn steady returns, it points toward a comfortable outcome.
It is only a starting point. If you begin late, want to retire early, or expect little Social Security, you may need more. If you have a pension or a very low-cost lifestyle, you may need less.
What consistent saving can add up to
Here is a hypothetical example: monthly contributions for 35 years, growing at 7% a year (an effective annual rate, the same convention as our retirement calculator), with contributions at the end of each month. These figures are in future dollars, before taxes and fees, and real returns will vary. To reproduce them, enter age 30, retirement age 65, $0 saved and the monthly amount in the retirement calculator with a 7% return.
| Monthly saving | Total contributed (35 years) | Approximate balance |
|---|---|---|
| $250 | $105,000 | $428,000 |
| $500 | $210,000 | $856,000 |
| $750 | $315,000 | $1,284,000 |
For context, $750 a month is 15% of a $60,000 salary. But a dollar in 35 years will buy less than a dollar today. At a hypothetical 3% inflation rate, $1,284,000 in 35 years has the buying power of roughly $456,000 today. That is why serious plans use inflation-adjusted figures. The retirement calculator lets you model this with your own age, savings and assumptions (it holds your contributions flat while the income target rises with inflation), and the compound interest calculator shows how growth builds over time. For what a realistic return might be, see compound interest explained.
Checkpoints by age
A commonly cited rule of thumb from Fidelity expresses age-based milestones as a multiple of your salary. Other firms publish different figures and all of them depend on assumptions, so treat them as loose signposts rather than pass or fail marks.
- By 30: about one times your annual salary.
- By 40: about three times.
- By 50: about six times.
- By 60: about eight times.
- By 67: about ten times, or your calculated 25-times-spending target.
If you are behind, you are far from alone, and the fix is usually a mix of saving more, working a bit longer, and trimming planned spending. Each of these has a real effect, and delaying retirement by even a couple of years both adds contributions and shortens the period you need to fund.
If you are starting late or early
Time is the strongest lever. The compound interest explained guide shows how a decade of early saving can rival many more years of later saving. Starting in your 20s means your money has decades to compound, so the required rate is lower. Starting in your 40s or 50s generally means a higher savings rate, and you should also make full use of catch-up provisions for older savers. Check the current rules and limits with the IRS, since they change periodically.
Where to save, in a sensible order
- Employer plan up to the match. If your employer matches contributions, capture the full match first.
- IRA. Decide between traditional and Roth in Roth vs. traditional IRA.
- Back to the employer plan. Increase contributions toward the plan's limit if you can.
- Taxable brokerage account. For additional savings beyond tax-advantaged limits.
Contribution limits change often, so verify the current numbers with the IRS or your plan administrator. If you are new to investing, how to start investing with little money covers account choices and beginner-friendly funds.
What to invest in
For long horizons, most people hold a diversified mix of stocks and bonds, shifting gradually toward bonds and cash as retirement nears. Low-cost index funds, ETFs and target-date funds are common choices; see index funds vs. ETFs. Some people prefer a robo-advisor that handles allocation and rebalancing automatically for a fee. Compare costs, because fees reduce your returns every year.
Do not forget inflation and healthcare. Two of the biggest surprises in retirement are prices rising over decades and healthcare costs before and after Medicare eligibility. Build a cushion for both into your plan.
Ways to close a shortfall
- Increase your savings rate by one percentage point each year, or whenever you get a raise.
- Delay retirement or Social Security to increase your annual benefit.
- Reduce high-fee investments.
- Pay off debt before retirement so fixed costs are lower. See snowball vs. avalanche.
- Consider part-time work in the early years of retirement.
Your retirement savings checklist
- Estimate your yearly retirement spending.
- Subtract expected Social Security or pension income, using official estimates.
- Multiply the remaining amount by 25 for a rough target.
- Run the numbers in the retirement calculator with cautious return assumptions.
- Set a savings rate, aiming for around 15% including any match.
- Capture the full employer match.
- Automate contributions and raise them annually.
- Keep costs low and stay diversified.
- Check current contribution limits before each tax year.
- Revisit the plan yearly, and consider a fee-only planner for complex situations.
None of this substitutes for advice tailored to your finances. Use these rules to get oriented, then adapt.
Sources and further reading
- IRS: Retirement plans: current contribution limits, deduction rules and distribution rules.
- Investor.gov (SEC): beginner investing education, including compound interest and fund basics.
- Federal Reserve: interest rates and the 2% inflation goal.
Frequently asked questions
How much should I have saved by age 40?
One commonly cited rule of thumb (from Fidelity) suggests about three times your annual salary by 40, but sources vary. Treat it as a signpost. Your target depends on your spending, retirement age and other income sources.
Is the 4% rule reliable?
It is a historical guideline, not a guarantee. It assumes about a 30-year retirement and a mix of stocks and bonds. Early retirees or those worried about poor early market returns often choose a lower starting withdrawal rate.
Is $1 million enough to retire?
It depends on your spending and other income. Under the 4% guideline, $1 million supports about $40,000 a year before taxes, plus whatever Social Security or a pension provides. Location, health and lifestyle all matter.
What if I cannot save 15% of my income?
Start with what you can, especially enough to get any employer match, and increase it by a point or two each year. Saving something consistently beats waiting until you can save the ideal amount.