The answer to when should you start saving for retirement is simpler than most people expect: today, or as soon as you earn your first paycheck.
The IRS reports that the power of compound interest means a person who starts saving at age 25 needs to set aside significantly less each month than someone who starts at 40 to reach the same retirement goal.
Many workers delay saving because they believe they need a high income first. That belief costs them years of growth they can never recover. This article covers the math behind early saving, what to do if you started late, how much to aim for, and the accounts that make saving easier.
Why Starting Early Matters More Than How Much You Save
Time is the single most powerful variable in retirement planning. When you start early, your contributions have decades to compound, which means the growth on your growth does most of the heavy lifting.
The U.S. Securities and Exchange Commission's compound interest calculator demonstrates that a $5,000 annual contribution starting at age 25 can grow to over $1 million by age 65, assuming a 7% average annual return. Starting that same contribution at age 35 typically yields roughly half that amount.
This gap exists because compound interest is exponential, not linear. The first 10 years of saving build the foundation that the next 30 years multiply.
How to apply this: Open a retirement account this week and set up automatic contributions, even if the amount is small.
The answer to when should you start saving for retirement is now, because compounding turns small early contributions into large sums. Time in the market matters more than timing the market, which is why when should you start saving for retirement should be answered with "today."
Waiting even one decade can cut your final retirement balance nearly in half, so knowing when should you start saving for retirement has real dollar consequences. The cost of delay makes the question of when should you start saving for retirement one of the most expensive questions to answer wrong.
The Real Cost of Waiting to Save
Every year you delay retirement saving has a measurable price tag. Delaying from age 25 to age 35 means the money you would have contributed in those 10 years never gets the chance to compound.
A common scenario illustrates the cost: a 25-year-old who saves $300 monthly at a 7% return accumulates roughly $720,000 by age 65. A 35-year-old saving the same $300 monthly reaches about $340,000. The 10-year delay costs nearly $380,000 in final value.
The gap widens if you also factor in employer matching contributions you miss during the delay years. Many employers match 3% to 6% of salary, which is free money left on the table.
How to apply this: Calculate your own delay cost using a compound interest calculator like Investor.gov's Compound Interest Calculator and let the number motivate immediate action.
Most planners suggest saving 10% to 15% of pre-tax income, and deciding when should you start saving for retirement determines how achievable that percentage feels. Your target savings rate only works if you answer when should you start saving for retirement with urgency rather than hesitation.
Choosing between a 401(k) and an IRA matters less than deciding when should you start saving for retirement and acting on that answer. No matter which account you pick, the question of when should you start saving for retirement should point you to your first available paycheck.
How Much You Should Aim to Save
Financial planners commonly recommend saving 10% to 15% of your pre-tax income for retirement, including any employer match. This guideline comes from decades of retirement planning research, including studies by Fidelity Investments.
If you start at 25, saving 10% may be sufficient. If you start at 35 or later, you may need to save 15% to 20% to catch up. The IRS allows catch-up contributions for workers aged 50 and older, which lets you contribute extra beyond the standard limit.
Your target also depends on your expected retirement lifestyle. Someone planning to travel extensively needs more than someone planning a modest, home-based retirement.
How to apply this: Check your current contribution percentage and increase it by 1% this month. Repeat this increase every six months until you reach 15%.
Catch-up contributions help late starters, but the question of when should you start saving for retirement still teaches that earlier is always better. If you missed the ideal window, asking when should you start saving for retirement today still beats asking it next year.
If you have high-interest student loans, split extra cash between debt and retirement, because when should you start saving for retirement is not a question to postpone until debt is gone. Even small monthly contributions matter, so let when should you start saving for retirement be answered with "while paying down loans."
Where to Put Your Retirement Savings
The right account depends on your employment situation and tax preferences. Employer-sponsored plans like 401(k)s offer high contribution limits and often include matching contributions.
Individual Retirement Accounts (IRAs) work well for those without employer plans or those who want more investment choices. Roth IRAs use after-tax dollars but offer tax-free withdrawals in retirement.
The table below compares the main account types:
| Account Type | 2025 Contribution Limit | Tax Treatment | Best For |
|---|---|---|---|
| 401(k) | $23,500 (under 50) | Pre-tax contributions | Employees with an employer match |
| Roth IRA | $7,000 (under 50) | After-tax, tax-free growth | Early savers in lower tax brackets |
| Traditional IRA | $7,000 (under 50) | Pre-tax, taxed at withdrawal | Those without a workplace plan |
| SEP IRA | Up to 25% of income | Pre-tax | Self-employed and freelancers |
How to apply this: If your employer offers a 401(k) match, contribute at least enough to capture the full match before funding any other account.
Low income is no barrier, because when should you start saving for retirement is best answered with a Roth IRA and the Saver's Credit.
Without a 401(k), an IRA with automatic transfers answers when should you start saving for retirement with your next payday.
What to Do If You Started Late
Starting late does not mean giving up. It means adjusting your strategy. Workers aged 50 and older can make catch-up contributions, which the IRS sets at $7,500 extra for 401(k)s and $1,000 extra for IRAs in 2025.
Late starters should also consider working a few years longer. Delaying retirement from 65 to 67 gives your savings two more years to grow and reduces the number of retirement years you need to fund.
Reducing expenses now frees up more money for savings. A household that cuts $500 in monthly spending and redirects it to retirement can add $6,000 per year to their accounts.
How to apply this: Use a retirement readiness tool like Vanguard's Retirement Income Calculator to see where you stand and what adjustments will move the needle.
It is never too early, because when should you start saving for retirement can even apply to a teenager's first summer job.
For self-employed people, when should you start saving for retirement is immediately, since no employer match exists to help you catch up.
Frequently Asked Questions About when should you start saving for retirement
What if I have student loan debt?
Pay high-interest debt above 7% first, then split extra money between debt payoff and retirement saving. Even $50 monthly into a Roth IRA while paying loans builds the habit. Once loans are gone, redirect the full payment amount to retirement.
Many people with student loans ask when should you start saving for retirement while also managing debt payments.
The answer to when should you start saving for retirement is now, even if you can only afford $50 monthly.
Can I start retirement saving with a low income?
Yes. A Roth IRA works well for low earners because you pay taxes now at a low rate and withdraw tax-free later. Some low-income savers also qualify for the Saver's Credit, which the IRS offers as a tax credit of up to 50% on contributions.
A common question from lower earners is when should you start saving for retirement, and the answer is immediately with a Roth IRA.
What if my employer doesn't offer a 401(k)?
Open an IRA at a brokerage like Fidelity, Vanguard, or Charles Schwab. You can contribute up to $7,000 annually in 2025. Set up automatic transfers from your checking account on payday so saving happens before you can spend the money.
If your job lacks a 401(k), knowing when should you start saving for retirement matters because you must open your own IRA.
Is it ever too early to start saving for retirement?
No. Parents can open custodial Roth IRAs for children with earned income. A teenager who saves $1,000 in a summer job and never adds another dollar could see that grow to over $15,000 by age 65 at 7% annual returns.
Parents often wonder when should you start saving for retirement for their kids, and the answer is as soon as they earn income.
How does when should you start saving for retirement change for self-employed people?
Self-employed workers need to start immediately because they have no employer match. A SEP IRA or Solo 401(k) allows contributions up to 25% of net earnings. Since income can be irregular, set up automatic transfers during high-income months to cover lean periods.
For self-employed individuals, when should you start saving for retirement has a clear answer: today, since no employer match exists.
Conclusion
The question of when should you start saving for retirement has a clear answer: now, regardless of your age or income level. The key takeaways are:
- Time in the market beats timing the market, and compound interest rewards early action more than large contributions
- Delaying 10 years can cut your final retirement balance roughly in half
- Aim for 10% to 15% of income, and capture any employer match first
- Late starters can use catch-up contributions and extended working years to close the gap
Open an account, set up automatic contributions, and let time do the work. Your future self will measure the difference in decades of financial security.
