Starting a retirement fund comes down to three steps: open the right account, put the money in a simple diversified investment, and automate the contributions. The right first account is usually a workplace 401k if your employer matches contributions, or an IRA if it does not. For the investment, a single target-date fund is a sensible default that keeps a beginner from having to pick stocks. The most important factor is not which fund you choose; it is starting early, because time in the market does the heavy lifting. Here is how to begin in 2026.
Step 1: Choose the right account first
The account you open first depends on what you have access to:
- You have a workplace 401k with a match. Start here, and contribute at least enough to get the full match. The match is part of your compensation, and leaving it on the table is the single most common retirement mistake.
- You have no workplace plan, or no match. Open an IRA. It is straightforward to set up at most brokerages, and you control the account directly rather than choosing from a limited menu of plan funds.
- You are self-employed. Look into accounts designed for that, such as a SEP IRA or solo 401k, which allow larger contributions than a standard IRA.
Step 2: Pick a simple investment
Opening the account is not the same as investing. Money that lands in a retirement account often sits in cash until you choose investments, so this step is easy to forget.
| Option |
Who it suits |
Trade-off |
| Target-date fund |
Beginners who want one decision |
Slightly higher fees than building your own |
| Broad index fund (total market or S&P 500) |
People comfortable rebalancing |
You manage the mix yourself |
| Three-fund portfolio |
Hands-on beginners |
Requires periodic rebalancing |
| Robo-advisor portfolio |
Those who want automated management |
Adds an advisory fee on top of fund fees |
For most first-time investors, a target-date fund is the cleanest default: it is diversified across stocks and bonds and automatically shifts toward conservative holdings as the target year approaches. Check the expense ratio before committing, since costs compound over decades. If you want a tax-free option for the account itself, weigh whether a Roth IRA is worth it for your tax situation.
Step 3: Automate and increase over time
- Set a recurring contribution tied to your pay schedule so saving happens without a monthly decision.
- Start with an amount you can sustain even in a lean month, then raise it.
- Increase the rate when your income rises so lifestyle inflation does not absorb every raise.
- Reinvest dividends so growth compounds rather than sitting idle.
- Leave it alone. Checking the balance daily invites panic selling during normal market dips.
What to skip
- Waiting for the "right" amount. A small contribution at 25 can outgrow a much larger one started at 40 because of compounding. Begin with whatever you can.
- Cashing out a 401k when you change jobs. Roll it over instead; cashing out usually triggers taxes and a penalty and erases years of growth.
- Chasing hot individual stocks inside a retirement account. A diversified fund is the boring, reliable choice for money you will not touch for decades.
- Picking the highest-fee fund on the menu by default. Over 30 years, fees quietly subtract a meaningful share of your balance; compare expense ratios.
FAQ
How much should I contribute to retirement?
It depends on your income, expenses, and timeline, so there is no single right number. A common starting point is to capture the full employer match and increase from there. Verify what fits your own budget rather than copying a fixed percentage.
Roth or Traditional for my first account?
Roth contributions are after-tax and grow tax-free; Traditional contributions may reduce taxes now and are taxed on withdrawal. Younger savers in lower brackets often lean Roth, but the right answer depends on your current versus future tax situation.
What if my employer does not offer a 401k?
Open an IRA on your own at a brokerage. It is fully in your control and offers a wider range of low-cost investments than most workplace plans.
Is it too late to start in my 40s or 50s?
No. Catch-up contributions allow people over 50 to contribute more, and any years of growth still help. Starting late is far better than not starting.
Where to go next
See is a 401k worth it in 2026, how to invest in your 401k in 2026, and how to prepare for retirement in 2026.