Before you open a brokerage account, before you pick a single fund, there is one financial move that offers a return no market investment can reliably match — and it requires nothing more than filling out a form at work.
Most financial advice starts with the question: “Where should I invest my money?”
This series starts one step earlier. Before you think about brokerages, account types, or fund selection, there is one decision that almost always matters more than any of those. It is not complicated. It does not require market knowledge. It may be the highest-return financial move available to you.
The question is simple: Does your employer offer a retirement plan — and if so, do they match your contributions?
If the answer is yes, capturing that match is the first thing you should do. Full stop. Then we can talk about everything else.
What a 401(k) Is — and Why It Exists
A 401(k) is a retirement savings account tied to your job. The name comes from the section of the U.S. tax code that created it. The basic idea is straightforward: you set aside a portion of each paycheck before you pay income taxes on it, the money goes into an account that you invest in funds of your choosing, and you pay the taxes later when you withdraw the money in retirement.
The tax advantage is real. If you earn $60,000 and contribute $6,000 to a traditional 401(k), the government only taxes you on $54,000 that year. You are essentially delaying the tax bill on that $6,000 — and in the meantime, the full $6,000 is invested and growing.
A 403(b) works the same way. The only difference is who sponsors it. 403(b) plans are offered by public schools, hospitals, universities, nonprofits, and certain government entities. If you work for a hospital, a school district, or a charitable organization, you may have a 403(b) instead of a 401(k). The mechanics are nearly identical.
Both are employer-sponsored retirement plans — meaning they exist because your employer set them up and are tied to your employment. This is important: it distinguishes them from individual retirement accounts (IRAs), which you set up on your own regardless of where you work. We’ll cover IRAs in a later post. For now, we’re talking about what happens at work.
The Employer Match — The Most Important Number on Your Benefits Statement
Here is where it gets consequential.
Many employers that offer a 401(k) also offer to match your contributions — up to a limit. This is called the employer match. It is, quite simply, the most dependable guaranteed return available to most working Americans, and many people fail to capture it fully.
Here is what a typical match looks like.
Your employer offers to match 50% of your contributions, up to 6% of your salary. That means: for every dollar you put in, they put in 50 cents — but only on the first 6% of your salary.
Let’s make that concrete. You earn $60,000 per year.
- 6% of $60,000 = $3,600 from your paycheck
- Your employer adds 50% of that = $1,800 from them
Total going into your retirement account: $5,400, of which $1,800 is money you did not earn, did not work extra hours for, and did not take any market risk to receive.
That $1,800 is a 50% guaranteed return on your $3,600 contribution — before your money earns a single dollar of investment return. No stock, bond, or savings account can reliably guarantee that. It is the best single-year return you are ever likely to see on any money you commit.
Now for the part that makes this so urgent.
If you contribute only 4% of your salary instead of 6%, your employer matches 50% of your 4% — but no more. You leave 2% of their potential match on the table. On a $60,000 salary, that is $600 per year forfeited. Not lost to a bad investment. Not taken by the market. Just not collected — because you didn’t put in enough to unlock it.
Do that for ten years and you’ve left roughly $6,000 in free money unclaimed, before accounting for any growth that money might have earned.
The rule is simple: always contribute at least enough to capture the full employer match. Whatever that percentage is at your workplace, find out, and hit it. Everything else — the investment selection, the brokerage, the broader portfolio — is secondary to this.
A Note on Vesting
One thing worth knowing: some employers require you to work there for a certain number of years before their matched contributions are fully yours to keep. This is called a vesting schedule. If you leave the company before you are fully vested, you may forfeit some or all of the employer’s contributions. Partially vested means you keep a percentage — often increasing each year. Fully vested means it’s all yours.
Check your plan documents to understand your vesting schedule. It doesn’t change the advice — contributing enough to get the match is almost always still the right move — but it’s information you should have.
Where Does the Money Go? Choosing Your Investments
Once you start contributing, you generally get to choose how your money is invested. Your employer’s plan will offer a menu of options — typically a list of mutual funds across several categories.
That menu can be overwhelming. Most plans include dozens of choices: a mix of stock funds, bond funds, target-date funds, and sometimes company stock. For most people starting out, the choice boils down to one question: is there a low-cost index fund on the list?
An index fund is a fund that buys every stock in a specific index — such as the S&P 500, which tracks the 500 largest U.S. companies — in proportion to each company’s size. Instead of trying to pick winners, the fund just owns the market. The costs are extremely low because no one is getting paid to analyze individual stocks.
Look for a fund with the words “index,” “S&P 500,” or “total market” in the name, and check its expense ratio — the annual fee, expressed as a percentage of your investment. A number below 0.10% (that’s ten cents per year on every $100 invested) is excellent. A number above 0.50% is a red flag.
If your plan’s cheapest index fund costs more than your best available option elsewhere, that’s worth knowing — but not worth skipping the employer match to avoid. The match almost always wins.
For the full case behind this approach — why index funds outperform the majority of actively managed funds over time, what compounding costs actually look like in dollars, and how to think about fund selection — we’ve covered it in depth in the Bogle Method series:
That series is the foundation for understanding why a simple, low-cost index fund is almost always the right default choice — inside a 401(k) and outside of it.
Other Plan Types — A Quick Map
Most salaried employees at private companies will encounter a 401(k) or 403(b). But a few other employer-sponsored plan types exist:
- SIMPLE IRA — common at small businesses with fewer than 100 employees. Similar mechanics to a 401(k) but with lower contribution limits.
- SEP IRA — designed for self-employed people and small business owners. Very high contribution limits, but only the employer (which might be you, if you’re self-employed) contributes.
- 457(b) — offered by state and local governments and some nonprofits. Works similarly to a 401(k) but with some different rules around withdrawals.
If you work for a small business or a government employer, you may have one of these instead of a 401(k). The employer match question still applies — check whether your plan offers one and what you need to contribute to capture it.
A Note to Luca and Lili
One of you may one day have a job that offers a 401(k) with an employer match. If that happens, here is the most important thing I can tell you:
That match is part of your compensation. Your employer has promised to give you that money if you put in your share. Not claiming it is the same as leaving part of your paycheck on the table.
I know retirement seems like a long way off when you’re young. Forty years is a long time. But money growing in a retirement account for forty years turns into a number that is hard to believe. The earlier it starts, the bigger the effect.
Start with the match. Every dollar. Don’t leave any of it behind.
— Papa
The One-Sentence Summary
The employer match in a 401(k) or 403(b) is a guaranteed, immediate return on your contributions — the highest reliable return most investors will ever see — and capturing the full match should be your first financial priority before anything else.
This is Part 1 of the Getting Started series. Part 2 covers opening your first brokerage account — the practical steps to get set up as an individual investor outside of work.
Getting Started — series overview
— Jim