Mike Dunning—Getty Images
By iansalisbury
April 20, 2016

This is Day 17 of the #MONEY30, a month-long bootcamp for personal finance novices. You can read more about the challenge here, and follow along with us on Twitter, Instagram, or email us at [email protected].


When you’re still in your 20s or 30s, retirement can seem a long way off. But it’s smart to start saving now, even if you can only sock away a little bit each month. One reason is that with many Americans still aiming to retire in their mid-60s but living into their 90s, you may be looking at funding yourself for 30 years or more. Another is that, because savings tend to compound over time, getting a head start can give you a huge advantage down the road. One recent analysis by JP Morgan shows that saving $5,000 a year for the decade between ages 25 and 35 can actually put you farther ahead than if you saved $5,000 a year for the three decades between ages 35 and 65.

While preparing for a 30-plus-year retirement will never be easy, the good news is Uncle Sam offers plenty of help in the form of tax breaks. What you need to do to get started is understand a few key differences between the main types of retirement savings accounts available to you: the 401(k), the IRA and the Roth IRA. Using these accounts—which let you defer some taxes and avoid others altogether—can be complicated. But putting in a little extra work now can pay off big time down the road. Here’s a primer.


For most people starting out, the 401(K), which get its name from the section of tax code that created it, will be your basic savings tool. The tax benefits of 401(k)s and IRAs are all essentially the same. Uncle Sam allows you to fund these accounts with earnings you haven’t paid income tax on. Those earnings then grow unencumbered by taxes on capital gains and dividends that usually apply to investment profits. But you don’t get off scot-free. You are required to pay up at income tax rates when you finally withdraw and spend your savings in retirement. (While you can tap money early in an emergency, there are hefty potential penalties. You shouldn’t count on doing this.)

What’s distinct about 401(k)s (and their nonprofit world cousins 403(b)s) is that you typically don’t open them on your own: They are set up by your employer’s payroll department. That means you usually get a chance to sign up when you are hired or when you become eligible after working for some period of time. If you have a job and you have not received information about your employer’s 401(k), it might be worth shooting an email to human resources. If you have not taken any action, that doesn’t necessarily mean you have been left behind; in effort to fight retirement inertia, more and more large employers have been enrolling employees automatically unless they affirmatively opt out.

Because 401(k)s are offered through employers, they have some big advantages. First is that 401(k)s are regarded as a job perk. That means you aren’t just saving on your own, there is a good chance your employer plans to kick in some money too. The amount is usually calculated as a percentage of your salary, say 3% or 5%. Some employers contribute money whether you contribute or not. But most take a slightly different approach, making at least part of their contribution in terms of a “match.” In other words, a 3% match would mean your employer matches your 401(k) contributions dollar for dollar up to 3% of your salary, which makes your effective savings rate 6%.

Another big advantage of saving in your employer’s 401(k) is that, like Social Security and your health insurance premiums, 401(k) contributions are taken directly out of your paycheck each month. That means after you specify the amount you want to contribute and choose your investments, you can basically forget about your 401(k), letting your retirement nest egg grow on its own.

Traditional IRA

While most people’s first saving choice will be a 401(k), they are not for everyone. After all, we don’t all work for an employer that will handle the paperwork. And, what happens when you leave your job? Hence the Individual Retirement Account, or IRA, which you can think of as a kind of 401(k) you set up for yourself, at a brokerage like Fidelity, Vanguard or Schwab, or even at the branch of your local bank. The tax benefits are almost identical to a 401(k). You avoid paying income tax on money you invest until you are ready to withdraw it in retirement. Since you are not contributing through your employer’s payroll department, you must typically contribute after-tax dollars, then deduct the amount of the contribution from your taxes to get the difference back from Uncle Sam.

Because 401(k)s are designed to serve as Americans’ primary retirement vehicle, there are limits on who can reap traditional IRA tax benefits. For workers who also have access to a 401(k), the traditional IRA tax deduction phases out for single savers earning $61,000 and married joint filers earning $98,000.

If you are eligible to make tax-advantaged contributions to either a 401(k) or a traditional IRA, there are some subtle differences to consider. With a 401(k), your employer chooses the slate of investments, typically mutual funds. With an IRA you are largely on your own. You can hold mutual funds, stocks, bonds, and even exotic assets like an investment property if you really want. On the other hand, you won’t be getting an employer match, and the maximum you can contribute to an IRA is far lower than with a 401(k): $5,500 a year for those under 50, compared with $18,000 for a 401(k). (Of course, at first you’ll be doing well if you can contribute a few thousand dollars a year, but that difference is something to keep in mind.)

One more thing: While your 401(k)’s match and convenience make it hard to beat as your primary saving vehicle at the start of your career, as you get older there’s a good chance you’ll end up with both a 401(k) and an IRA. Since your 401(K) is tied to your current employer, the system can get more clunky after you’ve switched jobs—then switched again and again. Millions of Americans who don’t contribute to an IRA directly still open one so they can “roll over” old 401(k)s into a single account rather than trying to keep track of half a dozen.

Roth IRA

The 401(k) and the traditional IRA offer the same basic tax break, allowing you to defer income tax on your savings. The Roth IRA allows you to do this backwards. You still pay taxes up front when you make a contribution. But after that, your obligations to Uncle Sam are done. You no longer have to pay income tax on the money you withdraw, and you also skip the capital gains and dividend taxes that dog investors in non-tax-advantaged brokerage accounts. (Like traditional IRAs, there are Roth limits for high earners, although the thresholds are more generous and they aren’t tied to whether or not you have a 401(k).)

Roth IRAs have one clear advantage over 401(k)s and IRAs. As with the other accounts, there is a hefty penalty for tapping your retirement savings early. But because you fund your Roth IRA with after-tax dollars, these accounts allow you to withdraw your original contributions—but not investment profits—without penalty whenever you want. That gives you an important escape hatch if you’d like to save for retirement but have competing savings goals like building an emergency fund or putting together a down payment on a starter home.

The bigger question—whether you ultimately save more in taxes by paying now or paying later—is harder to answer. The tax math hinges on whether you are paying a higher rate now than the one you will pay in retirement. Many financial planners think Roth IRAs are a particularly attractive option for young workers, who can expect to pay higher rates later in life when they are wealthier. But in the end, predicting your future earnings power, not to mention what U.S. tax brackets will be decades hence, means there is still a lot of guesswork.

Not that that should discourage you. While you’re young, the most important thing is that you start saving, helping yourself get ahead of the game. Consider the tax benefits gravy.

— Ian Salisbury

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