Retirement Accounts, Explained

401(k) basics and the employer match

A 401(k) is a retirement account offered through an employer, letting you contribute directly from your paycheck before you even see the money. Many employers offer a "match" — for example, contributing 50 cents for every dollar you put in, up to a certain percentage of your salary.

An employer match is effectively free money — if you contribute less than the amount needed to get the full match, you're leaving guaranteed, no-risk compensation on the table. It's widely considered the single best "return" available in personal finance, before even discussing market returns.

Traditional vs. Roth

The core difference is when you pay taxes. With a Traditional account, you contribute pre-tax money now (lowering your taxable income today), but you pay taxes when you withdraw in retirement. With a Roth account, you contribute after-tax money now, but withdrawals in retirement — including all the growth — are completely tax-free.

A common rule of thumb: if you expect to be in a lower tax bracket in retirement than you are now, Traditional often makes more sense. If you expect to be in a similar or higher bracket later (common for younger workers early in their careers), Roth often makes more sense.

IRAs — what they are and who they're for

An IRA (Individual Retirement Account) works similarly to a 401(k) but isn't tied to an employer — anyone with earned income can open one directly with a brokerage. IRAs also come in Traditional and Roth flavors, with the same tax logic as above.

IRAs are especially useful for people without access to an employer 401(k), or for those who've already maxed out their 401(k) match and want another tax-advantaged place to keep saving.

Contribution limits and why maxing out matters

Both 401(k)s and IRAs have annual contribution limits set by the IRS, which typically adjust upward over time for inflation. These limits exist because the tax advantages are generous, so the government caps how much any one person can shelter each year.

"Maxing out" — contributing the full allowed amount each year — is a common financial goal precisely because these accounts offer tax benefits unavailable in a regular brokerage account. Every dollar of room left unused in a given year is a tax advantage that can't be recovered later.

Key terms

401(k)

An employer-sponsored retirement account, often with matching contributions.

Employer match

Free money an employer adds when you contribute to a 401(k).

Traditional vs. Roth

Two tax treatments for retirement accounts — pay taxes now (Roth) or later (Traditional).

IRA

An individual retirement account with tax advantages, opened independently of an employer.

Tax-advantaged

An account type offering tax benefits for retirement savings.

Contribution limit

The maximum amount the IRS allows someone to contribute to a retirement account in a year.