Tax-Advantaged Accounts Every Saver Should Know About

A 401(k) is an employer-sponsored retirement savings plan. Contributions come out of your paycheck before federal income tax is applied, which lowers your taxable income in the year you contribute. The money then grows tax-deferred, meaning you pay no taxes on investment gains until you withdraw funds in retirement.

Many employers match a portion of what employees contribute, often 50 cents or one dollar for every dollar the employee puts in, up to a set percentage of salary. Skipping contributions means leaving that matching amount on the table, which is effectively a reduction in your total compensation.

The IRS sets annual contribution limits that are adjusted periodically. Withdrawals before age 59.5 generally trigger a 10% early withdrawal penalty on top of ordinary income taxes, with some exceptions for specific hardships. A Roth 401(k) variant, offered by some employers, accepts after-tax contributions and allows tax-free withdrawals in retirement.

An individual retirement account (IRA) is opened by the saver directly with a financial institution, not through an employer. Contributions to a traditional IRA may be tax-deductible depending on your income and whether you or your spouse have access to a workplace retirement plan. Like a 401(k), the money grows tax-deferred and is taxed as ordinary income when withdrawn in retirement.

Annual contribution limits for IRAs are lower than 401(k) limits. The IRS also sets income thresholds that phase out the deductibility of contributions for those covered by a workplace plan. Even when contributions are not deductible, the tax-deferred growth can still be useful, though tracking non-deductible contributions requires care to avoid being taxed twice on the same money.

Required minimum distributions (RMDs) apply starting at age 73 under current rules, meaning you cannot leave the money in the account indefinitely.

A Roth IRA uses after-tax dollars. You receive no deduction when you contribute, but qualified withdrawals in retirement, including all investment growth, are tax-free. That reversal makes the Roth IRA more attractive for people who expect to be in a higher tax bracket in retirement than they are today, including many younger workers early in their careers.

Income limits apply. Above certain thresholds, the ability to contribute to a Roth IRA phases out entirely for single filers and married couples. The limits are adjusted by the IRS periodically. Unlike a traditional IRA, Roth IRAs have no required minimum distributions during the owner's lifetime, giving more flexibility to pass the account to heirs or let it grow longer.

Because contributions (not earnings) can be withdrawn at any time without penalty, some savers treat a Roth IRA as a secondary emergency fund, though drawing from it frequently undermines its long-term purpose.

A health savings account (HSA) is available only to people enrolled in a high-deductible health plan (HDHP), as defined by the IRS. The tax structure is unusual: contributions are made pre-tax (or are deductible if made outside payroll), the money grows tax-free, and withdrawals for qualified medical expenses are also tax-free. That combination is the reason HSAs are often described as triple-tax-advantaged.

Unused funds roll over from year to year with no "use it or lose it" rule, unlike a flexible spending account (FSA). After age 65, funds can be withdrawn for any purpose and are taxed as ordinary income, making the HSA function similarly to a traditional IRA for non-medical costs at that stage.

For those who can afford to pay current medical expenses out of pocket and allow the HSA balance to grow invested, the account can accumulate meaningful tax-free savings for healthcare in retirement, a period when medical costs are generally higher. Contribution limits depend on whether you have individual or family HDHP coverage and are set annually by the IRS.

A 529 plan is a state-sponsored savings plan for education expenses. Contributions are made with after-tax dollars at the federal level, so there is no federal deduction, but many states offer a deduction or credit on state income taxes for contributions to their own plan. The money grows tax-free, and withdrawals for qualified education expenses, including tuition, fees, books, and certain room and board costs at eligible institutions, are also tax-free federally.

Qualified expenses now include K-12 tuition up to $10,000 per year and, under rules enacted in recent years, rollovers to a Roth IRA for the beneficiary under specific conditions. If funds are withdrawn for non-qualified purposes, the earnings portion is subject to income tax plus a 10% penalty.

There are no income limits for contributing, and contribution limits are generous, governed by gift tax rules rather than a fixed annual cap like retirement accounts. The account owner retains control and can change the beneficiary to another qualifying family member if the original beneficiary does not use the funds. For anyone setting savings goals that hold up over time, a 529 with automatic contributions is one of the more straightforward structures to maintain.