What Is a 401(k) and How Does It Work?

A 401(k) is an employer-sponsored retirement savings plan that offers significant tax advantages. It is one of the most powerful tools for retirement saving.

How a 401(k) Works

You elect to have a portion of your pre-tax salary contributed to your 401(k) account. This reduces your taxable income for the year. The money grows tax-deferred until you withdraw it in retirement.

Employer Matching

Many employers offer matching contributions, such as matching 50% of your contributions up to 6% of your salary. This is essentially free money — always contribute enough to get the full match.

Contribution Limits

The IRS sets annual contribution limits. For 2026, employees can contribute up to $23,500 (plus $7,500 catch-up for ages 50+). Total contributions including employer match cannot exceed $70,000.

Maximize Your Match

If your employer offers a 401(k) match, contribute at least enough to receive the full match. It is an immediate 50-100% return on your money.

Frequently Asked Questions

You can leave it with your former employer, roll it into your new employer's plan, roll it into an IRA, or cash out (though cashing out incurs taxes and penalties).
Withdrawals before age 59.5 generally incur a 10% penalty plus income taxes, though there are some exceptions.
Michael Torres
Michael Torres

Michael Torres is a contributor to Investoria Hub, providing educational content to help readers make informed financial decisions.

Last updated: April 28, 2026