401(k) Basics: How Employer Retirement Plans Work

A 401(k) is a retirement savings plan offered by many employers. You choose a portion of each paycheck to contribute, and the money is invested for the long term. Because of tax advantages and, in some cases, employer contributions, these plans are a common cornerstone of retirement saving. Here are the basics, explained simply.

How contributions work

You tell your employer what percentage of your pay to contribute. The money is taken out automatically and deposited into your account. There are usually two tax approaches.

Traditional contributions

Contributions are made before income tax is applied, which lowers your taxable income for the year. You generally pay income tax when you withdraw the money in retirement.

Roth contributions

Some plans offer a Roth option. Contributions are made with after-tax money, and qualified withdrawals in retirement are generally tax-free. Not every plan offers it, so check yours.

The government sets annual contribution limits, which can change. Check the official tax agency site for current numbers.

Employer matching

Many employers match some portion of what you contribute, up to a limit. For instance, a plan may match a share of your contributions up to a certain percentage of your pay. The exact formula varies, so read your plan documents. A match is additional compensation, which is why many people try to contribute enough to receive the full amount if they can.

Vesting

Your own contributions are always yours. Employer contributions may be subject to a vesting schedule, which determines how long you must work before those funds fully belong to you. If you leave before you are fully vested, you may forfeit part of the employer money. Ask your plan administrator for the schedule.

Investment choices

Your 401(k) is an account, and inside it you choose investments from a menu offered by the plan. Common options include:

• Target date funds, which adjust their mix over time as you approach a chosen retirement year.
• Index funds, which aim to track a market segment.
• Bond or stable value funds, which tend to be less volatile.
• Actively managed funds, which may carry higher fees.

Look at fees, often shown as an expense ratio, because they reduce your returns over decades. Consider your time horizon and comfort with market ups and downs. A qualified financial professional can help you choose.

What happens when you change jobs

You usually have several options for an old 401(k): leave it where it is if the plan allows, roll it into your new employer's plan, roll it into an individual retirement account, or cash it out. Cashing out can trigger income tax and possibly an early withdrawal penalty, so it is generally the option to approach with the most caution. Ask for a direct rollover to avoid mistakes.

Withdrawals and loans

Withdrawing before the standard retirement age may result in taxes and an additional penalty, with some exceptions. Some plans allow loans or hardship withdrawals, but these can reduce your long-term savings and may have repayment or tax consequences. Treat retirement money as untouchable whenever you can.

Getting started

1. Find out when you become eligible to join.
2. Enroll and choose a contribution percentage you can sustain.
3. Pick investments that match your timeline, or use the plan's default if it suits you.
4. Increase your contribution over time, such as when you receive a raise.
5. Review your account and beneficiaries annually.

The takeaway: a 401(k) lets you save automatically with tax advantages and possibly employer contributions. Learn your plan's match, vesting, and fees, contribute steadily, and keep your hands off the money until retirement whenever possible.