Saving for retirement can seem complicated when you are just getting started. In the United States, one of the most common retirement savings options offered through employers is a 401(k) plan.
A 401(k) allows eligible employees to save money from their paychecks for retirement. Depending on the plan, employers may also contribute money through matching contributions.
But how does a 401(k) actually work? How much should you contribute? What happens when you change jobs? And when can you withdraw the money?
This beginner-friendly guide explains the basics of 401(k) plans and how they fit into retirement planning.
What Is a 401(k)?
A 401(k) is an employer-sponsored retirement savings plan in the United States.
Employees can generally choose to contribute part of their paycheck to the plan. The money is then invested in options available through the employer's plan.
Depending on the type of 401(k), contributions may receive different tax treatment.
The two common types are:
Traditional 401(k)
Roth 401(k)
Some employers offer both options.
How Does a 401(k) Work?
A typical 401(k) works through payroll deductions.
For example, imagine you earn $60,000 per year and decide to contribute 5% of your salary.
Your employer can deduct the contribution directly from your paycheck and send it to your 401(k) account.
The money can then be invested according to the options you select from the plan.
Over time, your contributions and investment returns can potentially grow your retirement savings.
What Is a Traditional 401(k)?
With a traditional 401(k), employee contributions are generally made with pre-tax dollars.
This means contributions can generally reduce your taxable income for federal income tax purposes in the year they are made.
However, withdrawals from a traditional 401(k) are generally taxable as ordinary income.
What Is a Roth 401(k)?
A Roth 401(k) works differently.
Contributions are made with after-tax dollars, meaning you generally do not receive an upfront federal income tax deduction for the contribution.
However, qualified withdrawals can generally be tax-free if applicable requirements are satisfied.
This can make Roth 401(k) contributions attractive to people who prefer to pay taxes on the money today rather than potentially paying taxes on qualified withdrawals later.
What Is an Employer 401(k) Match?
Some employers offer a 401(k) matching contribution.
This means the employer contributes additional money to your retirement account based on how much you contribute, subject to the plan's rules.
For example, an employer might contribute a certain percentage of your salary when you contribute to the plan.
Why Is Employer Matching Important?
Employer matching can provide an additional source of retirement savings.
If your employer offers a match, understand:
How much the employer matches
How much you need to contribute to receive the full match
Whether there is a vesting schedule
Any limits specified by the plan
Your employer's plan documents will contain the specific rules.
How Much Should You Contribute to a 401(k)?
There is no single percentage that works for everyone.
Your contribution rate can depend on:
Income
Monthly expenses
Debt
Emergency savings
Employer matching
Retirement goals
Age
Expected retirement timeline
A practical starting point is to review your employer's matching policy and consider contributing enough to receive the full match if doing so fits your financial situation.
