
A 401k plan is a type of retirement savings plan that many employers offer to their employees.
The plan allows employees to contribute a portion of their salary to a retirement account on a pre-tax basis, reducing their taxable income.
In 2022, the annual contribution limit for 401k plans is $19,500, and employees 50 and older can contribute an additional $6,500 in catch-up contributions.
Employers often match a portion of their employees' contributions, which can significantly boost the employee's retirement savings.
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Eligibility and Basics
Eligibility defines the criteria for when an employee becomes a participant in the 401(k) plan. You may allow employees to become participants immediately or require them to meet a minimum age or service condition first.
You may also want to keep certain employees out of your 401(k) plan altogether. This is a deliberate decision that can be made based on business goals and employee demographics.
Choosing eligibility terms that are too liberal can increase plan expenses and make day-to-day administration complex, while too strict eligibility can hinder the recruitment of prospective employees.
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Eligibility Basics

You can allow employees to become 401(k) participants immediately, but you may also require them to meet a minimum age or service condition first.
Eligibility requirements can be too liberal, increasing plan expenses and administrative complexity.
You may want to keep certain employees out of your 401(k) plan altogether, depending on your business goals and plan features.
Choosing the right mix of 401(k) features, including employee eligibility, during the plan design process can help a business meet their 401(k) goals.
An experienced 401(k) provider can help walk you through the eligibility decision-making process and ensure it aligns with your business goals.
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What Is a Plan?
A 401(k) plan is a retirement plan that allows employees to put money into a particular account. Contributions to 401(k)s are invested in mutual funds, stock, bonds, money market accounts, and other investment choices as part of a portfolio.
You can choose how your contributions are invested, giving you control over your financial future.
These investments are typically held in a portfolio, which helps to diversify your risk and potentially increase your returns.
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Excluding Employee Groups
Excluding certain groups of employees from your 401(k) plan is a common practice, but be careful with the definition to avoid indirectly referring to age or service.
Employers have discretion in defining the excluded group, but they cannot refer to age or service in the definition. For example, excluding part-time or seasonal workers is not allowed.
Excluding certain groups can cause your 401(k) plan to fail the annual coverage test, which may result in additional costs and administrative burden.
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Excluding Employee Groups
Businesses can exclude certain groups of employees from their 401(k) plan, but be careful with the definition. Employers have discretion in defining the excluded group(s).
You can exclude employees like part-time or seasonal workers, but be aware that referring to age or service in defining the group is impermissible. This is because it sidesteps the minimum age or service requirements.
Excluding certain groups may cause the 401(k) plan to fail the annual coverage test, required by the IRS. This can result in additional costs and administrative burden.
You should work closely with your provider if you're going to exclude employees as a group.
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Part-Time Employees

Congress wants to make it easier for part-time employees to save for retirement by requiring 401(k) plans to cover "long term, part-time" employees.
Beginning in 2024, workers meeting the LTPT employee definition must be allowed to participate in your 401(k) plan. The SECURE and SECURE 2.0 law changes aim to overcome the barrier of long minimum service requirements for part-time employees.
The LTPT employee definition requires employees to work at least 1,000 hours in a one-year period to be eligible for coverage. This change is an effort to increase retirement plan coverage for more employees.
The goal is to have as many people as possible covered by retirement plans, making it easier for part-time employees to save for their future.
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Plan Types and Contributions
There are two main types of 401(k) plans: traditional and Roth 401(k) plans, both of which are defined contribution plans.
Both employees and employers can contribute to the account up to the dollar limits set by the IRS. The maximum amount an employee can contribute to a 401(k) plan is $23,000 for workers under age 50, with an additional $7,500 catch-up contribution for those 50 or older.
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The combined limit for both employee and employer contributions is $69,000 per year for workers under 50, and $76,500 for those 50 or older.
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Traditional
A traditional 401(k) plan lets you reduce your tax burden while saving for retirement.
With a traditional 401(k), employee contributions are deducted from gross income, reducing your taxable income for the year. This can be reported as a tax deduction for that tax year.
Your 401(k) contributions are deducted right from your paycheck and go directly into your account before taxes are withheld. So, if your salary is $50,000 a year and you contribute $3,000 to your 401(k), only $47,000 will be considered compensation for income tax purposes instead of $50,000.
No taxes are due on the money contributed or the investment earnings until you withdraw the money, usually in retirement.
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Plan Contribution Limits
The maximum amount an employee can contribute to a 401(k) plan is $23,000 in 2024, if they're under 50 years old.
If you're 50 or older, you can make an additional catch-up contribution of $7,500. This brings the total to $30,500 for the year.
There's also a limit on total employee and employer contributions for the year, which is $69,000 in 2024 for employees under 50, or $76,500 for employees 50 or older.
It's a good idea to contribute the maximum amount allowed by the plan to take full advantage of the tax-deferral.
The IRS adjusts the contribution limits periodically to account for inflation, so these numbers may change in the future.
You should check with your human resources department for the specific limits and details of your plan.
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Employer Contribution Standard
Employers are not required to make contributions to employees' 401(k) retirement accounts.
Many businesses choose to match 401(k) contributions up to a certain percentage or provide profit-sharing benefits as an added bonus for their workers.
Employer matching actually benefits the company supporting the 401(k).
For example, if an employer offers 5% in match dollars, then employees can contribute 5%, doubling down on contributions to their retirement funds annually.
About four in 10 companies have 401(k) matching contributions of up to 6% of their employees' wages.
Only 10% of companies offer more than that.
Employer matching is a risk-free way to grow your money and not leave part of your compensation on the table.
The combined limit for both employee and employer contributions is $69,000 per year for workers under 50 years old.
If the catch-up contribution for those 50 or older is included, the combined limit is $76,500.
Employers who match employee contributions use various formulas to calculate that match, such as matching $0.50 for every $1 that the employee contributes, up to a certain percentage of salary.
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Employer and Employee Benefits
For workers under 50, the combined limit for both employee and employer contributions is $69,000 per year, while those 50 or older can contribute up to $76,500 with catch-up contributions.
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Employers who match employee contributions use various formulas, such as matching $0.50 for every $1 contributed, up to a certain percentage of salary. About four in 10 companies offer matching contributions of up to 6% of employees' wages.
If you can take advantage of your employer's matching contributions, you should, as it's a risk-free way to grow your money. Meeting the match doesn't necessarily mean sacrificing other financial goals, such as paying down debt or establishing an emergency fund.
Here are some examples of employer matching formulas:
Employers are not required to make contributions to employees' 401(k) retirement accounts, but many choose to match contributions up to a certain percentage or provide profit-sharing benefits. This flexibility makes the overall expenses significantly lower.
Benefits for Employers
Employer matching contributions can be a win-win for both employees and employers. Employers who match employee contributions use various formulas to calculate that match, with some offering up to 6% of employees' wages. In fact, about four in 10 companies have 401(k) matching contributions of up to 6% of their employees' wages.
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Employer matching benefits the company by supporting the 401(k) plan. For example, if an employer offers 5% in match dollars, employees can contribute 5%, doubling down on contributions to their retirement funds annually.
Employers can also take a tax deduction for contributions made to their workers' accounts. This can be a significant benefit, especially for high-earning employees who are typically lower on the percentage match scale.
Here are some benefits of contributing to a 401(k) for employers:
Overall, offering a 401(k) plan can be a valuable benefit for both employers and employees, providing a win-win for everyone involved.
2. Roll IRA
You can roll your 401(k) into an IRA to maintain its tax-advantaged status and avoid immediate taxes. This option also gives you a wider range of investment choices than your employer's plan.
Funds withdrawn from your 401(k) must be rolled over to another retirement account within 60 days to avoid taxes and penalties. It's essential to follow the IRS rules on rollovers to avoid costly mistakes.
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The financial institution receiving the money will typically help with the process to prevent missteps. They can guide you through the rollover process to ensure it's done correctly.
You can leave some of the work to the new plan's administrator if you're not comfortable managing a rollover IRA. This can make the process easier and less stressful for you.
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Plan Requirements and Rules
A 401(k) plan must meet specific requirements to be a qualified plan. The IRS sets annual contribution limitations, with two limits: one for employee contributions and another for overall contributions.
Employees 50 years old or older can make additional "catch-up" contributions up to a maximum amount set by the IRS. This allows them to save more for retirement.
The money in a 401(k) plan accumulates tax-deferred, but withdrawals must fulfill certain criteria, such as retirement, death, disability, or separation from work. If an employee reaches age 59 1/2 or faces hardship, they may withdraw funds.
High-income earners may be restricted from contributing a part of their earnings, and the IRS conducts non-discrimination testing to ensure they're not participating disproportionately more than other workers.
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Service Requirement

An employer can establish a minimum service requirement before employees become participants in a 401(k) plan, with options ranging from no service requirement at all to a requirement of up to one year of service.
The most popular service requirements are 1 year of service, used by 50.33% of small business 401(k) plans, and none at all, used by 21.81%. A service requirement can have a material effect on the plan's cost, ease of administration, and perceived value to existing or prospective employees.
An employer can choose different eligibility requirements for different contribution types, such as allowing employees to be immediately eligible for elective deferrals upon date of hire, but requiring a safe harbor match contribution or employer contributions after a certain age and service requirement.
The counting hours method is a common approach used by businesses with part-time or seasonal employees, allowing them to work a specified number of hours during a 12-month period to become eligible.
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An employer can define a year of service as working a specific number of hours, such as 1,000 hours in a 12-month period, and subsequent eligibility computation periods can commence on the plan year or the employee's anniversary date.
The ability to keep transient employees out can reduce plan costs and administrative burden, making longer service requirements more appealing to businesses with high employee turnover.
By selecting a shorter service requirement or no service requirement at all, businesses can help recruit top employee talent or encourage employees to save for retirement as early as possible.
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Plan Requirements
A 401(k) plan must meet a variety of requirements established by the IRS to be a qualified plan.
The IRS sets annual contribution limitations for 401(k) plans, with two limits: one for employee contributions and the other for overall contributions.
Employees who are 50 years old or older at the end of the year may make additional "catch-up" contributions up to a maximum amount set by the IRS.
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Withdrawals from a 401(k) plan must fulfill certain criteria, such as the employee's retirement, death, disability, or separation from work.
If an employee reaches age 59 1/2 or faces hardship as defined and permitted by the plan, he or she may withdraw funds.
Employees whose yearly income or stake in the company meets a specific level are restricted by the IRS to contributing only a part of their earnings.
A vesting schedule determines when an employee is eligible to receive all or part of the employer contribution.
Employers typically pick a timeframe where 401(k) plans are fully vested – typically one to three years of service.
The Internal Revenue Code also allows for retroactive vesting to date of hire if a company so desires.
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Investing and Earnings
Your 401(k) money is invested according to your choices from the options your employer offers, typically including target-date funds and mutual funds.
These funds are a great option because they contain a mix of stocks, bonds, and other securities that are adjusted as your chosen date approaches.
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A significant benefit of a 401(k) is tax-deferred growth, which means you don't have to pay taxes on investment gains, interest, or dividends until you withdraw money from the account.
The power of compounding occurs when the returns generated by your savings are reinvested into the account, generating returns of their own.
Over many years, the compounded earnings in your 401(k) account can exceed the amount you contributed, making it grow quite substantially by the time you retire.
Target-date funds are adjusted as your chosen date approaches, generally shifting toward more conservative investments as you near retirement.
This is because target-date funds are the way you're least likely to make mistakes, according to Lazaroff.
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Withdrawals and Transfers
You can withdraw money from your 401(k) account, but be aware that you'll face taxes on the amount. You must be at least 59½ or meet specific IRS criteria for a hardship withdrawal to avoid a 10% early withdrawal penalty on top of any income tax you owe.
It's essential to have an emergency fund outside of your 401(k) for unexpected expenses. You don't want to put all your savings into a 401(k) where you can't easily access it if needed.
You can roll over your 401(k) balance to your new employer's plan, maintaining the account's tax-deferred status and avoiding immediate taxes.
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Withdrawals
You can withdraw money from your 401(k) account, but it's not always easy. Once your money goes into a 401(k), it can be difficult to withdraw it without paying taxes on the amount.
You'll face a 10% early withdrawal penalty on top of any income tax you owe if you withdraw before age 59½. The IRS has specific criteria for hardship withdrawals, which can help you avoid the penalty.
You won't owe taxes on withdrawals from a Roth 401(k) if you satisfy specific requirements. However, you'll still face taxes on withdrawals from a traditional 401(k) account.
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You generally have four options when leaving a job and you have a 401(k) plan: rolling over the account to your new employer's plan, leaving the account with your old employer, taking a cash distribution, or transferring the account to an IRA.
Taking early withdrawals from a 401(k) plan is typically not a good idea. You'll face a 10% penalty in addition to any taxes you owe if you withdraw before age 59½, unless your employer allows hardship withdrawals for sudden financial needs.
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What Happens to Retirement Savings When Leaving a Job?
When you leave a job, you'll need to decide what to do with your 401(k) account. You generally have four options.
You can move your 401(k) balance to your new employer's plan, which maintains the account's tax-deferred status and avoids immediate taxes. This is a good idea if you like the investment choices in your new plan.
A 401(k) plan is a workplace retirement plan that allows you to make annual contributions up to a specific limit and invest that money for your later years after your working days are over. The limit is usually set by the government.
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If you leave your 401(k) with your former employer, you can keep the account indefinitely, but you won't be able to contribute further. This is a good option if you're satisfied with your former employer's plan and its investment choices.
In many cases, employers require you to move your 401(k) balance if it's worth less than $5,000. This is to prevent small accounts from being left behind.
Leaving multiple 401(k) accounts behind can be a problem, as you may forget about one or more of them. This can also confuse your heirs, who might not know about the accounts.
There are almost 30 million forgotten or left-behind 401(k) accounts in the U.S., holding about a quarter of Americans' total assets in 401(k) plans. This is a significant problem that can be avoided with careful planning.
Plan Administration and Options
You generally have four options for your 401(k) plan when you leave a company.
You can leave the money in your old employer's 401(k) plan, but you'll likely need to pay a fee to keep it there.
Some employers allow you to take your 401(k) money with you, but you'll need to roll it over into an IRA or another 401(k) plan.
You can also cash out your 401(k) money, but be aware that this may trigger taxes and penalties.
Or, you can convert your 401(k) plan to an annuity, which can provide a steady income stream in retirement.
History and Comparison
401(k) plans have become the most common private employer-sponsored retirement program in the U.S. About a third of working-age Americans have a 401(k).
Initially, 401(k)s were offered by employers to supplement other employee benefits. One in nine working-age Americans have a defined benefit pension plan.
Comparing the two, it's clear that 401(k)s have taken over. U.S. Census data suggests that four in 10 baby boomers and half of millennials have no retirement account at all.
The 401(k) plan was designed to encourage Americans to save for retirement. Among its benefits are tax savings.
If your employer offers both traditional and Roth 401(k) plans, you can split your contributions. You can put some money into a traditional 401(k) and some into a Roth 401(k).
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Key Information and Takeaways
A 401(k) plan is a company-sponsored retirement account in which employees can contribute a percentage of their income. Employers often offer to match at least some of these contributions.
The two basic types of 401(k)s are traditional and Roth, which differ primarily in how they're taxed. Employer contributions can be made to both traditional and Roth 401(k) plans.
The most important thing to know about your 401(k) is to use it. In a perfect world, you put the maximum amount in it, but at a minimum, you should contribute up to the point where your company matches what you put in.
In 2023, Americans saved an average of 7.1% of their salaries in their 401(k)s, which was higher than the overall personal savings rate that year. Less than 12% of working-age Americans were on track in 2023 to max out their contributions.
The 401(k) employee contribution limit for 2024 is $30,500 (including "catch-up" contributions) for those 50 and older and $23,000 for those under 50.
Here are the key 401(k) contribution limits for 2024:
Slavic and Business Information
Slavic countries have a unique approach to retirement planning, with some countries offering state-mandated pension plans.
In Russia, for example, employees contribute 2% of their salary to the pension fund, and employers match this contribution.
The Czech Republic has a mandatory pension system, where employees contribute 6.5% of their salary, and employers contribute 4.5%.
Poland's pension system is also mandatory, with employees contributing 9.5% of their salary, and employers contributing 6%.
Slavic countries also have a strong emphasis on education and workforce development, which can impact 401k participation and contribution rates.
In Poland, for instance, the government has implemented programs to increase financial literacy and retirement savings among employees.
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Frequently Asked Questions
Is $500 a month into a 401k good?
Saving $500 a month into a 401k can add up to $6,000 per year, potentially building a significant retirement nest egg over time. Consistently investing this amount can be a solid step towards securing your financial future.
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