
A 401(a) defined contribution plan is a type of retirement plan that allows employers to contribute a fixed amount to their employees' retirement accounts.
The plan is designed to provide a predictable retirement income stream for employees.
Contributions to a 401(a) plan are typically made by the employer, and the funds are invested in various assets such as stocks, bonds, and mutual funds.
Employers can choose to match a portion of their employees' contributions, which can help boost the plan's overall value.
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What is a 401(k)?
A 401(k) is a type of retirement plan sponsored by an employer.
Contributions to a 401(k) are usually made by the employee, but in some cases, the employer may also contribute.
These contributions are made with pre-tax dollars, which means they're taken out of your paycheck before taxes are applied.
You can also contribute after-tax dollars to a 401(k), but this is not as common.
The contributions to a 401(k) grow tax-free until you withdraw the funds in retirement, at which point they're taxed as ordinary income.
In some cases, employers may match your contributions to a 401(k), but this typically requires you to make deferrals to a companion plan, such as a 403(b) or 457(b).
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Contributions and Limits
Contributions to a 401(a) plan can be made with pre-tax dollars, reducing your current taxable income. Mandatory contributions are generally made with pre-tax dollars, which reduces your current taxable income.
The annual contribution limit for a defined contribution plan is $66,000 as of 2023. Employer contributions are typically a fixed-dollar or percentage amount.
You always fully own your own contributions and associated earnings, but employer contributions may have a vesting schedule. A vesting schedule determines your "ownership" of those contributions and associated earnings.
Employee contributions are made on an after-tax basis, but employer contributions are made on a pre-tax basis. This means you won't pay taxes on employer contributions until you retire and begin collecting distributions.
You can contribute up to 25% of your compensation to a 401(a) plan on a voluntary basis. Employer matching contributions are also possible, but this varies by employer.
The annual compensation limit is $330,000 as of 2023. It's essential to check the current contribution limits for the calendar year.
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Investment and Management
In a 401(a) defined contribution plan, participants have control over how their account is invested, choosing from options selected by their employer.
Participants can build a diversified portfolio of various funds, which can help manage risk and potentially increase returns.
A typical plan includes a wide range of investment options, from conservative stable-value funds to more aggressive bond and stock funds.
Participants may choose to select a simple yet diversified target-date or target-risk fund, which can provide a hands-off investment approach.
Some plans offer Guided Pathways Advisory Services, which provide specific investment advice to help participants make informed decisions.
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Withdrawal and Borrowing
You can withdraw money from a 401(a) plan, but the options are limited and vary by plan. Some plans allow you to withdraw voluntary, after-tax contributions at any time.
If you're still working for your employer, you may be able to withdraw money after reaching a certain age, such as 59½, 70½, or the plan's normal retirement age. Any in-service distributions made after age 59½ would not be subject to penalty.
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You can also borrow money from your 401(a) plan, if the terms of the plan allow it. This can be a good option for unexpected expenses or to make a down payment on a home.
Required minimum distributions (RMDs) apply to 401(a) plans starting at age 73, and can incur up to a 25% penalty if not taken. However, if you're still working for your employer after the RMD start age, you don't have to begin taking RMDs from the plan until you retire.
Employees contribute to their 401(a) plans with pre-tax dollars, reducing their overall taxable income. They don't have to pay taxes on these funds until they retire and begin collecting distributions.
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Plan Administration
The University of Colorado's 401(a) plan requires employees to contribute 5% of their salary, and the university contributes 10%. This is an example of how some employers contribute to their employees' retirement plans.
Plan administration can be handled by a third-party provider, which can offer various services. These services may include plan document services, recordkeeping, investment-related services, employee education, communication, and enrollment.
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Some of the specific services that a third-party provider may offer include plan documents, restatements, amendments, Summary Plan Descriptions, and Summaries of Material Modification. They may also handle tasks such as processing new participant enrollment, maintaining plan and individual account records, and executing participant-initiated investment transactions.
Here are some examples of the services that a third-party provider may offer:
- Plan document services
- Recordkeeping and other administrative services
- Investment-related services
- Employee education, communication and enrollment
Rollovers
Rollovers can be a valuable tool for managing your retirement savings. You can roll over funds from your 401(a) plan into a 457 plan.
If you're looking to roll over funds, you have options. You can roll over funds into an IRA.
One thing to keep in mind is that you can also roll over funds into other 401(a) plans.
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Employer
An employer's contributions to a 401(a) plan are typically a fixed-dollar or percentage amount. They may also elect to match the employee's contribution, or offer a match into a 401(a) based upon what a participant contributes to a 457(b).
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Employers that contribute to a 401(a) plan can help attract and retain quality employees. This is a significant benefit as it allows the employer to build a strong team.
Employers can choose to make contributions on a pre-tax basis, which helps increase the employee's retirement readiness. Any earnings on these contributions also grow on a tax-deferred basis.
A vesting schedule may apply to an employer's contributions, determining the employee's ownership of those contributions and associated earnings. The vesting schedule also determines how much of the account may be paid to the employee when they separate from service.
Here are some benefits of employer contributions:
- Helps attract and retain quality employees
- Helps employees build retirement security
Employers may combine a 401(a) plan with another type of retirement plan, like a 403(b) or 457(b), to provide employees with more savings options. This can allow employees to save the maximum amount in those accounts while still receiving employer contributions.
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Nondiscrimination Testing
Nondiscrimination testing is an essential aspect of plan administration to ensure fairness in employer-sponsored retirement plans.
Nondiscrimination testing, or NDT, helps prevent highly compensated participants from receiving favorable treatment over others.
This provision promotes financial equity in the workplace by preventing discriminatory practices.
401(a) programs are subject to NDT requirements, which is a specific type of tax-favored benefit plan.
Nondiscrimination testing helps ensure that employer-sponsored retirement plans are administered fairly to all employees at any given company.
This provision prevents highly compensated participants from receiving favorable treatment over other people.
Survivor Benefits
Designating beneficiaries can help ensure assets are paid per a participant's wishes, avoid the potential costs and delays of probate, and allow non-spouse beneficiaries to receive additional tax benefits.
Some plans require that a spouse be the beneficiary for 100% of the account funds, but account holders can designate an alternative beneficiary as long as the spouse formally waives this right.
Designating a beneficiary is a crucial step in planning for the future, as it ensures that assets are distributed according to one's wishes.
Non-spouse beneficiaries can receive additional tax benefits, but this requires proper beneficiary designation.
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Plan Types and Comparison
A 401(a) plan can be offered by all employers, including governmental employers, whereas a 401(k) plan can be offered by all employers, including governmental employers whose plan was established before May 6, 1986.
Both types of plans allow employees to participate, and employers can make contributions. However, 401(k) plans allow participants to make contributions on a pre-tax basis, whereas 401(a) plans may allow participants to make contributions on an after-tax basis, unless they work for a governmental employer.
Here's a comparison of 401(a) and 401(k) plans in a table:
403(b)
A 403(b) plan is a type of retirement plan offered by certain organizations, including nonprofit 501(c)(3) organizations, like universities, public schools, and churches.
You can participate in a 403(b) plan if you're an employee of the organization, and you can make contributions on a pre-tax basis – some employers even let you contribute Roth or after-tax dollars.
The contribution limit for a 403(b) plan is the lesser of $70,000 (for 2025) or your compensation for the year, including amounts you contribute on a pre-tax or Roth basis (up to $23,500), amounts you contribute on an after-tax basis, and any amount your employer makes on your behalf.
Catch-up contributions above the contribution limit are allowed in a 403(b) plan, up to $7,500 for participants who are at least age 50 at any time during the year.
Matching contributions are also allowed in a 403(b) plan, and a vesting schedule can be included.
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Vs. 401(k)
If you're considering a 401(a) plan, you'll find that it's often used by governmental employers, whereas private sector companies tend to opt for 401(k) plans.
One key difference between the two is how contributions are made. In a 401(a) plan, employees can contribute on an after-tax basis, unless they work for a governmental employer. In contrast, 401(k) plans allow employees to contribute pre-tax dollars, and some employers even offer Roth or after-tax contribution options.
The contribution limits for 401(a) plans are based on the lesser of $70,000 (for 2025) or your compensation for the year, including after-tax contributions and employer contributions. 401(k) plans, on the other hand, have a similar limit, but also allow for catch-up contributions above the limit for participants who are at least 50 years old.
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Here's a comparison of 401(a) and 401(k) plans in a nutshell:
Overall, the choice between a 401(a) and 401(k) plan will depend on your individual circumstances and the specific options offered by your employer.
Benefits and Requirements
A 401(a) defined contribution plan offers several benefits to employees and employers alike. It allows employees to contribute a portion of their salary to a retirement account on a pre-tax basis, reducing their taxable income.
Contributions are made by the employee and may be matched by the employer, with some plans offering a higher match for higher contributions. This can result in significant savings over time.
Employees can choose from a range of investment options, often including a mix of stocks, bonds, and mutual funds. This allows them to tailor their portfolio to their individual risk tolerance and financial goals.
Employers can also benefit from a 401(a) plan, as it can help them attract and retain top talent. A well-designed plan can be a valuable recruitment tool, especially for young professionals.
Employers are required to provide a minimum level of benefits, including a vesting schedule, to ensure that employees have a stake in the plan. This typically requires employers to match a percentage of employee contributions.
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Plan Example and Rules
A 401(a) plan can be a bit complex, but let's break it down. An employer can choose to limit 401(a) participation to certain categories of employees.
The total 401(a) plan contributions from both the employer and employee are limited to $66,000 in 2023, up from $61,000 in 2022.
Contributions can be made on a pre-tax or post-tax basis, depending on how the employer structures the plan. Voluntary employee contributions are capped at 25% of the worker's income, and only the first $330,000 of income can be considered for the purposes of calculating contributions.
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Plan Example
The University of Colorado's 401(a) plan is a great example of how these plans work. Employees are required to contribute 5% of their salary, and the university contributes 10%.
Contributions are made on a pre-tax basis, which means you won't pay taxes on that money until you withdraw it in retirement. Social Security and Medicare taxes still apply to these contributions.
The university's plan requires some employees to participate, and it's a good idea to check with your employer to see if you're eligible for a similar plan.
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Rules

A 401(a) plan can be structured to allow for pre-tax or post-tax contributions, depending on how the employer sets it up.
The plan's vesting schedule determines how much of your employer's contributions you actually own.
You'll own 20% of your employer's contributions after 2 years of employment or service, and 40% after 3 years.
Any mandatory contributions are made on a pre-tax basis, while voluntary contributions are made with after-tax money.
Voluntary employee contributions are capped at 25% of your income, with a maximum income of $330,000 considered for contribution purposes in 2023.
You can roll over your 401(a) plan money into an IRA or another qualified retirement plan when you leave your employer.
If you withdraw your money before age 59 ½, you'll pay a 10% penalty on top of income taxes, and your employer will withhold 20% for tax purposes.
Required minimum distributions (RMDs) apply starting at age 73, and can incur a 25% penalty if not taken.
However, if you're still working for your employer after the RMD start age, you don't have to begin taking RMDs from the plan until you retire.
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Frequently Asked Questions
Is a 401a a good retirement plan?
A 401(a) plan is a low-risk, tax-advantaged option for public-sector employees, but its limited investment choices may not suit everyone's needs. Consider exploring its benefits and drawbacks to determine if it's a good fit for your retirement savings goals.
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