401a vs 401k: What's the Difference?

February 01, 2022 · 10 minute read

We’re here to help! First and foremost, SoFi Learn strives to be a beneficial resource to you as you navigate your financial journey. Read more We develop content that covers a variety of financial topics. Sometimes, that content may include information about products, features, or services that SoFi does not provide. We aim to break down complicated concepts, loop you in on the latest trends, and keep you up-to-date on the stuff you can use to help get your money right. Read less

401a vs 401k: What's the Difference?

A 401(k) plan and a 401(a) plan may sound confusingly similar, but there are some differences between the two retirement accounts.

The biggest differences between 401(k) and 401(a) plans are in the types of companies that offer them and their contribution requirements. While most private sector companies are eligible to offer 401(k) plans, only certain government and public organizations can offer their employees a 401(a) plan. Employers must contribute to 401(a) plans and can make it mandatory for employees to contribute a pre-set amount as well. By contrast, employers do not have to contribute to 401(k) plans and employees are free to choose whether they want to contribute.

What Is a 401(a) Plan?

A 401(a) plan is an employer-sponsored retirement account that typically covers government workers and employees from specific education institutions and nonprofits. It is different from an IRA in that the employer sponsors the plan, determines the investment options that the employees can choose from, and sets the vesting schedule (the amount of time an employee will have had to have worked with the organization before all employer contributions become fully theirs, even if they leave the company).

With IRAs, the individual investor decides how much to contribute and if/when they want to make withdrawals from the account. With a 401(a) plan, employer contributions are mandatory; employee contributions are not. All contributions made to the plan accrue on a tax-deferred basis.

Recommended: Breaking Down the Differences Between an IRA and 401(k)

However, withdrawing from either type of plan may incur penalties for withdrawing money before age 59½.

What is a 401(k) Plan?

A 401(k) plan is a benefit offered by for-profit employers as part of the employee’s compensation package. The employer establishes the plan, along with the investment options the employee can choose from and the vesting schedule. As with 401(a) plans, funds contributed are tax-deferred and help employees save for retirement.

Some employers choose to offer a match program in which the company matches employee contributions up to a specific limit.

401(k) plans are also accessible to entrepreneurs and self-employed business owners.

Who Contributes to Each Plan?

Under a 401(a) plan, employer contributions are mandatory, though the employer can decide whether they’ll contribute a percentage of the employees’ income or a specific dollar amount. Employers can establish multiple 401(a) accounts for their employees with different eligibility requirements, vesting schedules, and contribution amounts.

Employee participation is voluntary, with contributions capped at 25% of their pre-tax income.

Under a 401(k) plan, employees can voluntarily choose to contribute a percentage of their pre-tax salary. Employees are not required to participate in a 401(k) plan. Employers are permitted but not required to contribute to a 401(k) plan, and many will match up to a certain amount.—say, 3%—of employees’s alaries.

401(a) vs. 401(k) Contribution Limits

For 2022, the total 401(a) contribution limit—from both employer and employee—is $61,000. However, employees with 401(a) plans can also contribute to a 403(b) plan and a 457 plan simultaneously (more on those plans in the 401(a) vs Other Retirement Plan Options section).

Employee contributions for 401(k) plans have a $20,500 limit in 2021. Employees who are 50 or older may contribute up to an additional $6,500 for a total of $27,000. An employee with a 401(k) plan can also have a Roth or traditional IRA. However, there are limits on how much they can contribute to an IRA account—$6000 for a traditional IRA, with an extra $1000 for people over age 50. If you are interested in open an individual retirement account then consider doing so through SoFi. You will get access to a broad range of investment options, member services, and our robust suite of planning and investment tools.

Is your retirement piggy bank feeling light?

Start saving today with a Roth or Traditional IRA.

401(a) vs. 401(k) Investment Options

401(a) plans often offer various investment options, which may include more conservative investments such as stable value funds to more aggressive investments such as stock funds. Some 401(a) plans may allow employees to simplify diversified portfolios or seek investment advice through the plan’s advisor.

Most 401(k) plans also offer various investment choices ranging from low-risk investments like annuities and municipal bonds to equity funds that invest in stocks and reap higher returns.

401(a) vs. 401(k) Tax Rules

The tax rules in a 401(a) plan can differ from a traditional 401(k).

With a 401(a), employees make pre-tax or after-tax contributions, depending on how their employer decides to structure the plan. Pre-tax means contributions are not taxed at the time of investment, but later upon withdrawal. After-tax means contributions are taxed before being deposited into the account

A 401(k), on the other hand, is a tax-deferred retirement plan, meaning all contributions are pre-tax. The wages employees choose to contribute to their plan are untaxed upon initial investment. Income taxes only kick in when the employee decides to withdraw funds from their account.

Can You Borrow from Each Plan?

You can borrow from either a 401(a) or a 401(k) plan if you have an immediate financial need, but there are some restrictions and it is possible to incur early withdrawal penalties.

An employer can limit the amount borrowed from a 401(a) plan—and may choose not to allow employees to borrow funds. If the employer does allow loans, the maximum amount an employee can borrow is the lesser of:

•  $10,000 or half of the vested account balance, whichever is greater OR
•  $50,000

Because the employee is borrowing money from their account, when the employee pays back the loan’s interest, they are paying it to themselves. However, the IRS requires employees to pay back the entire loan within five years . If they don’t pay the loan back, the IRS will consider the loan balance to be a withdrawal and will require taxation on the remaining loan amount as well as a 10% penalty if the employee is under age 59½.

Borrowing from a 401(k) plan is similar. Employees are limited to borrowing $50,000 or half of the vested balance—whichever is less. One big difference between borrowing from a 401(a) plan vs. a 401(k) plan is employees lose out on a tax break if they borrow from their 401(k) because they are repaying it with after-tax dollars. Because the money is taxed again when withdrawn during retirement, an investor is essentially being taxed twice on that money.

Can You Borrow Money from a 401(a) or 401(k) to Buy a Home?

You may be able to use the funds from a 401(a) or 401(k) account to purchase a home. Remember, with 401(a) plans, the employer ultimately decides if loans are permitted from the 401(k).

If you borrow money from your 401(a) or 401(k) to fund the purchase of a home, you have at least five years to repay what you’ve taken out.

The maximum amount you’re allowed to borrow follows the rules stated above:
•  $50,000 OR
•  The greater between $10,000 or half of what’s vested in your account,

Whichever is less.

When Can You Withdraw From Your Retirement Plan?

Employees can begin to withdraw money from their 401(a) plan without penalty when they turn 59½. If they make any withdrawals before 59½, they will need to pay a 10% early withdrawal penalty. Once they reach 70½, they’re required to make withdrawals if they haven’t already started to.

With a 401(k) plan, if an employee retires at age 55, they can start withdrawing money without penalty. However, to take advantage of this early-access provision, they need to have kept the money in the 401(k) plan and not have rolled it into a Roth IRA account.

Employees also need to have ended their employment no earlier than the year in which they turn 55.

Otherwise, the restrictions are the same as with a 401(a) plan, and they can begin to withdraw money penalty-free once they turn 59½.

401(a) vs. 401(k) Rollover Rules

Generally, 401(a) and 401(k) accounts have similar rollover rules. When an employee chooses to leave their job, they have the option to roll over funds. The employee can choose to roll the account into another retirement plan or take a lump-sum distribution. Generally, if the employee decides to roll over their plan to another plan, they have to do so within 60 days of moving the funds.

The rules for a 401(a) rollover dictate that funds can be transferred to another qualified plan like a 401(k) or an individual retirement account (IRA). The rules for 401(k)s are the same.

If the employee decides to take a lump-sum distribution from the account, they will have to pay income taxes on the full amount. If they are under 59 ½, they will also have to pay the 10% penalty.

What if you don’t rollover your 401(k)? Find out what happens to a 401(k) when you leave your job.

What is a 401a Profit Sharing Plan?

A 401(a) profit sharing plan is a tax-advantaged account used to save for retirement. Employees and employers contribute to the account based on a set formula determined by the employer. Unlike 401(a) plans, the employer’s contributions are discretionary, and they may not contribute to the plan every year.

All contributions from employees are fully vested. The ownership of the employer contributions may vary depending on the vesting schedule they create.

Like 401(a) plans, 401(a) profit sharing plans allow employees to select their investments and roll over the account to a new plan if the employee leaves the company. If an employee wants to take a distribution before reaching age 59 ½, they are subject to income taxation and a 10% penalty.

401(a) vs Other Retirement Plan Options

401a vs. 403b

A 403b is a tax-advantaged retirement plan offered by specific schools and nonprofits. Like 401(a) and 401(k) plans, employees can contribute with pre-tax dollars. Employers can choose to match contributions up to a certain amount. Unlike the 401(a) plan, employers don’t have mandatory contributions.

As of 2022, the employee contributions limit is $20,500. If the plan allows, 50 or older employees may contribute a catch-up amount of $6,500.

Generally, 403b plans are either invested in annuities through an insurance company, a custodian account invested in mutual funds, or a retirement income account for church employees.

Additionally, 403b plans allow for rollovers and distributions without a 10% penalty after age 59 ½. Like similar plans, employees may have to pay a 10% penalty if they take a distribution before reaching age 59 ½ unless the distribution meets other qualifying criteria.

401(a) vs 457

457 plans are retirement plans offered by certain employers such as public education institutions, colleges, universities, and some nonprofit organizations. 457 plans share similar features with 401(a) plans, including pre-tax contributions, tax-deferred investment growth, and a choice of investments that employees can select.

Employees can also roll over funds to a new plan or take a lump-sum distribution if they leave their job. However, unlike a 401(a) or 401(k) plan, the withdrawal is not subject to a 10% IRS penalty.

Another option offered through 457 plans is for employees to contribute to their account on either a pre-tax or post-tax basis.

401(a) vs Pension

A 401(a) is a defined contribution plan, where a pension is a defined benefit plan. With a pension, employees receive the benefit of a fixed monthly income in retirement; their employer pays them a fixed amount each month for the rest of their life. The monthly payment can be based on factors like salary and years of employment.

With a 401(a), employees have access to what they and their employer contributed to their 401(a) account. In contrast to a pension plan, retirees aren’t guaranteed a fixed amount and their contributions may not last through the end of their life.

The Takeaway

The largest difference between 401(a) and 401(k) plans is the type of employers offering the plans. Whereas 401(a) plans typically cover government workers and employees from specific education institutions and nonprofits, 401(k) plans are offered by for-profit organizations. Thus, a typical employee won’t get to choose which plan to invest in—the decision will be made based on what organization they work for.

Both 401(a) plans and 401(k) plans do have restrictions that might bother some investors. For example, an employee will be at the mercy of their employer’s choice when it comes to investing options.

Ultimately, saving for retirement may encompass more than just an employer-sponsored account. SoFi Invest® offers flexible retirement savings options to help members get closer to their retirement goals.

Find out how SoFi Invest can help with your retirement planning.

Photo credit: iStock/solidcolours
SoFi Invest®
The information provided is not meant to provide investment or financial advice. Also, past performance is no guarantee of future results.
Investment decisions should be based on an individual’s specific financial needs, goals, and risk profile. SoFi can’t guarantee future financial performance. Advisory services offered through SoFi Wealth, LLC. SoFi Securities, LLC, member FINRA / SIPC . SoFi Invest refers to the three investment and trading platforms operated by Social Finance, Inc. and its affiliates (described below). Individual customer accounts may be subject to the terms applicable to one or more of the platforms below.
1) Automated Investing—The Automated Investing platform is owned by SoFi Wealth LLC, an SEC registered investment advisor (“Sofi Wealth“). Brokerage services are provided to SoFi Wealth LLC by SoFi Securities LLC, an affiliated SEC registered broker dealer and member FINRA/SIPC, (“Sofi Securities).
2) Active Investing—The Active Investing platform is owned by SoFi Securities LLC. Clearing and custody of all securities are provided by APEX Clearing Corporation.
3) Cryptocurrency is offered by SoFi Digital Assets, LLC, a FinCEN registered Money Service Business.
For additional disclosures related to the SoFi Invest platforms described above, including state licensure of Sofi Digital Assets, LLC, please visit www.sofi.com/legal. Neither the Investment Advisor Representatives of SoFi Wealth, nor the Registered Representatives of SoFi Securities are compensated for the sale of any product or service sold through any SoFi Invest platform. Information related to lending products contained herein should not be construed as an offer or prequalification for any loan product offered by SoFi Bank, N.A.
Tax Information: This article provides general background information only and is not intended to serve as legal or tax advice or as a substitute for legal counsel. You should consult your own attorney and/or tax advisor if you have a question requiring legal or tax advice.
Financial Tips & Strategies: The tips provided on this website are of a general nature and do not take into account your specific objectives, financial situation, and needs. You should always consider their appropriateness given your own circumstances.


All your finances.
All in one app.

SoFi QR code, Download now, scan this with your phone’s camera

All your finances.
All in one app.

App Store rating

SoFi iOS App, Download on the App Store
SoFi Android App, Get it on Google Play

TLS 1.2 Encrypted
Equal Housing Lender