401(k) plan

A 401(k) plan is a defined contribution retirement plan in Financial Accounting II. Employees contribute part of their pay, and the employer may add a match, but the company does not promise a fixed retirement benefit.

Last updated July 2026

What is 401(k) plan?

A 401(k) plan is a defined contribution retirement plan, which means the employer’s obligation is usually limited to the amount it promises to contribute, not to a future retirement payout. In Financial Accounting II, that difference matters because the accounting is much simpler than a defined benefit pension plan. You track contributions, not a guaranteed lifetime benefit.

For the employee, a 401(k) lets money come out of each paycheck before taxes in a traditional plan, or after taxes in a Roth 401(k). That money is invested in options like mutual funds or bond funds, and the final retirement value depends on how much is contributed and how the investments perform. The employer may also add an employer match, which is extra money tied to the employee’s own contribution.

From an accounting angle, the company records its own contribution expense in the period the employee earns it. If the plan offers a match, that match becomes part of compensation cost, not a pension liability that must be estimated over decades. That is one reason 401(k) plans are easier to account for than defined benefit plans.

A common mistake is treating a 401(k) like a company debt that grows with investment returns. The investment risk belongs to the employee, not the employer. If the market performs badly, the employee’s account grows less, but the company usually does not owe extra money just because the investments underperformed.

In real class problems, a 401(k) plan often shows up as part of a benefits or payroll entry. You may need to identify the employee contribution, the employer contribution, and the related compensation expense. If the problem compares plans, the 401(k) is the one where the company’s accounting is tied to the contribution amount, not to a projected retirement promise.

Why 401(k) plan matters in Financial Accounting II

The 401(k) plan matters because it is the cleanest contrast to a defined benefit pension in Financial Accounting II. Once you can tell those two apart, a lot of the rest of the chapter starts making sense, especially what belongs on the balance sheet, what hits compensation expense, and what never becomes a long-term pension obligation.

It also connects directly to payroll and equity topics. When a company withholds an employee contribution and adds an employer match, the entries affect salary expense, cash, and sometimes payable accounts. If you are tracing how compensation flows through the financial statements, a 401(k) is a real-world example of benefits being recorded as current-period cost instead of a future promise.

This term also helps with plan comparison questions. A defined contribution plan shifts investment risk to the employee, while a defined benefit plan keeps that risk with the employer. That difference changes how analysts read a company’s financial statements and how you explain the accounting behind employee benefits.

For retirement accounting problems, a 401(k) is often the first clue that the setup is contribution-based, not actuarial. Spotting that clue saves time and helps you choose the right journal entry, the right liability, and the right explanation.

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How 401(k) plan connects across the course

Defined Contribution Plan

A 401(k) is one common example of a defined contribution plan. The company’s duty is to contribute a set amount or match formula, and the employee’s account value depends on contributions and investment results. That makes the accounting much more straightforward than plans where the employer promises a specific retirement payout.

Employer Match

The employer match is the extra contribution a company adds when an employee puts money into the 401(k). In accounting, that match is part of compensation expense for the period, so it affects the income statement right away. It also shows why two employees with the same salary can generate different total benefit costs for the employer.

Employee Contribution

Employee contributions are the amounts withheld from pay and deposited into the retirement plan. In a traditional 401(k), they reduce taxable wages before taxes are calculated, while in a Roth 401(k), the contribution is made after tax. For accounting questions, the contribution amount helps you separate what the employee funds from what the employer pays.

ASC 715

ASC 715 is the accounting guidance that covers employee benefits, including pensions and other postretirement plans. A 401(k) is usually much simpler under this framework because the employer is not promising a defined payout. That makes it a good comparison point when a problem asks you to distinguish between contribution-based and benefit-based plans.

Is 401(k) plan on the Financial Accounting II exam?

A quiz question on this term usually asks you to classify the plan, identify who bears the investment risk, or choose the correct journal entry for employer contributions. In a problem set, you may need to separate employee payroll withholding from the company’s match and label the matching compensation expense. If a question compares retirement plans, the 401(k) is the one where the employer’s obligation is based on contributions rather than a guaranteed benefit.

When you see a statement or case, look for clues like payroll deductions, employer match, or account balances tied to investments. Those details tell you it is a defined contribution plan, not a pension liability problem.

401(k) plan vs Defined Benefit Plan

A 401(k) plan is not the same as a defined benefit plan. In a 401(k), the employer contributes money but does not promise a fixed retirement amount. In a defined benefit plan, the company promises a future benefit and has to account for the obligation tied to that promise.

Key things to remember about 401(k) plan

  • A 401(k) plan is a defined contribution retirement plan, so the account value depends on contributions and investment results, not a guaranteed pension formula.

  • In Financial Accounting II, the employer records its contribution or match as compensation expense in the period it is earned.

  • The employee bears the investment risk in a 401(k), which makes it very different from a defined benefit plan.

  • A traditional 401(k) uses pretax employee contributions, while a Roth 401(k) uses after-tax contributions.

  • When you see 401(k) in a problem, look for payroll withholding, employer match, and the absence of a promised retirement payout.

Frequently asked questions about 401(k) plan

What is a 401(k) plan in Financial Accounting II?

A 401(k) plan is a defined contribution retirement plan where employees save part of their pay and employers may add a match. In Financial Accounting II, it matters because the company records contribution expense instead of a long-term pension promise.

How is a 401(k) different from a pension plan?

A 401(k) is contribution-based, so the final retirement amount depends on how much is contributed and how investments perform. A pension plan, usually a defined benefit plan, promises a specific future benefit and creates a larger accounting obligation for the employer.

How do you account for employer 401(k) contributions?

The employer’s contribution is usually recorded as compensation expense when the employee earns it. If the company matches employee deposits, that match becomes part of the current-period cost, not a future pension liability.

What is the difference between a traditional 401(k) and a Roth 401(k)?

A traditional 401(k) usually uses pretax employee contributions, so taxes are deferred until withdrawal. A Roth 401(k) uses after-tax contributions, so qualified withdrawals in retirement are handled differently. The accounting topic stays the same, but the tax treatment changes.

401(k) Plan | Financial Accounting II | Fiveable