
A 401k plan is a type of retirement savings plan that many employers offer to their employees. It's a great way to save for your future, especially if your employer matches your contributions.
The name "401k" comes from the section of the tax code that created this type of plan. The "k" refers to the year 1986, when the plan was modified to allow employees to contribute a portion of their salary to a retirement account.
In a 401k plan, you contribute a portion of your paycheck to a retirement account before taxes are taken out. This reduces your taxable income for the year.
Your employer may also contribute to your 401k plan, either by matching your contributions or by adding a fixed amount to your account each year.
If this caught your attention, see: Can You Choose What Type O 401k You Get
What is a 401(k)?
A 401(k) is a type of retirement savings plan that allows eligible employees to make pre-tax elective deferrals through payroll deductions. This means you contribute a portion of your paycheck before taxes are taken out, reducing your taxable income.
Broaden your view: Governmental 457 Plan
Employers can also contribute to a 401(k) plan on behalf of their employees, either as a matching contribution or as an additional benefit. These employer contributions can be subject to a vesting schedule, which means you may not be fully entitled to them right away.
To ensure the plan is fair to all employees, the employer must perform annual tests to verify that the contributions don't favor highly compensated employees.
Traditional 401(k) Plans
A traditional 401(k) plan allows eligible employees to make pre-tax elective deferrals through payroll deductions. This means you contribute to your retirement savings before taxes are taken out.
In a traditional 401(k) plan, employers can make contributions on behalf of all participants, or matching contributions based on employees' elective deferrals. These employer contributions can be subject to a vesting schedule.
Employers must perform annual tests to ensure the plan satisfies nondiscrimination requirements. This includes the Actual Deferral Percentage (ADP) and Actual Contribution Percentage (ACP) tests.
Contributions made under the plan must meet specific requirements to avoid favoring highly compensated employees.
Simple 401(k) Plans
A Simple 401(k) plan is a type of retirement plan designed for small businesses.
These plans were created to provide an effective and cost-efficient way for employers to offer retirement benefits to their employees.
A Simple 401(k) plan is available to employers with 100 or fewer employees who received at least $5,000 in compensation from the employer for the preceding calendar year.
The employer is required to make employer contributions that are fully vested under a Simple 401(k) plan.
Employees who are eligible to participate in a Simple 401(k) plan may not receive any contributions or benefit accruals under any other plans of the employer.
For example, if an employer offers a Simple 401(k) plan, an employee cannot also receive matching contributions from a different plan.
Simple 401(k) plans are not subject to the annual nondiscrimination tests that apply to traditional 401(k) plans.
You might enjoy: How to Receive 401k
Contributing to a 401(k)
Contributing to a 401(k) can be a great way to save for retirement, and it's actually quite straightforward. An elective-deferral contribution is made directly from an employee's salary to their employer-sponsored retirement plan, such as a 401(k).
To make a 401(k) deferral, an employee must authorize the transaction before the contribution can be deducted. This is typically done through payroll deductions. An employee's pay is taxed at a lower rate because of the pre-tax elective deferral, which reduces their taxable income.
The amount an employee can contribute to a 401(k) is limited by the IRS. In 2024, the limit is $23,000 for those under 50, and $30,500 for those 50 or older. The catch-up contribution for those 50 or older is an additional $7,500.
Employers may also match a portion of an employee's contribution, which can be a great bonus. The total contributions to an employee's retirement plan from both the employee and employer cannot exceed the lesser of 100% of the participant's compensation or $69,000 in 2024.
Here are the IRS limits for 401(k) elective deferrals:
It's worth noting that employer matching contributions may be subject to annual tests to determine if nondiscrimination requirements are met.
Elective Deferrals
Elective deferrals are a key component of 401(k) plans, and understanding how they work is essential for making the most of your retirement savings.
An elective deferral is the amount that an employee chooses to deduct from their paycheck and deposit into an employer-sponsored retirement plan like a 401(k). The IRS sets limits on elective deferrals, with a maximum of $23,000 in 2024 and $22,500 in 2023 for individuals under 50.
Individuals 50 or older can contribute an additional $7,500 each year, bringing the total to $30,500 in 2024 and $30,000 in 2023. This catch-up contribution is a valuable option for those nearing retirement.
Employers may also match a portion of the employee's contribution, but the combined total cannot exceed the lesser of 100% of the employee's salary or $69,000 in 2024 ($76,500 with the catch-up contribution) and $66,000 in 2023 ($73,500 with the catch-up contribution).
Here are the IRS limits on elective deferrals:
These limits apply to both traditional and Roth 401(k) plans, and individuals can contribute up to these limits even if they have multiple 401(k) accounts.
Elective deferrals can be made on a pre-tax basis, reducing an employee's taxable income and lowering their overall tax bill. This can be a significant benefit, especially for high-income earners who may be subject to higher tax rates.
Employers may also make matching contributions to a 401(k) plan, which can be a valuable incentive for employees to participate in the plan. Matching contributions can be subject to annual tests to ensure that they do not discriminate in favor of highly compensated employees.
Overall, elective deferrals are an essential part of 401(k) plans, and understanding how they work can help individuals make the most of their retirement savings.
Here's an interesting read: Are 401k Subject to Rmd
Auto-enrollment and Benefits
Auto-enrollment and Benefits can be a game-changer for employees and employers alike. An automatic enrollment feature in a 401(k) plan allows employers to automatically reduce employees' wages by a fixed percentage or amount and contribute that amount to the 401(k) plan.
This feature has been an effective way for many employers to increase participation in their 401(k) plans. Contributions made through automatic enrollment qualify as elective deferrals.
These contributions can make a significant difference in an employee's retirement savings. Automatic enrollment can help employees start saving for retirement earlier, which can lead to a more secure financial future.
On a similar theme: Auto Rollover Ira
Key Information
You can contribute up to $23,000 to a qualified retirement plan in 2024 if you're under 50, and up to $30,500 if you're 50 or older with catch-up contributions.
Employers can also make contributions on behalf of all participants, but these contributions can be subject to a vesting schedule, which means an employee's right to employer contributions becomes nonforfeitable only after a period of time.
The IRS limits how much you can contribute to a qualified retirement plan, and these limits are adjusted annually.
Here's a summary of the annual contribution limits:
Note that these limits are subject to change, so it's essential to check the IRS website for the most up-to-date information.
Key Takeaways
If you're considering contributing to a retirement plan, here are some key takeaways to keep in mind.
You can make elective-deferral contributions directly from your salary to your employer-sponsored retirement plan, such as a 401(k). Elective deferrals can be made on a pre-tax or after-tax basis if your employer allows it.
For more insights, see: Elective Deferrals to 401k

The IRS limits how much you can contribute to a qualified retirement plan. For individuals under 50, the limit is $23,000 in 2024, or $22,500 in 2023.
If you're 50 or older, you can make catch-up contributions of an additional $7,500 in 2024 and 2023, bringing your total contribution limit to $30,500 or $30,000, respectively.
Here's a summary of the contribution limits:
Remember to check with your employer to see if they allow after-tax contributions, which can be beneficial for high earners.
Safe Harbor 401(k)
A safe harbor 401(k) plan is similar to a traditional 401(k) plan but with some key differences.
Employer contributions in a safe harbor 401(k) plan must be fully vested when made, which means employees own them right away.
Employer matching contributions are limited to employees who defer, or employer contributions made on behalf of all eligible employees, regardless of whether they make elective deferrals.
Safe harbor 401(k) plans are exempted from the top-heavy rules of section 416 of the Internal Revenue Code if they don't provide any additional contributions in a year.
Employers sponsoring safe harbor 401(k) plans must give each eligible employee written notice of their rights and obligations under the plan.
The notice must describe the safe harbor method in use, how eligible employees make elections, and any other plans involved.
Employers must provide notice within a reasonable period before each plan year, which is deemed to be satisfied if the notice is provided at least 30 days and not more than 90 days before the beginning of each plan year.
There are special rules for employees who become eligible after the 90th day, so it's essential to review the Income Tax Regulations section 1.401(k)-3(d)(3) for more information.
Traditional and safe harbor plans can be combined with other retirement plans, making them a versatile option for employers of any size.
Discover more: 401k Fund Change Notice Requirements
Frequently Asked Questions
What does 401k EE after-tax mean?
EE after-tax 401(k) contributions allow you to invest extra money beyond the annual limit, with tax-free growth but taxable earnings upon withdrawal
Featured Images: pexels.com


