A middle-aged woman sits at a table in her home, looking at a check in her hand. A laptop, an open envelope, and several papers are on the table in front of her. The woman has short hair and wears a muted yellow button-up shirt over a peach T-shirt and jeans.
A match program allows your employees to choose how much to contribute to their 401(k)s. That contribution is then matched (up to a certain limit) by the employer. — Getty Images/MoMo Productions

Retirement plans consistently rank as a top employee benefit, second only to health insurance. When businesses offer matching 401(k) contributions, they may attract more job candidates and increase their employee retention rate. A 401(k) company match doesn’t need to be complex; contribution limits can keep it predictable and within your budget.

Explore average company contributions and formulas to build a competitive 401(k) match plan. This guide explains how to offer a 401(k) with employer match, covering costs, benefits, and rules.

What is a 401(k) match?

An employer 401(k) match is a retirement benefit where your business adds funds to an employee’s retirement account when they contribute. For example, you might match dollar-for-dollar up to 3% of their salary or 50 cents per dollar on contributions up to 6%. To comply with IRS regulations, it’s essential to understand 401(k) employer match rules when designing your plan.

Vanguard found that 96% of 401(k) plans have an employer contribution. This breaks down to 50% with an employer match, 10% with non-matching donations only, and 36% with both options. Likewise, 85% of Fidelity's 401(k) plans have some type of company contribution.

[Read more: Top Retirement Plan Providers: An Employer Guide]

Benefits of offering a 401(k) company match

By offering 401(k) matching, businesses can reduce taxes, enhance employee satisfaction, and attract top-tier candidates. Matching 401(k) contributions is a cost-effective way to show employees you’re invested in their futures.

Consider the following benefits of 401(k) matching:

  • Reduce taxable income: Employer contributions are tax-deductible, up to 25% of your team’s total compensation. For instance, if you contribute $15,000 to your employees’ 401(k)s, you can deduct that amount, reducing your taxable income by $15,000.
  • Claim tax credits: Under the SECURE Act, small businesses can claim up to $5,000 in tax credits yearly for setting up a 401(k) plan, plus an extra $500 for enabling automatic enrollment.
  • Retain employees: Offering a 401(k) company match encourages employees to stay. Many see it as "free money" and part of their overall compensation.
  • Attract qualified talent: A 401(k) match helps your business stand out in competitive job markets, showing candidates you’re invested in their future.

How does a 401(k) match work?

A 401(k) with employer match allows businesses to contribute a percentage of employee salaries to retirement savings based on predefined formulas. To administer the plan, you’ll typically partner with a payroll provider, professional employer organization (PEO), or standalone retirement plan provider. These partners handle much of the process, from calculating contributions to ensuring compliance, saving you time and effort.

Here’s how a match program could work using a payroll provider like Gusto or Paychex:

  • Employees choose their contribution level, and the payroll system calculates your 401(k) company match based on your formula.
  • During payroll runs, the software automatically withholds employee contributions and calculates your 401(k) match.
  • The service transfers contributions to the retirement plan and monitors IRS compliance and annual limits.

[Read more: PEOs vs. Insurance Brokers for Health Benefits]

Understanding 401(k) employer match rules

Employer 401(k) match rules create the framework for your match program. These rules define which employees qualify for the match, how much your business will contribute, and when employees gain full ownership of those contributions.

Carefully designing your 401(k) employer match rules ensures your plan complies with ERISA (Employee Retirement Income Security Act) standards while maximizing your team's and business's benefits. Let’s go through the necessary components of 401(k) matching rules for employers.

Eligibility requirements

Eligibility rules determine who qualifies for your 401(k) match and help you manage costs. Setting clear criteria can also reassure new hires that your plan is fair and transparent. IRS and other standards could impact your eligibility rules too.

Here’s what you need to know:

  • Minimum age or tenure requirements: Many plans require employees to be at least 21 years old, and some say that workers must be with the company for a year before qualifying for the match.
  • Minimum contributions: Employees might need to contribute a certain percentage of their salary, like 3%, to receive the company match.
  • Part-time employees: Review the SECURE Act, which allows long-term part-time employees to qualify after working 500 hours per year for three years.
  • Waiting periods for new hires: You can implement a waiting period, such as 30 or 90 days before employees are eligible to participate.
  • Union or contract agreements: Ensure your eligibility rules align with collective bargaining agreements or other external contracts.

Common 401(k) employer matching formulas

Your matching formula determines how much your business contributes to employees’ 401(k)s. The employer 401(k) match can be structured to meet company goals, like encouraging higher contributions or rewarding tenure. With hundreds of possible combinations, you can choose a 401(k) employer match formula that balances costs and benefits to achieve your desired outcomes.

Among Vanguard plan holders (representing nearly five million people), the most common formula is a 401(k) match of 50% on contributions up to 6% of salary. This structure uses a single-tier formula with a partial match.

Here are the most widely used 401(k) employer matching formulas:

  • Single-tier match formula: This type of matching, often referred to as fixed matching, is popular among small businesses and easy to administer. It uses a single, consistent rate for all contributions up to a percentage of salary. Examples include $0.50 per dollar on the first 6% of pay (partial match) or dollar-for-dollar up to 4% of wages (full match).
  • Multi-tier match formula: This structure, known as graded matching, applies different rates to different contribution levels, encouraging employees to save more. A typical 401(k) employer match example is matching $1.00 per dollar on the first 3% of pay and $0.50 per dollar on the next 2%.
  • Dollar cap formula: This option sets clear contribution limits, combining a percentage match with a set maximum dollar amount. It provides complete control over your spending, making it easier to plan and budget. For instance, an employer might match dollar-for-dollar up to 3% of salary, with a maximum of $2,000 per year.
  • Custom 401(k) match formulas: Tailored structures reward employee groups or behaviors, like seniority or higher contributions. You could match $0.75 for employees with less than five years of service and dollar-for-dollar for those with more than five years, or use a stretch match formula to increase deferrals by matching 50% of contributions up to 8% of salary instead of dollar-for-dollar on 4%.

[Read more: Understanding Employee Retirement Plan Options]

With hundreds of possible combinations, you can choose a 401(k) employer match formula that balances costs and benefits to achieve your desired outcomes.

SIMPLE and safe harbor matching rules

Specific matching rules apply if you offer a SIMPLE or safe harbor 401(k). These plans simplify compliance by exempting you from annual IRS nondiscrimination testing, but they come with stricter guidelines.

For instance, employers offering traditional 401(k)s can match employee contributions and add nonelective funds some years or every year. With SIMPLE and safe harbor plans, you must choose to match employee contributions or give nonelective funds yearly.

The IRS provides this guidance when matching contributions with safe harbor and SIMPLE 401(k) plans:

  • SIMPLE 401(k) programs: You agree to fully match your employees' contributions to their retirement accounts dollar-for-dollar up to 3% of their pay.
  • Safe harbor 401(k) plans: You agree to fully match contributions dollar-for-dollar on the first 3% of pay and 50% on the next 2%.

What is the average 401(k) match?

Aligning your 401(k) match with industry averages or offering higher contribution rates can help your company attract job candidates and improve retention. According to Vanguard’s 2024 data, the average employer match is 4.6%. The median match is 4%, meaning half of employers contribute more and half contribute less. At the higher end, some companies provide matches covering up to 6.99% of employee contributions.

Fidelity reports similar trends, with an average employer match of 4% for employees who contribute at least 5% of their salary. Additionally, 78% of employees in Fidelity-managed plans take full advantage of their employer’s match by contributing enough to receive the maximum amount.

Types of 401(k) vesting schedules

Vesting schedules determine when employees gain full ownership of their matching contributions. So, if they leave your business, your vesting schedule decides how much (if any) funds they own from your contributions. Pairing a fair vesting schedule with a solid corporate culture can make your team feel valued while also rewarding loyalty.

Consider the following 401(k) vesting schedules:

  • Immediate vesting: Employees own 100% of your contributions as soon as they’re made. This option is simple and popular with employees.
  • Graded vesting: Ownership builds over time, incentivizing employees to stay. For instance, employees own 20% after one year, 40% after two years, and are fully vested after five years.
  • Cliff vesting: Employees gain 0% ownership until a specific milestone, then receive 100%. For example, employees become fully vested after three years of service.

How much does a 401(k) cost?

In addition to startup costs, small businesses pay administrative fees to cover recordkeeping, trustee services, and investment or advisory support. The actual cost of your 401(k) match depends on your formula and employee participation rates.

Based on data from the 2024 edition of the 401k Averages Book — published yearly since 1995 — smaller 401(k) programs with 10 participants and $100,000 in assets pay an average of 4.16% in total costs, including investment, recordkeeping, and administration fees. Larger retirement plans with 500 participants and $5 million in assets pay much less, averaging 1.62% in total costs.

While your costs increase as plan balance rises, you also tend to pay lower fees as a percentage of your total assets. For example, a company with 50 participants would pay 2.31% of total assets or $231 per employee if the plan has $500,000 in assets compared to 1.04% or $1,038 per participant if the program has $5 million in assets.

[Read more: PEO vs. HRO: Comparing Small Business Solutions]

Managing costs while matching 401(k) contributions

Strategically matching 401(k) contributions can make the program affordable for employers and valuable to employees. You can always start small with a modest company matching formula and adjust it as your business grows. Also, shopping around to find competitive rates can keep costs down.

Consider these tips to design a cost-effective 401(k) match program:

  • Apply startup tax credits to offset costs for the first years of the plan.
  • Use your provider’s automated compliance checks to save on fees.
  • Enable automatic enrollment, exempting the plan from yearly IRS testing requirements.
  • Work with your tax advisor to deduct some administrative costs as business expenses.
  • Optimize your match formula to get the most tax exemptions without exceeding the limit.
  • Understand how recent 401(k) contribution limits affect your strategy and budget.

How to match employee 401ks

If you currently offer your team retirement plan options, matching 401(k) contributions can encourage more employees to sign up or improve the overall return on your investment. Your existing plan partner can walk you through the steps to set up employer matching.

To establish a new program, human resources and payroll providers, PEOs, and investment services offer small business 401(k) plans and administration. Many provide 401(k) plan fee disclosure forms to compare options. Alternatively, the U.S. Department of Labor has a free version.

Here’s how these options differ:

  • HR and payroll services: Small businesses that want to bundle 401(k) services with payroll can select a simple solution from Gusto, Paychex, or ADP. These providers partner with retirement plan companies to offer SMB plans, automatically deduct employer and employee contributions from payroll, and allow you to manage compliance tasks from a single platform.
  • PEO partners: With the PEO co-employment model, small businesses can access Fortune 500 insurance and retirement plans with competitive pricing. PEOs like Justworks, TriNet, and Rippling handle administration, including compliance, payroll contributions, and IRS reporting, making this solution ideal for companies that want an all-in-one HR solution.
  • Retirement plan providers: If you want more customization and control over your plan options, consider standalone solutions like Human Interest, Vanguard, or Guideline. These firms offer full-service administration and compliance and integrate with your payroll software. These can be cost-effective options for small businesses that don’t need additional HR and payroll services yet want flexible investment choices and expert management.

[Read more: How to Set Up a Small Business 401(k)]

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