A 401(k) is a retirement savings plan sponsored by an employer that allows employees to invest a portion of their paycheck before taxes are taken out.
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Last Updated: December 19, 2025
Small business owners are grateful for good employees. Offering them competitive pay and quality benefits can help business owners retain the very best employees. A retirement plan is an important benefit to many workers; it can be a great way for employers to show their team that they care. A popular plan is the 401 (k).
The Employee Retirement Income Security Act (ERISA) doesn’t require employers to give retirement plans to their employees, but employers do have to follow certain rules if they do. The rules to follow depend on the kind of retirement plan chosen. This guide will clarify what a 401(k) is and some of the plan’s primary rules and features.
First off, 401(k) stands for retirement plans qualified under Section 401(k) of the Internal Revenue Code. In many 401 (k)’s, an employer contributes part of a participating employee’s wages to a retirement account for the employee before withholding taxes from their paycheck. These accounts serve as “savings accounts” with specific perks for employees’ futures.
But entrepreneurs like choices, and there are choices available among 401(k) options. The plan offered can be a:
Depending on how an entrepreneur chooses to handle the funds in a 401 (k), a company’s employee accounts might earn significant interest or returns on investments. Employees might not only save money for a rainy day but also see their money grow beyond the amount of their contributions.
Not every 401(k) is the same. The definitions and rules change depending on the kind of 401(k) an entrepreneur chooses for their business. The three kinds of pre-tax 401 (k) plans that employers provide are:
Employers can also sponsor a post-tax Roth 401(k) for their employees.
Entrepreneurs who are considering offering benefits would be wise to consult with a financial professional to discuss different capabilities and options.
Having a 401(k) retirement plan can be a win-win decision for a business. 401(k) benefits can help keep a workforce happy and attract top talent. Also, a small business gets the added perks of federal income tax deductions and certain tax deferrals when it sponsors a 401(k) for its employees.
There are many upsides to offering a 401(k) retirement plan, but it’s still a lot of extra work and cost. When a business sponsors a 401(k), it might have to follow several rules about contribution amounts, providing notice to employees, and making vested contributions.
With a 401(k) retirement plan, an employer can help their team save some hard-earned cash to set up a better future. Not only can a 401(k) help entrepreneurs foster a happy workforce, but it can also give the company considerable tax benefits. While setting up a plan can require additional investment of time and resources, it can provide a business with numerous benefits that make the effort worthwhile.
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Disclaimer: The content on this page is for information purposes only and does not constitute legal, tax, or accounting advice. For specific questions about any of these topics, seek the counsel of a licensed professional.
Written by ZenBusiness Editorial Team
The ZenBusiness Editorial Team has more than 20 years of combined small business publishing experience and has helped over 850,000 entrepreneurs launch and grow their companies. The team’s writers and business formation experts are dedicated to providing accurate, practical, and trustworthy guidance so business owners can make confident decisions.
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