Offering retirement plans for employees ranks among the most effective ways to attract and keep great people. But for growing businesses without dedicated HR teams, sorting through 401(k)s, SIMPLE IRAs, SEP-IRAs, and pension options can feel overwhelming. Which plan fits your budget? What are your legal obligations? How do you actually set one up?
These are questions we hear constantly at Soteria HR. As part of our benefits management services, we help small to mid-sized companies design retirement offerings that work, for their teams and their bottom lines. We know firsthand how confusing this process can be, and we’ve guided dozens of organizations through it.
This guide breaks down the major types of retirement plans, what they cost, and how to choose the right option for your organization. Whether you’re offering benefits for the first time or upgrading an existing plan, you’ll walk away with clarity on your options and a practical path forward.
What counts as an employee retirement plan
An employee retirement plan is any employer-sponsored program that helps workers save money for retirement through tax-advantaged accounts. These plans differ from personal savings accounts because your company sets them up, chooses the provider, and often contributes funds or matches employee contributions. The IRS regulates these programs and provides tax benefits to both you and your employees in exchange for following specific rules.
Tax-advantaged accounts designed for the long term
Retirement plans for employees work by allowing workers to set aside pre-tax or post-tax dollars that grow without immediate tax consequences. Contributions to traditional plans reduce your employee’s taxable income today, while Roth options tax contributions now but allow tax-free withdrawals in retirement. The money stays locked until employees reach age 59½ (with some exceptions), which prevents early spending and ensures funds remain available for retirement.
The IRS sets annual contribution limits and requires specific reporting, but in return, both you and your team get meaningful tax advantages that personal savings accounts can’t match.
Employer involvement makes it official
What separates these plans from personal retirement accounts is your role as the employer. You select the plan provider, decide which investment options to offer, handle payroll deductions, and ensure the program meets federal requirements. Many plans also require you to provide annual disclosures to participants and file reports with the Department of Labor. Some employers contribute matching funds or profit-sharing dollars, though that’s not required for every plan type. Your active involvement in administration and oversight transforms a simple savings vehicle into an official employee benefit.
Types of retirement plans employers can offer
You have several retirement plans for employees to choose from, and each serves different business sizes, budgets, and administrative capacities. The right plan depends on how many employees you have, how much you want to contribute, and how much complexity you can handle.
Most common plans for small to mid-sized businesses
Traditional 401(k) plans work well for companies with 20 or more employees and offer the highest contribution limits (up to $23,000 annually for employees in 2024). You decide whether to match contributions, but these plans require annual nondiscrimination testing and regular filings with the Department of Labor. SIMPLE IRA plans fit businesses with fewer than 100 employees and skip complex testing requirements, but you must contribute either a 3% match or a 2% nonelective contribution for all eligible workers. SEP-IRA plans work best for solo entrepreneurs or small teams where only the employer contributes, allowing you to put in up to 25% of compensation or $69,000 per person.
If you employ fewer than 10 people and want minimal administration, a SEP-IRA often provides the cleanest path forward.
Defined benefit pension plans still exist but cost significantly more to run and require actuarial calculations each year, which makes them rare among small businesses today.
Costs and responsibilities for employers
Setting up retirement plans for employees involves both upfront expenses and ongoing obligations that vary widely by plan type. You need to budget for administrative fees, investment management costs, and potentially matching contributions, while also meeting federal reporting requirements and fiduciary responsibilities that carry legal weight.
What you’ll pay to run a plan
Traditional 401(k) plans typically cost $2,000 to $5,000 annually for small businesses, plus investment fees that range from 0.5% to 2% of plan assets. You might also pay setup fees between $500 and $2,500. SIMPLE IRA and SEP-IRA plans cost significantly less because they skip most administrative requirements, though you still pay custodial fees to the financial institution holding the accounts. Beyond provider fees, you cover your own contribution commitments, whether that’s matching employee deferrals or making nonelective contributions.
Many providers now offer low-cost 401(k) options designed specifically for small businesses, but you still need to compare fee structures carefully.
Your legal and administrative duties
Federal law requires you to act as a fiduciary when you sponsor certain retirement plans, meaning you must put employee interests first when selecting investments and managing the program. You file Form 5500 annually for most 401(k) plans and ensure timely deposit of employee deferrals. Plans also require written documents, employee disclosures, and proper record keeping that you maintain for years.
How to choose the right plan for your team
Choosing the right retirement plans for employees starts with understanding your current workforce size and projected growth over the next three to five years. Companies with fewer than 10 employees typically benefit from SIMPLE IRA or SEP-IRA plans that minimize administrative burden. Businesses with 20 or more workers often find traditional 401(k) plans worth the added complexity because they offer higher contribution limits and more flexibility in employer contributions.
Match your budget to your plan type
Your decision hinges on how much you can contribute and what administrative costs you can sustain. If you want minimal employer contributions, a SEP-IRA lets you contribute only in profitable years. SIMPLE IRAs require mandatory contributions but keep setup costs low. Traditional 401(k) plans offer optional matching that helps you control costs while still providing a competitive benefit.
Start with what you can afford consistently, then upgrade your plan as revenue grows and your team expands.
Consider employee expectations and competitors
Look at what similar companies in your industry offer and what candidates ask about during interviews. If competitors provide generous 401(k) matches, you risk losing talent without something comparable. Survey your current team to understand which benefits matter most, then build a plan that addresses both retention and recruitment needs.
How to set up and run the plan smoothly
Setting up retirement plans for employees requires selecting a provider, completing paperwork, and integrating payroll systems within 30 to 90 days. You compare providers based on fees, investment options, and customer service quality, then sign plan documents that spell out eligibility rules, contribution formulas, and vesting schedules. Most providers offer implementation support that includes employee enrollment meetings and online account setup.
Partner with the right provider
You evaluate providers by requesting proposals from at least three firms and comparing their administrative capabilities alongside investment lineups. Established providers like Fidelity, Vanguard, and Charles Schwab offer comprehensive platforms with lower fees for small businesses. Your provider handles most compliance tasks, manages employee accounts, and processes contribution deposits, but you remain responsible as the plan sponsor for ensuring proper operation.
Choose a provider that assigns you a dedicated contact person who understands small business needs and responds quickly when issues arise.
Handle payroll integration and compliance
Payroll integration connects your existing system to the retirement plan provider so employee deferrals transfer automatically each pay period. You submit contributions within 7 business days of withholding them from paychecks, track employee eligibility as headcount changes, and maintain accurate records. Annual tasks include filing Form 5500, distributing required notices, and reviewing plan performance with your provider.
Next steps for a stronger benefits plan
You now understand the major types of retirement plans for employees, what they cost to run, and how to match the right option to your business stage. The next move involves getting quotes from providers, comparing plan features against your budget, and deciding on contribution levels that balance competitiveness with sustainability. Most employers underestimate the time required to properly administer these programs, particularly around compliance deadlines and employee communications.
Professional HR support makes the difference between a plan that runs smoothly and one that creates headaches. At Soteria HR, we help growing companies design and manage retirement benefits that attract talent without overwhelming your team. We handle provider selection, coordinate enrollment, and keep you compliant with federal requirements so you focus on running your business. Learn more about our benefits management services or reach out to discuss your specific retirement plan needs.
