Retirement Plans for Self-Employed Workers: What to Choose

Being self-employed removes the automatic retirement-plan enrollment that many employees receive at work, but it also creates more choice.

Freelancers, consultants, sole proprietors, independent contractors, and small-business owners may be able to choose among a one-participant 401(k), SEP IRA, SIMPLE IRA, personal IRA, or a more advanced retirement plan.

Plan names can make the decision sound more complicated than it is.

Three questions can narrow the choice quickly:

1. Do you have employees other than your spouse?
2. How much of your business income do you realistically want to save?
3. How much administration are you willing to accept?

Those answers eliminate many unsuitable choices quickly.

Compare the Main Self-Employed Retirement Plans

Headline dollar limits do not mean every self-employed person can contribute the maximum. Business compensation, plan design, other retirement plans, age, and the special self-employed contribution calculation can all reduce the amount available.

Contribution limits also change over time. Figures above reflect federal limits for 2026.

Solo 401(k): Strong Flexibility for an Owner-Only Business

For federal tax purposes, this arrangement is a one-participant 401(k). Financial institutions may call it a Solo 401(k), Solo-k, individual 401(k), or Uni-k.

Solo 401(k) is not a separate legal category of retirement plan. In federal tax terms, it is generally a regular 401(k) covering a business owner with no common-law employees, or the owner and spouse.

Two contribution roles give the plan much of its flexibility.

You Contribute as the Employee

The basic 2026 elective-deferral limit for most 401(k) plans is $24,500.

Catch-up contributions, when permitted by the plan, work as follows:

• participants age 50 or older can generally contribute an additional $8,000; and
• participants who turn age 60, 61, 62, or 63 during 2026 can have a higher catch-up limit of $11,250 instead.

Your compensation or earned income still limits how much you can defer.

You Also Contribute as the Employer

Employer nonelective contributions can be added to the employee deferral.

Total defined-contribution plan additions generally cannot exceed $72,000 in 2026 before eligible catch-up contributions, and compensation limits still apply. Use the 401(k) Calculator to model contribution growth, while recognizing that self-employed employer contributions still require the applicable business-income calculation.

Self-employed sole proprietors and partners cannot simply use 25% of the number shown as business profit for the employer contribution. Eligible earned income must first be adjusted for the deductible portion of self-employment tax and the owner’s own plan contribution.

Designated Roth 401(k) contributions can also be permitted by the plan. Whether Roth contributions are available depends on the plan document and provider.

Solo 401(k) Administration Increases as the Plan Grows

A one-participant 401(k) generally must file Form 5500-EZ when plan assets reach at least $250,000 at year-end. Other filing situations can also apply, including plan termination.

Plan administration must also follow the governing plan document.

Once employees satisfy the plan’s eligibility requirements, the simple owner-only advantage disappears. Employee coverage can make the arrangement subject to the same coverage and nondiscrimination rules that apply to other 401(k) plans unless an applicable design exception applies.

SEP IRA: Simpler Administration and Flexible Employer Contributions

A Simplified Employee Pension, or SEP, lets an employer make contributions to SEP-IRAs established for the owner and eligible employees.

SEPs are relatively simple to establish and operate, and the employer generally has no annual federal filing requirement for the SEP itself.

Only the employer contributes.

That means there is:

• no employee salary-deferral contribution;
• no age-50 catch-up contribution under the SEP contribution rules; and
• no separate employee deferral on top of the employer contribution.

In 2026, SEP contributions cannot exceed the lesser of:

• 25% of the employee’s compensation; or
• $72,000.

Self-employed owners use a special net-earnings calculation. IRS Publication 560 provides the worksheet and reduced contribution rate needed to solve the circular calculation created by deducting the owner’s own contribution.

Why SEP Can Be Attractive

SEP flexibility can work well when:

• you want minimal plan administration;
• business profit varies significantly from year to year;
• you want the option to contribute more in strong years and less—or nothing—in weaker years; or
• you want to establish a plan relatively late in the tax-filing cycle.

Establishing a SEP can generally occur for a year as late as the due date, including extensions, of the business income tax return for that year.

The Employee Rule Can Make SEP Expensive

Eligible employees make a SEP less owner-centric.

Employer contributions must follow the plan’s allocation formula. Under a typical SEP, the employer must contribute the same percentage of compensation for all eligible participants when a contribution is made.

This is a major reason to evaluate employee costs before choosing a SEP simply because it is easy to open.

SIMPLE IRA: A Small-Employer Plan With Required Contributions

SIMPLE IRAs are designed for smaller employers and combine employee salary reductions with required employer contributions.

Eligibility generally extends to businesses with 100 or fewer employees who received at least $5,000 in compensation in the preceding year, subject to detailed eligibility rules. Maintaining another retirement plan at the same time is generally not permitted for the employer.

In 2026:

• the general employee salary-reduction limit is $17,000;
• a higher $18,100 limit applies to certain SIMPLE plans under SECURE 2.0;
• the general age-50 catch-up limit is $4,000; and
• participants age 60 through 63 can have a higher $5,250 catch-up limit.

Each year, the employer generally chooses one contribution formula, commonly:

• a matching contribution up to 3% of compensation; or
• a 2% nonelective contribution for eligible employees, even if an employee does not make salary-reduction contributions.

SECURE 2.0 added additional SIMPLE contribution options for qualifying employers, so a business using the newer enhanced contribution rules should follow the current contribution rules rather than relying on an older SIMPLE IRA summary.

When SIMPLE IRA Can Make Sense

Small employers may find a SIMPLE IRA attractive when they want:

• employee salary deferrals;
• mandatory but relatively straightforward employer contributions;
• no annual employer federal filing requirement for the SIMPLE IRA plan; and
• less administration than many conventional 401(k) arrangements.

Lower contribution limits and less plan flexibility are the main trade-offs compared with a full 401(k), while the employer still has a contribution obligation each year.

Plan loans are not permitted from SIMPLE IRAs. Early distributions can also have special rules: a distribution during the first two years of participation can be subject to a 25% additional tax instead of the usual 10% when an exception does not apply.

A Traditional or Roth IRA Can Still Belong in the Plan

Opening a Solo 401(k), SEP IRA, or SIMPLE IRA does not automatically make a personal IRA irrelevant.

The combined 2026 contribution limit across your Traditional and Roth IRAs is:

• $7,500 if under age 50; or
• $8,600 if age 50 or older, including the $1,100 catch-up.

Personal IRAs remain useful because:

• they are easy to open;
• they can supplement business-plan savings;
• a Roth IRA provides a different tax bucket when you qualify to contribute; and
• you control the investment provider independently from the business plan.

But the tax treatment depends on income and plan coverage. Compare Roth and Traditional IRA tax timing, and use the Roth IRA Calculator to model potential tax-free retirement growth under your assumptions.

Traditional IRA contributions can be nondeductible or have a deduction phased out when you or your spouse is covered by a retirement plan at work and income exceeds the applicable limits.

Direct Roth IRA contributions also have income limits. In 2026, the Roth IRA contribution phase-out is:

• $153,000 to $168,000 of modified AGI for single and head-of-household filers; and
• $242,000 to $252,000 for married couples filing jointly.

IRA contribution capacity is much smaller than the potential business-plan limits, so an IRA alone may not be enough for a high-income self-employed worker who wants to save aggressively.

If You Have a Day Job and a Side Business, Watch Shared Limits

Many employees who already have a 401(k) at work also earn self-employment income from consulting, freelancing, or another side business.

You may be able to establish a Solo 401(k) for the side business if it otherwise qualifies.

But you do not get a fresh employee elective-deferral limit simply because there are two plans.

The annual elective-deferral limit applies by person, not by plan.

Eligible side-business compensation may still support an employer contribution based on eligible business compensation, subject to the applicable plan and aggregation rules.

Multiple businesses can also create controlled-group or affiliated-employer issues. If you own related businesses, do not assume each business can be treated independently simply because it has a separate legal entity.

Your Business Structure Changes the Contribution Math

Contribution limits are often quoted as though every self-employed worker receives compensation in the same way.

Compensation rules differ by business structure.

Sole proprietors report business income differently from owner-employees of corporations. Partners use another compensation calculation.

For an unincorporated self-employed individual, plan compensation starts with net earnings from self-employment after reducing it by:

• the deductible portion of self-employment tax; and
• the individual’s own retirement-plan contribution.

This creates the circular calculation used for SEP and qualified-plan employer contributions.

Corporate employees generally use plan compensation that follows the plan’s definition of employee compensation, often based on W-2 wages under the applicable plan rules.

Publication 560 includes IRS worksheets for self-employed plan contributions. Tax software or a qualified tax professional can also be useful when business structure, multiple plans, or employees make the calculation more complex.

Employees Can Change the Best Plan Completely

Hiring the first employee can turn a strong solo plan into a poor fit.

Do not evaluate only your own maximum contribution.

Also compare:

• required contributions for employees;
• eligibility rules;
• vesting;
• annual notices;
• plan testing;
• tax filings;
• provider and recordkeeping fees; and
• how difficult it will be to change the plan later.

For owners with substantial, stable income who want to save considerably more than ordinary defined-contribution limits allow, a defined-benefit or cash-balance plan can sometimes provide much larger deductible contributions. Those plans require actuarial calculations and substantially more administration, so they are a specialist option rather than the default starting point for a freelancer.

Which Self-Employed Retirement Plan Should You Choose?

Use the following decision framework:

Consider a Solo 401(k) If…

• you have no common-law employees other than a spouse;
• you want to maximize contribution flexibility at moderate or high self-employment income;
• you value employee plus employer contribution capacity;
• you may want a designated Roth feature if your plan offers it; and
• you are comfortable with somewhat more administration.

Consider a SEP IRA If…

• simplicity is a priority;
• you want flexible employer contributions from year to year;
• you have no employees or are comfortable making required proportional contributions for eligible employees; and
• you do not need employee salary deferrals.

Consider a SIMPLE IRA If…

• you have a small business with employees;
• you want employees to make salary-deferral contributions;
• you accept required annual employer contributions; and
• you prefer simpler administration than many conventional 401(k) plans.

Consider a Personal IRA If…

• you want the simplest possible retirement account;
• your desired annual savings fit within the IRA limit;
• you want to supplement a business retirement plan; or
• you want to add Roth tax diversification and meet the applicable income rules.

You do not necessarily have to pick only one account.

One self-employed worker might use a Solo 401(k) plus a Roth IRA, for example. Each account solves a different part of the savings problem and has different contribution and tax rules.

Before deciding, calculate the amount you can actually contribute under each option using your business structure and compensation—not just the advertised maximum.

Once the account is chosen, the broader retirement savings target determines how aggressively it should be funded. Then use the Retirement Calculator to test whether the resulting contribution path is on track for the amount you expect to need.