Self-Employed Retirement Plans

Choosing your first self-employed retirement plan when you have no employees

For a one-person business, the best retirement plan for a self-employed person with no employees usually comes down to a Solo 401(k) or a SEP-IRA, two of the most powerful self-employed retirement plans available. The right pick hinges on your current income. A Solo 401(k) lets you wear both hats. Then you add an employer profit-sharing amount. This often means you can save more at lower or moderate earnings than you could with other structures. By contrast, a SEP-IRA keeps things simple by treating you purely as the employer. This is where many owners first want to understand how a SEP-IRA work and what are the contribution limits so they can compare it directly to the dual-role math of a 401(k).

Once you start running the numbers, the solo 401(k) vs sep-IRA comparison tends to narrow at higher income. The 401(k) reaches that ceiling faster on a smaller paycheck. If you have been considering a sep-IRA vs simple IRA for an LLC you own alone, the SIMPLE IRA becomes the least flexible option. The IRS still requires either a 3% matching contribution or a 2% nonelective contribution for eligible employees. That employer obligation adds paperwork and cost without meaningfully increasing your own savings ceiling. While you are not locked into one choice forever, start with a plan that matches your income pattern. Skip the SIMPLE IRA entirely if you want the highest possible personal savings ceiling and no mandatory employer funding.

Setting up your plan and calculating what you can put in

When you are ready to move from comparison to action, you can set up a solo 401(k) step by step before the tax deadline by choosing a provider and adopting the plan documents before your filing date. Remember the fundamental rule that you must have net earnings from the self-employment trade or business for which the plan was established. Once the plan is in place, you wear two hats to calculate the maximum solo 401(k) contribution as both employer and employee. As the employee, you can defer up to 100% of your compensation, subject to the annual elective deferral limit set by the IRS. Check the current limit on the IRS website. Then add an employer nonelective contribution of up to 25% of your compensation as defined by the plan. The combined total is capped by the overall annual additions limit, which the IRS adjusts periodically. Confirm the current figure directly from the official IRS publications. The math gets a layer more interesting if you also have a W-2 job, because you can contribute to a SEP-IRA if I already have a W-2 401(k) based purely on your self-employment income from the business covered by that plan. The elective deferral cap applies across all your plans. However, the employer-side contributions are calculated separately for each unrelated business. If your earnings swing dramatically from year to year, a freelancer with variable income still use a defined benefit plan as long as the funding amount is determined by an actuary. The actuary bases it on the benefit you select and factors like your age and expected returns. This locks in a high funding level in good years but demands careful cash-flow planning for the lean ones. Book a consultation with a third-party actuary before year-end to model your commitment. Arrive at that meeting with your last three tax returns. Skip providers that push a one-size-fits-all formula without a personalized actuarial certification.

Fixing mistakes and handling life changes that affect your plan

Even the most carefully managed plan can hit a snag. The cost of ignoring it is usually a penalty. If you realize you put too much money in, you need to act fast. The process to fix an excess contribution to a SEP-IRA or solo 401(k) before the penalty hits hinges on timing and the type of error. For a SEP-IRA, distribute the excess plus any earnings back to yourself as the employer. Report that corrective distribution on Form 1099-R with a taxable amount of zero, and return the amount to yourself as the employer. This avoids a double tax hit. Inside a solo 401(k), the IRS prescribes a specific correction order when both employee deferrals and employer profit-sharing deposits push past the annual additions limit set by the IRS. Unmatched deferrals come out first. Then matched deferrals come out with a forfeiture of the related match. Finally, any remaining employer profit-sharing amounts are removed.

A change in headcount is the most common reason a plan needs a structural fix. Book a call with a third-party administrator immediately to understand what happens to my solo 401(k) if I hire an employee or stop being self-employed. This prevents an accidental disqualification. The plan does not break the moment you make a hire. Eligibility typically kicks in after that employee completes one year of service and 1,000 hours, or 500 hours per year in two consecutive years for some employees. At that point, the plan is no longer a one-participant arrangement. You must amend or terminate it. If you shut down the business entirely, terminate the plan and move the assets via a direct trustee-to-trustee rollover into a rollover IRA. As your balance grows, you also need to know the filing requirements for form 5500-ez and when does a solo 401(k) trigger an audit. The hard rule is straightforward. You must file Form 5500-EZ once your plan assets exceed the mandatory filing threshold at the end of the plan year. You must keep filing in future years even if the value later drops below that level.