2018 Solo 401(k) Contribution Steps, Deadlines, and Rules

Image of a red thumbtack on the December 31 date of a calendar.As 2018 comes to an end, it is critical that Solo 401(k) owners understand when and how to make their 2018 contributions. There are three important deadlines you must know if you have a Solo 401(k) or if you plan to set one up still in 2018. A Solo 401(k) is a retirement plan for small business owners or self-employed persons who have no other full time employees other than owners and spouses. It’s a great plan that can be self-directed into real estate, LLCs, or other alternative investments, and allows the owner/participants to contribute up to $55,000 per year (far faster than any IRA).

New Solo 401(k) Set-Up Deadline is 12/31/18

First, in order to make 2018 contributions, the Solo 401(k) must be adopted by your business by December 31st, 2018. If you haven’t already adopted a Solo 401(k) plan, you should start now so that documents can be completed and filed in time. If the 401(k) is established on January 1st, 2019 or later, you cannot make 2018 contributions.

2018 Contributions Can Be Made in 2019

Both employee and employer contributions can be made up until the company’s tax return deadline including extensions. If you have a sole proprietorship (e.g. single member LLC or schedule C income) or C-Corporation, then the company tax return deadline is April 15th, 2018. If you have an S-Corporation or partnership LLC, the deadline for 2018 contributions is March 15th, 2019. Both of these deadlines (March 15th and April 15th) to make 2018 contributions may be extended another six months by filing an extension. This a huge benefit for those that want to make 2018 contributions, but won’t have funds until later in the year to do so.

W-2’s Force You to Plan Now

While employee and employer contributions may be extended until the company tax return deadline, you will typically need to file a W-2 for your wages (e.g. an S-Corporation) by January 31st, 2019. The W-2 will include your wage income and any deduction for employee retirement plan contributions will be reduced on the W-2 in box 12. As a result, you should make your employee contributions (up to $18,500 for 2018) by January 31st, 2019 or you should at least determine the amount you plan to contribute so that you can file an accurate W-2 by January 31st, 2019. If you don’t have all or a portion of the funds you plan to contribute available by the time your W-2 is due, you can set the amount you plan to contribute to the 401(k) as an employee contribution, and will then need to make said contribution by the tax return deadline (including extensions).

Example

Now let’s bring this all together and take an example to outline how this may work. Sally is 44 years old and has an S-Corporation as an online business. She is the only owner and only employee, and had a Solo 401(k) established in 2018. She has $120,000 in net income for the year and will have taken $50,000 of that in wage income that will go on her W-2 for the year. That will leave $70,000 of profit that is taxable to her and that will come through to her personally via a K-1 from the business. Sally has not yet made any 2018 401(k) contributions, but plans to do so in order to reduce her taxable income for the year and to build a nest egg for retirement. If she decided to max-out her 2018 Solo 401(k) contributions, it would look like this:

  1. Employee Contributions – The 2018 maximum employee contribution is $18,500. This is dollar for dollar on wages so you can contribute $18,500 as long as you have made $18,500. Since Sally has $50,000 in wages from her S-Corp, she can easily make an $18,500 employee contribution. Let’s say that Sally doesn’t have the $18,500 to contribute, but will have it available by the tax return deadline (including extensions). What Sally will need to do is let her accountant or payroll company know what she plans to contribute as an employee contribution so that they can properly report the contributions on her payroll and W-2 reporting. By making an $18,500 employee contribution, Sally has reduced her taxable income on her W-2 from $50,000 to $31,500. At even a 20% tax bracket for federal taxes and a 5% tax bracket for state taxes that comes to a tax savings of $4,625.
  1. Employer Contributions – The 2018 maximum employer contribution is 25% of wage compensation. For Sally: Up to a maximum employer contribution of $36,500. Since Sally has taken a W-2 wage of $50,000, the company may make an employer contribution of $12,500 (25% of $50,000). This contribution is an expense to the company and is included as an employee benefit expense on the S-Corporation’s tax return (form 1120S). In the stated example, Sally would’ve had $70,000 in net profit/income from the company before making the Solo 401(k) contribution. After making the employer matching contribution of $12,500 in this example, Sally would then only receive a K-1 and net income/profit from the S-Corporation of $57,500. Again, if she were in a 20% federal and a 5% state tax bracket, that would create a tax savings of $3,125. This employer contribution would need to be made by March 15th, 2019 (the company return deadline) or by September 15th, 2019 if the company were to file an extension.

In the end, Sally would have contributed and saved $31,000 for retirement ($18,500 employee contribution, $12,500 employer contribution). And she would have saved approximately $7,750 in federal and state taxes. That’s a win-win.

Keep in mind, you need to start making plans now and you want to begin coordinating with your accountant or payroll company as your yearly wage information on your W-2 (self employment income for sole props) is critical in determining what you can contribute to your Solo 401(k). Also, make certain you have the plan set-up in 2018 if you plan to make 2018 contributions. While IRAs can be established until April 15th, 2019 for 2018 contributions, a Solo K must be established by December 31st, 2018. Don’t get the two confused, and make sure you’ve got a plan for your specific business.

Note: If you’ve got a single member LLC taxed as a sole proprietorship, or just an old-fashioned sole prop, or even or an LLC taxed as a partnership (where you don’t have a W-2), then please refer to our prior article here on how to calculate your Solo K contributions as they differ slightly from the s-corp example above.

Three Instances of When You Need a New Subsidiary Entity for Your Business

Photo of an empty, minimalist boardroom overlooking an empty field.Are you growing your business? Adding new products or services? New locations? Adding partners or owners? If so, these are all instances when you should consider setting up a subsidiary or other new entity for your existing company. While you can run multiple streams of business through one entity, there are tax, asset protection, and partnership reasons why you may want to open up a new subsidiary entity for your new activity.

Let’s run through a few common situations when it makes sense to open up a subsidiary entity. And by subsidiary, I mean “a new entity which is owned wholly or partly by your primary business entity or by a common holding company.” Your new subsidiary could result in a parent and child relationship where your primary entity (parent) owns the new subsidiary entity (child), or it could be a brother and sister type structure where the primary business is a separate entity (brother) to the new entity (sister) and the two are only connected by you or your holding company that owns each separately and distinctly. (See the diagrams below to view the differences.)

I. Adding a New Product or Service

You may want a new entity to separate and differentiate services or products for liability purposes. For example, let’s say you are a real estate broker providing services of buying and selling properties and you decide to start providing property management services. Because the property management service entails more liability risk, a new entity owned wholly by your existing business could be utilized. The benefit of the new subsidiary is that if anything occurs in the new property management business, then that liability is contained in the new subsidiary and does not go down and affect your existing purchase and sale business. On the other hand, if you ran the property management services directly from the existing company without a new subsidiary and a liability arose, then your purchase and sale business that is running through the same entity would be effected and subject to the liability.

For tax purposes, in this instance, the income from the new subsidiary entity (child) will flow down to the parent entity without a federal tax return, and as a result, there is no benefit or disadvantage from a tax planning standpoint.

 

Diagram displaying the Parent-Child Subsidiary structure

 

II. Opening a New Location

What if you’re establishing a new retail or office location for your business? Let’s say you are a restaurant opening up your second location. For asset protection purposes, you should consider setting up a second entity for the new location. This can limit your risk on the lease (don’t sign a personal guarantee) for the new location or for any liability that may occur at the new location. In this instance, if one location fails or has liability, it won’t affect the other location as they are held in separate entities. The saying goes, “don’t put all your eggs in one basket.” In this case, the basket is the same entity and the locations are your eggs.  In the multiple location scenario, you should consider the brother-sister subsidiary structure such that each location is owned in a brother-sister relationship (e.g. neither owns the other) and their common connection is simply the underlying company (or person) who owns each entity for each location. Because both locations have risk it is useful for each to have their own entity and not to own each other (as can occur in the parent-child subsidiary). When structured in a brother-sister relationship, the liability for each location is contained in each subsidiary entity and cannot run over into the other subsidiary entity (the sibling entity) or down to the owner (which may be you personally or your operational holding company).

For tax purposes, the brother and sister subsidiary income (usually single member LLCs) flows down to the parent or primary entity where a tax return is filed (usually an S-Corp). (See the diagram below for an illustration.)Diagram displaying the Brother-Sister Subsidiary structure

III. Adding a New Partner

Maybe you’re starting a new business or operation where you have a new partner involved. If this partner isn’t involved in your other business activities or your existing company, it is critical that a new entity be established to operate the new partnership business. If you have an existing entity where you run business operational income (e.g., an S-Corporation), then this entity may own your share of the new partnership entity (e.g., an LLC) with your new partner. Your share of the new partnership income flows through the partnership to your existing business entity where you will recognize the income and pay yourself. In this instance, your existing entity is the parent and the new partnership is a partial-child subsidiary. The new partnership entity will typically file a partnership tax return.

IV. California Caveat

Because of gross receipts taxes in California, you may use a Q-Sub entity model where the subsidiary entity is actually another S-Corporation and is called a Q-Sub. This is available only when the parent entity is an S-Corporation and can avoid double gross receipts tax at the subsidiary and parent entity level.

Make sure you speak to your tax attorney for specific planning considerations as there are asset protection and tax considerations unique to each business and subsidiary structure.