Self-Employed Retirement Plans: Solo 401(k) Plan

by Ryan on December 18, 2008

This article is part of a series on self-employed retirement plans, and was written by Robert D. Flach. Robert has been preparing business and individual tax returns for people in all walks of life since 1972. He writes the tax blogs THE WANDERING TAX PRO and the NJ TAX PRACTICE BLOG.

Article assumptions: Self-employed individuals have many types of retirement plans from which to choose. While these plans are available regardless of the type of business “entity” chosen, I will be discussing them from the point of view of the Schedule C filer. In such a situation the determination of the amount of the allowable contribution begins with the “net profit” reported on Line 31 of Schedule C or Line 3 of Schedule C-EZ.

All of the retirement plans that I will discuss are available to the one-man business with no employees, and I will limit my discussion to the contributions of the business owner. However these plans will require coverage of any qualifying W-2 employees of the business, and special rules will apply to contributions for employees.

Solo 401(k) Plan

A recently added self-employed retirement plan option is the Single-Participant 401(k) Plan, also called a Solo 401(k). The Solo 401(k) was created by the Economic Growth and Tax Reconciliation Act of 2001, and is similar to a traditional 401(k) plan that would be offered by a corporation or other large business. However, the Solo 401(k) plan is designed for a self-employed individual and requires less administrative upkeep compared to the corporate version of the 401(k).

Solo 401(k) plan eligibility. The Solo 401(k) plan is only available to an individual business owner and his/her spouse. Part time workers that work less than 1,000 hours per year are excluded. If you have full-time employees, you will need to select another self-employed retirement plan.

Plan establishment and contribution deadlines. Like the Keogh Plan, a Single-Participant 401(k) must be established by December 31st.  And, also like a Keogh Plan, an annual Form 5500 is required when your plan reaches $250,000 in assets. You have until the tax filing deadline (plus extensions) to make contributions.

Contribution limits. The Single-Participant 401(k) allows for a combination of “employee” deferral of up to the regular 401(k) maximums, $15,500 with a $5,000 catch-up for 2008 and $16,500 with a $5,500 catch-up for 2009, and a discretionary employer match of up to 25% of compensation (20% of net earnings as with the SEP IRA and other plans).  The combined maximum cannot exceed $46,000 for 2008 and $49,000 for 2009 plus the appropriate “catch-up” additions if applicable.

Example Solo 401(k) contribution:

Let us say that for 2008 John Q Proprietor, a 53 year-old Schedule C filer, had $60,000 in net earnings from self-employment after the ½ of SE tax deduction.  With a SEP IRA John can contribute $12,000 ($60,000 x 20%).  However, with a single-participant 401(k) plan John can make a $20,500 “elective deferral contribution” as an “employee” and a $12,000 “employer” contribution, for a total of $32,500.

IRS Publication 560 (Retirement Plans for Small Business) has a worksheet to determine the deductible amount of contributions to a single-participant 401(k).

Benefits of Solo 401(k) plans

Minimal administrative work. The associate paperwork is easy to file and maintain.

Discretionary contributions; immediate vesting. Members are not required to contribute to their Solo 401(k) account. Your contributions are 100% vested immediately.

Traditional and Roth options. The Solo 401(k) plan comes in two flavors – traditional and Roth. Like Traditional and Roth IRAs, the different versions of the Solo 401(k) give you different options for managing your taxes both now and in the future.

Maximize retirement contributions. Depending on your income, the solo 401(k) gives you the potential to put away more of your income than the SEP IRA, which has the same maximum contribution limit ($46,000 in 2008). Like the SEP IRA, Solo 401(k) plan owners can contribute 25% of their compensation as profit sharing, but Solo 401(k) plan owners can also contribute up to the first $15,500 as tax deferred contributions. So unless you can max out the entire $46,000 with a SEP IRA, the Solo 401(k) will allow you to contribute more money toward retirement.

Here is more information about Self-Employed Retirement Plans.

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{ 24 comments… read them below or add one }

1 Miranda December 18, 2008 at 8:15 am

The one I’ve been waiting for! Next year’s big goal is to open a Roth solo 401(k). I’m getting very excited about this…

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2 Ryan December 18, 2008 at 10:32 am

Miranda: you can actually open one this year as long as you send in your paper work before December 31st. You would have until the tax deadline to make any contributions, so you could contribute some this year and some next year.

I just opened a Solo 401k via Vanguard, and the process was easy – though I did call customer service to go over a few details. They were very helpful.

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3 Miranda December 18, 2008 at 9:19 pm

Actually, I’m not concerned about the tax stuff for this year. I just want the Roth option :0) Which I will greatly enjoy next year.

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4 Dalton December 21, 2008 at 1:04 am

I have a Sep, i sell/ buy stock inside the account,my question is: Can my Sep own real estate? I’mtold you can but how?

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5 Ric Hinkie October 14, 2009 at 8:59 pm

Dalton, I have an all paid for rental home in my IRA. The IRA owns it, and rent is paid to the administrator. Entrust Midwest LLC is a very reasonable and trustworthy administrator. They pay the insurance, taxes, etc. I still find the renters, but can not handle any of the money.

The cool thing is that the rent goes in like an extra IRA contribution, that I could not make myself as I am maxed out. When I need to take a distribution from the IRA, the money will come out to me, but my principal…in this case the house is still an asset that will always be there. I can also always sell it and the appreciation adds to my IRA’s value. The only down side is the expenses and appreciation are not deductible, but the other benefits outway this.

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6 Ryan December 21, 2008 at 10:49 am

Dalton: I believe it can be done, but I don’t know the details. Here is a little information about it: http://www.realtor.org/archives/featuresept03ira

After reading the article, it appears as though it is complicated and out of the scope of my knowledge. This article is for general information and I’d recommend contacting an accountant or retirement plan specialist for your specialized needs.

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7 Ric Hnkie December 16, 2009 at 6:54 pm

In 2010 it may make sense to either convert a house already in a realestate IRA or to buy real estate into the Solo Roth. If you are converting regular 401k or IRA money into a regular Roth, you have two years to pay taxes on the conversion (the amount of money you pay for the real estate). Again this is based on advice from CPA, but we anticipate converting at least one home. The rent income goes into the Roth like an additional contribution. Can’t take it our for 5 years, but that is OK as the house should increase in value and the rent income also builds the value of the Roth. Then when you need it it comes out tax free.

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8 Ric December 30, 2008 at 7:20 pm

Yes, you can have realestate in an IRA. I have a rental house in mine and my wife has one too. The advantages are that the rental income becomes an added contribution to the IRA that is not subject to limits of contribution. It is treated like it was a dividend or gain in stock price.

The key is to find a place that will handle all the details for you at a low price. You can not accept money from the renters directly, it must go to a manager “for the benefit of YOU and your account number must be on the checks”.

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9 Greg February 12, 2009 at 11:44 am

Would I have had to establish a solo 401k during 2008 to take advantage of it for my 2008 taxes?

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10 Ryan February 12, 2009 at 11:49 am

Greg: Yes, you would have had to establish the Solo 401(k) account by Dec 31, 2008 to take advantage of it for your 2008 taxes. However, as long as it is established, you can contribute to it up to the tax deadline to lower your 2008 tax obligations.

If you missed the deadline, I would encourage you to start looking for a company to maintain your solo 401(k) now so you don’t get rushed trying to do it at the end of this year.

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11 Sham April 18, 2009 at 1:20 pm

Since I didn’t open solo 401(k) before 12/31/08 and I made contribution to 401K (wrong advice from my broker) in 2008 return & submitted. Now, can I file 1040-x to switch from solo 401 K to SEP IRA to recify the mistake.

Thanks,

Sham

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12 Mike May 8, 2009 at 10:38 pm

I’ve already contributed to a SIMPLE IRA for 2009. Am I allowed to also contribute to a solo 401(k) during the same tax year?

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13 Ryan May 9, 2009 at 11:44 am

Mike: I don’t believe there are any restrictions that prevent you from having both plans, but there are restrictions regarding how much money you can invest in tax deferred retirement accounts each year. I’d recommend visiting a professional CPA or other person well versed in tax laws for more information. Best of luck to you.

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14 David October 14, 2009 at 2:42 pm

What would be the best plan for me? I am a 51 year old self-employed rancher and investor. The ranching business generally reports a loss. Most of my income comes from investments in stocks, bonds, oil & gas both working interest and royalty interest. I also have some income from a bookkeeping business on schedule C. I am expecting a large amount of income on schedule E for this year and the next. I’m looking for the best way to defer the taxes on my income for the next couple of years.
David

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15 Ryan October 14, 2009 at 2:46 pm

David, Your situation is fairly complicated and requires a professional tax advisor and/or financial planner – someone who can dig into your books, run some numbers, and come up with a plan to help you both now and in the future.
I recommend looking for someone in your area that has experience working with situations similar to yours.

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16 Jeff December 16, 2009 at 3:40 pm

If I want to make contributions for 2009 for both my wife and myself [we are eligible to do this] do I need to open seperate Solo 401K accounts for both of us prior to 01/01/2010?

Also, what do you think about companies who claim they can st-up accounts that offer “check-book control”. Is this legitimate in you opinion?

Thanks,

Jeff

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17 Ryan December 16, 2009 at 3:43 pm

I opened one account for both my wife and I, but it is a joint account. Contact your 401k provider for more information. And yes, the account needs to be opened by December 31st, but you can make contributions up to the filing deadline, or October 15th if you file for an extension, otherwise April 15th.

I’ve never heard of “check-book control,” but it sounds like something you could do yourself through careful management.

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18 Ric Hnkie December 16, 2009 at 6:37 pm

To the question about both spouses and year end 2009 contributions to a Solo 401k. First, yes the contributions must be made by year end. Second, when I set mine up a year ago, I set it up as an employer. Edward Jones has a boiler plate plan. So this year my wife worked independently with me. Therefore, I had to amend the plan to add her to it. Now I will make my contribution (consulting income-expenses) for 2009 and here contribution will be made on the same basis. This is the advice from my CPA and money manager.

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19 John Mazzei March 16, 2010 at 6:04 am

I have a question about the spousal contribution. Do you have to go through the formality of paying your wife in order for her to be able to participate in your self-employed 401k? If so, do you have to pay pay-roll taxes on the amount you pay her? From a SS standpoint, I already contribute the max SS contribution per year for myself and I would rather not have to contribute more SS tax on behalf of my wife unless I have to.

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20 Ryan March 16, 2010 at 9:14 am

John, great question. Based on my understanding, your wife must be employed to be eligible for Solo 401k contributions. I don’t think that necessarily means that she needs a W-2 because you can be a sole proprietor and not issue W-2s. However, if you already have that payroll system set up for your company, then it might be required. This is a situation where I recommend speaking with your accountant for more details about contribution requirements.

And paying additional Social Security tax isn’t necessarily a bad thing. My wife helps with my business, so I pay her a salary and from that we contribute to her Solo 401k. While it’s true we do pay additional SS tax on her salary, she also gets SS tax credits working toward her SS benefits for when she retires. Something to keep in mind.

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21 Ric Hinkie March 17, 2010 at 3:58 pm

Just to add to my earlier comment. Solo401ks are available for self employed people. Therefore, the husband can have one and so can the wife if she also has self employed income. As mentioned earlier, I set up the plan with Edw Jones and defer a portion of my consulting income (I am otherwise retired and draw SS). My wife works with me part of the time. Her income can also be deferred and contributed to the plan. Yes, both of us have to pay into SS and Medicare, but the long term benefits of having the Roth outway that cost for us.

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22 Mike December 16, 2009 at 8:30 pm

Looking to establish a Roth Solo 401k next year but my broker (TDAmeritrade) isn’t planning on offering one. Bummer…

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23 Ryan December 17, 2009 at 2:53 pm

Mike, Solo 401k plans need to be established by the end of the calendar year, so if you are planning on establishing on for 2010, it is possible they may offer it by the end of the year. I have mine with Vanguard, and I opened it last year, which was the first year they offered it. Fidelity also offers a Solo 401k plan, and they are a top notch firm to deal with.

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24 bonnie johnson February 2, 2010 at 12:38 pm

could you email some information on solo and roth solo k. thanks

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