Solo 401k Set up / Adoption Deadline is December 31

For those who are self-employed (i.e., own their own business with no, full-time, W-2 employees), an important deadline is approaching (in less than 60 days) that will afford the self-employed business owner(s) the opportunity to save thousands of dollars in taxable income for tax year 2017.   If you are self-employed and open a solo 401k plan by December 31, 2017, you will be able to wait until next year (2018) to contribute $54,000 plus an additional $6,000 if you turn 50 in 2017 or are already over age 50.  Yes you read this correctly. Specifically, you just need to sign the solo 401k adoption documents to be able to wait until your business tax return due date plus timely filed extensions to make both the profit sharing and employee contributions for tax year 2017.

A solo 401k is not subject to Department of Labor rules because a solo 401k is for owner-only businesses with no common-law employees. As a result the contribution deadlines are more favorable for a solo 401k. For example, as long as the solo 401k is set up/adopted by December 31, both the salary deferral and employer contributions can be made up until the due date of the self-employed business tax return plus any timely filed extensions. See the following chart found on page 3 of IRS Publication 560- Retirement Plans for Small Businesses.

When looking at the chart, look at the row labeled “Defined Contribution Plan” as a solo 401k plan falls under this umbrella.

Type of PlanLast Date for Contribution Maximum Contribution When To Set Up Plan
Qualified Plan: Defined Contribution PlanElective deferral: Due date of employer’s return (including extensions)Employer contribution: Money Purchase or Profit­Sharing: Due date of employer’s return (including extensions).Employee contribution: Elective deferral up to $18,000, $24,000 if age 50 or over.Employer contribution: Profit­Sharing:: Smaller of $53,000 or 100% of participant’s compensation.By end of the tax year.
Qualified Plan: Defined Benefit PlanContributions generally must be paid in quarterly installments, due 15 days after the end of each quarter. See Minimum Funding Requirement in chapter 4.Amount needed to provide an annual benefit no larger than the smaller of $210,000 or 100% of the participant’s average compensation for his or her highest 3 consecutive calendar years.By end of the tax year.

About Mark Nolan

Each day I speak with energetic entrepreneurs looking to take the plunge into a new venture and small business owners eager to take control of their retirement savings. I am passionate about helping others find their financial independence. Having worked for over 18 years with some of the top retirement account custodian and insurance companies I have a deep and extensive knowledge of the complexities of self-directed 401ks and IRAs as well as retirement plan regulations. Learn more about Mark Nolan and My Solo 401k Financial >>

  • About MySolo401k

    We help our clients take control of their retirement money. Our products and services provide our clients the freedom to invest their retirement savings in their own business as well as alternative investments such as real estate, private companies, promissory notes, precious metals, tax liens and equities.
    Learn more

    Connect with us

  • We’re here to help.

    Call: 800-489-7571


    7:00 am - 5:00 pm PT

    Why us?