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The Daily Insight

Can a partnership use a Solo 401k?

Author

Henry Morales

Published Apr 07, 2026

In order to qualify for a solo 401k, self-employment activity is required. Therefore, a self-employed business owner, a partnership, a limited liability company (LLC), or any type of corporation (including a Subchapter S corporation) may adopt a self-directed solo 401k plan.

Do I need to take RMD from Solo 401k if still working?

Yes, even if you continue working past age 72,* you have to take an RMD from your IRA. However, you may qualify for an exception from taking RMDs from your current employer-sponsored retirement account, such as a 401(k), 403(b), or small-business account, if: You’re still working.

Where does solo 401k go on tax return?

Sole proprietors and partners deduct Solo 401k contributions for themselves on line 28 of Form 1040, U.S. Individual Income Tax Return.

Can a W2 employee have a Solo 401k?

If you are not self-employed (or own a small business) – you are not eligible to establish a Solo 401k plan. Further, if you were eligible, contributions to a Solo 401k plan can only be made from the earned self-employment income. Your W2 wages from employment can not be contributed into Solo 401k.

Who is the sponsor of a Solo 401k plan?

The solo 401k plans is established by the partnership as a business entity, not by each partner individually. Therefore, the partnership is the sponsor of the solo 401k plan.

How to calculate Solo 401k contribution for partnership?

You may also visit solo 401k contribution calculator. As defined in Code 1402 and 401 (c) (2), a partner’s earned income is the income she receives for her services to materially help produce that income. A partner is required to separately calculate her earned income for each trade or business.

Who is a partner in a partnership 401k plan?

Client is a partner in a Partnership. She contributed $19000 to a 401k plan set up by the Partnership. The Partnership made a matching contribution of … read more I am finalizing my tax return for 2018. I own a partnership. I am finalizing my tax return for 2018.

Can a Solo 401k be a pass through?

In addition, because pass-through compensation is not subject to self-employment tax, shareholder/employees’ tax burden is even further reduced. An S corporation’s solo 401k plan cannot base contributions on their pass-through income.