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The Daily Insight

Are 401 K contributions deducted from gross income?

Author

Sarah Duran

Published Apr 04, 2026

Traditional 401(k) contributions effectively reduce both adjusted gross income (AGI) and modified adjusted gross income (MAGI). 1 Participants are able to defer a portion of their salaries and claim tax deductions for that year.

Can I contribute to both 401k and solo 401k?

The solo (401) allows you to pay yourself twice, both as the employer and as the employee. The “employee” contribution you can make is limited to $19,500. It’s important to note that “employee” contributions are aggregated across all your retirement income plans; you can’t double-up here.

How do I report 401k contributions to AK 1?

For these to appear on line 28 of Form 1040, your Schedule K-1 must show with code R in box 13 the total amount of contributions made through the partnership and with code A in box 14 your Net Earnings (Loss) From Self-Employment.

Can partners have a solo 401k?

Partnership: Partners of a partnership are also self-employed individuals. 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.

Do you have to report K-1 income for 401k?

As someone already pointed out, the k-1 income must be “earned income” within the meaning of IRC Section 401©(2). If the p/s is throwing off income that is not “earned income” (and, therefore, not subject to the self-employment tax), it is reported on the k-1 but it cannot be counted for qualified plan purposes.

How to calculate 401k contribution from K-1 passthrough?

To calculate the 401K deduction from income flowing from an Individual’s passthrough, self-employment income must be entered. For a Partnership (1065) passthrough: Go to Federal Interview Form K-1 – K-1 General, Income, Deductions, Investment Interest & SE Information.

What kind of income can you claim on Schedule K-1?

That’s because a partner can earn several types of income on Schedule K-1, including rental income from a partnership’s real estate holdings and income from bond interest and stock dividends. It’s also possible that K-1 income can trigger the alternative minimum tax.

What to do if your retirement contribution is wrong on your K-1?

If the retirement contributions are reported incorrectly on the K-1, contact the preparer of the K-1 to obtain a correction. Otherwise, you can make entries directly in the Self-employed retirement section of TurboTax provided that your Schedule K-1 (Form 1065) shows with code A in box 14 the correct amount of net earnings from self-employment.