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Schedule C
Schedule C

Schedule CProfit or Loss From Business (Sole Proprietorship)

19 — Pension and Profit-Sharing Plans Updated for tax year 2025

Does this apply to you?

  • You set up a SIMPLE IRA for employees and make required employer matching or nonelective contributions
  • You contribute to a SEP IRA on behalf of employees
  • You sponsor a 401(k) plan and make employer matching contributions for employees
  • You maintain any qualified retirement plan and fund employer contributions for employees

Easy to overlook

Your own SEP or solo 401(k) contribution does not go here As a sole proprietor, your own retirement contributions are deducted on Schedule 1 of Form 1040, line 16 (SEP, SIMPLE, qualified plans). Putting your own contributions on Schedule C line 19 improperly reduces your self-employment income and self-employment tax. This is a common error the IRS catches. 1 IRS Schedule C instructions — Line 19

SIMPLE IRA mandatory employer contributions If you set up a SIMPLE IRA, you are required to either match employee contributions dollar-for-dollar up to 3% of compensation, or make a nonelective contribution of 2% of each eligible employee’s compensation. These mandatory employer contributions are deductible here. Failing to make required contributions triggers excise taxes. 2 IRS Publication 560 — Retirement Plans for Small Business

Watch out for this

Deducting your own retirement contributions on Schedule C line 19 instead of Schedule 1 of Form 1040. This incorrectly reduces your self-employment income. Your own contributions reduce income tax but do not reduce self-employment tax — the Schedule 1 deduction handles this correctly. The Schedule C line handles it incorrectly.

Footnotes

  1. IRS Schedule C (Form 1040) Instructions, Line 19. https://www.irs.gov/instructions/i1040sc

  2. IRS Publication 560, Retirement Plans for Small Business. https://www.irs.gov/pub/irs-pdf/p560.pdf

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