Tax Coda

Tax Coda

Tax Court allows §183 business deductions for software venture

James D. Sullivan v. Commissioner. U.S. Tax Court. No. 15625-22. T.C. Memo. 2026-13.

Tax Coda's avatar
Tax Coda
Feb 09, 2026
∙ Paid

The Tax Court treated SelfChanger software work as a real profit-seeking venture, treated most Lincolnville land-development work as profit-motivated, and treated the “Leaf-Cutter” mulching Schedule C as a non-profit hobby loss.

Holding

The Court held that the Sullivans engaged in Traders Abacus’s software development activity for profit under §183 for 2017–2019. The Court also held they engaged in Traders Abacus’s home construction and land development activity for profit only as to the 47.71-acre parcel, not the 3.89-acre parcel. The Court held they did not engage in the Leaf-Cutter mulching activity for profit in 2019. The Court allowed deductions to the extent later substantiated, and it allocated 75% of home construction expenses to the profit-motivated parcel and 25% to the personal-use parcel.

Why It Matters

  • §183 profit motive fights often turn on boring facts. Books, records, business plans, and credible pivots still matter more than vibes.

  • Real estate development can qualify as pr…

User's avatar

Continue reading this post for free, courtesy of Tax Coda.

Or purchase a paid subscription.
© 2026 Tax Coda · Publisher Terms
Substack · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture