Three carry-back notes and the installment reporting I assumed I had
I split 61 acres into five lots after plat approval, put in a gravel access drive and one culvert, and sold three of them on my own paper over about fourteen months. 78k, 84k and 91k. Ten percent down on each, 8.5%, twenty year amortization with a seven year balloon. Allocated basis was roughly 32k a lot, so call it 140k of gain across the three.
The whole reason I structured it that way was to spread the gain out over the note life and take the interest on top. My CPA's position after the fact was that the platting, the improvements, and selling three parcels inside a year made those lots dealer property in his read, and installment reporting isn't available on a dealer disposition. Full gain in the year of each sale, at ordinary rates, plus self-employment exposure he wanted to argue about. Anyone reading this should get their own CPA's read, because his was fact specific and he said so.
Cash I actually collected across that period: 25,300 in down payments, about 7,100 of principal, roughly 16,000 of interest. Combined federal and state came to just over 52k. I covered the gap by dumping lot four for 68k cash when I'd been holding out for 89k. So the tax structure I built the deal around cost me about 21k on a lot I never intended to discount.
What I'd do differently: get the classification question answered in writing before the first lot closes, not after the third one funds. And if the answer is dealer, price the notes knowing the tax lands up front.