Wisconsin
Reviewed July 2026Federal §453 conformity
Yes — Wisconsin starts from the federal return and taxes installment gain as payments arrive, but with a discount most summaries bury: 30% of long-term capital gain is excluded, and 60% for qualifying farm assets. That takes the effective top rate on ordinary business-sale gain to roughly 5.4%, and on qualifying farm gain to about 3.1%. The note's interest, by contrast, is ordinary income at full rates — the same principal-versus-interest distinction that matters in Hawaii matters here.
Nonresident sourcing
Gain from Wisconsin real estate or a business operating in Wisconsin is Wisconsin income for sellers anywhere, and the payments keep that character — with the exclusion applying to nonresidents' Wisconsin gain the same as residents'. Intangible gain generally follows the seller home.
Withholding
Wisconsin imposes no closing-table withholding on nonresident real estate sellers. The obligation sits at the entity: pass-throughs withhold on nonresident owners' Wisconsin income unless a composite filing or the PTE election covers it.
Selling, then moving (residency change)
Wisconsin-source gain stays taxable here after a move; other gain travels with the seller, and no rule accelerates deferred gain at the border. The exclusion softens both directions — the state's claim on source gain, and the cost of arriving mid-stream.
Pass-through entity (PTE) tax election
Wisconsin's entity-level election has a design flaw that turns dangerous in a sale year: the entity pays a flat 7.9% — higher than the top individual rate — and the entity-level computation does not replicate the 30% or 60% capital gain exclusion the owners would get on their own returns. On an ordinary operating year the federal deduction usually still wins. On a gain-heavy year, electing can mean paying 7.9% on gain the owners would otherwise have paid roughly 5.4% — or 3.1% — on. Run the math both ways every year, and expect the sale year and the collection years to point in different directions.
Estate and IRD
Wisconsin has no estate or inheritance tax. At death the federal rules apply — heirs pay income tax as payments arrive, with the exclusion continuing to apply to the gain component — and Wisconsin's marital property system can improve the federal basis picture for married sellers on the underlying assets, though not on the note itself.
Planning notes
Wisconsin rewards sorting the gain before touching the structure: confirm which assets ride the 30% exclusion and which qualify for the farm 60%, check whether the stock qualifies for Wisconsin's own small-business exclusion — a separate, richer break for long-held qualifying Wisconsin company stock — and only then decide the PTE election year by year, remembering it ignores every one of those discounts. Price the note's interest at full rates when designing terms.
Wisconsin's entity-level tax is a flat 7.9% computed without the capital gain exclusion owners get individually. On a heavy gain year, electing can convert gain that would have cost roughly 5.4% (or 3.1% for farm assets) into gain taxed at 7.9% — the federal deduction has to earn back the difference. Run both columns every year of the note.
Wisconsin excludes 60% of long-term gain on qualifying farm assets — an effective rate near 3% — and separately offers a full exclusion for long-held qualifying Wisconsin small business stock. Sort the assets against both provisions before modeling any Wisconsin tax at all.
Educational information, current as of the July 2026 review. State law changes; confirm treatment with a qualified advisor before structuring a transaction.
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