Clear Money Guide
What this guide covers
A quick view of the questions and evidence developed below.
Updated July 31, 2026. Quick answer: three tax rules decide a sibling buyout, and ranking articles state two of them wrong. (1) The sellers’ gain is appreciation since death, not the sale price: every heir’s share took a stepped-up basis at the date-of-death value, and inherited property is automatically long-term. (2) The buyer’s basis is BLENDED: stepped-up value on the inherited fraction, purchase price on the bought fractions — not “the purchase price sets the basis,” which is what most buyout articles say. On a four-heir house appraised at $400,000 at death and bought out at $500,000, the buyer’s basis is $475,000, not $500,000. (3) A below-value family price has a gift component: a sibling deliberately selling their share cheap has made a partial gift, with its own reporting rules — paper the price to the appraisal.
Run your own numbers first
The buyout calculator computes the equity split, cash to close, each seller’s gain, and the blended basis from four inputs. Two structural notes worth real money: if the estate is still open, a non-pro-rata distribution can move the house to one heir with no sale and no gain at all; and if a sibling simply will not deal, the options ladder runs from co-ownership agreements to partition — with taxes waiting at each rung.
Two costs decide what a buyout is really worth: what the sale would have netted after commission and closing costs come out of the estate, which you can work through with the net proceeds calculator. If the house sits in another state, the executor has a second court to satisfy before it can be sold.