Inherited Property Buyout Calculator: Buy Out Your Siblings’ Shares
Inherited a house with your siblings and want to keep it? See what buying out each share actually costs.
To buy out a sibling's share of an inherited house, take the property's current market value, subtract any debt still secured against it, and multiply the remaining equity by their inherited share — so a one-third share of a debt-free $900,000 house costs $300,000 to buy out.
Last updated August 2026
When a will leaves the family home to two or more children, someone usually wants to keep it — and everyone wants to know the number. This calculator works out what each beneficiary's share of an inherited property is worth and what it costs one of you to buy the others out, from the current market value, any debt still owing, and each person's inherited share.
It handles equal and unequal shares, up to six beneficiaries, and shows the loan you'd need if you're refinancing to fund the buyout.
How this calculator works
- Enter the property's current market value (a formal valuation beats a guess — siblings argue less with an independent number), any mortgage or estate debt still secured against it, and each beneficiary's share from the will. Mark who's keeping the house.
- Each departing beneficiary's payout is the net equity times their share. The buyer's own share isn't paid for — you already own it — which is why buying out two siblings from a three-way split costs two-thirds of the equity, not the full value.
- If there's still debt on the property, the tool also shows the total loan a refinance needs to cover: the payouts plus clearing what's owed.
A worked example: three siblings, one house
Three siblings inherit their parents' debt-free house in equal shares. It's valued at $900,000, so each share is worth $300,000. The sister who wants to keep it pays each brother $300,000 — $600,000 in total — usually funded by a mortgage over the property she now owns outright.
Change the shares and the same rule holds. If the will left 50% to her and 25% to each brother, keeping the house costs $225,000 per brother, $450,000 all up. And if the house still carried a $100,000 debt, the equity drops to $800,000 first — each equal share becomes $266,667, and a refinance would need to cover the payouts plus the $100,000 payoff.
Australia and the United States
The math is the same wherever you buy. For country-specific tax and legal detail — stamp duty and CGT in Australia, closing costs and capital gains in the US — read the guide for Australia or the United States.
Good to know
- Uses the value and shares you enter; it does not value the property or interpret the will. Executors distribute the estate — get the shares from the will or the intestacy rules.
- Ignores transaction costs: legal fees, valuation, loan costs, and any transfer (stamp) duty or capital gains tax. In Australia, transfers between beneficiaries under a deed of family arrangement can have duty concessions in some states — get advice.
- Educational estimate — not legal, tax or financial advice.
Frequently asked questions
How do I calculate buying out my siblings from an inherited house?
Current market value, minus any debt on the property, times each sibling's inherited share. Two siblings inheriting 50/50 with the house worth $800,000 and no debt: buying your sibling out costs $400,000. This calculator does the math for up to six beneficiaries with equal or unequal shares.
Where does the money come from to buy out a sibling?
Most buyers refinance: a new mortgage over the inherited property funds the payout (plus clearing any existing debt on it). Some lenders treat this as a standard purchase-like refinance; you'll need to service the loan on your own income. Cash, or offsetting against other estate assets, also works.
What if one sibling is living in the inherited house?
An occupying beneficiary doesn't get the house cheaper by living there — their share is what the will says, no more. If the estate hasn't settled and one sibling lives there rent-free, the others can reasonably ask for an occupation-rent adjustment at settlement. Agree it in writing early; it's the single most common inherited-property fight.
Do we pay stamp duty or capital gains tax on an inherited buyout?
Often some of one, sometimes both — and it's jurisdiction-specific. In Australia, duty may apply to the share transferred (with concessions in some states when it follows the will), and CGT can apply to growth since the date of death. In the US, heirs get a stepped-up basis at death, which usually keeps capital gains small if you settle promptly. Confirm with a professional before agreeing a price.
What if we can’t agree on the property’s value?
Commission an independent valuation (or two, and average them) rather than negotiating from online estimates. The valuation fee is trivial next to the money at stake, and an independent number keeps the family relationship intact.
What happens if one sibling refuses to sell or be bought out?
A beneficiary can't be forced to accept a buyout, but co-owners can generally force a sale through the courts (partition in the US, statutory trustees for sale in Australia) — an expensive last resort that usually nets everyone less than a negotiated buyout. Run the numbers, get a valuation, and negotiate first.