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№ 22 Wills & Estates

Buying Out Siblings' Shares of an Inherited House in Ontario

Want to keep the family home? Learn how a sibling buyout works in Ontario: valuing the house, paying for it, tax points and documenting the transfer.

Wills & Estates5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Who owns what depends on whether the estate is still open and how title is held.
  • Date-of-death fair market value is used for tax on the deceased's final return, so a written appraisal is useful.
  • If siblings cannot agree, co-owners can be compelled to partition or sell under the Partition Act.
  • A buyout is easier when the price, payment timing and documents are settled in writing.

After a parent dies, one child often wants to keep the family home while the others would rather have their share in cash. A buyout can suit everyone, but only if the family agrees on a value, the buyer can pay, and the transfer is properly documented.

This article covers the main steps: who actually owns the house, how to value it, how a buyer can pay, what to put in writing and what happens if talks break down.

Who owns the house at this stage?

If the house is still in the deceased's name, the estate trustee deals with it. Their duties are to wind up the deceased's affairs, pay taxes and debts, collect assets and distribute the residue to those entitled.

Probate is normally required if the deceased owned real property that does not pass to another person by right of survivorship. If there is no will, the spouse or common-law partner usually has first right to apply to administer the estate. If there is none, a close adult relative can apply, and the court may appoint the relative it considers most appropriate.

Check how title was held. When a tenant in common dies, their share becomes part of their estate, and when a joint tenant dies, the surviving co-owners inherit the share. A buyout of siblings only makes sense once you know who is entitled to what.

Putting a value on the house

For tax purposes, the deemed proceeds on the final return are the fair market value on the date of death. Estate Administration Tax uses its own method, which counts Ontario real estate at appraised date-of-death value, minus encumbrances such as mortgages or liens.

A buyout price is a matter of agreement, and it is often set by a current appraisal. A date-of-death appraisal may be out of date if the market has moved, so many families get both.

Paying for the buyout

The buyer must usually find enough to pay the other siblings. Common routes include a new mortgage on the house, savings, a loan from family, or taking less from the estate. Whether a buyer's own share of the estate can count toward the price depends on the facts, so it is worth confirming with a lawyer. A lender will have its own requirements, so speak to a mortgage professional early.

If real property must be sold, a certificate should be obtained before anyone signs an Agreement of Purchase and Sale. If a sibling is buying, what authority is needed before signing anything depends on the facts, so it is worth confirming with a lawyer.

Estate Administration Tax is paid by the estate. For certificates applied for on or after January 1, 2020, it is $0 per $1,000 on the first $50,000 and $15 per $1,000 on the rest. Budget for this and for the final-return tax before distributing.

Tax and documents

On death, the deceased is treated as having sold all their property just before death, and any gain is reported on Schedule 3 and line 12700 of the final return. If the house qualified as a principal residence, it must still be designated on the final return using Schedule 3 and Form T1255, and the designation applies only until the date of death.

The spouse rollover does not help siblings. It applies to a transfer to a surviving spouse or common-law partner. How tax applies to a later sale by the buyer depends on their situation. An accountant can confirm this for your case.

DocumentPurpose
Written appraisalSupports the agreed value
Buyout agreementRecords price, payment timing, closing date and responsibilities
ReleasesWhether releases are needed, and what they should say, depends on your situation, so it is worth confirming with a lawyer
Transfer and land registrationMoves title into the buyer's name
Mortgage documentsIf the buyer is financing

If siblings cannot agree, and next steps

Co-owners, whether joint tenants or tenants in common, can be compelled to partition or sell. Where land passed by will or intestacy, no proceeding may start until one year after the death of the person in whom the land was vested. Joint tenants have a prima facie right to force a sale, and the party resisting must show why the property should not be sold.

In one case, the court let the owner who wanted to keep the property buy out the other co-owner first, with a sale to proceed if she was unable or unwilling to buy. That shows why having your financing lined up matters.

Frequently asked questions

Can I buy my siblings out before the estate is settled?

It depends on the facts. The estate trustee has the duties to pay taxes and debts and distribute the residue, and a certificate should be obtained before signing an Agreement of Purchase and Sale if real property must be sold. Speak to a lawyer before agreeing on terms.

How is the house valued?

For Estate Administration Tax, Ontario real estate counts at appraised date-of-death value minus encumbrances. The buyout price itself is a matter of agreement, and a written appraisal is the usual basis.

What if one sibling refuses to sell their share?

Co-owners can be compelled to partition or sell under the Partition Act, although no proceeding may start until one year after the death where land passed by will or intestacy. A lawyer can explain the options before you go to court.

Is there tax when I buy out my siblings?

The deceased's gain is reported on the final return. Whether other tax arises on your own buyout depends on how title and the estate are structured, so confirm with an accountant.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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