Your Siblings Were Disinherited. Do You Legally Owe Them Part of Your Inheritance?
Your mother's will left everything to you, and your brother sent his lawyer's letter three weeks later.
In Alberta, you do not owe your adult, independent siblings a share of the inheritance. The Wills and Succession Act upholds testamentary freedom, a parent's right to distribute property to anyone they choose, in any proportion. If your siblings are over eighteen, financially independent, and not disabled, they have no automatic claim. The law does not require fairness among adult children. It requires that the deceased's written instructions be followed.
When Disinherited Siblings Can Challenge
Two legal arguments give a disinherited sibling standing in court. The first is undue influence: the claim that you, as beneficiary, pressured or manipulated your parent into changing the will. The second is lack of testamentary capacity: the assertion that your parent was not of sound mind when they signed. Both require evidence. A demand letter is a negotiating tactic, and it is common.
If your sibling was named as a joint owner on a bank account or property with your parent, Alberta courts apply the presumption of resulting trust. This means the sibling is assumed to be holding that asset for the estate unless they can prove it was intended as a gift. Medical records from the time the account was opened, or written instructions from your parent, carry weight here.
A third category exists but applies narrowly. If a sibling provided years of unpaid care under a specific promise of inheritance, full-time caregiving documented in writing or corroborated by witnesses, they may file an unjust enrichment claim. Courts do not treat this lightly. Occasional help or general expectation does not meet the threshold.
The Cost of Defending Your Position
Legal fees to defend a will challenge in Edmonton or Calgary typically start with a retainer between $10,000 and $30,000. If the case proceeds to trial in the Alberta Court of King's Bench, expect it to take two to three years. The estate pays these costs initially, which means the inheritance you received funds the defense. A judge may order the losing challenger to repay your legal fees, but that outcome is not guaranteed, and collecting on the judgment is a separate problem.
Estate litigation becomes financially viable for law firms around the $500,000 threshold. Below that figure, many lawyers will not take a challenge on contingency, and the disinherited sibling must pay hourly rates. Knowing this helps you gauge how serious the threat is.
Settlement as a Business Decision
Even when the will is airtight and the law is on your side, settling for a fraction of the estate is sometimes cheaper than winning in court. A $20,000 nuisance payment to avoid $40,000 in legal fees and three years of depositions is risk management. The calculation changes based on the size of the estate, the strength of the medical records proving your parent's capacity, and whether you can afford the emotional cost of a protracted family rupture.
If you choose to share the inheritance voluntarily, the transfer is treated as a gift. Canada has no gift tax, but you must ensure all estate taxes, specifically, the deceased's final tax return, have been filed and paid before distributing funds. Giving money to siblings before settling the estate's tax liability can leave you personally exposed.
The will gives you the legal answer. Whether you follow it exactly, or whether you negotiate to preserve something that resembles a family, is a choice the law leaves to you.
Your mother's will left everything to you, and your brother sent his lawyer's letter three weeks later.
In Alberta, you do not owe your adult, independent siblings a share of the inheritance. The Wills and Succession Act upholds testamentary freedom, a parent's right to distribute property to anyone they choose, in any proportion. If your siblings are over eighteen, financially independent, and not disabled, they have no automatic claim. The law does not require fairness among adult children. It requires that the deceased's written instructions be followed.
When Disinherited Siblings Can Challenge
Two legal arguments give a disinherited sibling standing in court. The first is undue influence: the claim that you, as beneficiary, pressured or manipulated your parent into changing the will. The second is lack of testamentary capacity: the assertion that your parent was not of sound mind when they signed. Both require evidence. A demand letter is a negotiating tactic, and it is common.
If your sibling was named as a joint owner on a bank account or property with your parent, Alberta courts apply the presumption of resulting trust. This means the sibling is assumed to be holding that asset for the estate unless they can prove it was intended as a gift. Medical records from the time the account was opened, or written instructions from your parent, carry weight here.
A third category exists but applies narrowly. If a sibling provided years of unpaid care under a specific promise of inheritance, full-time caregiving documented in writing or corroborated by witnesses, they may file an unjust enrichment claim. Courts do not treat this lightly. Occasional help or general expectation does not meet the threshold.
The Cost of Defending Your Position
Legal fees to defend a will challenge in Edmonton or Calgary typically start with a retainer between $10,000 and $30,000. If the case proceeds to trial in the Alberta Court of King's Bench, expect it to take two to three years. The estate pays these costs initially, which means the inheritance you received funds the defense. A judge may order the losing challenger to repay your legal fees, but that outcome is not guaranteed, and collecting on the judgment is a separate problem.
Estate litigation becomes financially viable for law firms around the $500,000 threshold. Below that figure, many lawyers will not take a challenge on contingency, and the disinherited sibling must pay hourly rates. Knowing this helps you gauge how serious the threat is.
Settlement as a Business Decision
Even when the will is airtight and the law is on your side, settling for a fraction of the estate is sometimes cheaper than winning in court. A $20,000 nuisance payment to avoid $40,000 in legal fees and three years of depositions is risk management. The calculation changes based on the size of the estate, the strength of the medical records proving your parent's capacity, and whether you can afford the emotional cost of a protracted family rupture.
If you choose to share the inheritance voluntarily, the transfer is treated as a gift. Canada has no gift tax, but you must ensure all estate taxes, specifically, the deceased's final tax return, have been filed and paid before distributing funds. Giving money to siblings before settling the estate's tax liability can leave you personally exposed.
The will gives you the legal answer. Whether you follow it exactly, or whether you negotiate to preserve something that resembles a family, is a choice the law leaves to you.
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