Family

Estate Planning for Blended Families in BC

Stepchildren, ex-spouses, children from different relationships — blended families are where estate planning matters most, because the default rules rarely match anyone's wishes.

Updated April 2026 · 9 min read

Key Takeaways

Why blended families need a will more than anyone

If you have a simple family — one spouse, shared children — BC's intestacy rules are reasonably fair. But for blended families, they create chaos.

Under WESA's intestacy rules, when you die with a spouse AND children from a previous relationship:

Example: You die with a $600,000 estate (mostly your house). Your current spouse gets $150,000 + $225,000 = $375,000. Your two children from a previous marriage split $225,000 ($112,500 each). If the house is $500,000 of the estate, it may need to be sold to make these distributions work. Your current spouse could lose their home.

The stepchildren gap

Stepchildren who have not been legally adopted have no inheritance rights under BC intestacy law. This means:

If you want your stepchildren to inherit, you must explicitly include them in your will.

The competing claims problem

In a blended family, your estate faces potential claims from multiple directions:

Balancing these competing interests is exactly why blended families need a lawyer — not a template.

Strategies that work

Life interest trust (spousal trust)

Leave the family home (or other assets) in a trust that gives your current spouse the right to live there for their lifetime. After the spouse dies, the home passes to your children. This protects the spouse's housing while preserving the asset for your children.

Life insurance

Use life insurance to equalize distributions. For example: leave the house to your spouse, and take out a life insurance policy with your children as beneficiaries. This avoids forcing a home sale and gives everyone their share.

Beneficiary designations

Use RRSP, TFSA, and insurance beneficiary designations strategically. These assets pass outside the will and outside probate, giving you more control over who gets what. How designations work

Marriage/cohabitation agreements

A domestic contract can define what each spouse is entitled to, which can reduce the risk of a wills variation claim. These agreements should be prepared with independent legal advice for both parties.

Clear documentation

If you're providing less for certain family members, document your reasons. A letter kept with your will explaining your rationale can help defend against variation claims — especially if the reasons are valid and rational.

Common mistakes in blended family estate planning

Frequently asked questions

Do stepchildren inherit in BC if there's no will?

No. Only biological and legally adopted children inherit under intestacy. You must include stepchildren in your will.

Can stepchildren challenge a will in BC?

Only if legally adopted. Non-adopted stepchildren cannot bring a wills variation claim under WESA.

What happens to the family home in a blended family without a will?

The spouse gets $150,000 + 50% of the rest. Children from a previous relationship get the other 50%. If the home is the main asset, a forced sale may be necessary.

Disclaimer: This article provides general information about estate planning for blended families in British Columbia. It is not legal advice. Blended family estate planning is inherently complex and requires professional legal guidance. Consult a qualified BC estate lawyer for your specific situation.