BC vs Alberta Deemed Disposition on Death on a $1.2M Non-Registered Account in 2026: How the Provincial Tax Rate Gap Creates a $16,000 Difference

The Scenario: Same Portfolio, Two Provinces

A 68-year-old dies in 2026. No surviving spouse — widowed four years ago. One adult child, age 40, inherits everything. The deceased earned $30,000 of pension income in the year of death before passing. The only significant asset is a non-registered investment account. Everything else — the family home (sold two years ago), TFSAs, personal effects — has been dealt with. The estate comes down to one account.

We run the identical portfolio through two provinces: British Columbia (top combined marginal rate 53.50%) and Alberta (top combined marginal rate 48.00%). The difference in outcome is entirely driven by provincial tax rates and probate fees — the federal deemed disposition calculation is the same in both.

Step 1: The Federal Deemed Disposition — Identical in Both Provinces

Under section 70(5) of the Income Tax Act, the deceased is deemed to have sold the entire non-registered portfolio at fair market value immediately before death. This is a federal rule. It does not matter whether the deceased lived in Victoria or Edmonton. The gain calculation is the same.

Step 2: The Provincial Tax Gap — Where the $16,000 Difference Lives

With approximately $388,333 of taxable income on the terminal return, the deceased is well into the top marginal bracket in both provinces. The federal tax is the same. The difference is the provincial component.

That $16,000 is not a rounding error. It is more than a full year of maximum OAS payments at age 65–74 ($742.31/month × 12 = $8,908/year). It is the equivalent of nearly two years of OAS, lost because of the provincial rate gap. The deemed disposition is federal and unavoidable — but the tax rate applied to it is partly a function of where you hold a driver's licence.

Step 3: Probate Fees — Where the Gap Widens to $29,000

The income tax gap is $16,000. But probate fees add another $13,000+ to BC's cost disadvantage.

Alberta's $525 cap on surrogate court fees is the lowest meaningful probate cost in Canada (Manitoba charges $0, but Alberta's flat fee is functionally negligible on any estate over $100K). BC's $14-per-$1,000 rate above $50,000 is among the highest. For a deeper comparison of probate across all provinces, see our complete provincial probate fee comparison.

The Full Side-by-Side: After-Tax Estate Value

The heir in Alberta receives roughly $31,925 more than the heir in BC. On a $1.2M estate, that is a 2.7-percentage-point difference in the effective estate cost rate. The income tax gap ($16,000) is the larger driver, but probate ($15,925) nearly matches it. Together, they produce a gap that is hard to dismiss as trivial.

Why ACB Documentation Is the Single Most Important Estate Task

The entire worked example above assumes the executor can prove the $600,000 adjusted cost base. If ACB records are missing — and on a 20-year-old non-registered account, they often are — CRA may deem the ACB to be zero.

Missing ACB records can cost more than the entire provincial tax gap. In BC, the cost of undocumented ACB on this account is roughly $158,000 — ten times the $16,000 provincial rate difference. In Alberta, it is $142,000. Both figures dwarf the BC-vs-Alberta debate.

The fix is straightforward but requires action while the account holder is alive: request a cost-base report from the brokerage, track reinvested distributions (especially return of capital on ETFs and mutual funds), and keep T5008 slips. Most brokerages provide an ACB report — but the brokerage is not required to track ACB for tax purposes, and their figures may not account for return-of-capital adjustments. The executor needs to verify these records independently.

What If There Is a Surviving Spouse? The Spousal Rollover

Our scenario has no surviving spouse. But if a spouse or common-law partner had survived, the deemed disposition disappears entirely — in both provinces.

Under sections 70(6) and 73(1) of the Income Tax Act, capital property can transfer to a surviving spouse at the deceased's original adjusted cost base. No deemed disposition. No capital gains tax. The $600,000 unrealized gain is deferred until the surviving spouse dies or sells the assets. On this estate, the spousal rollover eliminates the entire $136,000–$152,000 income tax bill. The only remaining costs would be probate (still $16,450 in BC vs $525 in Alberta) and legal fees.

The spousal rollover is the most powerful estate-tax deferral tool in Canada. It does not eliminate the tax — it defers it to the second death. But deferral on $136,000–$152,000 of tax buys the surviving spouse decades of investment growth on money that would otherwise have gone to CRA. For a detailed walkthrough of how the deemed disposition unwinds on the second death, see our inheritance tax Canada 2026 complete guide.

Does a Testamentary Trust Change the Comparison?

A graduated rate estate (GRE) — the testamentary trust that exists for the first 36 months after death — is taxed at graduated rates rather than the flat top rate that applies to most trusts. But the GRE does not reduce the deemed disposition tax bill. The capital gain triggered under section 70(5) is reported on the deceased's terminal T1 return, not in the GRE. The GRE's graduated rates apply to income earned by estate assets after death — dividends, interest, and gains from post-death sales within the estate.

A spousal trust (qualifying under section 70(6)) is more useful. If the deceased's will creates a trust where the surviving spouse is the sole income beneficiary for life, the non-registered account rolls into the trust at the original ACB, deferring the deemed disposition entirely. The trust is not taxed on the unrealized gain until the spouse dies or the trust disposes of the assets. This achieves the same deferral as a direct spousal transfer — but with the additional control of keeping the assets in trust for the eventual benefit of children or other beneficiaries.

The provincial tax rate gap still applies when the deferred gain eventually materializes — at the surviving spouse's death or at a sale within the trust. A testamentary trust does not change which province's rate applies; the trust is taxed based on its own province of residence.

Three Planning Levers That Work in Both Provinces

1. Strategic RRSP Contributions to Offset the Terminal-Return Tax

This lever is only available if the deceased had unused RRSP contribution room. A contribution to the deceased's RRSP for the year of death (or within 60 days of the following year, if death occurs before December) generates a deduction that offsets taxable income on the terminal return. On $388,333 of income, a $30,000 RRSP contribution reduces the top-bracket tax by roughly $16,050 in BC or $14,400 in Alberta. But the contribution room must exist — and the executor must act before the filing deadline.

2. Charitable Donations on the Terminal Return

Donations made by the estate in the year of death or the preceding year generate a tax credit on the terminal return. The federal credit is 33% on amounts over $200 (for income above the top bracket threshold). Donating appreciated securities directly to a registered charity eliminates the capital gain on those securities entirely — no inclusion, no tax. On a $600,000 gain, even a modest $50,000 donation of in-kind securities could save $13,000–$15,000 in tax.

3. Loss Carry-Backs from the Estate

If the non-registered portfolio declines in value after the date of death but before the estate distributes the assets, the estate realizes a capital loss. Under section 164(6) of the Income Tax Act, the estate can carry this loss back to the deceased's terminal return, reducing the deemed disposition gain. This is a powerful tool when markets drop between the date of death and the estate settlement. A $100,000 post-death decline could carry back to reduce the terminal return tax by $25,000–$30,000 — regardless of province. For Alberta estate planning specifics, see our guide to deemed disposition on joint non-registered accounts in Alberta.

Province of Residence Is a Lever — But Not a Reason to Relocate

On this $1.2M non-registered account, dying in Alberta saves roughly $32,000 compared to BC. On a $2M account with $1M in gains, the gap would exceed $50,000. Province of residence is one of the largest single levers in Canadian estate tax outcomes — Alberta and Manitoba effectively have no probate fees, while BC, Ontario, and Nova Scotia charge the most.

But relocating provinces solely for estate-tax savings is rarely the right decision. Healthcare access, family proximity, cost of living, and quality of life all dominate the $32,000 estate difference on most $1.2M portfolios. The point is not “move to Alberta.” The point is: know what your province charges, document your ACB, use spousal rollovers where available, and make beneficiary designations on registered accounts. These four actions cost nothing and can save more than the provincial tax gap on most estates. For a side-by-side look at how Alberta and BC compare on probate specifically, see our Alberta vs BC probate fee comparison on a $1.5M estate.