Spousal Trust vs. Outright Bequest in Ontario 2026: Side-by-Side Tax Calculator for $1M, $2M and $3M Estates

How Both Structures Qualify for the Spousal Rollover at First Death

The most important thing to understand upfront: both a testamentary spousal trust and an outright bequest to the surviving spouse trigger the automatic spousal rollover under subsection 70(6) of the Income Tax Act. This means all capital property transfers to the surviving spouse (or to a qualifying spousal trust) at the deceased's adjusted cost base — not at fair market value. No deemed disposition. No capital gains tax at first death.

For the spousal trust to qualify, it must meet three conditions under subsection 70(6.1): (1) the surviving spouse must be entitled to receive all of the trust's income during their lifetime, (2) no person other than the surviving spouse may receive or otherwise obtain the use of any income or capital of the trust during the spouse's lifetime, and (3) the trust must be resident in Canada. If any condition is violated, the rollover is denied and a full deemed disposition occurs at first death.

The $1M Estate: Why the Outright Bequest Usually Wins

Consider a $1M estate consisting primarily of non-registered investments with an adjusted cost base of $600,000 (a $400,000 embedded capital gain). The deceased is an Ontario resident. The surviving spouse has $50,000 in annual pension and CPP income.

At $1M, the spousal trust is roughly breakeven to slightly worse than the outright bequest on pure cost. The income-splitting savings ($30,000–$45,000) are largely consumed by 15 years of trust accounting and legal fees ($52,500). The second-death probate saving ($14,500) helps, but not enough to create a clear margin. And the outright bequest offers something no spreadsheet captures: simplicity. The surviving spouse owns the assets, makes their own investment decisions, and avoids the annual burden of T3 filings, trustee meetings, and beneficiary accounting.

The $2M Estate: Where the Analysis Gets Interesting

At $2M, the calculus shifts. The embedded gain is $800,000 (ACB of $1.2M). Annual investment income is approximately $80,000 — dividends, interest, and realized gains. The surviving spouse has $50,000 in pension income.

At $2M, the spousal trust saves $37,000–$82,000 over the outright bequest. The three drivers: higher income-splitting savings on $80,000 of annual investment income, the GRE graduated-rate window saving $24,000–$36,000 in the first three years, and avoiding $29,500 in second-death probate. The trust's administration costs ($67,500) are meaningful but no longer overwhelming.

The $3M Estate: Where the Spousal Trust Wins Decisively

At $3M, the embedded gain is $1.2M (ACB of $1.8M). Annual investment income is approximately $120,000. The surviving spouse has $50,000 in pension income.

At $3M, the spousal trust saves $82,000–$172,000 over the outright bequest. The income-splitting savings alone ($120,000–$210,000) dwarf the cumulative administration costs ($82,500). Add the second-death probate avoidance ($44,500) and the GRE window ($30,000–$42,000), and the trust delivers a clear financial advantage that justifies its complexity.

How Income Splitting Works Inside the Spousal Trust

The primary ongoing tax advantage of a spousal trust comes from how investment income is taxed. With an outright bequest, all investment income — dividends, interest, capital gains — is reported on the surviving spouse's personal T1 return, stacked on top of their pension and CPP income.

With a spousal trust, the income can be managed in two ways:

Probate Fee Implications: First Death vs. Second Death

Ontario's Estate Administration Tax is calculated at 0.5% on the first $50,000 of estate value and 1.5% on everything above $50,000. At first death, both structures pay the same probate — the assets must pass through the deceased's estate regardless of whether they go into a spousal trust or directly to the spouse.

The difference appears at second death:

The second-death probate saving is a clean, predictable number — and it scales linearly with estate size. On a $3M estate, avoiding $44,500 in Ontario probate fees at second death is a meaningful benefit. On a $1M estate, the $14,500 saving is real but modest relative to the trust's cumulative administration costs.

The Legal and Accounting Cost of Maintaining a Testamentary Trust

A testamentary spousal trust is not a "set it and forget it" structure. It requires ongoing administration for as long as it exists — typically the remaining lifetime of the surviving spouse.

When the Outright Bequest Wins on Simplicity and Net Outcome

Tax optimization is not the only consideration. For many Ontario families, the outright bequest is the right choice even when the trust would save a modest amount of tax. Here are the scenarios where simplicity wins:

Two-Column Decision Matrix: Score Your Own Estate

Score each factor from 0 (favours outright bequest) to 2 (favours spousal trust). Total your score and use the verdict ranges below.

The Deemed Disposition at Second Death: Both Structures Pay

Regardless of which structure you choose, the deemed disposition at second death triggers capital gains tax on all appreciation since the original ACB (which was carried over through the spousal rollover at first death). The tax bill at second death is approximately the same under both structures — the spousal rollover defers the gain, it does not eliminate it.

With an outright bequest, the deemed disposition is reported on the surviving spouse's terminal T1 return. With a spousal trust, it is reported on the trust's final T3 return. The marginal rates are similar — on a $1.2M capital gain, both the individual and the trust hit the top combined federal-Ontario rate of 53.53% on the bulk of the income.

Will Drafting: The Choice Must Be Made Before Death

A common misconception: the executor can choose between a spousal trust and an outright bequest after death based on the tax analysis. This is not the case. The testamentary spousal trust must be created in the will with specific terms that satisfy subsection 70(6.1). If the will only provides for an outright bequest, no trust can be created retroactively.

The best practice for estates in the $1.5M–$3M range — where the optimal choice depends on circumstances at death — is dual-option drafting. The will includes both an outright bequest and a fully drafted spousal trust, with a clause allowing the executor or the surviving spouse to elect which structure is used within a specified time after death (typically 90–180 days). This adds $3,000–$5,000 to the will-drafting cost but provides the flexibility to optimize based on the actual estate value, tax rates, and family circumstances at the time of death.

The Bottom Line

At $1M, the outright bequest wins on simplicity — the spousal trust's tax savings are consumed by its administration costs, and the surviving spouse gets full control with no annual compliance burden. At $2M, the decision turns on non-tax factors: blended families, creditor risk, and trustee availability tip the scale. At $3M and above, the spousal trust saves $82,000–$172,000 over the outright bequest through income splitting, second-death probate avoidance, and the GRE graduated-rate window — more than enough to justify its ongoing costs.

The most important decision is not which structure to choose — it is whether to build the optionality into your will before death. A properly drafted will with dual-option language costs a few thousand dollars more but allows your executor to make the optimal choice based on facts that cannot be known today: the actual estate value at death, the surviving spouse's health and income, the tax rates in effect, and the family dynamics at that moment. That flexibility is worth more than any spreadsheet projection.