Received a Large Inheritance in Ontario? 5 Financial Planning Steps Before You Invest a Dollar

First: Understand What You Actually Received

Before making any financial decisions, it is worth understanding exactly what happened on the tax side before the money reached you. In Canada, there is no inheritance tax or estate tax paid by the beneficiary. Instead, the estate itself faces two main tax obligations: first, a deemed disposition — the deceased is considered to have sold all assets at fair market value at death, triggering capital gains on appreciated investments, real estate (other than the principal residence), and other property. Second, Ontario charges an Estate Administration Tax (commonly called probate fees) at 1.5% on the estate's value above $50,000.

The executor handles these obligations before distributing anything to beneficiaries. What you receive has already been through the tax process. The inheritance itself is not income — you do not report it on your tax return. What you do with it next, however, determines your tax situation for the rest of your life.

Step 1: The 30-Day Pause (Non-Negotiable)

The single most important financial planning step after receiving an inheritance is to do nothing irreversible for at least 30 days. Park the funds in a high-interest savings account at a major Canadian bank or credit union — in 2026, rates on large deposits run 4% to 5% — and let yourself breathe.

Inheritances arrive during some of the most emotionally difficult periods of people's lives. Grief, shock, guilt, and family pressure all work against clear financial thinking. There is a well-documented pattern: people who receive sudden wealth — whether through inheritance, lawsuit settlements, or lottery — make their worst financial decisions in the first 90 days. The 30-day pause is not passivity. It is protection against the decisions you will regret the most.

During this month, use the time productively: review your TFSA and RRSP contribution room on CRA My Account, get clear on your existing debts and interest rates, and begin researching fee-only financial planners in the GTA if your inheritance exceeds $150,000.

Step 2: Fill Your TFSA Room First

The Tax-Free Savings Account is the most powerful tool available to most Canadians, and an inheritance is the perfect opportunity to use it to its full potential. As of January 1, 2026, the cumulative TFSA room for a Canadian resident who was 18 or older in 2009 is $109,000. Most Canadians have never been able to max their TFSA because they simply did not have the cash. An inheritance changes that.

Inside a TFSA, every dollar of investment growth is tax-free for life. Withdrawals are tax-free. And crucially for retirees and near-retirees: TFSA income and withdrawals do not count as income for any federal benefit or credit calculation. This means no impact on GIS, no OAS clawback risk, no reduction in age-related tax credits.

A practical example: $80,000 invested in a diversified equity ETF inside a TFSA at age 55, growing at 7% annually, becomes approximately $310,000 by age 75 — entirely tax-free. The same $80,000 in a non-registered account, with dividends and capital gains taxed along the way, might yield $230,000 after tax over the same period. The TFSA advantage is worth roughly $80,000 in this single scenario — from one decision made at the moment of inheritance.

Step 3: The GIS Problem (Critical for Retirees)

The Guaranteed Income Supplement is a monthly federal payment for low-income Canadians over 65 who receive OAS. In 2026, the maximum GIS is approximately $1,080 per month for a single person — over $12,900 per year. It is the most aggressively income-tested federal benefit in existence: for every $2 of other income, GIS is reduced by approximately $1.

If you or your spouse receives GIS and inherits money, how you invest it determines whether you keep your GIS for life or lose it immediately. Investment income from GICs, savings accounts, dividends, and non-registered capital gains all count as income for GIS purposes. A retired Ontario couple receiving combined GIS of $18,000 per year who inherits $200,000 and invests it in a non-registered savings account at 5% generates $10,000 in interest income. That $10,000 reduces their combined GIS by $5,000 per year — permanently.

TFSA withdrawals, however, are completely excluded from GIS income calculations by law. The same $200,000 invested inside a TFSA generates the same $10,000 in income — but none of it counts for GIS. The couple keeps all $18,000 of their GIS. Over 20 years, this difference is $100,000 in preserved benefits, before even counting investment returns. If you receive GIS, the TFSA is not just a good idea — it is the most important financial decision you can make with an inheritance.

Step 4: RRSP — When It Makes Sense

After filling TFSA room, consider your Registered Retirement Savings Plan if you have available room and are still working. The RRSP contribution room is based on earned income — 18% of your prior year's earned income, up to the 2026 limit of $33,810, accumulated from unused prior years. Receiving an inheritance does not create RRSP room, but it gives you the cash to contribute funds you could not afford to put in before.

The RRSP is most valuable when you contribute in a high-income year (getting a deduction at 43-53% marginal rates in Ontario) and withdraw in a lower-income year in retirement. If you are currently in a high tax bracket — $100,000-plus income puts you at roughly 43% marginal rate in Ontario — an RRSP contribution from your inheritance can generate an immediate refund of $15,000 to $20,000 on a $40,000 contribution.

One important caveat: if you took time off work to care for the deceased parent and your income is lower than usual this year, consider carrying the RRSP room forward to a higher-income year when the deduction is worth more.

Step 5: Non-Registered Investing — Tax-Efficient Asset Location

After registered accounts are maximized, remaining inherited funds go into a non-registered account. Here, the type of investment significantly affects the annual tax bill — because different types of investment income are taxed at different rates in Ontario.

In 2026, effective tax rates on investment income differ dramatically: interest income (from GICs, savings accounts, bonds) is taxed at your full marginal rate — up to 53% for high earners. Canadian-eligible dividends receive a tax credit that reduces the effective rate to roughly 25-40% depending on income. Capital gains are taxed at 50% inclusion (the proposed increase to 66.67% was cancelled by the federal government in March 2025; the inclusion rate remains at 50% for all capital gains). This means holding bonds and GICs inside registered accounts where you already pay full tax on withdrawal, and holding Canadian dividend stocks or equity ETFs in a non-registered account, is the most tax-efficient approach.

A fee-only financial advisor or tax accountant can build a proper asset location plan across all your accounts. Getting it right at the start prevents years of unnecessary tax that compound over decades of investing.

The Mortgage Decision: Pay Down or Invest?

Many Ontarians receiving an inheritance have a mortgage, and the question of whether to pay it down or invest is one of the most common in financial planning. The math favours investing when expected investment returns exceed the after-tax cost of mortgage interest. In 2026, many Ontario homeowners are renewing at 4.5% to 5.5%. A diversified equity portfolio has historically returned 7-9% annually, suggesting investing wins over time. But that higher return comes with volatility — a 30% market drop while still carrying a $400,000 mortgage creates real financial stress.

A balanced approach works for most people: fill all registered account room first (guaranteed tax savings), then use a portion of remaining funds to make a lump-sum mortgage prepayment — reducing the balance and shortening the amortization — and invest the rest. The psychological value of seeing your mortgage drop meaningfully is real and should not be dismissed.

Update Your Own Estate Plan

Receiving a large inheritance makes you wealthier — which means your own estate now has a larger potential tax bill when you die. Use the inheritance as a trigger to review your own estate plan, ideally within three months of receiving the funds.

• Will: If your estate is now substantially larger, your will may need to be updated to reflect new assets or beneficiary wishes. If you do not have a will, creating one is now urgent — dying without a will in Ontario means your estate is distributed according to provincial intestacy rules, which may not match your intentions.
• RRSP and RRIF beneficiary designations: Confirm named beneficiaries on all registered accounts. Accounts without named beneficiaries flow through your estate and trigger probate fees at 1.5% of the value. Direct beneficiary designations bypass the estate entirely.
• TFSA beneficiary: Name a successor holder (spouse/common-law partner) or beneficiary. An unnamed TFSA flows through the estate and loses its tax-free status on growth after the date of death.
• Life insurance: Review whether additional coverage makes sense given your new asset level, particularly for estate planning purposes where insurance can fund the tax bill at death without forcing asset sales.
• Powers of Attorney: Ensure you have both a Continuing Power of Attorney for Property and a Power of Attorney for Personal Care, naming trusted individuals to manage your affairs if you become incapacitated.

When to Get Professional Help

For inheritances under $50,000, most Canadians can manage the financial decisions with some research: fill your TFSA, pay down high-interest debt, and keep the rest in a HISA while you decide. For inheritances between $50,000 and $150,000, a one-time consultation with a fee-only financial planner ($300 to $600 per hour) can optimize TFSA/RRSP strategy, asset location, and mortgage decisions in ways that easily pay for themselves.

For inheritances over $150,000 — which are common when a family home, RRSP, or investment portfolio is divided among beneficiaries in Ontario's expensive real estate market — professional financial planning is not optional. The complexity of asset location, tax-efficient withdrawal sequencing, estate plan updates, and GIS protection across decades of retirement income requires a specialist. A fee-only certified financial planner with experience in inheritance and estate transitions can create a plan that protects your financial position for the next 20 to 30 years.

The grief of losing a parent, grandparent, or other family member is real and enduring. But the financial decisions that follow an inheritance are among the most consequential you will ever make. Getting them right — or at least avoiding the worst mistakes — is one of the most meaningful ways to honour the wealth your family member spent a lifetime building.