This is not a mortgage decision. It’s a capital allocation decision.
You are not deciding what to do with a property. You are deciding what to do with your equity.
The core framework: Return on Equity (ROE)
Most rental owners track cash flow. That’s useful, but it can hide the real issue.
As your property grows in value, your equity grows too. If rent and net income do not rise at the same speed, your return on equity can quietly fall.
What ROE actually measures
ROE measures how hard your equity is working.
ROE = Annual net rental income ÷ Net equity after sale
That “net equity after sale” part is the upgrade.
Why net equity after sale matters
If you sold tomorrow, you would not reinvest the headline equity. You would reinvest what’s left after friction like:
Realtor fees
Legal costs
Mortgage payout penalties
Capital gains tax (if any)
CRA also makes a clean distinction between expenses you can deduct and ones you cannot, including that mortgage principal is not deductible. (Canada)
How to calculate ROE properly (so your decision isn’t fake math)
Step 1: Calculate annual net rental income
Start with gross rent, then subtract reasonable deductible expenses. CRA’s rental expense guidance is the best baseline for what belongs in your net income. (Canada)
Two reminders that change the math:
Mortgage interest is usually an expense. Mortgage principal is not. (Canada)
Repairs are not always the same as improvements. Some costs are current expenses, some are capital costs. (Canada)
Step 2: Calculate net equity after sale
A simple way to estimate:
Net equity after sale = Estimated sale price
minus mortgage and secured debts to be paid out
minus selling costs
minus estimated tax costs
For the tax side, CRA’s guide to capital gains and their “selling your rental property” guidance are the official starting points. (Canada)
Step 3: Calculate ROE
ROE = Net rental income ÷ Net equity after sale
Now you can compare “keep” versus “sell” using the same unit: return on deployable capital.
Option 1: Sell the rental property
Selling can be smart when your equity is trapped in a low-return container.
When selling makes sense
ROE is low and staying low
A large amount of equity is tied up
You have a clearly better use of capital
The real cost of selling (most people underestimate this)
Selling costs and taxes reduce your reinvestable capital. CRA’s rental sale and capital gains guidance is the clean reference point for how gains are calculated and reported. (Canada)
The right question is not “how much will I sell for?”
It’s “how much will I have left to redeploy?”
Option 2: Keep the property as-is
Holding can be the best move when ROE is still strong, or when the property has strong strategic value.
When holding makes sense
Stable tenants and stable income
Future rent growth is realistic
You do not need to redeploy equity
The hidden risk: the equity trap
The equity trap is simple:
Your equity grows, but your net income does not keep up, so ROE shrinks.
If you do not calculate ROE, you can feel like you are winning because the property value is up, while your capital is actually underperforming.
Option 3: Refinance the rental property
Refinancing does not create wealth. It reallocates capital.
You turn equity into deployable funds, while keeping the asset.
How refinancing changes ROE
Refinancing reduces equity in the deal, which can increase ROE on the remaining equity. But it also increases leverage, which increases risk.
The critical CRA rule: interest deductibility depends on use
This is where many investors get hurt.
Borrowing is not automatically deductible. Interest deductibility depends on purpose, legal obligation, and reasonableness, and the use of funds matters. CRA’s Interest Deductibility folio is the official reference. (Canada)
In plain language:
Borrow and use it to earn income, interest may be deductible.
Borrow and use it for personal spending, it is not.
If you refinance and then mix uses, you create tracing problems that can be hard to defend later.
Option 4: Re-amortize the mortgage
Re-amortizing is mainly a cash flow tool.
It lowers payments by extending the timeline. That can be useful, but it usually increases total interest over time.
When it makes sense
You need temporary cash flow relief
You are in a transition period
You are prioritizing stability over acceleration
The trade-off
Lower payment today can mean higher total cost over the long run.
Comparing the options: the clean decision logic
You are trying to answer one question:
What option gives my equity the best risk-adjusted job?
Sell when ROE is low and you have a better place for the capital. Expect friction.
Keep when ROE is acceptable and the property fits your long-term plan.
Refinance when you can redeploy the funds into something productive and you can handle leverage.
Re-amortize when you need breathing room, not a long-term return upgrade.
Tax considerations that change the decision
Rental income basics
CRA’s rental income guide is the baseline for how net rental income is determined and how it is reported. (Canada)
Expenses you can and cannot deduct
These two CRA pages answer most questions fast. (Canada)
Capital gains on sale
CRA’s guidance confirms the mechanics and also shows that only a portion of a capital gain is taxable, and how it is reported. (Canada)
Market timing: when it matters (and when it doesn’t)
Rates matter because they change refinance math and payment risk.
Market conditions matter because they change sale outcomes.
But bad math does not become good math in a better market. ROE is still ROE.
