For a Durham Region rental owner, 2026 NOI is more than a year-end figure. It shows how the property performed before financing, capital spending, and income tax. It also gives you a useful base for reviewing rent levels, vacancy, maintenance costs, reserves, and next year’s operating plan.
Before December 31, assemble the records behind the number. A clean year-end review should answer five questions:
- What income did the property generate?
- How much revenue was lost to vacancy or arrears?
- What did it cost to operate the property?
- Which costs were capital items rather than operating expenses?
- How much cash remains after debt service and planned reserves?
2026 NOI: Use the Correct Formula
The standard property-level calculation is:
NOI = Gross rental income − vacancy and credit loss − operating expenses
Gross rental income includes rent and recurring property income such as parking, storage, or laundry charges. Vacancy and credit loss accounts for empty units, unpaid rent, and other income that was expected but not collected.
Operating expenses generally include:
- Property taxes
- Insurance
- Routine repairs and maintenance
- Property management fees
- Landlord-paid utilities
- Snow removal and landscaping
- Cleaning and common-area costs
- Advertising and leasing costs
- Regular service contracts
NOI does not include mortgage principal, mortgage interest, capital improvements, income tax, depreciation, or owner draws. Those items still matter to your investment. They simply belong below NOI in a separate cash-flow or tax analysis.
This distinction matters. A property can show positive NOI while producing weak cash flow because debt service is high. The reverse can also occur if an owner has temporarily reduced debt payments or delayed necessary maintenance.
For financial modelling, keep these lines separate:
- NOI: Property operations before financing and tax.
- Cash flow before reserves: NOI less mortgage payments and other owner-level cash costs.
- Cash flow after reserves: Cash flow less planned contributions for capital items.
- Taxable rental income: Amount calculated under CRA rules, which may not match NOI.
Pull These Records Together Before December 31
A reliable review starts with source documents, not a bank balance.
Income reconciliation: Export the rent ledger for each unit. Compare rent charged, rent received, deposits, credits, discounts, parking income, storage income, and other charges. Investigate every difference between the ledger and the bank deposits.
Vacancy and arrears report: Record each vacant day, turnover period, unpaid balance, payment arrangement, and write-off. Separate physical vacancy from economic vacancy. A unit may be occupied but still produce less income because of arrears or a concession.
Expense ledger: Review every invoice and payment by property. Confirm that recurring expenses were assigned to the correct building, unit, or common area.
Mortgage records: Separate principal from interest. The full mortgage payment is a cash-flow item. It is not an NOI expense. The interest portion may be relevant to CRA reporting, but it should not be deducted from NOI.
Capital project records: Identify roof work, major appliance replacements, window projects, HVAC replacements, extensive renovations, and other improvements. These should generally be tracked separately from routine repairs and maintenance.
Year-end accruals: Record work completed before December 31 even if the invoice arrives later. Use a consistent accounting method and apply it across the year.
How to Read Vacancy Across Durham Region
A regional average can hide meaningful differences. Unit size, building age, layout, parking, condition, and turnover pattern often matter more than a broad municipal label.
The following table provides current local leasing benchmarks for the areas requested. They are operating benchmarks used for planning, not official municipal vacancy statistics.
| Durham submarket | Approximate vacancy benchmark |
|---|---|
| Pickering | 2.0%–2.5% |
| Ajax | 3.2% |
| Whitby, including Brooklin | Approximately 2.5% |
| Oshawa North | 2.9% |
| Oshawa South/Central | 4.7% |
| Clarington, including Bowmanville | Approximately 1.8% |
Disclosure: These figures are approximate local leasing benchmarks published by Olympus Realty on September 16, 2026. They are not CMHC-certified vacancy rates, do not represent every rental type, and should not be used alone for valuation, underwriting, or pricing decisions.
The spread between North Oshawa and Oshawa South/Central illustrates why portfolio reporting should be location-specific. The same issue applies within Whitby and Clarington. Brooklin and Bowmanville may have different building stock, layouts, turnover patterns, and available rental supply than the broader municipality.
For your own property, track:
- Number of vacant days
- Days from notice to listing
- Days from listing to approved application
- Turnover and cleaning costs
- Rent loss during repairs
- Arrears by month
- Concessions or discounts
- Renewal rate by unit type
A two-bedroom unit in an older low-rise building should not be compared with a new one-bedroom apartment simply because both are in Oshawa. Compare like with like.
Set a Reserve for Capital Items
NOI excludes capital expenditures, but owners still need to plan for them.
Start with a property condition schedule. List the roof, windows, furnace, water heater, appliances, flooring, exterior work, parking areas, plumbing systems, and other major components. For each item, record:
- Installation or replacement date
- Current condition
- Expected remaining life
- Estimated replacement cost
- Planned replacement year
- Funding already set aside
A basic annual reserve calculation is:
Estimated replacement cost ÷ remaining useful life = annual reserve target
This is a planning method, not a valuation formula. Actual costs will vary by building, scope, contractor, and timing.
Keep the reserve outside NOI. If you deduct a future roof replacement from current NOI, you make operating performance appear weaker than it is. If you ignore the roof entirely, you overstate distributable cash. The better approach is to report both:
- NOI before capital reserves
- Cash flow after debt service and capital reserves
Avoid These Common NOI Errors
Treating mortgage payments as operating expenses: Mortgage payments affect cash flow. They do not measure the property’s operating performance.
Deducting capital work from recurring maintenance: Replacing a roof is not the same as repairing a leaking shingle. Track the work according to its nature and keep capital spending visible.
Using scheduled rent instead of actual economic income: A leased unit with three weeks of unpaid rent did not produce the same income as a fully collected unit.
Ignoring owner-paid expenses: Utilities, landscaping, snow removal, and small repairs paid from a personal account still belong in the property’s operating review.
Annualizing a partial year without adjustment: A property acquired in July cannot be compared directly with a full-year operating statement without identifying the partial-period effect.
Comparing NOI to taxable income: NOI is an investment metric. CRA rental reporting uses its own rules for allowable expenses, capital expenditures, interest, and other items.
Leaving one-time costs in the wrong period: A major insurance adjustment or unusual repair can distort a monthly trend. Keep the cost in the correct reporting period and identify it as non-recurring where appropriate.
Prepare CRA Records Alongside the NOI Review
CRA’s Form T776, Statement of Real Estate Rentals is separate from an NOI statement. Your year-end package should still contain the documents needed to support rental income and expenses.
Maintain a file for each property containing:
- Rent ledger and lease records
- Bank statements showing rental deposits
- Property tax bills
- Insurance invoices
- Mortgage statements showing interest
- Repair and maintenance invoices
- Utility bills
- Management fee invoices
- Advertising and leasing costs
- Purchase, sale, and closing documents
- Capital project invoices and payment records
The CRA’s Rental Income guide states that records should generally be retained for six years from the end of the applicable tax year. Keep electronic records organized by property and preserve the original supporting documents where required.
For tax treatment, consult your accountant. This article explains operational reporting. It does not determine whether a particular expense is deductible or capital in nature.
Use the Review to Set 2027 Priorities
Once the 2026 numbers are reconciled, identify the three largest operating variances.
For example:
- Vacancy increased while advertised rent remained unchanged.
- Maintenance costs rose because of repeated issues with one system.
- Utility expenses exceeded the prior year because of a billing or consumption problem.
- Arrears increased despite stable occupancy.
- Insurance or property tax costs changed the expense ratio.
Then assign an action to each variance. A useful year-end review should produce decisions, not only a report.
At Olympus Realty, our Property Management Services support investor-owned residential, commercial, and mixed-use properties across Durham Region.
- Financial oversight: We organize income, expenses, arrears, and property-level reporting for clearer decisions.
- Maintenance coordination: We track recurring repairs and separate routine work from larger capital requirements.
- Tenant placement: We manage marketing, screening, and turnover steps to reduce avoidable vacancy.
- Full-service operations: We coordinate the day-to-day work required to maintain consistent property performance.
Learn more about Olympus Realty Property Management Services. To discuss a 2026 year-end review, call 289-671-9987 and provide the property address, unit count, current vacancy, and reporting period.
You can also review our About Us page to understand our family-owned, boutique approach.
Disclaimer
This article is general information only. It is not investment advice, financial advice, accounting advice, or tax advice. NOI calculations and CRA reporting depend on the facts of each property and ownership structure. Speak with your accountant or qualified financial adviser before making reporting, financing, or investment decisions.
Data Sources and Dates
- 2026 publication date: Current article prepared September 30, 2026.
- December 31: Calendar-year reporting endpoint used for the year-end review discussed in this article.
- Durham vacancy benchmarks: Olympus Realty, “The Downtown Oshawa Building Boom,” published September 16, 2026. The figures are approximate local leasing benchmarks, not official CMHC municipal vacancy rates.
- CRA record-retention period: Canada Revenue Agency, T4036 Rental Income guide, current guidance accessed September 30, 2026. The guide states that records should generally be retained for six years from the end of the applicable tax year.
- Form T776: Canada Revenue Agency, Statement of Real Estate Rentals, accessed September 30, 2026.
- NOI framework: The formula and treatment of operating expenses, financing costs, capital expenditures, and tax items reflect standard Canadian real estate reporting practice. NOI is not a CRA tax term.