The Canada Revenue Agency’s Underused Housing Tax (UHT) continues to catch Ontario businesses, corporations, and property investors off guard in 2026. With the April 30, 2026 filing deadline approaching for the 2025 calendar year, many property owners remain unaware of their obligations—or worse, assume they’re exempt when they’re not.

If your corporation, partnership, or trust owns residential real estate in Canada, this tax could apply to you. Penalties for non-compliance are severe, starting at a minimum $5,000 for individuals and $10,000 for corporations—even if you owe zero tax.

Here’s what every Ontario business owner needs to know about UHT compliance before the deadline hits.

What Is the Underused Housing Tax?

The Underused Housing Tax is an annual 1% tax on the ownership of vacant or underused residential property in Canada. Introduced in 2022 and applicable starting with the 2022 calendar year, the UHT targets foreign-owned residential properties that sit empty or underutilized.

While the tax primarily affects non-resident, non-Canadian owners, the filing requirement extends much further—including many Canadian corporations, trusts, and partnerships that own residential property.

Key Facts About UHT

Tax rate: 1% of the property’s assessed value (as determined for property tax purposes)
Annual filing: Required every year by April 30 for the previous calendar year
First deadline: April 30, 2023 (for 2022 calendar year)
2025 calendar year deadline: April 30, 2026
Penalties: Minimum $5,000 (individuals) or $10,000 (corporations) for failure to file, even if no tax owing

Who Must File a UHT Return?

This is where Ontario businesses get tripped up. The UHT applies to “affected owners”—a broad category that includes:

Entities Required to File

Corporations (Canadian or foreign) that own residential property
Trustees of trusts owning residential property
Partners in partnerships owning residential property (each partner files individually)
Individuals who are not Canadian citizens or permanent residents

Who Is Exempt?

Canadian citizens and permanent residents who own residential property personally (not through a corporation or trust) are exempt and do not need to file.

However, if you’re a Canadian citizen who owns rental property through your Ontario corporation, the corporation must file—even if the property is rented year-round.

Common Misconceptions That Cost Ontario Businesses

Misconception #1: “My Property Is Rented, So I Don’t Need to File”

Reality: Even if your property is fully occupied and you qualify for an exemption, you still must file a UHT return to claim that exemption. The CRA doesn’t grant exemptions automatically.

Misconception #2: “I’m Canadian, So This Doesn’t Apply to Me”

Reality: If you hold property through a Canadian corporation, trust, or partnership, you must file—regardless of your citizenship status. Corporate ownership triggers the filing requirement.

Misconception #3: “This Only Applies to Luxury Properties”

Reality: UHT applies to all residential properties in Canada, regardless of value. A $200,000 condo in Mississauga is treated the same as a $5 million estate in Oakville.

Misconception #4: “I Filed Last Year, So I’m Good”

Reality: UHT is an annual filing requirement. You must file by April 30 every year, even if your circumstances haven’t changed and you owe $0 in tax.

How the 1% Tax Is Calculated

The UHT is based on the assessed value of the property as determined by the local municipality for property tax purposes.

Example Calculation

Property: Residential condo in Brampton
Municipal assessed value: $600,000
Ownership period in 2025: Full year (January 1 — December 31)
UHT rate: 1%

UHT owing (if no exemption): $600,000 × 1% = $6,000

If you held the property for only part of the year (e.g., purchased in June), the tax is prorated based on the number of days owned.

Available Exemptions for Ontario Businesses

The good news: most legitimate business uses of residential property qualify for exemptions. But you must file to claim them.

Primary Residence Exemption

If the property is your (or a specified Canadian’s) primary residence for at least 180 days of the year, it’s exempt. This exemption is rarely applicable to corporations but may apply to certain trusts.

Qualifying Occupancy Exemption

Your property is exempt if it was occupied for at least 180 days during the calendar year by:

A tenant under a written lease of 30+ consecutive days
An employee under a written agreement
The owner (or specified individual) as a primary residence

Key requirement: The lease or agreement must be in writing and specify at least 30 consecutive days.

Vacation Property Exemption

If the property is used primarily as a vacation or recreational property by you or family members for at least 28 days per year, it may qualify for exemption.

New Construction or Substantial Renovation

Properties undergoing substantial renovation or newly constructed properties may be exempt for the calendar year(s) during which the work occurs, provided they’re uninhabitable.

Other Exemptions

Properties owned by specified Canadian corporations (with restrictions)
Properties held in certain types of trusts
Properties subject to a court-ordered restriction on occupancy or sale

Severe Penalties for Non-Compliance

The CRA enforces UHT filings aggressively. Penalties include:

Late-Filing Penalties

Minimum $5,000 for individuals
Minimum $10,000 for corporations
Plus additional penalties of up to 5% of the UHT owing

These penalties apply even if you owe zero tax because you qualify for an exemption.

Interest Charges

If you owe UHT and file late, interest accrues from May 1 at the CRA’s prescribed rate (currently around 10% annually).

Example Penalty Scenario

Corporation: Holds a rental property through an Ontario numbered company
Property status: Fully rented year-round, qualifies for exemption
UHT owing: $0
But: Forgot to file by April 30, 2026

Penalty: Minimum $10,000 for failure to file, even though no tax was owing.

Step-by-Step: Filing Your UHT Return

1. Determine If You’re an Affected Owner

Review the ownership structure of your residential properties. If held through a corporation, trust, or partnership, you’re likely required to file.

2. Gather Required Information

Property addresses and legal descriptions
Municipal assessed values (from property tax statements)
Ownership percentages (if multiple owners)
Lease agreements or occupancy documentation (to support exemption claims)
Business numbers (for corporations/trusts)

3. File Form UHT-2900

The UHT return is filed using Form UHT-2900 (Underused Housing Tax Return and Election Form), available on the CRA website.

You can file:

Online: Through the CRA’s secure portal (recommended)
Paper: Mail the completed form to the CRA’s Sudbury Tax Centre

4. Claim Applicable Exemptions

On Form UHT-2900, you’ll indicate which exemption(s) apply to each property. Be prepared to provide supporting documentation if the CRA requests it during a review.

5. Pay Any Tax Owing

If you owe UHT, payment is due by April 30 along with your return. Payment can be made through:

CRA My Payment
Online banking
Pre-authorized debit
Wire transfer

6. Retain Documentation

Keep copies of your UHT return, supporting documents (leases, invoices, etc.), and proof of payment for at least six years.

Special Considerations for Ontario Corporations

Holding Companies

If your Ontario holding company owns residential real estate (e.g., as an investment or to house executives), it must file a UHT return annually—even if the property is occupied.

Corporate-Owned Rental Properties

Corporations that own rental properties in the GTA must file UHT returns. While most qualify for the occupancy exemption (if rented 180+ days), failure to file still triggers the $10,000 minimum penalty.

Shareholder Residences

Some business owners hold their personal residences through their corporations for estate planning or creditor protection. These arrangements trigger UHT filing requirements, though the primary residence exemption may apply.

Pro tip: Consult with a CPA to assess whether personal ownership vs. corporate ownership makes sense under UHT rules.

What Ontario Businesses Should Do Now

With the April 30, 2026 deadline approaching, here’s your action plan:

Before April 1, 2026

Inventory all properties: List every residential property owned by your corporation, trust, or partnership
Review ownership structures: Determine which entities are “affected owners”
Gather documentation: Collect leases, occupancy records, and property tax statements
Assess exemptions: Identify which properties qualify for exemptions

Before April 15, 2026

Complete Form UHT-2900 for each affected property
Calculate tax owing (if any)
Prepare payment if UHT is due

Before April 30, 2026

File all UHT returns electronically or by mail
Submit payment for any tax owing
Confirm receipt from CRA (save confirmation numbers)

After April 30, 2026

Retain records: Keep all supporting documents for 6 years
Set calendar reminder: Mark April 30, 2027 for next year’s filing
Monitor CRA communications: Respond promptly to any review requests

Common Questions from Ontario Business Owners

Q: Can I file one UHT return for multiple properties?

A: No. Each residential property requires a separate Form UHT-2900, even if owned by the same entity.

Q: What if I sold the property mid-year?

A: You must file a UHT return for the portion of the year you owned the property. The tax is prorated based on the number of days of ownership.

Q: Does UHT apply to commercial properties?

A: No. UHT only applies to residential properties. However, mixed-use properties (residential + commercial) may be subject to UHT on the residential portion.

Q: Can I file late if I qualify for an exemption?

A: You can file late, but you’ll still face the minimum penalty ($5,000 for individuals, $10,000 for corporations) for late filing—even if you owe zero tax.

Q: What if I’m unsure whether my property qualifies for an exemption?

A: File the return by April 30 and claim the exemption you believe applies. Include detailed notes and keep supporting documents. The CRA may review your claim later, but filing on time avoids penalties.

How Insight Accounting CPA Can Help

Navigating UHT compliance requires careful review of property ownership structures, exemption qualifications, and CRA filing requirements. Our team specializes in helping Ontario businesses stay compliant with evolving CRA obligations.

Our UHT Compliance Services

Ownership structure review: Assess which entities must file
Exemption analysis: Identify all applicable exemptions to minimize or eliminate tax
Form preparation: Complete and file Form UHT-2900 on your behalf
Documentation support: Organize leases, agreements, and supporting records
CRA correspondence: Respond to reviews, audits, or penalty assessments
Strategic planning: Restructure property holdings to optimize tax efficiency

We also provide proactive support for businesses holding multiple properties, including partnerships, REITs, and real estate development corporations.

Contact us at (905) 270-1873 or visit insightscpa.ca/start to discuss your UHT obligations before the April 30 deadline.

Why UHT Matters for Ontario’s Real Estate Market

The UHT represents a broader shift in Canada’s approach to residential property taxation. Designed to discourage foreign speculation and free up housing supply, the tax has also created significant compliance burdens for legitimate Canadian businesses.

For Ontario corporations and investors, understanding UHT rules isn’t optional—it’s a costly necessity. The $10,000 minimum penalty alone can wipe out an entire year’s rental income on smaller properties.

But beyond compliance, UHT forces business owners to reconsider how they hold real estate. In some cases, transferring property out of corporations and into personal ownership may eliminate UHT filing requirements. In other cases, corporate ownership still makes sense despite the annual filing obligation.

These decisions require expert analysis of tax law, corporate structure, estate planning, and risk management—areas where Accounting Intelligence intersects with strategic CPA guidance.

Conclusion: Don’t Let UHT Penalties Catch You Off Guard

The April 30, 2026 deadline is firm. No extensions. No grace periods. And the CRA’s penalty structure makes non-compliance expensive—even when you owe zero tax.

If your Ontario corporation, trust, or partnership owns residential property, file your UHT return by April 30, 2026—even if you’re confident you qualify for an exemption.

The cost of compliance is minimal (a few hours of professional time). The cost of non-compliance starts at $10,000 and climbs from there.

Need help with your UHT filing? Contact Insight Accounting CPA at (905) 270-1873 or book a consultation at insightscpa.ca/start. Our team has guided hundreds of Ontario businesses through CRA compliance requirements—let us handle the paperwork while you focus on running your business.

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About the Author

Bader A. Chowdry, CPA, CA, LPA, is the Principal of Insight Accounting CPA, a technology-forward accounting firm serving businesses across the Greater Toronto Area. With over 15 years of experience including time at KPMG, Bader specializes in helping businesses navigate complex CRA compliance requirements using Accounting Intelligence—CPA-led guidance enhanced by AI-powered risk detection and deadline monitoring.

Insight Accounting CPA is located at 4300 Village Centre Court, Unit 100, Mississauga, ON L4Z 1S2. Learn more at insightscpa.ca.

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