Disagree with your property tax bill? This 2025 guide walks you through the process of appealing a tax assessment in Canada. Learn how to identify errors in valuation, gather supporting evidence like comparables, and file an official appeal with your local board. Reassessments happen every few years, and sharp property value increases can trigger sudden tax hikes. This guide offers best practices for homeowners and investors who want to ensure fair taxation. We also explain timelines, legal rights, and professional services that can help reduce your tax bill. With home prices still volatile in 2025, appealing unfair assessments can save thousands.