Property tax assessments determine the value assigned to a home for tax purposes, influencing the annual property tax bill along with exemptions and local tax rates. Assessments may not reflect true market value and can be based on outdated data. Tax bills depend on property use, size, location, and local tax rates, which can increase even if market values remain flat. Homeowners can appeal inaccurate assessments by submitting evidence to local tax authorities. Some may qualify for tax relief or reductions.