Across many communities, homeowners are opening reassessment notices and having the same reaction: 

“My assessed value doubled…does that mean my taxes will double too?” In most cases, the answer is no. 

While reassessment notices can look alarming at first glance, the way property taxes are calculated means that a higher assessed value does not automatically translate into dramatically higher taxes. 

Why Reassessments Happen 

Over time, property values change. Some homes appreciate faster than others, neighborhoods evolve, and housing markets move up and down. If a town never updated property assessments, the tax system would eventually become very uneven. 

A reassessment is the process municipalities use to bring assessed values closer to current market values and rebalance the tax base across all properties. The goal is not necessarily to increase the town’s overall tax revenue, but to distribute the tax burden more fairly among homeowners. 

The Common Mistake Homeowners Make 

When homeowners receive their reassessment notice, many immediately try to calculate their new taxes by multiplying their new assessed value by the current tax rate. This almost always produces an inaccurate—and usually much higher—estimate. 

The reason is simple. 

When reassessments increase the total value of all properties in a town, the property tax rate is typically adjusted downward. 

Why the Tax Rate Changes 

Property taxes are driven primarily by the municipality’s budget. If the total assessed value of all properties in a town increases after a reassessment, the tax rate must decrease to generate the same level of revenue. 

This adjustment helps keep the system balanced. So while the assessed value of many homes may increase significantly during a reassessment, the tax rate applied to those values usually decreases. 

What Actually Determines Whether Your Taxes Go Up or Down 

After a reassessment, what really matters is how your home’s value changed compared to other homes in the community. 

If your home’s value increased about the same as the town average, your taxes may stay relatively similar. 

If your property increased more than average, your share of the tax burden may rise. 

If your property increased less than average, your taxes could even decrease. 

In other words, reassessments don’t just change your home’s value—they adjust the entire tax base. 

Why Reassessment Notices Can Be Misleading at First 

The reassessment notice only shows the new assessed value of your home. It does not include the updated tax rate that will eventually be applied. Without that tax rate, it’s impossible to calculate your new tax bill accurately. 

That’s why early estimates based on multiplying the new assessed value by the old tax rate often cause unnecessary concern. 

The Bottom Line 

Seeing a large increase in assessed value can feel alarming, but it does not automatically mean your property taxes are about to double. 

Property taxes are determined by both assessed value and the tax rate—and the tax rate typically adjusts downward after reassessments. 

The most important factor is how your home’s value changed relative to other properties in the community. 

Once the new tax rate is released, homeowners will have a much clearer picture of what their updated property tax bill will actually look like.