Boise, ID Property Tax Calculator

The Home Value field is pre-filled with Boise's median home value of $495,000. Override with your actual home's market value for a specific estimate — your tax bill scales linearly with home value.

The rate is pre-filled with Ada County's effective rate of 0.44% — the county-level average for owner-occupied homes, which is more precise than Idaho's statewide average of 0.67%. Individual school districts and special taxing zones within Boise still shift the exact figure — if you know the rate from your latest tax bill, override it for the most precise estimate.

You'll see your estimated annual property tax, the monthly amount (which is typically escrowed with your mortgage payment), and a comparison to other states.

How Boise's tax bill works out. Homes in Boise are assessed and billed through Ada County. The effective rate there averages about 0.44% of market value — below Idaho's statewide average of 0.67%. On Boise's median home value of $495,000, that's approximately $2,178/year, or $182/month when escrowed with your mortgage.

How assessment works in Idaho. County assessors value homes annually at market value; assessment notices arrive by the first Monday of June.

Exemptions worth claiming. The homeowner's exemption shields 50% of your home's value up to $125,000 — it's the single biggest lever on an Idaho tax bill, so file it when you buy; a circuit-breaker program helps income-qualified seniors. Exemptions are the most common reason two identical Boise homes pay different tax bills — make sure yours are on file with Ada County.

What property tax actually pays for. In Boise — like the rest of Idaho — property tax funds local schools, public safety (police, fire), road maintenance, parks, libraries, and county government. Most of your bill stays in your county and school district.

Comparing to other states. Effective rates vary enormously across the US — from about 0.3% in Hawaii to nearly 2.5% in New Jersey. Boise's 0.44% puts it among the lowest in the US.