Lewis And Clark County, Montana Property Taxes
Property Taxes in Lewis And Clark County, Montana
Median Lewis and Clark County effective property tax rate: 0.82%, significantly lower than the national median of 1.02%.
Median Lewis and Clark County home value: $346,200
Median annual Lewis and Clark County tax bill: $2,977, higher than the national median property tax bill of $2,400.
How are property taxes in Lewis and Clark County calculated?
Property taxes in Lewis and Clark County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Lewis and Clark County or another part of Lewis and Clark County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Lewis And Clark County, Montana Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.82%
Estimate Property Tax Bill
$2,839
$2,634
How Does the Lewis and Clark County Property Tax Calculator Work?
Use this Lewis and Clark County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Lewis and Clark County's median effective tax rate of 0.82% to generate your estimate.
Enter your property's estimated assessed value — the figure the appraisal district assigns for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts or improvement districts that apply to your property. Lewis and Clark County's median tax rate is lower than Montana's 0.78% and also below the national median property tax rate of 1.02%. The county's median property tax bill is $2,977, compared with the national median property tax bill of $2,400 and $577 higher than Montana's median.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Lewis and Clark County.
Property Tax Rates Across Lewis And Clark County, Montana
What Are Effective Property Tax Rates Across Lewis and Clark County?
Local government entities set tax rates, which vary widely across Lewis and Clark County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Lewis and Clark County's effective property tax rate to other counties in Montana or the U.S. median of 1.02%.
Lewis and Clark County's median effective rate stands at 0.82%, which is lower than the national median of 1.02%. Within Lewis and Clark County, the highest rate is found in Helena at 0.83%, while Wolf Creek has the lowest at 0.55%.
These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Lewis And Clark County Tax Rate
0.82%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Montana Tax Rate
0.78%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Lewis And Clark County, Montana
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Augusta | 0.67% | 0.68% | 0.70% | 0.70% | 0.72% |
| Canyon Creek | 0.58% | 0.65% | 0.66% | 0.68% | 0.71% |
| Cascade | 0.52% | 0.55% | 0.56% | 0.58% | 0.60% |
| East Helena | 0.75% | 0.78% | 0.81% | 0.97% | 0.97% |
| Helena | 0.75% | 0.82% | 0.83% | 0.96% | 0.96% |
| Lincoln | 0.38% | 0.63% | 0.63% | 0.63% | 0.63% |
| Marysville | 0.62% | 0.72% | 0.72% | 0.72% | 0.72% |
| Wolf Creek | 0.51% | 0.55% | 0.55% | 0.56% | 0.63% |
| Clancy | N/A | N/A | N/A | N/A | N/A |
| Craig | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Lewis And Clark County, Montana
When examining property taxes in Lewis and Clark County, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Lewis and Clark County appraisal district estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Lewis and Clark County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of March.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Lewis and Clark County.
For example, the median tax bill in Lewis and Clark County is $2,977, compared with the national median property tax bill of $2,400. Tax bills range significantly across the county, with Helena at the highest median home price at $359,900.
Property Tax Assessment Values Across Lewis And Clark County, Montana
Source: Ownwell
$168,605
$272,468
$376,330
Median Lewis And Clark County Market Value
$346,200
Median Montana Market Value
$317,000
Median United States Market Value
$235,294
Property Tax Assessment Values Across Lewis And Clark County, Montana
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Augusta | $43,284 | $70,562 | $168,605 | $271,550 | $402,000 |
| Canyon Creek | $92,003 | $184,890 | $263,732 | $399,811 | $630,920 |
| Cascade | $94,912 | $155,187 | $241,219 | $393,300 | $590,143 |
| East Helena | $107,418 | $247,000 | $321,338 | $412,100 | $524,600 |
| Helena | $69,770 | $262,945 | $359,900 | $460,525 | $595,700 |
| Lincoln | $28,712 | $107,182 | $239,558 | $343,952 | $457,100 |
| Marysville | $131,507 | $208,125 | $252,550 | $324,150 | $535,050 |
| Wolf Creek | $83,899 | $176,068 | $288,500 | $473,000 | $756,840 |
| Clancy | N/A | N/A | N/A | N/A | N/A |
| Craig | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Lewis And Clark County, Montana
Property tax bills in Lewis and Clark County are based on the assessed value of a home and the local tax rate applied to that value. When a property’s market value rises, the assessed value can increase as well, which can lead to a higher tax bill. Local taxing authorities use this calculation to fund public services, so the amount a homeowner owes depends on both the home’s value and the rates set in the area.
With a median home price of $346,200, homeowners in the county can see very different tax bills depending on where they live and how their property is assessed. The 25th percentile tax bill is $1,800, while the 75th percentile reaches $3,857 and the 90th percentile climbs to $4,908. Helena has the highest median tax bill at $3,151, compared with $1,114 in Augusta.
For homeowners, this means property taxes can be a major ongoing housing cost, and changes in assessed value can have a direct impact on annual bills.
Median Lewis And Clark County Tax Bill
$2,977
Median Montana Tax Bill
$2,559
Median United States Tax Bill
$2,400
Property Tax Bills Across Lewis And Clark County, Montana
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Augusta | $268 | $443 | $1,114 | $1,885 | $2,783 |
| Canyon Creek | $540 | $1,232 | $1,751 | $2,563 | $4,461 |
| Cascade | $360 | $813 | $1,335 | $2,150 | $3,274 |
| East Helena | $518 | $2,032 | $2,694 | $3,395 | $4,211 |
| Helena | $507 | $2,204 | $3,151 | $3,997 | $5,083 |
| Lincoln | $181 | $536 | $1,384 | $2,096 | $2,861 |
| Marysville | $546 | $1,185 | $1,746 | $2,287 | $3,738 |
| Wolf Creek | $392 | $896 | $1,592 | $2,630 | $4,249 |
| Clancy | N/A | N/A | N/A | N/A | N/A |
| Craig | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Lewis and Clark Tax Assessor | |
| Website | svc.mt.gov |