Washington vs. Idaho: Cost of Living Near the State Line
If you're considering moving from Washington to Idaho, you've probably heard some version of this:
"Idaho is cheaper."
Sometimes it is.
Sometimes it isn't.
And if you're comparing Spokane or Spokane Valley with Post Falls, Coeur d’Alene or another North Idaho community, I wouldn't make the decision based on one tax rate—or one home's asking price.
Living near the Washington-Idaho border gives you an interesting opportunity. You can live on either side while still having access to many of the same jobs, airports, shopping, recreation and amenities.
But the financial picture can look very different depending on where you live, where you work, what you buy and the type of property you own.
So if you're trying to decide between Eastern Washington and North Idaho, here are the costs I'd actually compare.
1. Washington vs. Idaho Income Tax
Let's start with probably the biggest difference people talk about.
As of 2026, Washington does not have a general individual income tax.
Idaho does.
Idaho's individual income tax rate for the 2025 tax year is 5.3% on Idaho taxable income above the applicable threshold.
That means moving from Washington to Idaho doesn't automatically mean you'll pay less in every category.
Depending on your income, where you earn it and your individual tax situation, state income tax can be a significant part of the equation.
If you're planning to live in Idaho while continuing to work in Washington—or you're self-employed, own a business, have investment income or have income from multiple states—talk with a qualified tax professional about your specific situation.
This is one area where I wouldn't base a relocation decision on a social media graphic.
2. Sales Tax: Spokane vs. North Idaho
This one generally moves in Idaho's direction.
Idaho's statewide sales tax rate is 6%.
Washington has a 6.5% state sales tax, and local jurisdictions add their own sales taxes.
As of the third quarter of 2026, the combined general sales tax rate is 9.1% in the City of Spokane and 9.0% in Spokane Valley.
So on a $1,000 taxable purchase, you're looking at roughly:
Idaho at 6%: $60
Spokane at 9.1%: $91
That's a $31 difference on a $1,000 purchase.
Thirty-one dollars obviously isn't determining where you buy a house.
But over years of furniture, appliances, electronics and everyday purchases, these differences become part of the broader cost-of-living picture.
And this is exactly why I tell relocating clients not to compare states using one number.
Washington may have the advantage on individual income tax today.
Idaho may have the advantage on certain consumption taxes.
You have to look at both.
3. What About Groceries?
This is one that surprises people.
Idaho generally applies its 6% sales tax to groceries as well.
However, Idaho also provides eligible residents with a grocery tax credit through the state income-tax system.
So if you're making your own Washington-vs.-Idaho budget, don't assume the general sales-tax difference applies identically to every category of spending.
Look at what your household actually buys and how each state treats it.
4. Property Taxes: Don't Compare the States Using a Simple Percentage
Property tax comparisons are where internet conversations get messy.
You'll often see someone say:
"Idaho property taxes are X and Washington property taxes are Y."
That's not really how I'd compare two actual houses.
Property taxes depend on the property's assessed value, applicable taxing districts, exemptions and local levies.
In Idaho, a qualifying owner-occupied primary residence may receive the homeowner's exemption. The exemption removes 50% of the value of the home and up to one acre of land from taxation, up to the statutory maximum.
That can make a meaningful difference.
But here's something especially important if you're moving from Washington:
Idaho is a non-disclosure state.
Real-estate sales prices aren't publicly disclosed in the same way they are in Washington.
So trying to estimate an Idaho home's future property-tax bill simply by taking its purchase price and multiplying it by a tax rate can give you a misleading result.
When I'm helping someone compare a home in Spokane with one in Post Falls, I would rather look at the actual properties, their current assessments, exemptions and applicable taxing districts than tell them that one entire state simply has "lower property taxes."
5. Housing Costs: Compare What Your Money Actually Buys
This is probably the most important category of all.
Don't ask only:
"Which city has the lower median home price?"
Ask:
"What does my actual budget buy me in each place?"
A buyer looking for a newer four-bedroom home in a subdivision is making a very different comparison than someone looking for five acres and a shop.
North Idaho offers everything from downtown Coeur d’Alene condos and Post Falls subdivisions to Rathdrum acreage, Hayden properties, waterfront homes and custom construction.
Eastern Washington has its own mix of urban, suburban and rural properties.
Your personal comparison might be:
A $600,000 home in Spokane Valley versus a $600,000 home in Post Falls.
Or:
Five acres outside Spokane versus five acres outside Rathdrum.
Those are much more useful comparisons than statewide averages.
6. Vehicle Registration Can Be Very Different
This is another category worth checking before you move.
Idaho primarily bases standard passenger-vehicle registration fees on vehicle age, although county and other applicable fees can affect the final total.
For standard passenger vehicles, Idaho's published base annual registration fees are currently:
1–2 years old: $69
3–6 years old: $57
7+ years old: $45
Additional fees can apply depending on the vehicle and county.
Washington vehicle costs can work differently depending on where you live and the vehicle you're registering, so don't assume your current registration bill will follow you across the border.
If your household has two or three newer vehicles, this is absolutely a line item I'd put into your comparison spreadsheet.
7. Alcohol Is an Interesting Washington Expense
Here's one of the more random differences that people don't always think about.
Washington applies specific taxes to spirits in addition to its broader tax structure.
So if you're comparing everyday discretionary expenses
between the two states, alcohol can be another area where your costs differ.
Is this a reason to move states?
Obviously not.
But when you're trying to understand why the same lifestyle can cost slightly different amounts on opposite sides of the border, these smaller taxes and fees add up.
8. What About Shopping Bags and Other Local Fees?
This is where comparing states becomes even more nuanced.
Some costs aren't really "Washington versus Idaho" costs at all.
They're local.
Bag requirements, utility charges, parking, garbage service and other fees can depend on the city or jurisdiction.
That's why I wouldn't build a relocation budget using only statewide tax statistics.
Your actual address matters.
9. The Commute Might Be Your Biggest Hidden Expense
Let's say you work in Spokane but you're considering buying in Post Falls or Coeur d’Alene.
It's completely possible.
Plenty of people live on one side of the border and work on the other.
But calculate the commute honestly.
Not just in miles.
Think about:
Fuel.
Vehicle wear.
Your time.
Winter driving.
Traffic.
How often you're actually required to be in the office.
And where in Spokane you're going.
Living in Post Falls and commuting to Spokane Valley is a very different proposition from living farther into North Idaho and driving to downtown Spokane every weekday.
Before buying a house, drive the commute at the time you'd actually be making it.
Google Maps at 2:00 on a Sunday afternoon isn't the same thing.
10. Don't Forget Homeowners Insurance
Insurance premiums aren't determined simply by which side of the state line you're on.
The property itself matters.
If you're comparing an established subdivision home in Spokane with a heavily wooded acreage property in North Idaho, you're not really making an apples-to-apples insurance comparison.
Property characteristics can matter, including location, construction, replacement cost and other risk factors.
For rural North Idaho homes, I encourage buyers to start obtaining insurance information during their due-diligence period rather than treating it as a last-minute closing item.
That's particularly important when you're considering acreage or heavily wooded property.
11. Utilities Can Change the Equation Too
Two similarly priced homes can have completely different monthly operating costs.
One might have:
Public water and sewer.
Another might have:
A private well and septic system.
One may use natural gas.
Another may use propane.
One property might have inexpensive high-speed internet options.
Another might require a different rural solution.
If you're comparing Spokane with North Idaho, get actual utility information for the properties you're seriously considering instead of relying on a generic cost-of-living calculator.
12. Washington vs. Idaho Is Also a Lifestyle Decision
This is the part that can't be reduced to a spreadsheet.
Some people want to be closer to downtown Spokane, major employers or Washington amenities.
Others are specifically moving because they want the North Idaho lifestyle—Lake Coeur d’Alene, acreage, boating, mountains, outdoor recreation, a shop or simply more space.
Neither tax structure tells you which home you'll enjoy living in.
That's why I think the best question isn't:
"Is Washington or Idaho cheaper?"
It's:
"What will my specific lifestyle cost on each side of the border?"
That's a much more useful question.
Spokane vs. Post Falls
If you're trying to stay close to the Washington border, Post Falls is one of the first North Idaho communities I'd compare with Spokane and Spokane Valley.
Post Falls sits between Spokane and Coeur d’Alene and offers established neighborhoods, newer developments and larger properties as you move toward the outskirts.
For someone who still needs regular access to Washington, it can provide an interesting middle ground.
You can live in Idaho without necessarily putting yourself deep into North Idaho.
Spokane vs. Coeur d’Alene
Coeur d’Alene changes the equation a little.
You're farther from Spokane, but you're also getting closer to the lifestyle many people specifically associate with North Idaho.
Lake Coeur d’Alene.
Downtown.
Boating.
Trails.
Parks.
Restaurants.
And easy access to Hayden and communities farther north.
If you're commuting to Washington every day, that extra distance deserves serious consideration.
If you work remotely or only travel into Spokane occasionally, you may evaluate it very differently.
What About Rathdrum, Hayden and Athol?
Once you move farther into North Idaho, I stop thinking about the decision as simply "Washington versus Idaho."
Now we're really talking about the lifestyle you want.
Hayden can give you convenient access to Coeur d’Alene while offering its own established neighborhoods, newer construction and properties around Hayden Lake.
Rathdrum becomes particularly interesting for buyers looking for more space, acreage and shops.
Athol can take you even farther into the acreage and custom-home lifestyle.
If those are the things you're moving for, comparing only Spokane and Coeur d’Alene may cause you to miss the area that actually fits you best.
So, Is It Cheaper to Live in Idaho or Washington?
There isn't one answer that applies to everyone.
Washington currently has no general individual income tax.
Idaho has a lower general sales-tax rate than Spokane and Spokane Valley.
Property taxes vary by the actual property and taxing districts.
Vehicle-registration costs can differ.
Housing costs depend enormously on the type of home and location you're comparing.
And your commute could wipe out savings in another category.
So instead of asking which state is cheaper, I'd compare:
Housing + property taxes + state income taxes + sales taxes + vehicle costs + insurance + utilities + commute.
Then I'd look at what you're actually getting for that money.
Because saving $200 somewhere doesn't mean much if you choose a location that doesn't fit your life.
Thinking About Moving From Washington to North Idaho?
If you're considering moving from Spokane, Spokane Valley, Seattle or another part of Washington to North Idaho, you don't need to decide on a city before you start looking.
In fact, I usually prefer the opposite.
Start with what you want.
Do you need to commute to Washington?
Do you want to be near Lake Coeur d’Alene?
Do you want acreage?
New construction?
A shop?
Walkability?
Waterfront?
A shorter drive to Spokane?
Once I know those answers, we can compare the areas—and the numbers—that actually make sense for you.
If you're still getting familiar with the area, start with my Complete Guide to Moving to Coeur d’Alene, Idaho.
And if your version of Idaho involves a little more land and a lot more elbow room, read my Buying Acreage in North Idaho: 12 Things to Know Before You Buy guide next.
Thinking about making the move? Download my North Idaho Relocation Guide or reach out and tell me what you're looking for.
We'll compare both sides of the border based on your actual lifestyle—not just a tax meme.
Helping you find more than home.
