Idaho Per Diem Rates and Calculator 2026-27

For trips from October 1, 2026, through September 30, 2027, the per diem in most of Idaho is $113 a night for a hotel and $68 a day for meals. The per diem is higher in 3 Idaho cities, including Sun Valley, Coeur d'Alene, and Boise.

Type your trip dates below to see what you can write off or get paid back, and get a free PDF. Going to one of those cities? Pick it from the list below the calculator.

Who is this trip for?

Meals

The government sets meals in most of Idaho at $68 a day, and $51 on the day you leave and the day you get home. For your 4 days, that's $238. You can write off half.

$119

Hotel

Type what you paid above. You can write off every dollar.

$0

What you can write off for this trip

$119

That saves you about $40 in taxes.

Keep this trip's receipts in Shoeboxed

The free PDF shows what you can write off, where it goes on your tax form, and the math. No email, no signup.

Keep every trip of the year in the free Shoeboxed Per Diem Log

It's a Google Sheet. Paste in each trip, and it adds up what you can write off for the whole year.

Get the free Per Diem Log (Google Sheet)

Updated October 31, 2026 by Doug, owner of Shoeboxed. Rates from the GSA, the government office for travel.

Idaho cities that get a higher per diem

Going to one of these cities? Click it to see its hotel rate for each month and figure your trip.

CityMeals per dayHotel per night
Boise $86 $176 to $201
Coeur d'Alene $74 $148 to $227
Sun Valley and Ketchum $80 $183 to $316

Everywhere else in Idaho, the per diem is $113 a night for a hotel and $68 a day for meals.

The $68 meal rate covers breakfast ($16), lunch ($19), dinner ($28), and $5 for tips. On the day you leave and the day you get home, you get 3/4 of it, $51.

Traveling somewhere else? Here are the per diem rates for every state and city.

Who can use the Idaho per diem

If you work for yourself, the IRS lets you use the government meal rate instead of adding up meal receipts, and you write off half of it. You write off the hotel at what you paid.

If you drive a truck, you get $80 a day for meals anywhere in the lower 48. Drivers who log their hours for the DOT write off 80% of it. Click "I drive a truck" in the calculator.

If your boss pays you back, a per diem up to the government rate is tax-free when you report your trip to them. Click "My boss pays me back" for a finished expense report.

Keep every receipt from the trip anyway. They prove where you were each day, and the IRS wants the hotel receipt. Snap them with the Shoeboxed app as you go.

Common Idaho per diem questions

From October 1, 2026, through September 30, 2027, the government per diem is $113 a night for a hotel and $68 a day for meals in most of Idaho. The per diem is higher in 3 Idaho cities: Boise, Coeur d'Alene, and Sun Valley.