As the primary business and technology hub of the Pacific Northwest, Seattle is a vital destination for corporate travel. For any organization with employees traveling to Seattle, a precise and legally compliant per diem strategy is essential.
This guide is designed to provide clarity on travel expenses in Seattle. We will cover the official GSA per diem rates, explain the laws that govern employee reimbursement in both Washington State and the City of Seattle, and show you how to streamline the entire process.
Seattle Per Diem Rate
Per diem rates for official travel in Seattle are set by the U.S. General Services Administration (GSA). These federal rates are mandatory for federal employees and serve as a common benchmark for private sector companies looking to create an IRS-compliant reimbursement policy.
For Fiscal Year 2025 (October 1, 2024, to September 30, 2025), key rates for the Seattle area are broken down as follows:
Seattle Metro Area
The city of Seattle and surrounding King County have their own designated Non-Standard Area (NSA) rates with significant seasonal variations driven by tourism and events.
- Seattle (King County):
- M&IE: $92 per day
- Lodging: Seasonal, with a peak summer rate of $248 per night (June-Sep) and a rate of $188 per night for all other months.
- The first and last day of travel, the M&IE rate is $69.00.
Standard CONUS Rate
For any county in Washington not specifically listed by the GSA, the standard CONUS rate applies. For FY 2025, this rate is $178 ($110 for lodging and $68 for M&IE).
Seattle Per Diem Rate Calculator
Find the exact per diem allowance for your business trip to Seattle with our easy-to-use calculator. Select the fiscal year, choose your destination, and input your travel dates. The tool will instantly provide the correct lodging and M&IE rates based on the official GSA schedule.