Seattle Per Diem Calculator and Rates

Calculate Seattle's per diem rate based on GSA guidelines to simplify your business travels.

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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.

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Your per diem allowance

Dates
Lodging (L)
Meals & Incidentals (M&IE)
Total (L + M&IE)
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Lodging (L)
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Meals & Incidentals (M&IE)
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Total (L + M&IE)
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*For the first and last day of travel, M&lE spend is limited to 75% of its normal, daily allowance.

Seattle GSA Lodging Rates

Financial year
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County
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Seattle Meals and Incidental Rates

Financial year
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County
Daily M&IE Total
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Some Important Seattle Per Diem Laws

While Washington State law is flexible, the City of Seattle has its own robust laws that protect employees from bearing the costs of business-related expenses.

  • Mandatory Reimbursement Under The Seattle Wage Theft Ordinance: Unlike Washington State law as a whole, the City of Seattle's specific ordinance requires employers to pay employees for "all compensation owed," which explicitly includes reimbursement for any necessary business expenses incurred by the employee. This creates a clear legal duty for all employers operating within Seattle.
  • Using Per Diem To Fulfill Legal Obligations: While reimbursement is required, the city does not set specific rates for private companies. Employers can use a per diem system to meet their legal obligation, but the allowance must be sufficient to cover the actual necessary costs an employee incurs. If a per diem is not enough, the employer is likely liable for the difference.

Seattle Per Diem Laws vs Federal Law

It's crucial for employers in Seattle to understand how the city's local ordinance interacts with the federal per diem system.

Primary Applicability

  • Federal Law (GSA): Mandatory for U.S. federal government employees traveling to Seattle. Private companies often use these rates as a benchmark for what is considered a "reasonable" reimbursement.
  • Seattle City Law: Mandatory for all private sector employers within the City of Seattle. It establishes the duty to reimburse, not the specific rates.

Rate Setting and Usage

  • Federal Law (GSA): Sets specific, non-negotiable per diem rates that federal agencies must use.
  • Seattle City Law: Does not set its own rates but legally requires that reimbursement be sufficient to cover an employee's actual, necessary costs. Using GSA rates is a common way to establish a policy that is presumed reasonable and compliant with this law.

Legal Focus

  • Federal Law (GSA): Aims to create a uniform, cost-controlled system for government travel.
  • Seattle City Law: Aims to protect employees' wages by ensuring they are not financially burdened by having to pay for their employer's business costs.

How Fyle Can Automate Per Diem and Expense Tracking

In a high-cost city like Seattle, where expense reimbursement is a legal mandate, maintaining a compliant, accurate, and efficient system is paramount. Fyle’s expense tracking app automates the entire process, providing an ironclad audit trail while making it simple for employees to get reimbursed quickly.

Here’s how Fyle helps you build a compliant and efficient expense process in Seattle:

  • A Powerful Policy Engine To Ensure Compliance: Codify your travel policy, including GSA per diem rates and custom spending limits, directly into Fyle. The platform automatically checks every expense against these rules, ensuring every reimbursement aligns with Seattle's laws and your company's budget.
  • Effortless Expense Documentation For Your Team: Fyle makes it easy for employees to create perfect expense reports. A simple photo of a receipt is all it takes to capture the necessary data, which means no more lost documentation or delayed submissions.
  • Real-Time Visibility and Control Over Corporate Card Spend: Integrate your company's existing corporate cards with Fyle to get a live feed of all transactions. This gives finance leaders immediate oversight into spending and automates the reconciliation process for employees.
  • Accurate Mileage Tracking For In-City Travel: Whether driving to a client meeting across town or to another part of the Puget Sound region, Fyle’s GPS-powered mileage tracker provides a simple and IRS-compliant way to log business travel, guaranteeing accurate reimbursement.
  • Seamless Accounting Sync To Eliminate Manual Work: Fyle connects directly with all major accounting systems, including NetSuite, QuickBooks, Sage, and Xero. All approved expense data flows automatically to your general ledger, saving hours of manual work and ensuring your financial records are always up-to-date.

With Fyle, you can confidently meet your legal reimbursement obligations in Seattle, giving your finance team powerful controls while offering a simple, modern experience for your employees.

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The content on this page is for informational use. As legal standards and per diem rates are subject to change, users should verify current details with official GSA or government resources. This information does not serve as financial or legal counsel.