California Per Diem Allowance

Calculate California’s per diem rate based on GSA guidelines to simplify your business travels.

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Traveling for business in California? Understanding per diem rates is essential for managing expenses effectively, whether you're an employee, an accountant, or a small business owner. California, known for its diverse geography and varying costs of living from bustling cities like Los Angeles and San Francisco to quieter regions, has specific considerations when it comes to travel allowances. 

Per diem – a daily allowance for lodging, meals, and incidental expenses (M&IE) – helps standardize reimbursements and ensure travelers are adequately compensated without excessive administrative burden. This guide will walk you through California per diem rates, how to calculate them, relevant laws, and how technology can simplify the entire process.

California Per Diem Rates

For official government travel, per diem rates in California are generally established by the U.S. General Services Administration (GSA). These rates are the maximum allowances federal employees are reimbursed for expenses incurred while on official travel within the state. California does not have its own separate state-wide per diem schedule that supersedes these GSA rates for general employment purposes.

Key aspects of GSA per diem rates applicable in California include:

  • Location-Specific Rates: Rates vary significantly by county and sometimes even by city within California. Areas with a higher cost of living, designated as Non-Standard Areas (NSAs), will have higher per diem rates than the standard CONUS (Continental United States) rate. You can find the current GSA per diem rates for specific locations in California using the calculator below or by visiting the official GSA website. For FY 2025 (October 1, 2024 - September 30, 2025), the standard CONUS rate is $178 ($110 lodging, $68 M&IE), but many locations in California will have higher NSA rates.
  • Seasonal Variations: In some California locations, especially tourist destinations, lodging per diem rates can change based on the season to reflect fluctuations in hotel costs.
  • Components: Each per diem rate consists of two main parts:
    • Maximum Lodging Allowance: The maximum amount reimbursable for nightly accommodation. This excludes taxes on lodging in CONUS locations, which can be claimed separately.
    • Meals and Incidental Expenses (M&IE): A set daily amount for meals and incidental costs (like tips for hotel staff). The M&IE rate includes taxes and tips for meals.
  • First and Last Day of Travel: On the first and last day of travel, employees receive 75% of the total M&IE rate for their temporary duty location.
  • IRS High-Cost Localities: For federal tax substantiation purposes using the high-low method, the IRS (in Notice N-24-68, effective Oct 1, 2024) identifies several California locations as "high-cost," including Los Angeles, San Francisco, San Diego, Napa, and Yosemite National Park, among others. While these IRS rates ($319 for high-cost, $225 for other localities in FY2025) are for a specific tax reporting method, they underscore the recognized high expense levels in these areas.

It's important to note that while private employers in California are not mandated to use GSA rates, many use them as a benchmark for their travel reimbursement policies. 

Some specific state programs or agencies, like the one referenced in a document from the California Office of Historic Preservation (OHP), might cite specific federal per diem schedules for their participants, which could differ from current general GSA rates or have unique provisions for unlisted counties within their specific context. Always refer to your organization's travel policy for definitive guidance.

California Per Diem Rate Calculator

Planning your travel budget or processing reimbursements for trips to California can be complex due to the varied rates across the state. Our California Per Diem Rate Calculator is designed to simplify this for you.

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Your per diem allowance

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*For the first and last day of travel, M&lE spend is limited to 75% of its normal, daily allowance.

California GSA Lodging Rates

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California Meals and Incidental Rates

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Some Important California Per Diem Laws

While California generally aligns with federal GSA rates for official travel and as a common benchmark, specific state laws impact how employers handle business expense reimbursements for their employees.

  • California Labor Code Section 2802: This is a crucial piece of legislation. It mandates that California employers must indemnify (reimburse) their employees for all necessary expenditures or losses incurred by the employee in direct consequence of the discharge 1 of their duties. This means if an employer uses a per diem rate, that rate must be sufficient to cover the actual necessary expenses for lodging, meals, and incidentals. If the per diem provided is less than the employee's actual, reasonable, and necessary business travel costs, the employer must cover the difference.
  • No State-Mandated Per Diem Schedule for Private Employers: California does not establish its own specific per diem rate schedule that private employers must follow. Instead, the focus of California law is on ensuring actual reimbursement for necessary expenses. Employers can choose to use GSA rates, a company-developed rate, or an actual expense reimbursement method, as long as it complies with Labor Code 2802.
  • Receipts and Record Keeping: While GSA rules have specific receipt requirements (e.g., for lodging, and expenses over $75), California employers typically require receipts for most business expenses to substantiate them for reimbursement, in line with ensuring costs are "necessary expenditures."
  • Fire-Safe Hotel Requirement (Federal Travel): Although a federal rule, it's good practice for all travelers. Federal employees on official travel are required to stay in GSA-approved fire-safe properties. These properties meet specific safety standards, and lists are available on the U.S. Fire Administration's website.

It's important for both employers and employees in California to be aware of these provisions to ensure compliance and fair reimbursement practices.

California Per Diem Laws vs Federal Law

When considering per diem in California, it's helpful to understand the distinctions between federal guidelines (primarily from the GSA) and California's specific legal requirements for employers:

Primary Applicability

  • Federal Law (GSA): Primarily applies to federal government employees undertaking official travel.
  • California Law (Labor Code 2802): Applies to all employees of private employers in California. State employees also fall under state-specific rules which may reference GSA rates but are ultimately governed by state policy and law like Labor Code 2802.

Rate Setting Mechanism

  • Federal Law (GSA): The GSA sets specific, detailed per diem rates for lodging and M&IE (Meals and Incidental Expenses) that vary by location across the U.S., including numerous designated areas within California.
  • California Law: California does not establish its own state-wide per diem rate schedule that private employers must follow. The legal emphasis is on employers reimbursing actual, necessary business expenses incurred by employees. A per diem allowance can be used, but it must be sufficient to cover these expected costs.

Mandate to Use Specific Rates

  • Federal Law (GSA): Federal agencies are generally required to use the established GSA per diem rates for reimbursing their employees.
  • California Law: Private employers in California are not mandated to use GSA rates. While many use GSA rates as a reasonable benchmark, the overriding legal requirement is to ensure that the reimbursement method (whether per diem or actual expenses) fully covers the employee's necessary business travel costs.

Core Focus of the Law

  • Federal Law (GSA): Aims to standardize allowances and provide a cap on reimbursable amounts for federal travel, ensuring consistency and controlling government expenditure.
  • California Law: Primarily focused on employee protection, ensuring that employees are not forced to bear the costs of business operations or incur personal financial losses due to work-related travel.

Meal Deductions & M&IE

  • Federal Law (GSA): Provides a detailed framework for M&IE rates and specific monetary breakdowns for deducting government-provided meals from the M&IE allowance.
  • California Law: If an employer uses a per diem system that includes M&IE, any policy for deducting employer-provided meals should still ensure that the employee is adequately reimbursed for meals they had to purchase themselves and that the overall per diem meets the "actual necessary expenses" standard.

In essence, GSA rates are prescriptive for federal travel in California. For private employment within the state, California Labor Code Section 2802 serves as a fundamental requirement, ensuring employees are fully reimbursed for their necessary business expenses, regardless of whether a per diem system or an actual expense method is used.

How Fyle Can Automate Per Diem and Expense Tracking

Navigating per diem rates, especially in a state with as many location-specific variations as California, can be challenging. Ensuring compliance with GSA guidelines for federal travel or California Labor Code 2802 for private employment requires meticulous tracking and calculation. This is where Fyle can transform your expense management.

Fyle offers a smart, automated solution to handle the complexities of per diem and all other travel expenses:

  • Automated Per Diem Calculations: Configure Fyle to automatically calculate the correct per diem allowance based on travel location (city/county in California) and duration, incorporating GSA rates for the relevant fiscal year. It can handle the 75% M&IE rule for travel days seamlessly.
  • Flexible Policy Engine: Set up custom travel and expense policies within Fyle. Define rules for different employee groups, spending limits, and ensure compliance with both GSA standards (if applicable) and California's reimbursement requirements.
  • Easy Expense Reporting: Employees can effortlessly submit all travel expenses, including lodging, meals (if tracking actuals or amounts beyond per diem), and mileage, directly from their mobile devices or everyday apps like Gmail and Outlook.
  • Real-Time Compliance Checks: Fyle automatically flags out-of-policy expenses or discrepancies, ensuring that all submissions are compliant before they even reach approvers, saving valuable time for finance teams.
  • Mileage Tracking: For travel involving driving, Fyle’s mileage tracker, powered by Google Maps, accurately logs business miles, making mileage reimbursement straightforward and IRS-compliant.
  • Seamless Accounting Integration: Fyle integrates with leading accounting software like NetSuite, QuickBooks, Xero, and Sage Intacct, ensuring that all per diem and travel expense data syncs automatically, reducing manual data entry and potential errors.

By leveraging Fyle, businesses can ensure accurate per diem calculations, simplify the reimbursement process for employees traveling in California, maintain compliance, and gain better control over travel spend.

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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.