State per diem rates are the government-set daily allowances used to reimburse employees for travel expenses like lodging, meals, and incidental costs. Businesses and government agencies rely on these official rates, which are primarily established by the U.S. General Services Administration (GSA), to create a straightforward, tax-compliant system for handling travel costs without requiring a receipt for every expense.

Understanding the Basics of Per Diem Rates

At its core, per diem—Latin for "for each day"—is a fixed daily allowance an employer provides to a traveling employee. This method streamlines traditional expense reporting. Instead of an employee saving every receipt, the company provides a daily stipend based on the travel destination.

This approach offers convenience and helps manage budgets while maintaining tax compliance. When a business uses an accountable plan based on these government rates, the reimbursements are typically not considered taxable income for the employee. Understanding state per diem rates is essential for anyone who travels for work.

The Governing Bodies Behind the Rates

The primary authority for per diem rates within the Continental U.S. (CONUS) is the U.S. General Services Administration (GSA). Each year, the GSA conducts market research to determine the average cost of lodging and meals in different locations. While these rates are mandatory for federal employees, they have become the standard for many private companies and self-employed individuals.

The GSA establishes a standard rate that applies to most of the country. It also identifies non-standard areas (NSAs)—typically major cities or tourist destinations where costs are higher. These NSAs receive their own, higher per diem rates to reflect the increased cost of lodging and dining.

A Look at 2026 Per Diem Rate Adjustments

For the 2026 fiscal year (which runs from October 1, 2025, to September 30, 2026), the standard federal per diem rate has remained unchanged. The GSA maintained the standard rate at 107 for lodging and $59 for meals and incidental expenses (M&IE). This decision provides stability for businesses as they plan their travel budgets. You can find more specifics on the fiscal year 2026 rates over at jtbbts.com.

The total per diem allowance consists of several key parts. Here is a breakdown of what each component covers.

Quick Guide to Per Diem Rate Components

Component	Description	Typical Coverage
Lodging	The maximum amount allowed for the daily cost of a hotel or other accommodation.	Nightly room rate and any associated taxes or fees.
Meals	The portion of the allowance intended to cover the cost of food for the day.	Breakfast, lunch, and dinner.
Incidental Expenses (IE)	A small, fixed amount to cover miscellaneous costs and tips.	Fees and tips given to porters, baggage carriers, and hotel staff.

Knowing these components is the first step to applying state per diem rates correctly for both reimbursements and tax filings.

With this foundation, you can more confidently manage travel expenses and ensure your reporting is accurate and compliant.

How Per Diem Rates Are Determined and Updated

Per diem rates are the result of a rigorous, data-driven process managed primarily by the U.S. General Services Administration (GSA). This process aims to reflect the actual costs of business travel across the country.

It begins with the GSA's annual lodging data surveys. The GSA analyzes private-sector hotel pricing to determine the average cost for a mid-range hotel room in a given area. This research forms the basis of the system, ensuring the lodging allowance is based on current market rates.

Standard Versus Non-Standard Areas

After completing the research, the GSA categorizes locations into two main groups. The first is the standard rate for the Continental U.S. (CONUS), which covers thousands of counties where lodging and meal costs are relatively consistent. This creates a simple baseline for travel to most locations.

The GSA also designates Non-Standard Areas (NSAs)—locations where travel costs are significantly higher than average.

Examples of NSAs: These include large cities like New York, San Francisco, and Washington, D.C., as well as popular destinations where demand increases prices.

Rate Justification: By setting specific, higher rates for these NSAs, the GSA ensures that employees are not required to pay out-of-pocket when their work takes them to a more expensive city. This keeps the reimbursement fair and realistic.

Seasonal Fluctuations and M&IE Rules

The analysis also accounts for seasonal cost fluctuations. A ski resort in Colorado will have higher costs in January than in July, just as a beach destination's prices will increase in the summer. Consequently, the per diem rate for a single location can fluctuate throughout the year.

Finally, the Meals & Incidental Expenses (M&IE) portion has its own important guideline. While the daily M&IE rate for a location is fixed, it is subject to the 75% rule on the first and last days of travel. This means you receive 75% of the full M&IE rate on the day you depart and the day you return, as you typically do not need to purchase a full day's worth of meals. Adhering to this rule is key to accurate and compliant expense reports.

A State-By-State Reference for High-Cost Areas

While the standard per diem rate is sufficient for much of the country, it is often inadequate in major cities where lodging and food costs are higher. The U.S. General Services Administration (GSA) designates these specific locations as Non-Standard Areas (NSAs), giving them their own, higher state per diem rates.

Knowing which cities fall into this category is essential for creating accurate travel budgets and ensuring your team is fairly reimbursed. A business trip to New York City will have a completely different daily budget than one to a smaller town, and the per diem rates reflect that reality. This system is designed to prevent traveling employees from having to pay for business necessities out of their own pockets.

Identifying High-Cost Business Hubs

The difference between the standard rate and the rates for these high-cost hubs can be substantial. Major metro areas can have per diem rates anywhere from 80% to 135% higher than the national baseline. For instance, cities like San Francisco and New York City can command rates between 391 per day, which is nearly 2.3 times the standard $166 allowance.

Other major business destinations follow a similar pattern: Washington, D.C. is set at 310, Los Angeles at 300. These figures reflect the high costs of hotels and dining in these economic centers. For more information on the methodology, you can find insights about per diem rates and how they shape expense management.

The GSA uses a data-driven approach to set these rates. This flowchart illustrates how survey data for both standard (CONUS) and non-standard areas (NSA) is collected and analyzed.

As shown, local cost data is the primary driver for creating unique rates for these more expensive cities.

Comparing Key Metropolitan Areas

Comparing the numbers side-by-side highlights the differences. The following table breaks down the 2026 sample per diem rates for several major U.S. cities, separating the allowance for lodging from the portion for Meals & Incidental Expenses (M&IE).

2026 Sample Per Diem Rates for Major US Cities

This comparison shows the total per diem rate and its lodging/M&IE breakdown for key business hubs versus the standard federal rate.

City	Total Per Diem	Lodging Component	M&IE Component	Difference from Standard Rate
New York, NY	$391	$312	$79	+$225
San Francisco, CA	$375	$296	$79	+$209
Washington, D.C.	$331	$252	$79	+$165
Chicago, IL	$310	$231	$79	+$144
Los Angeles, CA	$302	$228	$74	+$136
Standard Rate	$166	$107	$59	$0

These examples illustrate why location-specific rates are so important. Using incorrect state per diem rates can lead to issues such as under-reimbursing employees or disrupting your entire travel budget. This data serves as a useful reference when planning any trip to a high-cost city.

Navigating Per Diem Rates for International Travel

When business travel extends beyond the U.S., domestic per diem rules no longer apply. For any travel outside the Continental U.S. (CONUS), you must refer to the rates set by the U.S. Department of State instead of the GSA.

The Department of State manages a separate, more dynamic system for these allowances. International rates are updated frequently, sometimes monthly, to keep pace with global economic changes. Factors like fluctuating currency exchange rates and local inflation can significantly alter the cost of doing business abroad.

Understanding International Rate Structures

Unlike domestic per diem, which often bundles expenses, international rates are typically broken down into a maximum allowance for lodging and a separate allowance for Meals & Incidental Expenses (M&IE). This separation is logical, as the cost of a hotel in London is independent of the price of a meal in Tokyo.

This distinction requires travelers and finance teams to be more meticulous. For those operating globally, correctly applying the separate lodging and M&IE rates for each location is crucial for accurate and compliant expense reporting.

High Costs in Global Business Hubs

International per diem rates can be significantly higher than domestic ones, often ranging from 700 per day. Major business hubs in Europe typically have some of the highest rates, with London at 506.

In Asia, a city like Tokyo has a rate of 377 daily, broken down into 140 for M&IE. You can explore international per diem rates to see how these allowances change by location and season.

An important detail is that the 75% rule for M&IE applies to international travel days, just as it does domestically. For example, if the M&IE rate for Germany is 105 (75% of $140) on your departure and return days. Correctly applying this rule is essential for accurate reimbursement, especially on trips spanning multiple countries.

Applying Per Diem for Taxes and Reimbursement

Knowing the official state per diem rates is the first step. The next is to apply those figures correctly for reimbursements and tax deductions, ensuring your business and employees remain compliant with IRS guidelines. There are generally two methods for handling business travel costs: the per diem allowance method and the actual expense method.

The per diem approach offers a fixed daily allowance, eliminating the need to save every receipt. In contrast, the actual expense method requires meticulous tracking and documentation of every dollar spent. For many, the simplicity of per diem is the preferred option.

Setting Up a Compliant Reimbursement System

For companies, providing tax-free per diem payments requires establishing an accountable plan. This is the IRS term for a reimbursement policy that confirms all expenses are for business purposes. To be compliant, your plan must satisfy three main rules:

Business Connection: The trip must have a clear and legitimate business purpose.

Substantiation: Employees must submit a report covering the time, place, and business reason for their travel in a timely manner.

Return of Excess: If an employee receives an allowance that exceeds the federal per diem rate they substantiated, they must return the excess amount to the company.

When these conditions are met, the per diem payments are not treated as wages and are not subject to income or payroll taxes. This benefits both the employer and the employee. If your business involves international travel, knowing where your per diem allowance provides the most value is also beneficial; reviewing the cheapest countries to travel can offer some perspective.

Per Diem for the Self-Employed

Self-employed individuals can also use state per diem rates. Instead of collecting meal receipts for tax purposes, you can use the M&IE (Meals & Incidental Expenses) per diem rate for the city you visited. This allows you to deduct business meal costs without itemizing every purchase.

For example, a self-employed consultant travels to Chicago for a 3-day work trip, where the M&IE rate is $79. The deduction would be calculated as follows:

Day 1 (Travel Day): 75% of the M&IE rate, which is $59.25.

Day 2 (Full Day): 100% of the M&IE rate, which is $79.00.

Day 3 (Travel Day): Another 75%, which is $59.25.

The total M&IE deduction for the trip is $197.50. For a more detailed look at the calculations, our guide on how to calculate per diem breaks down different scenarios. This method is a straightforward way to simplify your taxes and ensure you receive the deductions you are entitled to.

Common Per Diem Mistakes and How to Avoid Them

Per diem may seem simple, but minor errors can lead to significant issues, from rejected expense reports to tax compliance problems. Understanding these common pitfalls is the best way to avoid them.

A frequent error is confusing the lodging rate with the total daily allowance. An employee might see a 79 allowance for Meals & Incidental Expenses (M&IE). This can lead to confusion, budget shortfalls, and complicated expense reports.

Misapplying Key Rules and Using Old Data

Another common mistake is misapplying the 75% rule on travel days. On the first and last day of a trip, regulations stipulate that you receive only 75% of the M&IE rate, not the full amount. Forgetting this adjustment can cause an expense claim to be flagged for correction.

Using outdated state per diem rates is equally problematic. The GSA releases new figures each fiscal year, beginning on October 1st. A rate that was correct in September may be invalid the next day. Relying on old data will result in an incorrect reimbursement or tax deduction.

Maintaining Proper Records

Even with the correct rates, poor record-keeping can create issues. The most critical error is failing to maintain proper documentation. While per diem simplifies meal tracking, the IRS still requires proof that the business trip occurred. Without documentation, an entire expense claim could be invalidated during an audit.

Ensure you can substantiate every trip with clear records. For compliance, you must have:

Time: The dates you left and returned.

Place: The city, town, or area where you conducted business.

Purpose: The business reason for your travel.

If you cannot document these three elements, you cannot prove the expenses were for business. A clear expense reimbursement policy is essential to ensure everyone understands what is required. Mastering these rules is key to a smooth, compliant process.

Frequently Asked Questions About State Per Diem Rates

When working with per diem, several practical questions often arise. Here are answers to some of the most common inquiries about applying state per diem rates.

Do I Need to Keep Receipts if I Use Per Diem?

This is a frequent question with a nuanced answer. The primary benefit of per diem is not needing to save every receipt for meals and incidentals. For that portion of the allowance, receipts are generally not required.

However, you must keep records that prove the trip was for business. The IRS requires you to substantiate the travel itself.

This means you need to document the following:

Time: The specific dates you were traveling for work.

Place: Your destination, meaning the city or region where you conducted business.

Business Purpose: A clear explanation of what you did and why the trip was necessary.

You should also retain your lodging receipts. The standard per diem method typically covers only meals and incidental expenses, not the hotel bill.

What Is the High-Low Method for Per Diem?

The high-low method is an IRS-approved simplification for calculating per diem for travel within the Continental U.S.

Instead of looking up specific rates for every city, a company can use just two standard rates: one for designated high-cost areas and another for all other locations. This is beneficial for businesses with employees traveling to many different places, as it simplifies administration while maintaining compliance.

What if My Actual Travel Costs Exceed the Per Diem Rate?

This can happen. If you travel to a city during a major conference or event, hotel prices might be significantly higher than the standard GSA rate. If your necessary expenses exceed your per diem allowance, your options depend on your employer's policy.

Many companies will reimburse the higher, actual costs, provided you can present receipts and a valid reason. If your company's policy is strict, you may be able to deduct the unreimbursed portion on your personal tax return. This would require using the actual expense method and keeping detailed documentation for every cost.

Is Per Diem Considered Taxable Income?

As long as the payments are handled correctly, per diem is not considered taxable income for the employee. The key is that the payments must be made under what the IRS calls an "accountable plan."

An accountable plan requires that the trip has a legitimate business purpose, the employee substantiates the expenses, and any reimbursement paid in excess of the per diem rate is returned to the employer.