Complete guide to business travel expense reimbursement

Travel expense reimbursement refers to the process of repaying employees for business travel expenses. These can include accommodations, transportation, meals, and other miscellaneous costs. An efficient travel reimbursement process ensures employees aren't financially burdened by work-related travel, allowing them to focus on their actual job responsibilities.

What is travel expense reimbursement?

Travel expense reimbursement is the process by which you pay back employees for the charges they incur while traveling for business. These charges, typically categorized as T&E expenses, include airfare, hotel rooms, rental cars, rideshares, meals, client entertainment, and other travel arrangements.

Companies reimburse travel expenses for compliance with labor laws, tax advantages (business expenses are usually deductible), and employee satisfaction. Without reimbursement, employees face personal financial burdens for work duties, leading to resentment and potential turnover.

• Out-of-pocket costs: Expenses employees pay personally while traveling for work, then submit for repayment
• Reimbursable vs. non-reimbursable: Your policy should clearly distinguish between approved business expenses and personal costs
• Policy-driven: You set the rules defining what qualifies for reimbursement, including spending limits and approval processes

Reimbursement for travel expenses promotes fairness, enables necessary business travel, and prevents employees from declining assignments due to cost concerns. Most companies establish spending limits and approval processes to balance business travel benefits with cost control.

Because travel-related expenses are often variable and most are incurred during the trip, it can be hard to pay for them up front. As a result, many businesses use traditional expense management software that requires employees to use their own funds for purchases and submit their expenses for reimbursement post-trip.

12 common travel expenses

Most travel expenses will likely fall into the same business expense category, but it's useful to see some specific examples. Here's a granular list of travel expenses to help you better understand what they are and why you should reimburse them:

Per diem

Per diem is a Latin phrase that means "by the day." Businesses use per diem allowances as a cost control measure for employees on multi-day trips.

The employee can submit a flat-rate line item on their expense report that includes all their out-of-pocket expenses up to an approved amount. Most companies don't allow meal expenses if they offer a per diem.

Plane tickets

When an employee needs to pay for their flight to meet a client or attend a conference, it counts as a reimbursable travel expense. Employees who want to upgrade to business or first class typically need to pay the difference out of pocket.

Rental cars

Rental cars are generally regarded as a reimbursable travel expense. Some reimbursement policies put a per diem rate on rental car fees to keep costs down.

If the employee wants to upgrade and get a luxury sedan or SUV, they have to pay the difference out of pocket. To be more cost-efficient, they could also opt for a rideshare or public transit.

Taxis, public transit, and rideshares

Employees can be reimbursed for taxi and public transit expenses, provided the trips are business-related. These are generally less expensive options than rental cars. The key is that employees need to collect receipts and note the business purpose, date, and destination.

Apps like Uber and Lyft have created new transportation options for business travelers. They're particularly useful for trade shows and conferences where employees only commute from the airport to the hotel or conference center and back. In congested urban areas such as New York and Los Angeles, ridesharing is often a more efficient option than renting a car.

Mileage

If your employees use their personal vehicles for business travel, your travel expense reimbursement policy should include a section on mileage reimbursement. This common employee travel expense can be tricky to calculate depending on the method you use, so it might require some special attention.

Lodging

Sending an employee to another state or country without setting up lodging is a recipe for disaster. Hotels, motels, and lodges can be booked up front on the company credit card or paid for by the employee and submitted on an expense report for reimbursement. Watch for room service charges and movie rentals—they often slip through the review process.

Meals

You have a few options when it comes to handling reimbursements for business travel meals. We already mentioned the per diem option. Another choice is to simply have the employee keep a receipt for the meal and submit it as a separate line item on their expense report. Gratuities may or may not be included, depending on your corporate travel policy.

Client entertainment

Wining and dining clients or customers is fairly common for many businesses. Your team may need to take a prospect out to a baseball game or a fancy dinner to close the deal. But be careful: This category could easily be abused if you're not scrutinizing your expenses carefully.

Business supplies, equipment, and shipping

Business supplies and equipment could include a TV or monitor for presentations, pens and clipboards for clients to fill out forms, signage for a trade show booth, or the shipping costs to get it all there. This is a broad category that's different for every business. If a traveling employee needs supplies or equipment to do their job, it's normally a reimbursable expense.

Communications expenses

It's important to stay connected while on the road. Business communications costs include cell phone plans, faxes, and Wi-Fi costs your team incurs while traveling.

Parking and tolls

Business-related parking at airports, hotels, and client locations is typically reimbursable, along with highway tolls during work travel. However, daily commuting, parking at the regular office, and personal errands during business trips usually aren't covered.

Conference fees and registration

Conference registration fees are generally reimbursable travel expenses when attendance serves a legitimate business purpose, such as professional development, networking, or industry research. This includes workshops, seminars, and trade shows.

You'll find a more comprehensive list of allowable travel expenses in IRS Publication 463.

How the travel expense reimbursement process works

The end-to-end travel expense process goes from incurring costs to receiving payment. Let's walk through a typical business trip to show how travel expense reporting comes to life.

Say your company sends its marketing lead to an out-of-state conference. You've already booked and paid for the airfare, car rental, and other transportation costs. When the employee lands, they go to the rent-a-car company, swipe their credit card, and drive away with a car. During their time away, they need to keep track of all their receipts for meals and incidentals.

Step 1. Document eligible business travel expenses

The employee collects itemized receipts as they incur costs during the trip. The IRS requires receipts for expenses of $75 or more, but it's a good practice to save everything. They should note the business purpose for each expense as they go. It's much easier than trying to remember details weeks later.

Step 2. Complete and submit an expense report

Once the employee returns, they fill out the required company forms with all expense details, dates, and the business purpose for each cost. Most companies require submission within 30–60 days after travel. The sooner the report is submitted, the sooner the reimbursement gets processed.

Step 3. Attach receipts and supporting documentation

The employee must include all itemized receipts, travel itineraries, and any pre-approvals required by your company's policy. Each expense needs proof of purchase receipts to back up the entries. If a receipt is missing, the expense can't be submitted and reimbursed.

Step 4. Manager reviews and approves expenses

The employee's supervisor verifies that the expenses align with company policy before forwarding the report to the finance department. This is where out-of-policy spending gets flagged and sent back for correction.

Step 5. Finance processes the reimbursement payment

The finance team validates the report for compliance and issues the payment, typically through payroll or direct deposit. Depending on your reimbursement policy, the actual payment may come a few weeks after approval.

The problem with expense reports

When the employee is the primary payer of travel costs during a business trip, you're counting on them to be organized enough to list every expense on an expense report and provide receipts to back those entries up.

The employee experience with expense reports is only one side of the equation. Their job is to make sure their expense report is accurate and well-organized. Your responsibility is to double-check that against your reimbursement policy, which takes time and resources.

This manual review of expense reports is another inefficiency in the expense approval process. Without a defined process—or, better yet, automation tools—reimbursing travel can be highly inefficient.

Tips for faster reimbursement

The best way to accelerate reimbursement for travel expenses is to follow the company's expense reimbursement policy.

• Encourage employees to submit reports promptly after returning from travel rather than waiting until month-end
• Promote corporate credit card usage to simplify the reconciliation process
• Train staff to keep receipts organized during travel and provide clear guidance on documentation requirements
• Set up pre-approval processes for large expenses to avoid delays during review
• Maintain updated preferred vendor lists to help verify hotel and airline charges more quickly

By following these best practices, you can significantly reduce reimbursement processing times and improve employee satisfaction with the expense management process.

IRS rules for travel expense reimbursement

Regardless of your internal expense policy, the IRS has determined what constitutes eligible travel expense deductions. Legal precedents in some states also require companies to reimburse employees for business-related travel expenses. The job of the expense auditor is to know about both.

Let's take a closer look at some of the rules the IRS imposes on reimbursement for travel expenses:

What qualifies as a tax home?

When processing business travel deductions, the IRS has a specific definition for tax home that might surprise your employees. An employee's tax home isn't necessarily where they live, but rather the general area where their main place of business is located.

For employees working at your company offices, their tax home is typically where their assigned office is located. For those who work remotely or from multiple locations, the tax home becomes the area where they earn the majority of their income.

This distinction matters because the IRS requires that employee travel takes them away from their tax home to qualify for business travel deductions. You can't approve expenses for traveling within an employee's tax home area, even if the trip is business-related.

For example, if an employee's office is in downtown Chicago, that's their tax home. A business trip to Milwaukee would qualify for travel deductions, but a meeting across town in Chicago wouldn't. The IRS considers the entire metropolitan area around an employee's regular workplace as part of their tax home.

Accountable vs. non-accountable plans

How you structure your reimbursement plan determines whether travel reimbursements are taxable. The IRS distinguishes between two types of plans:

Under an accountable plan, employees must substantiate expenses with receipts, the expenses must have a clear business connection, and any excess advances must be returned within a reasonable timeframe. Most companies operate under accountable plans because reimbursements aren't treated as taxable income.

Under a non-accountable plan, reimbursements are added to the employee's wages and are subject to income and payroll taxes. If you're unsure which plan you're operating under, consult a tax professional.

The $75 receipt rule for documentation

The IRS doesn't require receipts for individual expenses under $75, with the exception of lodging. However, many companies require receipts for all expenses regardless of amount to maintain clear records and protect against audit risk. Even when receipts aren't technically required, you still need to document the amount, date, place, and business purpose for each expense.

Tax write-offs for travel expenses

Your expense policy should allow reimbursement only for employee travel expenses that you can then write off as a deductible business expense on your taxes. There are several of these, and each expense deducted will need an associated receipt to protect your company in the event of an IRS audit. These are a few of the acceptable categories related to business travel:

• Travel expenses: This category includes airfare, tolls, taxes, and lodging. The IRS requires that the travel destination be away from the employee's normal work location and that the trip be longer than one business day.
• Business entertainment: The meal cost of a client dinner is only deductible up to 50%. But catering an office party or event can be 100% tax-deductible. Be careful in this category as it's the one IRS auditors look at most closely.
• Auto expenses: This category is most often used for business use of a personal vehicle. Businesses should also deduct rental cars here, not in the travel expense category.
• Office supplies: When office supplies are required for a business trip, the costs are deductible in this category
• Office furniture: Buying or renting a folding table and chairs for a presentation while traveling counts in the office furniture category. Make sure your employees know this if they request authorization to make such a purchase.
• Advertising and marketing: This might not seem like an expense that an employee would submit, but business cards and signage count as deductible business expenses
• Education: Sending an employee on a trip to take classes or attend an accredited seminar can produce multiple deductible expenses. Separate them carefully. The class fees go into the education category, not travel expenses.

Proper categorization and documentation of these travel-related expenses will maximize your business deductions while ensuring compliance with IRS requirements and audit protection.

Documentation and recordkeeping

The IRS expects comprehensive documentation for all business travel expenses. Each travel expense needs proper substantiation through receipts, detailed logs, and clear evidence of business purpose.

Mileage logs require the date, starting location, ending location, total miles, and business purpose for each trip. Business purpose documentation should be specific. "Sales trip to Chicago" provides much better information than simply "travel."

Create a filing system that works for your team, whether digital folders or physical files. Many finance teams scan receipts immediately and store them in cloud-based systems with clear naming conventions.

Poor recordkeeping creates significant risks for your business. Without proper documentation, you'll lose valuable deductions and face potential penalties during audits.

Do employers have to reimburse travel expenses?

There's no federal law that requires employers to reimburse travel expenses, but it's a standard business practice that's essential for employee retention. Some states have their own rules, though, and ignoring them can lead to fines.

• Federal law: No general requirement to reimburse travel expenses exists at the federal level
• State laws: California, Illinois, and other states mandate reimbursement for necessary business expenses. Check your state's specific requirements.
• Employment contracts: Some roles include reimbursement terms as part of the employment agreement, making it a contractual obligation
• Company policy: Most companies choose to reimburse travel expenses to attract and retain talent, even when not legally required

Small business owners often believe they can determine reimbursement on their own. That's not the case. Before deciding what to approve or deny, check your state's guidelines and consult with legal counsel if needed.

How to create a travel expense reimbursement policy

A clear travel and expense reimbursement policy sets expectations, ensures fairness, and reduces disputes. Without one, you're leaving spending decisions up to individual interpretation, which rarely ends well.

Define which travel expenses are eligible

List all reimbursable vs. non-reimbursable expense categories. Be specific about gray areas such as alcohol, in-room movies, spouse travel, or upgrades to first class. The more explicit your policy, the fewer disputes you'll deal with later.

Set spending limits by expense category

Establish clear caps for lodging, meals, and other categories. Consider creating different limits based on regional cost differences. For example, a hotel in Manhattan costs significantly more than one in Des Moines. Per diem rates from the GSA can serve as a useful benchmark.

Establish approval workflows and timelines

Define who's authorized to set up approval workflows and approve expenses at various dollar amounts. Specify the timeline for how long employees have to submit reports after a trip. Most companies set this at 30–60 days. Clear deadlines prevent expense reports from piling up at quarter-end.

Specify receipt and documentation requirements

Clearly state when receipts are required, what formats are acceptable (digital vs. paper), and the procedure for handling lost receipts. While the IRS doesn't require receipts for expenses under $75 (except lodging), many companies require them for all expenses to maintain tighter controls.

Choose between per diem and actual expense methods

You have two main approaches to reimbursing travel costs:

• Per diem method: Provides a fixed daily allowance, is simpler to administer, and allows employees to keep any unused funds. This works well for companies that want predictable travel costs.
• Actual expense method: Reimburses the exact costs backed by receipts, which is more accurate but creates a higher administrative burden. This approach gives you more granular visibility into spending.

Many companies use a hybrid approach—per diem for meals and incidentals, actual expense reimbursement for lodging and airfare.

Common challenges with travel expense reimbursement

Travel costs can be difficult to control when spending is left in the hands of employees and only realized weeks later.

Manual data entry and processing errors

Using spreadsheets and paper forms leads to mistakes in expense categorization, incorrect amounts, and duplicate entries. When travel expenses aren't categorized correctly, the time it takes your finance team to fix them adds up quickly and can create tax problems down the line.

Lost or missing receipts

Employees need to submit valid, original receipts to be reimbursed for their travel expenses. But collecting and organizing documentation isn't their primary focus on a business trip. Missing receipts create compliance gaps and delay reimbursements.

Delayed employee reimbursements

Travel reimbursement generally happens monthly or quarterly, so business travelers must pay their credit card balances on time. If the bill comes due before the reimbursement amount is processed, they're under pressure to cover it out of pocket, which breeds frustration.

Policy violations and fraud risk

Without clear, automated guardrails, out-of-policy spending and fraudulent submissions (like duplicate expenses) can slip through. This is where manual travel reimbursement workflows can lead to wasted time and potential expense fraud.

Limited visibility into travel spending

When you're relying on expense reports submitted weeks after a trip, you have no real-time view into what employees are spending. This makes it difficult to manage budgets, forecast accurately, or identify cost-saving opportunities before they pass you by.

Although these challenges seem overwhelming, much of this can be avoided using real-time expense management software.

Travel expense reimbursement best practices

To overcome the challenges above, follow these best practices. Some require manual effort, while others can be implemented by adding new tools to your tech stack.

Automate expense tracking and receipt capture

Use mobile apps that let employees capture receipts at the point of purchase and automatically match them to card transactions. Real-time expense tracking makes it easier to correct errors and control spending quickly, rather than discovering problems weeks after a trip.

Use corporate cards to reduce reimbursement volume

Issue company cards so employees don't have to pay out of pocket. This puts spending and cost control in your hands, not the employee's, and ensures transactions flow directly into your expense management system. It also eliminates the reimbursement cycle entirely for most expenses.

Integrate with your accounting software

Sync expense data to your general ledger automatically to eliminate manual journal entries and close the books more quickly. This also reduces the risk of miscategorized expenses causing problems at tax time.

Communicate policies clearly to employees

Share your travel reimbursement policy during employee onboarding and make it easily accessible in a central location. When employees know the rules up front, you'll spend less time dealing with out-of-policy submissions and back-and-forth corrections.

Review and update policies regularly

Revisit spending limits, eligible expense categories, and approval workflows at least annually. Travel costs change, new expense types emerge (like coworking space fees), and your business needs evolve. A stale policy creates confusion and compliance gaps.

Eliminate cash purchases

Take cash purchases off the table entirely. The IRS might deny them as deductions, and there's too much room for fraud. Require all business travel expenses to go through a corporate card or documented payment method.

How Ramp eliminates the headaches of travel expense reimbursement

Managing business travel expenses shouldn't feel like herding cats, but for many finance teams, that's exactly what it becomes. Between chasing down receipts, manually reviewing expense reports, and processing reimbursements weeks after trips end, the traditional approach to travel expense management drains valuable time and creates frustration for both employees and finance teams.

Ramp transforms this chaos into a faster, more accurate process through intelligent automation and real-time controls. With Ramp's corporate cards, employees can book travel and pay for expenses directly, eliminating the need for out-of-pocket spending and reimbursement requests altogether.

The platform automatically captures and categorizes transactions as they happen, matching receipts to charges without manual intervention. This means your team spends zero time hunting down missing documentation or reconciling credit card statements.

For expenses that do require reimbursement, Ramp's mobile app lets employees snap photos of receipts on the go, automatically extracting merchant details, amounts, and expense categories using advanced OCR technology. The system flags policy violations in real time, prompting employees to add missing information or correct miscategorized expenses before submission. This proactive approach prevents the back-and-forth that typically delays reimbursements by days or weeks.

Perhaps most importantly, Ramp's automated approval workflows route expenses to the right managers based on predetermined rules, accelerating the review process while maintaining proper controls. Finance teams can set spending limits by category, merchant, or employee, ensuring compliance without manual oversight.

The result? Employees get reimbursed more quickly, finance teams reclaim hours each week, and your company gains complete visibility into travel spending patterns that help you negotiate better rates and find cost-saving opportunities.

Travel expense reimbursement doesn't have to be painful

Managing travel expense reimbursements can be time-consuming and complicated no matter how capable your accounting team is. Fortunately, Ramp's modern expense management platform handles the most time-consuming parts of the process for you.

Try an interactive demo and see why more than 50,000 businesses choose Ramp to simplify their financial operations.