May 30, 2025

What are incidental expenses? Examples and tips for managing them

Key takeaways

  • Incidental expenses are minor, unbudgeted costs incurred during business travel or other activities.
  • They include things like fees and gratuities for transportation, dining, and lodging.
  • Also known as incidental costs or simply incidentals, they aren't part of the primary objective of the activity or trip but arise incidentally from the main business at hand.
  • Under the right circumstances, incidental expenses can be tax-deductible.
  • By setting clear policies, sticking to a budget, and implementing an emergency fund, you can effectively manage incidental expenses.

When you manage company finances, you know that sometimes extra business expenses crop up. Sometimes, they are expected, like the fees and gratuities you need to pay during a planned client dinner. And sometimes, they come out of nowhere, like last-minute lodging costs when your flight gets canceled.

But the key to keeping your budget in check is tracking and managing these kinds of expenditures so things don’t get out of hand.

In this article, we clarify what qualifies as an incidental expense, the tax implications of these costs, and how to manage them properly. We'll also outline best practices for tracking and budgeting for incidentals to set your business up for success.

What are incidentals?

Incidental expenses, or incidentals, are often minor business-related expenses that can come unexpectedly during business travel or other activities. Generally, these charges are not part of the main expenses of a trip or project, but they are still necessary for conducting business.

For some small businesses, incidentals can become a major problem for a tight budget, while for others, they may only come up a few times a year. Either way, the key to incidental expenses, like all expenses, is to manage and track them so they don’t add up and become out of control.

What are examples of incidentals?

Different types of expenses can appear in various contexts. Although circumstances vary, here are some common examples of incidental expenses that might come up during business travel:

  • Tips for hotel staff: You’ll often encounter incidental costs during business travel. While your lodging might be a planned expense built into your budget, the money you give hotel porters and housekeepers as a tip would be incidental.
  • Restaurant gratuities: Similarly, your restaurant meals might be part of the business trip budget, but the tips you leave for servers are incidental expenses.
  • Transportation extras: Parking fees, tolls, and driver tips are considered incidental expenses even though your rental car or driver reservation is typically budgeted.
  • Wi-Fi costs: Your hotel may charge for the use of high-speed internet, which would be another incidental cost.
  • Costs of theft or damage: If you damage or lose company property during business travel, the cost to repair or temporarily replace it would be an incidental expense.
  • Printing and photocopying: Sometimes, you need to pay to print, photocopy, or make large posters for a presentation during a trip. These costs might also qualify as incidental charges.
  • Team gifts or treats: Snacks for a meeting, awards for outstanding performance, or other gifts you might provide your team as encouragement would be considered incidental

Other incidental expenses include fees to repair office equipment, last-minute decor for a company event, or unforeseen fines. Taxes aren't typically considered incidentals because they're a budgeted and planned expense in your business finances.

Are incidental expenses tax-deductible?

Incidental expenses can be tax-deductible, but the specifics depend on factors like your local tax laws, the types of costs involved, and the IRS definition that business expenses be necessary and ordinary.

In general, here are some guidelines to keep in mind when assessing the tax implications of incidentals:

  • Your company can usually deduct incidental expenses that are directly related to normal business operations. This includes tips for hotel staff, office supplies, printing, and other expenses incurred during business travel.
  • Keeping accurate, descriptive, and up-to-date records of such incidental expenses is essential to provide support for these deductions and protect your company in the event of an audit. Always collect relevant documents like receipts and bills with details about the location, time, and the goods or services involved.
  • There's a federal per diem rate, as defined by the General Service Administration (GSA), that covers incidentals. The amount varies depending on where and when the business is being conducted, but it’s usually around a couple hundred dollars.

Challenges with incidental expense management

1. Difficulty in planning and tracking

By their nature, incidentals are often unpredictable and unplanned. It’s challenging for finance teams to budget for these expenses, as costs can vary depending on the nature of the trip or activity, or the location where it takes place.

Additionally, some incidental costs may come without receipts. For example, employees don’t receive receipts for the cash tips they give to hotel staff, like housekeeping or valets, which makes some incidental charges particularly difficult to track. Employees may end up paying for them out of pocket.

2. Risk of expense fraud

The lack of receipts for some incidentals makes it easier for employees to submit fraudulent expense reports. With no paper trail, employees may feel more comfortable claiming a higher amount for reimbursement and keeping the difference for themselves.

3. Inaccurate or missing data

The two challenges above can make it hard for businesses to forecast or report on incidental expenses accurately. Without receipts, employees must manually report incidentals, which can lead to simple human error. They may even forget to add some incidentals to their expense reports.

While these costs are generally small, they can add up over time and amount to significant company spend. This can skew financial analyses and forecasting, creating an unclear picture of your business’s financial health.

Tips for managing incidental expenses

Properly managing incidental expenses is important to provide an accurate picture of your financial situation.

You can manage your incidentals by following these tips:

Establish a process

Establish specific procedures for handling incidental expenses. These might include a process for managers to approve incidental spending claims and authorize expense reimbursement. Establish requirements like receipts or other documentation and multiple channels of approval in certain instances.

Communicate expectations

Establish company rules that dictate what counts as an incidental expense and what to do about these costs. Communicate to employees the process for tracking incidentals, including which documents to submit and how to obtain reimbursements.

Establish a budget

Create a budget that accounts for incidentals by reviewing your company's historical financial records. Review the data to determine past incidental expenses and any recurring patterns. This will help you establish the usual incidental sources and how much money goes toward them. Try to separate incidentals into expense categories to allocate the correct portions of your budget to these areas.

Set travel guidelines

Setting clear travel and expense (T&E) guidelines can help control incidental expenses. For example, you could implement a per diem allowance to cover any incidental costs employees incur during business travel. If the employee spends more than the established per diem, they either pay out of pocket or have to submit a valid business case for the expense. As an alternative, some corporate cards let you set spend limits at the card or expense policy level.

Create an emergency fund

Incidental expenses tend to be small, but they can add up, especially if they aren't anticipated. Occasionally, there might be higher-cost incidentals as well. Creating an emergency fund with designated money for incidentals can provide some reassurance in the event of unexpected costs.

Keep the system and budget up to date

Monitor your expenses closely. Adjust your budget and how much you set aside for incidental expenses based on past spending and future projections. Update company policies around incidentals to maximize savings and efficiency as needed. Nothing in business financing is set in stone, and you'll likely find room for improvement in certain areas. But by tracking spending patterns, you can make informed decisions about your budget.

Automate your expense tracking

Keeping track of any company expenses, including incidental expenses, can be a huge hassle for you and your employees. Consider implementing software or other accounting systems that allow you to automate the tedious and time-consuming parts of expense tracking.

Streamline incidental expense tracking with Ramp

Tracking financial transactions like incidental expenses requires time and effort. But the right tools can automate many of the most tedious aspects. Ramp's expense management platform helps you streamline your process for tracking incidentals, curbing unnecessary spending, and effectively budgeting for these costs.

Our corporate cards offer tools for setting spending limits, reporting expenses, and categorizing charges, providing you with accurate data on incidental expenses to help establish your budget. Ramp also automates the expense receipt and reimbursement process, freeing up countless hours for your finance team.

See how Ramp can automate your expense tracking and help you budget for travel expenses more effectively.

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Ali MerciecaFinance Writer and Editor, Ramp
Ali Mercieca is a Finance Writer and Content Editor at Ramp. Prior to Ramp, she worked with Robinhood on the editorial strategy for their financial literacy articles and with Nearside, an online banking platform, overseeing their banking and finance blog. Ali holds a B.A. in Psychology and Philosophy from York University and can be found writing about editorial content strategy and SEO on her Substack.
Ramp is dedicated to helping businesses of all sizes make informed decisions. We adhere to strict editorial guidelines to ensure that our content meets and maintains our high standards.

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