The 5 major business expense categories you should be aware of in 2024

Organizing your expenses into business expense categories—and setting up automatic expense management software to keep track of them—ensures you’ll be fully prepared come tax season, or in the event of an audit.‍ The 5 broad categories that business expenses are commonly grouped under include:

1. Payroll and employee benefits
2. General and administrative
3. Marketing and advertising
4. Research and development (R&D)
5. Professional services

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In this article, we’ll break down the process of business expense categorization, and list some of the specific types of expenses, so you can start applying it to your own accounting practice. Plus, we’ll give you some helpful tools for automating it. First, though, here’s a deeper explanation of what we mean when we talk about business expense categorization.

What is business expense categorization?

Expense categorization is the process of grouping expenses for financial control and tax purposes. For example, if your company paid for airfare for a business trip, you may categorize that as a “travel” expense. And, because it is categorized as such, specific transaction details and documentation would then be required so you can write it off come tax time.

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Trying to go back and categorize your expenses at the end of the year is a sure way to lose valuable time and money. Instead, it’s best to categorize and map your expenses in advance. You’ll make it easier to do reporting and save the maximum amount in business tax deductions.

How do you categorize business expenses?

Business expenses can be categorized into various buckets, including payroll, employee benefits, general and administrative expenses, marketing and advertising, research and development, and payments for professional services.

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The key is to set up categorization that reflects your internal company structure, e.g. by department and spend management needs. Just make sure to include enough detail and documentation to easily pull reports that satisfy IRS compliance.

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For example, expenses may be classified by type, like “General and Admin” and “Research and Development” (R&D), and then sorted by department, like “Marketing” and “Engineering.” So, when an engineer in the company buys software for building new products, the expense is categorized as an R&D expense, incurred by the Engineering Department and attributed to that department.

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It’s worth noting that you’ll likely need more granular categories for internal P&L statements than you will for IRS categorization. To make your life easier, those more granular categories should each fit into one of the IRS categories.

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There’s no need to overcomplicate classifying different types of expenses. Keep categories general and limit the number of general ledger (GL) accounts you have. Use custom fields to capture the “who, what, where, and why” of each transaction, so they can be easily sorted or reclassified for different reports as needed.

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For example, for internal purposes, you may only need to know that an employee made a meal purchase, but if you want to deduct the expense as a business meal come tax time, you’ll need to know if the employee ate alone, with a team, or with a client, and what was discussed. You may not need an entire category for each of these details, but defining transaction details in your spend management platform can make reporting and increasing tax deductions much easier.

List of common business expense categories

Not sure where to start with creating business expense categories? Here are a few common lists, but again, you’ll want to tailor these to your own company’s structure and business operations.

Payroll and employee benefits

The payroll and employee benefits category could include the following types of expenses:

• Employee health insurance
• Retirement plans
• Workers compensation
• Bonuses
• Home office expenses
• Paid vacations

General and administrative

The general and administrative category includes regular operating expenses such as:

• Office supplies (i.e., computers, printers, pens)
• Rent and leases
• Cleaning services for the office space
• Transportation and other vehicle expenses
• Meal stipends
• Other office expenses
• Bank fees (like a monthly service fee for your business checking bank account)

Marketing and advertising

The marketing and advertising category includes costs that relate to the promotion of your business:

• Social media ads
• Marketing consultants
• contracted marketing services
• Business cards

Research and development (R&D)

These are expenses incurred in the process of building a product, including:

• Software subscriptions
• Product testing equipment

Professional services

Professional services encompass fees for external consultants and contractors:

• Contracted designers and recruiters
• Legal fees
• CPA services‍

How to maximize tax deductions for business expenses

To optimize your expense categories for business tax deductions, it’s important first to understand what’s deductible and what documentation is needed for compliance when claiming expenses on your tax return and filing small business taxes.

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Your source of truth for this is IRS publication 535, which dictates what’s deductible or not. According to this document, an expenditure is considered deductible if it can be proven “ordinary and necessary” for business purposes.

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For example, you can usually count a business lunch with a prospective client as ordinary, and even necessary, to cultivating business. However, a personal pizza order you placed over the weekend may not be so necessary or ordinary to your business growth and can't be considered a write-off. Learn more about deductions allowed under IRS Publication 535.

What can I deduct as a business expense?

You can deduct a variety of business expenses such as rent or lease payments, utilities, office supplies, employee salaries, advertising, insurance, professional fees, and the cost of goods sold, as long as they’re necessary in the course of conducting your business.

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What counts as deductible business expenses will depend on your particular business structure, but this list includes the major expense categories that are deductible per the IRS:

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Each of these categories has precise requirements for deduction and is subject to change at the discretion of the IRS. So it’s a good idea to subscribe to IRS e-News alerts, review the “recent developments” section of the IRS publication 535 regularly, and work closely with a tax advisor to maximize deductions.

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Taking the time at the start of each tax year to optimize your expense categories and map to ledgers based on IRS changes will make tax season significantly smoother.

Non-tax-deductible expenses

Some expenses you want to watch out for that aren't tax deductible include the following:

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How to make sure your business expense categories are correct

So, you’ve determined categories that align with your internal finance needs and IRS compliance, but you’re still faced with actually enforcing categorization. Manually processing expenses has proven unreliable and time-consuming, so how do you ensure expenses are consistently and correctly categorized?

Use expense management software

Startup and small business expense management software automates expense mapping and categorization with customizable fields, prompts for required documentation, and integrates with bookkeeping software.

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Gathering all of your expenses in a central software where every expense process can take place provides a clear audit trail and easy reporting.

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With every transaction in one platform, it’s easy to pull a report for a single expense category across all departments and general ledgers and then sync with bookkeeping and tax-filing software.

Automate workflows

Expense management software that's built into modern corporate credit cards adds an additional layer of data control by providing customized card controls that inform every step of the transaction.‍

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Custom no-code workflows provide consistent expense documentation by prompting employees throughout the transaction process. At each transaction, employees are immediately prompted via SMS or email to submit documentation.

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Once documentation is submitted, automated receipt matching ties it to the corresponding expense and prompts the employee to fill in a memo. The expense management software then uses automation and AI to categorize the expense and sync the information with your accounting software.

Get back your time and money during tax season with Ramp

Tax season doesn’t have to be stressful. Saving time and money shouldn’t be complicated, even if you’re a small business owner or startup founder without a big finance department.

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With Ramp’s powerful finance automation and AI behind your business expense categorization, tax season is just another day at the office. Learn more about how we’re saving our customers an average of $100k in their first year using our software.