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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. Some of the common types of business expenses include:

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

In this article, we’ll break down the process of business expense categorization, and list 35 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.


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.

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.

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.

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.

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.

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 35 common business expense categories

Not sure where to start with creating business expense categories? Here are 35 common business expense categories. Of course, you’ll want to tailor these to your own company’s structure and business operations.

1. Payroll and employee benefits: Employee health insurance, retirement plans, workers compensation, bonuses, home office expenses, paid vacations.

2. General and administrative: Office supplies (i.e., computers, printers, pens), cleaning services for the office space, meal stipends, other office expenses.

3. Rent and leases: Expenses related to leasing office space, equipment, or vehicles.

4. Marketing and advertising: Social media ads, marketing consultants, contracted marketing services, business cards.

5. Research and development (R&D): Software subscriptions, product testing equipment.

6. Professional services: Contracted designers and recruiters, legal fees, CPA services.

7. Utilities: Electricity, water, gas, internet, phone services.

8. Salaries and wages: Payments to employees, including salaries, wages, bonuses, and commissions.

9. Insurance: Business insurance premiums, including general liability insurance, property insurance, and workers' compensation insurance.

10. Travel: Airfare, lodging, meals, transportation related to business travel.

11. Depreciation: Expenses related to the depreciation of business assets, such as equipment, vehicles, and buildings.

12. Maintenance and repairs: Costs to maintain and repair equipment, vehicles, and facilities.

13. Taxes and licenses: Business taxes, permits, licenses required to operate legally.

14. Training and development: Employee training, seminars, workshops, conferences.

15. Inventory: Cost of goods sold (COGS), including raw materials, finished products, inventory management expenses.

16. Interest: Interest payments on business loans, credit cards, debt.

17. Legal fees: Legal consultations, litigation costs, contract drafting.

18. Shipping and postage: Shipping costs for products, postage for mail.

19. Charitable contributions: Donations to charitable organizations.

20. Utilities for business vehicles: Fuel, maintenance, insurance for business vehicles.

21. Employee meals and entertainment: Meals and entertainment expenses related to business activities.

22. Bank interest: Interest paid on business loans, lines of credit.

23. Employee training: Training programs, courses, seminars for employees.

24. Website expenses: Domain registration, hosting fees, website design and maintenance.

25. Consulting fees: Fees paid to external consultants for specialized services.

26. Travel insurance: Insurance coverage for business-related travel.

27. Security: Expenses related to business security systems, personnel.

28. Equipment maintenance contracts: Contracts for maintenance of equipment.

29. Public relations: Costs associated with public relations activities, press releases.

30. Employee transportation benefits: Transportation benefits provided to employees.

31. Pension contributions: Contributions to employee pension plans.

32. Employee assistance programs: Programs to support employee well-being.

33. Gifts: Business-related gifts to clients, employees, or vendors.

34. Bank fees: Expenses related to banking, including monthly service fees for your business checking bank account.

35. Telecommunications: Phone and internet 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.

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.

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.

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:

Deductible expense category
  • Cost of goods sold: This is deducted from your gross receipts to find your gross profits for the year. Note, you cannot deduct the cost of calculating the cost of goods sold.
  • Capital expenses
    • Startup costs
    • Repairs or maintenance to the business property
    • Business assets
  • Not-for-profit activities and charitable contributions
  • Business travel expenses
  • Awards
  • Bonuses
  • Education benefits
  • Fringe benefits: While fringe benefits are deductible for the employer, they are taxable for the employee, so when categorizing these expenses, make sure to categorize them as “fringe benefits” and map them to the correct GL accounts so the amounts are easily added to W2s.
  • Loans or advances
  • Property (such as company stock)
  • Business expense reimbursements
  • Sick and vacation pay
If you will receive equity in the property or a title of any kind, the rent is not deductible.
  • Taxes on leased property
  • Improvements by lessee
  • Cost of getting a lease
  • Home office expenses
  • Business use of your car
  • Personal cell phone used at least 50% of the time for work
  • Depreciation of personal property being used for your business
  • Property taxes
  • State and local income taxes
  • Foreign income taxes
  • Employment taxes
  • Other miscellaneous taxes

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.

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, often referred to as non-deductible expenses, include the following:

Non-deductible expense category
These are considered assets in your business, so they must be capitalized rather than deducted.
  • Business startup costs
  • Business assets
  • Improvements to business property: While generally, these expenses are not deductible, some of them may fall under special provisions and can be recouped through amortization deductions.
  • Self-insurance reserve funds
  • Loss of earnings
  • Certain life insurances and annuities
  • Insurance required to secure a loan
Federal income taxes

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.

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

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.

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.

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.

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.

Try Ramp for free
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Content Lead, Ramp
Fiona writes about B2B growth strategies and digital marketing. Prior to Ramp, she led content teams at Google and Intercom. Fiona graduated from UC Berkeley with a degree in English. Outside of work, she spends time dreaming about hiking the Pacific Crest Trail one day.
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