What Business Expenses Are Tax Deductible?
Whether you own a salon or a manufacturing company, running your business will come with operational expenses. If your business exists and operates to make a profit, you are eligible for business tax deductions.
What Are Fixed and Variable Business Expenses?
Business expenses can be variable or fixed, meaning they can be one-time, occasional or constant. Variable business expenses can include travel or startup costs, while a fixed business expense is constant, like rent or mortgage payments.
Each industry will have specific deduction standards. Generally, you only deduct what’s considered necessary for your business. Qualifications vary depending on your industry and business.
What Are Ordinary and Necessary Business Expenses?
The Internal Revenue Service — the IRS — determines ordinary expenses as common to the industry you work in. Necessary expenses are defined as expenses considered appropriate for your trade or industry or a standard cost associated with running a business, no matter the type of business.
For example, ordinary business expenses for a salon manager could include sinks, hair products and washers and dryers to clean towels. However, a washer and dryer would not be considered essential for an accountant because it’s not required for daily operation and it isn’t integral to providing their services as an accountant.
What Are Some Ordinary and Necessary Small Business Tax Deductions?
Ordinary and necessary business deductions cover many daily costs needed to operate effectively. The exact tax deductions depend on the industry and size of the business.

Common deductible expenses include:
- Rent or mortgage payments for business property
- Payroll costs, including wages, benefits and employer-paid payroll taxes
- Utilities, such as electricity, water and internet
- Office equipment, including computers, furniture and printers
- Software and subscriptions used to run your business, such as accounting platforms, project management tools and cloud-based systems
- Legal and professional fees, including accounting, consulting and legal support related to business operations
As businesses grow, these expenses often get more complicated. Properly categorizing and documenting them helps with compliance and maximizes available deductions.
How Business Expenses Affect Profitability
Business expenses directly affect your bottom line and determine if your company is profitable at the end of the year. These costs show up on your income statement, also called a profit and loss statement. They include both fixed and variable expenses that occur throughout the year. Some expenses stay the same each month, while others change based on activity, growth or seasonality.
Knowing which expenses are ordinary and necessary helps business owners make informed financial decisions and avoid problems during tax filing or an IRS review. Regularly reviewing expenses, comparing them to industry standards and keeping detailed records ensure that deductions are applied correctly. As businesses grow, tracking expenses becomes even more crucial, making professional guidance helpful for maintaining accuracy and long-term financial health.
Understanding how business expenses work on your financial statements clarifies why accurate classification and tracking are important for long-term profitability.
What Are Some Other Business Expense Deductions to Consider?
Beyond basic operating expenses, many businesses qualify for more deductions, but there are requirements to meet each qualification:
- Home office expenses: Businesses can deduct home office costs using the simplified method of $5 per square foot, as long as the space is used solely and regularly for business purposes.
- Gifts: You can deduct gifts from your taxes if your gift does not exceed $25. If you send a bottle of wine worth $100 to a client, you can only deduct $25 from that gift. You can also deduct promotional gifts like pens and coffee mugs up to $4 per item if it bears your business name. If a client takes home a pen with your business name, you can deduct it!
- Meals and entertainment: The IRS currently allows you to deduct 50% of your business meals. However, a business representative must be present and you must be conducting business. The IRS should not consider the meal extravagant, which includes any restaurants or meals not typical of any ordinary day. Proper documentation is essential to support these deductions.
- Travel expenses: Mileage and vehicle expenses are still a common deduction for many businesses. You can deduct automobile travel costs or the standard mileage rate. For 2026, the Internal Revenue Service has set the standard business mileage rate at 72.5 cents per mile. If you do deduct the actual expenses, you can deduct 50% of your depreciation, auto loan interest, fuel, maintenance, insurance and registration. Since mileage rates change regularly, business owners should always check that they are using the correct rate for the tax year they are filing. They should also keep detailed documentation to support any deductions in case of an IRS review.
Deductions for Growing Businesses
As businesses expand, additional expense categories often matter more, especially for companies in construction, real estate and professional services.

Workforce Development
Many businesses can deduct costs related to employee education and training, including certifications, professional seminars and continuing education programs. These investments support retention, skill development and long-term success.
Capital Assets vs. Repairs
Recognizing the difference between repairs and capital improvements is vital. Repairs that maintain current assets may be deductible right away. In contrast, capital improvements that enhance or extend the life of an asset usually need to be depreciated over time. This distinction is especially crucial for real estate and construction businesses.
Professional Services
Mid-sized and larger businesses often depend on outside expertise. Fees for consulting services, legal retainers and advisory support are typically deductible when linked to business operations. Correct classification helps ensure compliance with IRS guidelines.
Contact Marshall Jones Certified Public Accountants And Advisors Today
As your business grows, determining what you can deduct on your taxes becomes more complex and increasingly important. Marshall Jones Certified Public Accountants And Advisors work with businesses at every stage, offering strategic guidance to help check, confirm and optimize tax positions.
Whether you need help with tax planning or outsourced accounting, our team is ready to assist you in saving time, refocusing your resources and improving your operations.
Contact us today and our dedicated team of professionals will advise and guide you in your business tax preparation!
