Small Business Tax Deductions You Might Be Missing

If you own a small business, you already know every dollar counts. What you might not know is that many common expenses are tax-deductible. The IRS allows you to subtract certain costs from your taxable income, lowering your overall tax bill. But if you don’t claim them, you’re leaving money on the table. Here are the small business tax deductions you might be missing and how to start taking advantage of them.

1. Home Office Deduction

If you use part of your home regularly and exclusively for business, you can deduct home office expenses. This applies whether you own or rent. The space must be your principal place of business or where you meet clients.

There are two ways to calculate the deduction: the simplified method (deduct $5 per square foot, up to 300 square feet) or the regular method, which involves allocating actual expenses like mortgage interest, utilities, and rent. For most people, the simplified method is easier and still provides a nice deduction.

Common mistake: claiming a home office deduction triggers an audit. That’s a myth. The deduction is legitimate if you meet the rules. Just be careful: if you have a separate building, like a garage or shed, you can deduct that too. Also, if you use part of your home for storage of inventory or product samples, that space qualifies even if you don’t use it exclusively—but you must use it regularly.

2. Vehicle Expenses

If you use your car for business, you can deduct the business portion of your vehicle expenses. You have two options: the standard mileage rate or actual expenses. The standard mileage rate for 2024 is 67 cents per mile. To use this method, you need to log the date, miles driven, and business purpose of each trip.

If you choose actual expenses, you can deduct gas, oil, repairs, insurance, depreciation, and lease payments. Keep all receipts and a detailed mileage log. Whichever method you choose, commuting between home and a regular workplace is not deductible.

Tip: If you use your car for both business and personal trips, you can only deduct the business portion. A mileage log is essential. Many apps can track trips automatically. Also, if you use the standard mileage rate in the first year, you can switch to actual expenses later—but not the other way around.

3. Business Meals and Entertainment

You can deduct 50% of the cost of business meals. To qualify, the meal must be ordinary and necessary, you must be present, and the expense must not be lavish. You also need to record the date, amount, place, business purpose, and names of people you dined with. Entertainment expenses (like tickets to shows) are generally not deductible after 2017, so stick to meals.

What about meals for yourself? If you’re traveling away from home overnight, meals during that trip are 100% deductible in some cases? Actually, business travel meals are also 50% deductible. But meals while working late at your office are not deductible. Also, if you provide meals to employees, those may be 100% deductible if they’re for the convenience of the employer.

4. Health Insurance Premiums

If you are self-employed and pay for your own health insurance, you can deduct premiums for yourself, your spouse, and your dependents. This deduction is taken on Form 1040, line 16, and reduces your adjusted gross income. It also applies to dental and long-term care insurance. However, if you are eligible for an employer-subsidized plan through a spouse’s job, you may not qualify.

Important: This deduction is available even if you don’t itemize. It’s an adjustment to income, so it lowers your AGI. If you have a net loss from your business, you can’t take this deduction. Also, you can’t deduct premiums paid with pre-tax dollars through a cafeteria plan.

5. Retirement Plan Contributions

Contributing to a retirement plan reduces your taxable income while you save for the future. Options include SEP IRAs, SIMPLE IRAs, solo 401(k)s, and traditional IRAs. For 2024, you can contribute up to $69,000 to a solo 401(k) if you’re under 50. Even a small contribution can save you hundreds in taxes.

Which plan is best? A SEP IRA is easy to set up and allows high contributions but requires you to contribute the same percentage for employees if you have them. A solo 401(k) is great if you have no employees and want to maximize contributions. A SIMPLE IRA is good if you have a few employees. Compare the rules before choosing.

6. Education and Professional Development

Courses, workshops, conferences, and books that maintain or improve skills needed in your business are deductible. The expense must be related to your current business—not a new career. For example, a graphic designer can deduct an online course on the latest design software. Keep records of the cost and the business reason.

What if the course leads to a new certification? As long as it maintains or improves existing skills, it’s deductible. But if it qualifies you for a new trade or business, it’s not. Also, travel costs to attend a conference are deductible, but meals are only 50% deductible.

7. Software and Subscriptions

Software you use for your business, including accounting software, project management tools, and industry-specific programs, is deductible. Subscription services like cloud storage, email marketing, and professional publications also qualify. If you need help organizing your deductions, a proper bookkeeping system is key.

One-time software purchases can be deducted as a business expense. But if the software has a useful life of more than one year, you may need to depreciate it. Most software subscriptions are deductible in full each year.

8. Professional Fees

Fees paid to lawyers, accountants, consultants, and bookkeepers are deductible. If you hire someone to set up your bookkeeping system or fix QuickBooks errors, those costs count too. Even fees for business advice or contract review are deductible. Just make sure the services relate to your business.

Legal fees for starting a business are capital expenses and must be amortized over 15 years. But fees for ongoing operations are deductible. Also, if you pay a retainer, it’s deductible when paid, not when earned.

9. Interest on Business Loans

Interest on loans used for business purposes is deductible. This includes credit card interest on business purchases, business lines of credit, and equipment loans. Personal loan interest is not deductible, so keep business and personal expenses separate.

What about interest on a home equity loan used for business? The IRS says the interest is deductible if the loan is secured by your home and used for business. But you need to allocate the interest between personal and business use. Also, if you use a personal credit card for business, only the business portion of interest is deductible.

10. Depreciation

When you buy large assets like equipment, furniture, or vehicles, you can deduct their cost over time through depreciation. Section 179 allows you to deduct the full purchase price in the year you buy it (up to a limit). Bonus depreciation lets you deduct a percentage immediately. This is a powerful way to reduce taxable income when you make big purchases.

Common mistake: forgetting to take depreciation on assets you already bought. If you didn’t claim it in prior years, you might be able to file an amended return. Also, if you sell a depreciated asset, you may have to recapture the depreciation as income. Plan ahead.

11. Advertising and Marketing

Costs for advertising your business are fully deductible. This includes social media ads, Google Ads, print ads, website development, and promotional materials like business cards and flyers. Even the cost of a domain name and web hosting counts. Keep records of each expense and its purpose.

One catch: if you pay for advertising that benefits you beyond one year, like a long-term billboard contract, you may need to capitalize it. But for most small businesses, ad costs are fully deductible each year.

12. Startup Costs

If you’re starting a new business, you can deduct up to $5,000 of startup costs in your first year. Startup costs include market research, advertising before opening, and fees for consultants. Any remaining costs must be amortized over 15 years. The $5,000 limit is reduced if total startup costs exceed $50,000. This is a great deduction for new businesses, but you must elect it on your tax return.

How to Claim These Deductions

To claim deductions, you need good records. Keep receipts, invoices, bank statements, and mileage logs. Use accounting software or a spreadsheet to track expenses throughout the year. At tax time, report your deductions on Schedule C (for sole proprietors) or the appropriate form for your business structure. If you’re unsure about any deduction, consult a tax professional.

Don’t let missing deductions cost you. Review your expenses now and make sure you’re claiming every deduction you’re entitled to. Your future self—and your bottom line—will thank you.

Frequently asked questions

What are the most commonly missed small business tax deductions?

Home office expenses, vehicle mileage, business meals, health insurance premiums, retirement contributions, education costs, software subscriptions, professional fees, and depreciation are often overlooked. Many business owners don’t track these expenses throughout the year, so they forget to claim them.

Can I deduct my home office if I work from a coffee shop sometimes?

Yes, as long as you have a dedicated space in your home used regularly and exclusively for business. Even if you occasionally work elsewhere, you can still claim the home office deduction if it’s your principal place of business.

What records do I need for business meal deductions?

You need to record the date, amount, place, business purpose, and names of the people you dined with. Keep the receipt and note the business discussion. The meal must not be lavish, and you must be present.

Is self-employed health insurance deductible?

Yes, if you are self-employed and not eligible for an employer-subsidized plan through a spouse, you can deduct premiums for yourself, your spouse, and dependents. This deduction is taken on Form 1040, line 16.

How do I deduct vehicle expenses for my business?

You can use the standard mileage rate (67 cents per mile in 2024) or deduct actual expenses like gas, repairs, and insurance. You need a mileage log showing date, miles, and business purpose. Commuting is not deductible.