Running a small business is exciting, but when tax time comes around, most business owners leave money on the table. Tax deductions are completely legal ways to lower your tax bill, yet many people either don’t know they exist or forget to claim them.

The good news? With a little over two months left in 2026, there is still time to act. And this year, the rules work in your favor more than they have in a long time.

This guide breaks each deduction down in plain English: who qualifies, how much you can claim, a real-number example, and the records you need. Whether you freelance, run a shop, manage an LLC with employees, or just launched last month, you’ll find something worth acting on.

What Changed: The One Big Beautiful Bill Act

Signed into law on July 4, 2025, the One Big Beautiful Bill Act (OBBBA) changed several rules that matter to small businesses. It made some popular tax breaks permanent, raised others, and brought back one of the most powerful write-offs available. Here are the deductions worth a closer look.

Here are the main 2026 figures covered in this guide.

1. Equipment, Computers and Vehicles: Section 179 and Bonus Depreciation

Bought a new laptop, office furniture, machinery or a work vehicle? You may be able to deduct the full cost in the year you start using it instead of spreading it over several years.

• Section 179: For 2026, the deduction limit is $2.56 million, and it begins to phase out once your total equipment purchases pass $4.09 million.
• 100% bonus depreciation: The OBBBA made it permanent for qualifying property acquired and placed in service after January 19, 2025.

The key word is placed in service. If you want the deduction for 2026, the equipment must be bought and ready for use by December 31. Section 179 also cannot create a business loss, so your tax pro can help you pick the right mix of the two.

What counts as qualifying equipment? Computers, printers, phones, office furniture, tools, machinery and off-the-shelf software generally qualify. Land and buildings themselves usually do not, although certain improvements to commercial buildings can.

What about vehicles? The vehicle must be used more than 50% for business. Heavy SUVs, trucks and vans (over 6,000 pounds gross vehicle weight) can qualify for larger first-year deductions, but caps apply to heavy SUVs, and regular passenger cars have annual depreciation limits. A mileage log is essential either way.

Example: You buy $5,000 of computers and furniture in November and start using them right away. If you are in the 24% federal bracket, writing off the full amount in 2026 could save about $1,200 in federal income tax, plus possible self-employment tax savings.

One caution: A deduction only returns a portion of what you spend. Buy what your business truly needs, not what you think you can write off.

2. The Qualified Business Income (QBI) Deduction

If you run a sole proprietorship, LLC, partnership, or S corporation, you may be able to deduct up to 20% of your qualified business income. This deduction was set to expire after 2025, but the new law made it permanent.

Starting in 2026, there is also a minimum QBI deduction of $400 for owners who materially participate in a business and have at least $1,000 of qualified business income. Income limits apply, and some service businesses face extra rules, so it is worth running the numbers each year.

Who can claim it? Sole proprietors, partners, S corporation shareholders, and owners of LLCs are taxed as one of those. Regular C corporations cannot.

Income limits: Once taxable income passes certain levels, the deduction can shrink or disappear, especially for specified service businesses such as health care, law, accounting, consulting, and financial services. For 2026, a married couple filing jointly generally starts to see these limits at $403,500 of taxable income.

Example: If your qualified business income is $60,000, your deduction could be up to $12,000, as long as you are under the income limits and your overall taxable income is high enough to absorb it. The deduction lowers income tax, not self-employment tax.

Because QBI is calculated after your business expenses, every legitimate deduction you claim still matters.

3. Business Mileage (Note the Mid-Year Change)

Driving to meet clients, pick up supplies, or visit job sites adds up fast. The IRS standard mileage rate for 2026 is a rare split-year rate:

• January 1 to June 30: 72.5 cents per mile
• July 1 to December 31: 76 cents per mile

The date of each trip decides which rate applies, so a dated mileage log is more important than ever. Commuting from home to a regular workplace does not count.

Example: Say you drive 12,000 business miles in 2026, split evenly before and after July 1.

• 6,000 miles × 72.5¢ = $4,350
• 6,000 miles × 76¢ = $4,560
• Total deduction: $8,910

What counts: Trips to meet clients, visit job sites, pick up supplies, go to the bank or post office for the business, and travel between work locations. Parking fees and tolls for business trips can be deducted on top of the standard rate.

Standard rate or actual expenses? The standard rate is simpler. Actual expenses (gas, repairs, insurance, depreciation) can be higher for expensive vehicles. If you own the vehicle and want the standard rate, you generally must choose it in the first year you use the car for business.

Your log should show: the date, starting point and destination, miles driven, and the business purpose of each trip. Mileage apps make this almost automatic.

4. Home Office

This is one of the most missed deductions. You don’t need to deduct your whole house, just the part you use regularly and exclusively for business. A spare room or a dedicated desk area can qualify.

The simplified method lets you deduct $5 per square foot, up to 300 square feet (a maximum of $1,500), with no need to track every utility bill. Many owners find it much easier than they expected. Keep in mind this applies to self-employed owners, not regular employees.

Two ways to claim it:

• Simplified method: $5 per square foot of office space, up to 300 square feet. A 200-square-foot office gives you a $1,000 deduction with almost no paperwork.
• Regular method: You deduct the business percentage of actual home costs such as rent or mortgage interest, utilities, insurance and repairs. This can produce a bigger deduction for larger spaces, but it needs more records (Form 8829).

The exclusive-use rule: A desk in the corner of the living room that your family also uses doesn’t count. A spare bedroom, or a clearly defined area used only for work, does. The space must also be your principal place of business, which includes where you do your administrative work if you have no other fixed location.

S corporation owners: You are treated as an employee of your own company, so the home office is usually handled through an accountable plan reimbursement instead. Ask your advisor to set it up correctly.

5. Startup Costs

If your business is new, the money you spent getting it off the ground may be deductible. Legal fees, market research, website setup and pre-opening advertising are common examples. You can generally deduct up to $5,000 of startup costs in your first year (this amount shrinks once total startup costs pass $50,000), and the rest is spread out over 15 years.

What counts as a startup cost? Expenses you pay before your business officially opens, such as market research, legal and professional fees, advertising before launch, training, and travel to secure suppliers or clients. Costs of forming a corporation or partnership are treated separately and can have their own first-year deduction of up to $5,000.

Example: You spend $8,000 getting your business ready. You can deduct $5,000 in your first year, and the remaining $3,000 is spread over 180 months (about $16.67 per month).

Timing matters: Once your business is open and operating, new costs are regular business expenses and can be deducted as you pay them. Keep a list of everything you spent before your opening date.

6. Software, Subscriptions and Digital Tools

Design software, cloud storage, accounting apps, website hosting, email marketing tools, and other business subscriptions are usually deductible. Many owners forget the small monthly charges, but they add up to a big number by December. If you use a phone or internet service for both personal and business needs, you can deduct the business portion.

Common examples: Accounting and invoicing apps, design and editing software, project management tools, website hosting and domain names, email marketing platforms, cloud storage, and professional memberships.

Mixed personal and business use: If you use a phone, internet plan or subscription for both, deduct only the business percentage. A simple, honest estimate (for example, 60% business) with a note on how you arrived at it is better than claiming 100% or nothing.

Tip: Review your credit card and bank statements month by month. Small recurring charges are the most commonly missed deductions.

7. Business Meals

Meals with clients, customers or business contacts are generally 50% deductible when there is a clear business purpose. Always write down who you met and what you discussed on the receipt or in your records.

What qualifies: Meals with clients, customers, vendors or business contacts where business is discussed, and meals while traveling overnight for work.

What doesn’t: Entertainment, such as concert or sporting event tickets, is generally not deductible. Purely social meals don’t count either.

Example: If you spend $2,000 on qualifying client meals during the year, $1,000 is deductible.

What to record: The date, place, amount, who attended and the business reason, on the receipt or in your records.

8. Health Insurance and Retirement Contributions

Self-employed owners may be able to deduct health insurance premiums for themselves, their spouse and their dependents. Contributions to retirement plans such as a SEP-IRA or Solo 401(k) can also lower your taxable income while you build savings for the future. Contribution limits apply, so check the numbers with your advisor.

Health insurance: The deduction generally can’t be more than your net business profit, and it isn’t available for any month you were eligible for a subsidized plan through your own or your spouse’s employer.

Retirement plans: SEP-IRAs, Solo 401(k)s and SIMPLE IRAs are the most common options for owners. Each has different contribution limits and setup rules, and some have deadlines that fall before year-end. That’s why it pays to ask your advisor early, not in April.

9. Training, Courses and Professional Fees

Courses, workshops, industry memberships and professional advice (including the business portion of your tax preparation fees) can count when they relate directly to running or improving your business.

Examples: Industry courses, workshops, conferences, books and trade publications, licensing and certification fees, and fees for legal, accounting or consulting help. The key test is whether the training maintains or improves skills in your current business. Education that qualifies you for a brand-new trade or business is generally not deductible.

10. Everyday Expenses Owners Forget

These rarely feel like deductions, but together they can add up to thousands of dollars. Check your statements for:

• Advertising, business cards, signage and social media ads
• Website design, hosting and domain fees
• Legal, accounting and bookkeeping fees
• Bank, loan and merchant processing fees (including card fees from payment apps)
• Business insurance premiums
• Rent for an office, studio, storage unit or coworking space
• Office supplies, postage and shipping
• Licenses, permits and professional dues
• Interest on business loans and business credit cards
• Wages and payments to contractors
• Business travel, including airfare and lodging
• Repairs and maintenance on business equipment

Don’t Forget the Paperwork: New 1099 Threshold

This one is not a deduction, but it affects how you handle contractors. For payments made in 2026, the reporting threshold for Forms 1099-NEC and 1099-MISC rose from $600 to $2,000. Even if a form isn’t required, keep a record of every payment you make, because the expense is still deductible.

A Quick Example: What These Deductions Can Be Worth

Meet Maria, a freelance designer. In 2026 she buys a laptop, pays for software, drives to client meetings, works from a dedicated home office and takes clients to lunch.

Depending on her tax bracket and state, that could reduce her combined federal income tax and self-employment tax by roughly $3,500 to $5,500, before counting any QBI deduction. These numbers are illustrations only, and your results will depend on your own facts.

Common Mistakes That Cost Owners Money

• Mixing personal and business money. Use a separate bank account and card for the business.
• Waiting until tax season. Rebuilding receipts and mileage from memory months later is hard.
• Claiming 100% of mixed-use items. Deduct only the business portion.
• Deducting your commute. Travel from home to a regular workplace isn’t deductible.
• Missing the placed-in-service date. Equipment bought in December but not ready for use until January counts for the next year.
• Forgetting state rules. Some states don’t follow federal rules for depreciation and other deductions.

Keep Records the IRS Will Accept

A deduction you can’t prove is a deduction you can lose in an audit. For each expense, keep the receipt or invoice, proof of payment, and a short note on the business purpose. Digital copies are fine.

• Keep records for at least three years after you file, and longer for equipment, since you need the purchase records for as long as you own it.
• Save receipts to a cloud folder or expense app as you go.
• Reconcile your accounts monthly so nothing slips through.
• Download our Blank Self-Employed Expenses Datasheet to track your expenses all year.

Your Year-End Checklist

• Review your books now, not in March.
• Make equipment purchases and get them in service before December 31.
• Check your mileage log and separate trips before and after July 1.
• Gather receipts for software, subscriptions, meals and travel.
• Ask about retirement contributions and QBI before the year closes.
• Write it down even when you’re unsure. A tax professional can sort out the yes from the no later.

Frequently Asked Questions

Q1. Do I need a receipt for every expense?

Keep one for everything you can. For meals, travel and mileage, add a note on the business purpose, because a bank statement alone usually isn’t enough.

Q2. Does a credit card charge in December count for 2026?

Yes, if your business uses cash-basis accounting (most small businesses do). The expense counts in the year you charge it, even if you pay the bill in January.

Q3. I missed deductions on a past return. Can I fix it?

Often, yes. You can generally file an amended return within three years of the original filing date, or two years from the date you paid the tax, whichever is later.

Q4. Do LLC and S corporation owners get these deductions?

Most of them, yes, but how they are claimed depends on how your business is taxed. For example, S corporation owners handle the home office and health insurance differently from sole proprietors.

Q5. When should I talk to a tax professional?

Before year-end. Many of the best moves, like equipment purchases and retirement plan contributions, have deadlines that fall before December 31.