
Business Expense Categories 2026: Complete IRS Guide for Small Businesses
Every IRS business expense category explained for 2026: Schedule C lines, what qualifies, record-keeping rules, and real examples for each category.

An LLC can deduct any expense that is ordinary and necessary for the business under IRC §162: home office, vehicle mileage, health insurance, retirement contributions, software, and 15 more categories below. There is no separate "LLC tax rate." A single-member LLC reports these write-offs on Schedule C, and each dollar of legitimate expense lowers both income tax and the 15.3% self-employment tax. The average small-business owner leaves $3,000 to $5,000 in deductions unclaimed, almost always because small recurring expenses go untracked.
Key takeaways:
The IRS rule: You can deduct any expense that is "ordinary and necessary" for your business under IRC §162. "Ordinary" means common in your industry. "Necessary" means helpful and appropriate (not indispensable).
Top deductions by dollar value:
| Deduction | Potential Annual Value | IRS Reference |
|---|---|---|
| Self-employed health insurance | $5,000-$30,000 | IRC §162(l) |
| Retirement contributions | Up to $72,000 | IRC §404 |
| Home office | $1,500-$5,000+ | IRC §280A |
| Vehicle/mileage | $2,000-$15,000 | IRC §162, §274 |
| Section 179 equipment | Up to $2,560,000 | IRC §179 |
| QBI deduction (20%) | Varies by income | IRC §199A |
Tax savings example ($100,000 net revenue): With $35,000 in total deductions, net profit drops from $100,000 to $65,000. Combined federal tax falls from roughly $26,800 to about $16,400, a $10,400 saving. (Figures include income tax and self-employment tax and vary by filing status.)
Legal basis: IRC §162 (business expenses) and IRS Publication 334 (Tax Guide for Small Business). The IRS discontinued Publication 535 after 2022 and moved its business-expense guidance into Publication 334 and the IRS Guide to Business Expense Resources.

If you use a dedicated space in your home regularly and exclusively for business, you can deduct home office expenses.
Two methods:
Example (regular method). A 200 sq ft office in a 1,500 sq ft home is 13.3% business use.
| Annual home expense | Amount |
|---|---|
| Mortgage interest | $18,000 |
| Utilities | $3,600 |
| Insurance | $1,800 |
| Repairs | $1,200 |
| Total | $24,600 |
Deduction: $24,600 × 13.3% = $3,272.
For detailed calculations, see our home office deduction guide.
Legal citation: IRC §280A and IRS Publication 587
Deduct the business use of your vehicle using one of two methods:
At the standard rate, 15,000 business miles × $0.725 = a $10,875 deduction. Keep a mileage log with the date, destination, purpose, and miles for each trip. The business vehicle deduction guide compares the two methods in detail.
Legal citation: IRC §162 and §274(d); IRS Notice 2026-10 sets the 2026 mileage rate.
All supplies used for business operations: paper, ink, pens, cleaning supplies, postage, shipping materials.
For equipment over $2,500: use Section 179 expensing (see #16 below) or depreciate.
Legal citation: IRC §162(a) — Ordinary and necessary business expenses
Monthly or annual subscriptions for business software:
Deduction: 100% of cost if used entirely for business. If mixed personal/business use, deduct only the business percentage.
Deduct the business-use percentage of your phone plan and home internet.
A $100/month phone at 70% business use is $70/month, or $840/year. An $80/month internet plan at 50% business use is $40/month, or $480/year. Combined: $1,320/year.
Keep records: Log business vs. personal usage to support your percentage.
Fully deductible insurance premiums include:
Legal citation: IRC §162(a) — Insurance as ordinary business expense
Deduct 100% of health, dental, and vision insurance premiums for yourself, your spouse, and dependents. This is an "above the line" deduction that reduces AGI.
Requirements:
For a complete breakdown, see our health insurance deduction guide.
Legal citation: IRC §162(l)
LLC owners have access to powerful tax-deferred retirement accounts:
| Plan | 2026 Maximum | Best For |
|---|---|---|
| SEP IRA | 25% of net earnings (up to $72,000) | Simple administration |
| Solo 401(k) | $24,500 employee + 25% employer match | Maximum contribution |
| SIMPLE IRA | $17,000 + employer match | LLCs with employees |
| Traditional IRA | $7,500 ($8,600 if 50+) | Supplemental savings |
Example, $100,000 net profit in a Solo 401(k): $24,500 employee contribution plus a $25,000 employer contribution (25% of net) is a $49,500 deduction, worth about $11,880 in tax at a 24% bracket.
See our retirement plan deductions guide.
Legal citation: IRC §404 (employer contributions), IRC §402(g) (employee deferrals)
Payments to independent contractors are fully deductible. Starting with 2026 payments, you must issue Form 1099-NEC to any contractor you pay $2,000 or more during the year; the OBBBA raised the reporting threshold from $600.
Legal citation: IRC §162(a) — Compensation for services
If your LLC has employees, deduct:
Legal citation: IRC §162(a)(1) — Employee compensation
Note: The cost of preparing the business portion of your tax return is deductible. Personal tax preparation is not.
Business-related legal expenses:
Not deductible: Legal fees for personal matters or acquiring business assets (these are capitalized, not deducted).
Legal citation: IRC §162 (deductible legal fees) vs. IRC §263 (capitalized fees)
Rule: The education must maintain or improve skills for your current business. Courses to qualify for a new career are not deductible.
Legal citation: Treas. Reg. §1.162-5
All advertising costs to promote your business are 100% deductible in the year incurred.
Deduct 50% of meal costs when:
A $120 client lunch is 50% deductible, so you write off $60.
Documentation required: Date, location, attendees, business purpose, and amount. Keep the receipt.
Legal citation: IRC §274(k) limits meal deductions to 50%
Immediately deduct the full cost of qualifying business assets instead of depreciating them over time.
2026 limits:
Qualifying assets:
See our Section 179 depreciation guide.
Legal citation: IRC §179
If you launched your LLC in 2026:
Startup costs include: market research, training, advertising before opening, and travel to set up the business.
Legal citation: IRC §195
Deduct 100% of travel expenses when away from your "tax home" overnight for business:
The trip must be primarily for business. If you add personal days to a business trip, only the business-related expenses are deductible.
Legal citation: IRC §162(a)(2) and IRS Publication 463
Business-related parking fees and tolls are deductible even if you use the standard mileage rate for vehicle expenses. These are separate deductions.
Not deductible: Commuting costs from home to your regular office.
Limitation: The business interest deduction under IRC §163(j) is limited to 30% of adjusted taxable income for businesses with average annual gross receipts over $30 million. This rarely affects small LLCs.
Legal citation: IRC §163 (interest deduction)
Not everything is deductible. For the full categorized list of what is deductible, see the business expense categories guide. Common items that LLC owners try to write off but shouldn't:
❌ Personal expenses: groceries, personal clothing, personal entertainment
❌ Commuting costs: driving from home to a regular office (a home office changes this)
❌ Political contributions: donations to campaigns or PACs
❌ Fines and penalties: traffic tickets, IRS penalties, legal fines
❌ Clothing: unless it's a uniform or protective gear required for work (a suit doesn't count)
❌ Personal portion of mixed expenses: only the business percentage of phone, internet, vehicle, and similar
❌ Capital expenses: generally must be depreciated, not deducted (unless Section 179 applies)
Problem: LLC owners track big purchases but ignore $10-$50 expenses throughout the year.
Impact: Those small expenses add up to $2,000-$5,000 annually in missed deductions — $500-$1,200 in tax savings gone.
Solution: Connect your business bank account to accounting software or use Jupid's AI categorization to capture every transaction automatically.
Problem: LLC owners who work from home don't claim the home office deduction because they think it triggers audits.
Impact: Missing $1,500-$5,000+ per year in deductions.
Solution: If you have a dedicated workspace used regularly and exclusively for business, claim it. The simplified method ($5/sq ft) is easy to calculate and defend.
Problem: Taking the deduction without recording who attended, the business purpose, or keeping receipts.
Impact: Deductions disallowed during an audit, plus potential penalties.
Solution: Record the business purpose immediately after each meal or trip. Use your phone to photograph receipts. Note: "Client meeting with [name] to discuss [project]" is sufficient.
Problem: Writing off personal meals, entertainment, clothing, or vacations as business expenses.
Impact: Audit triggers, disallowed deductions, accuracy penalties (20% of underpayment), and potential fraud charges for egregious cases.
Solution: Be honest. If an expense has both personal and business elements, deduct only the clearly documented business portion.
The hard part of LLC deductions is not knowing they exist; it is categorizing every transaction before you forget. Jupid is an AI accountant that connects to your business bank account and automatically categorizes each charge with 95.9% accuracy, matching it to the right Schedule C line. Ask "what are my total deductions this quarter?" over WhatsApp or iMessage and get a real-time answer from your own numbers instead of scrolling through statements. Every categorized transaction is one more write-off that lands on your return instead of being missed.
| Item | 2026 Amount |
|---|---|
| Standard mileage rate | 72.5 cents/mile |
| Section 179 maximum | $2,560,000 |
| Bonus depreciation | 100% |
| Meal deduction | 50% |
| Home office (simplified) | $5/sq ft (max $1,500) |
| Startup cost deduction | Up to $5,000 |
| SEP IRA max | $72,000 |
| Solo 401(k) employee limit | $24,500 ($32,500 if 50+) |
LLC tax write-offs aren't complicated — there are 20 categories that cover the vast majority of deductible business expenses. The challenge is tracking them consistently.
The key strategies:
Every dollar of legitimate business expense you track is a dollar less of taxable income. At a 30% combined tax rate, $10,000 in missed deductions costs you $3,000 in unnecessary taxes.
Disclaimer
This article provides general information about LLC tax deductions and should not be considered tax advice. Deduction eligibility depends on your specific business activities, industry, and circumstances. Dollar amounts and limits are based on 2026 tax law and are subject to change. The IRS requires that all deductions be "ordinary and necessary" for your specific trade or business. For advice specific to your situation, consult with a qualified tax professional.
Tax Year: 2026 Last Updated: July 7, 2026

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