Complete LLC Tax Deductions Guide for 2026
Tax deductions reduce your LLC's taxable income, which directly lowers both your income tax and self-employment tax. Every dollar of legitimate deductions saves you approximately 25-40 cents in taxes depending on your tax bracket. This guide covers every major deduction available to LLC owners.
Key Rule: To be deductible, an expense must be "ordinary and necessary" for your trade or business (IRS Section 162). "Ordinary" means common in your industry. "Necessary" means helpful and appropriate -- not indispensable. Keep records and receipts for every deduction.
1. Home Office Deduction
If you use a dedicated space in your home regularly and exclusively for business, you can claim the home office deduction using one of two methods:
- Simplified method: $5 per square foot, up to 300 sq ft = maximum $1,500 deduction
- Regular method: Calculate the percentage of your home used for business, then apply that percentage to actual expenses (mortgage/rent, utilities, insurance, repairs, depreciation)
The space must be your principal place of business or a place where you regularly meet clients. A desk in the corner of your bedroom does not qualify unless that area is used exclusively for business.
2. Vehicle Expenses
You can deduct vehicle expenses for business use via two methods:
- Standard mileage rate: 70 cents per mile for 2026. Track business miles with a mileage log or app.
- Actual expense method: Deduct the business-use percentage of gas, oil, maintenance, insurance, registration, lease payments, and depreciation.
You must choose one method for each vehicle. Commuting from home to a regular office is not deductible, but driving from your home office to client sites is.
3. Health Insurance Premiums
- Self-employed health insurance deduction: Deduct 100% of premiums for medical, dental, and long-term care insurance for yourself, spouse, and dependents
- Above-the-line deduction: Reduces AGI on Form 1040 (no itemizing required)
- Limitation: Cannot exceed your net self-employment income
- Not available if: You are eligible for employer-sponsored health insurance through a spouse's job
4. Retirement Contributions
| Plan Type | 2026 Limit | Catch-Up (50+) | Best For |
|---|---|---|---|
| SEP IRA | 25% of net SE earnings (max $69,000) | N/A | Simple setup, high income |
| Solo 401(k) | $23,500 employee + 25% employer (max $69,000 combined) | +$7,500 | Maximum flexibility |
| SIMPLE IRA | $16,500 + 3% match | +$3,500 | LLCs with employees |
| Traditional IRA | $7,000 | +$1,000 | Supplemental savings |
5. Self-Employment Tax Deduction
You can deduct 50% of your self-employment tax as an above-the-line deduction on Form 1040. This is automatic and does not require itemizing. On $100,000 of net income, this deduction is approximately $7,065.
6. Business Insurance
- General liability insurance
- Professional liability / Errors & Omissions (E&O)
- Business property insurance
- Workers' compensation insurance
- Cyber liability insurance
- Business interruption insurance
7. Professional Services
- CPA / accountant fees for business tax preparation
- Attorney fees for business legal matters
- Bookkeeping services
- Business consulting fees
- Tax preparation software (business portion)
8. Office Expenses and Supplies
- Office supplies (paper, pens, printer ink, etc.)
- Computer equipment and peripherals
- Office furniture (may need to depreciate if over $2,500)
- Postage and shipping
- Printing and copying costs
9. Software and Technology
- Business software subscriptions (accounting, project management, CRM)
- Cloud hosting and SaaS tools
- Domain names and website hosting
- Phone and internet service (business percentage)
- Cell phone (business use percentage)
10. Marketing and Advertising
- Website design and development
- Online advertising (Google Ads, Facebook Ads, etc.)
- Print advertising and direct mail
- Business cards and promotional materials
- SEO and content marketing services
- Social media management tools
11. Travel, Meals, and Entertainment
- Business travel: Airfare, hotels, car rentals, and transportation for business trips (100% deductible)
- Business meals: 50% deductible when directly related to business discussion with a client, prospect, or business associate
- Per diem: Can use IRS per diem rates instead of tracking actual meal costs
- Entertainment: Generally not deductible since the 2017 Tax Cuts and Jobs Act
12. Education and Training
- Courses and workshops related to your current business
- Professional conferences and seminars
- Industry certifications and licensing
- Business books and subscriptions
- Online learning platforms (business-related courses)
Note: Education must maintain or improve skills in your current business. Education to qualify for a new trade or business is not deductible as a business expense (but may qualify for education credits on your personal return).
13. Depreciation and Section 179
Business assets with a useful life of more than one year must be depreciated over time, unless you elect Section 179 or bonus depreciation:
- Section 179: Deduct up to $1,250,000 of qualifying equipment and property in the year purchased (2026). Phases out when total purchases exceed $3,130,000.
- Bonus depreciation: 40% first-year depreciation for 2026 (phasing down from 100% in 2022)
- MACRS depreciation: Standard depreciation over the asset's class life (3, 5, 7, 15, or 39 years)
14. Startup Costs
- Deduct up to $5,000 in startup costs in the first year
- Phases out dollar-for-dollar when total startup costs exceed $50,000
- Remaining costs amortized over 180 months (15 years)
- Includes: market research, advertising before opening, training, travel to set up business, consulting fees
15. Rent and Utilities
- Office or retail space rent
- Coworking space membership
- Warehouse or storage unit rent
- Electricity, gas, water (for business premises)
- Internet and phone service (business portion)
16. Interest and Bank Fees
- Business loan interest
- Business credit card interest
- Business bank account fees
- Merchant processing fees (credit card processing)
- Line of credit interest
17. Qualified Business Income (QBI) Deduction
The Section 199A deduction allows eligible LLC owners to deduct up to 20% of qualified business income:
- Full deduction available: Taxable income below $191,950 (single) / $383,900 (MFJ)
- Phase-out range: $191,950-$241,950 (single) / $383,900-$483,900 (MFJ) for specified service businesses
- Specified service businesses: Health, law, accounting, consulting, athletics, financial services, performing arts
- Non-service businesses: Full deduction available at any income level (subject to W-2 wage/property limits above phase-out)
LLC Tax Deductions Checklist
| Category | Deduction | Limit / Rate |
|---|---|---|
| Home Office | Simplified or Actual | $1,500 simplified / actual % |
| Vehicle | Mileage or Actual | 70¢/mile or actual % |
| Health Insurance | Premiums | 100% of premiums |
| Retirement | SEP/Solo 401(k) | Up to $69,000 |
| SE Tax | 50% deduction | Automatic |
| Equipment | Section 179 | Up to $1,250,000 |
| Startup Costs | First-year deduction | Up to $5,000 |
| QBI | Section 199A | Up to 20% of QBI |
| Business Meals | Client meals | 50% |
| Travel | Business trips | 100% |
| Insurance | Business policies | 100% |
| Professional Fees | CPA, attorney, etc. | 100% |
| Software | Subscriptions | 100% |
| Marketing | Advertising costs | 100% |