LLC Tax Deductions: Every Expense You Can Write Off

Every dollar you deduct as a business expense reduces both your income tax and your self-employment tax. Knowing which expenses qualify and how to claim them correctly can save your LLC thousands of dollars each year.

Overview of Business Deductions

The IRS allows businesses to deduct expenses that are both ordinary and necessary for operating the business. These two terms have specific meanings:

• Ordinary: Common and accepted in your type of business. A software developer deducting a laptop is ordinary. A software developer deducting a horse trailer is not (unless they also run a horse business).
• Necessary: Helpful and appropriate for running your business. The expense does not need to be required, but it should have a clear business purpose.

Single-member LLCs report business deductions on Schedule C of Form 1040. Multi-member LLCs report deductions on Form 1065, with each member's share flowing to their personal return through Schedule K-1.

Home Office Deduction

If you use part of your home exclusively and regularly for business, you can deduct a portion of your housing costs. The IRS offers two methods.

Simplified Method

The simplified method is straightforward. You deduct $5 per square foot of your home office, up to a maximum of 300 square feet. The maximum deduction using this method is $1,500 per year. You do not need to calculate actual expenses or keep detailed records of home costs.

Actual Expenses Method (Regular Method)

The regular method lets you deduct a percentage of your actual housing costs based on the square footage of your office relative to your entire home. Deductible housing costs include:

• Rent or mortgage interest
• Property taxes
• Utilities (electricity, gas, water, internet)
• Home insurance
• Repairs and maintenance
• Depreciation (if you own the home)

For example, if your home office is 200 square feet and your total home is 2,000 square feet, you can deduct 10% of your housing costs. If your annual housing expenses total $24,000, your deduction would be $2,400.

Vehicle Expenses

If you use a vehicle for business purposes, you can deduct the business-use portion of your vehicle costs. The IRS provides two methods.

Standard Mileage Rate

For 2024, the standard mileage rate is 67 cents per mile driven for business purposes. This rate covers gas, insurance, maintenance, depreciation, and all other vehicle costs. You only need to track your business miles.

To use this method, you must have used it in the first year the vehicle was available for business. You cannot switch from actual expenses to standard mileage for the same vehicle (though you can switch from standard mileage to actual expenses).

Actual Expenses Method

Track all vehicle-related costs for the year, then multiply by your business-use percentage. Deductible costs include:

• Gas and oil
• Insurance premiums
• Repairs and maintenance
• Tires
• Registration fees
• Lease payments (if leasing)
• Depreciation (if you own the vehicle)

For both methods, you must keep a mileage log. Record the date, destination, business purpose, and miles driven for every business trip. The IRS frequently audits vehicle deductions, and a detailed log is your best defense.

Business Travel

When you travel away from your "tax home" (your regular place of business) for business purposes, you can deduct travel expenses. The trip must be primarily for business, though you can mix some personal time without losing the deduction entirely.

Deductible Travel Expenses

• Airfare, train, or bus tickets: 100% deductible for business travel
• Hotels and lodging: 100% deductible for nights you need to stay for business
• Meals: 50% deductible (the IRS limits meal deductions to half the cost)
• Rental cars and rideshares: 100% deductible when used for business transportation
• Tips: Deductible for business-related services (hotel staff, restaurant servers)
• Baggage fees: 100% deductible
• Conference registration fees: 100% deductible

Rules for Mixed Business and Personal Travel

If a trip is primarily for business, you can deduct the airfare and business-related expenses in full. Personal expenses (extra hotel nights for sightseeing, personal meals) are not deductible. If a trip is primarily personal with some business activity, you cannot deduct the airfare or transportation costs.

For domestic travel, "primarily for business" means more than half of the days on the trip are business days. For international travel, stricter rules apply if the trip exceeds 7 days and more than 25% of the time is personal.

Equipment and Supplies

Business equipment, furniture, and supplies are deductible. How you deduct them depends on the cost and expected lifespan of the item.

Section 179 Deduction

Section 179 allows you to deduct the full purchase price of qualifying equipment in the year you buy it, rather than depreciating it over several years. For 2024, the maximum Section 179 deduction is $1,220,000.

Qualifying items include:

• Computers and laptops
• Office furniture (desks, chairs, shelving)
• Machinery and equipment
• Business vehicles (with limits for passenger vehicles)
• Certain software

Bonus Depreciation

For assets that do not qualify for Section 179, or if you exceed the Section 179 limit, bonus depreciation allows you to deduct a percentage of the asset's cost in the first year. For 2024, the bonus depreciation rate is 60% (it has been phasing down from 100% in 2022).

Regular Supplies

Everyday business supplies are fully deductible in the year purchased:

• Office supplies (paper, pens, printer ink)
• Postage and shipping materials
• Cleaning supplies for your office
• Printer and scanner consumables

Software and Subscriptions

SaaS tools, subscriptions, and digital services used for your business are fully deductible in the year you pay for them.

Common Deductible Software

• Productivity: Microsoft 365, Google Workspace, Notion
• Accounting: QuickBooks, FreshBooks, Xero
• Communication: Slack, Zoom, phone service
• Design: Adobe Creative Cloud, Figma, Canva
• Project management: Asana, Monday.com, Trello
• Website: Hosting, domain names, CDN services, email marketing tools
• Development: GitHub, cloud computing (AWS, Google Cloud), IDE licenses
• Security: VPN services, antivirus software, password managers

If a subscription is used for both personal and business purposes (such as a phone plan), deduct only the business-use percentage.

Professional Services

Fees paid to professionals who help run your business are fully deductible.

Deductible Professional Fees

• Accounting and bookkeeping: CPA fees, tax preparation, bookkeeping services
• Legal services: Contract review, business formation, trademark registration
• LLC formation fees: State filing fees, registered agent services, formation service fees
• Consulting: Business consultants, marketing strategists, financial advisors
• Freelancers and contractors: Payments to independent contractors who perform work for your business (remember to issue 1099-NEC forms for payments of $600 or more)

Health Insurance Deduction

Self-employed LLC owners can deduct 100% of health insurance premiums paid for themselves, their spouse, and their dependents. This is an above-the-line deduction, meaning it reduces your adjusted gross income (AGI) directly.

Requirements

• The insurance plan must be established under your business name, or you must be the policyholder
• You cannot be eligible for employer-sponsored health insurance through a spouse's job or another employer
• The deduction cannot exceed your net self-employment income from the business

What Qualifies

• Medical insurance premiums
• Dental insurance premiums
• Vision insurance premiums
• Long-term care insurance premiums (with age-based limits)
• Medicare Part B and Part D premiums (if you are self-employed and pay these yourself)

This deduction is reported on Schedule 1 of Form 1040 (line 17). It is not reported on Schedule C. The deduction reduces your income tax but does not reduce your self-employment tax.

Retirement Contributions

Contributions to qualified retirement plans are deductible and reduce your taxable income. Two retirement plan types are especially suited for LLC owners.

SEP IRA (Simplified Employee Pension)

• Contribution limit: Up to 25% of net self-employment earnings
• 2024 maximum: $69,000
• Setup deadline: Can be established and funded up to the tax filing deadline (April 15, or October 15 with extension)
• Best for: LLC owners who want a simple, high-limit retirement account with no annual administration

Solo 401(k)

• Employee deferral: Up to $23,000 (2024), plus $7,500 catch-up if age 50+
• Employer contribution: Up to 25% of net self-employment earnings
• 2024 combined maximum: $69,000 ($76,500 with catch-up)
• Setup deadline: Must be established by December 31 of the tax year (contributions can be made until the filing deadline)
• Best for: LLC owners who want to maximize retirement savings, especially those under 50 who want the higher employee deferral option

Other Deductions

Education and Professional Development

Courses, workshops, conferences, books, and training related to your current business are deductible. The education must maintain or improve skills required in your current trade. Education that qualifies you for a new career or meets minimum requirements for a new field is not deductible.

Marketing and Advertising

• Online advertising (Google Ads, social media ads)
• Website design and development
• Business cards and printed materials
• Sponsorships and promotional events
• SEO services and content creation

Insurance Premiums

• General liability insurance: Protects against third-party claims
• Professional liability (E&O) insurance: Covers errors in professional services
• Cyber liability insurance: Covers data breaches and cyber incidents
• Business property insurance: Covers business equipment and inventory

Interest on Business Loans

Interest paid on loans used for business purposes is deductible. This includes business credit card interest, SBA loans, business lines of credit, and equipment financing. Personal loan interest is not deductible, even if you use the funds for business.

Bank Fees and Payment Processing

• Business bank account monthly fees
• Credit card processing fees (Stripe, Square, PayPal)
• Wire transfer fees
• Check ordering costs

Rent and Coworking

Rent paid for office space, coworking memberships, and commercial leases is fully deductible. If you rent office space, you can deduct the full rent amount. If you use a coworking space part-time, the membership fee is deductible. Virtual office fees are also deductible.

Frequently Asked Questions