As an independent consultant, you can deduct the ordinary and necessary costs of running your business, and the list of consulting tax deductions is broad: software and subscriptions, professional insurance, a home office, business travel and mileage, equipment, health insurance premiums, retirement plan contributions, half of your self-employment tax, and up to 20% of your qualified business income.1Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses These deductions reduce both your income tax and, in most cases, your self-employment tax, so each dollar you track is worth more than a dollar of W-2 withholding would be.
Whether you file as a sole proprietor, single-member LLC, partnership, or S corporation, the deductions themselves are largely the same. What changes is the form they land on. Most consultants report on Schedule C with their personal return.2Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss from Business (Sole Proprietorship)
The Deductions That Move the Needle
Three write-offs tend to produce the largest tax savings for consultants, and they sit outside Schedule C.
Half of Your Self-Employment Tax
Self-employment tax covers both halves of Social Security and Medicare, for a combined rate of 15.3% (12.4% for Social Security on earnings up to $184,500 in 2026, plus 2.9% for Medicare on all earnings).3Internal Revenue Service. 2026 Publication 15-A4Social Security Administration. Contribution and Benefit Base It applies to 92.35% of your net self-employment earnings.5Internal Revenue Service. Schedule SE (Form 1040) You can deduct half of what you pay as an adjustment to gross income, whether or not you itemize.6Internal Revenue Service. Topic No. 554, Self-Employment Tax For a consultant with $150,000 in net profit, that works out to roughly a $10,600 deduction.
Qualified Business Income (QBI)
The Section 199A QBI deduction lets eligible self-employed individuals deduct up to 20% of their qualified business income on their personal return. It’s layered on top of your other business deductions and doesn’t reduce self-employment tax.
Consulting is classified as a “specified service trade or business,” so the deduction phases out at higher incomes and disappears above a threshold.7eCFR. 26 CFR 1.199A-5 – Specified Service Trades or Businesses and the Trade or Business of Performing Services as an Employee For 2026, the phase-out begins at roughly $200,000 for single filers and approximately $400,000 for married filing jointly, with the figures adjusting annually. If your taxable income is below the threshold, you get the full 20% with no further calculation. Above the phase-out range, consultants lose the deduction entirely. A consultant with $120,000 in qualified business income could deduct $24,000.
Retirement Plan Contributions
Retirement contributions are both a deduction and actual savings. Two plans dominate.
A SEP IRA lets you contribute up to 25% of your net self-employment earnings, capped at $72,000 in 2026.8Internal Revenue Service. SEP Contribution Limits (Including Grandfathered SARSEPs) Setup is simple and contributions are fully deductible, but everything you put in is treated as an employer contribution, so there’s no additional employee deferral.
A solo 401(k) is available if you have no employees other than a spouse. You can defer up to $24,500 as the employee portion in 2026, then add employer profit-sharing contributions of up to 25% of net earnings, for a combined maximum of $72,000. At age 50 or older, an $8,000 catch-up contribution raises the ceiling to $80,000. The solo 401(k) also allows Roth contributions; a SEP IRA does not.
Everyday Operating Expenses
Any cost that is ordinary (common in consulting) and necessary (helpful and appropriate for your work) qualifies as a deductible business expense.1Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses For a consulting practice, that covers most of what you spend to keep the business running.
- Professional services: accountant fees for tax prep, bookkeeping, or financial planning, and legal fees for contracts, formation, or disputes. If an attorney’s invoice mixes business and personal matters, only the business portion qualifies.
- Business insurance: general liability, professional liability (errors and omissions), and cyber coverage are fully deductible.
- Licensing and annual state registration fees to keep your entity in good standing.
- Continuing education that maintains or improves skills you already use, including webinars, conferences, certifications, and industry publications. Education that qualifies you for an entirely new profession does not qualify, even if it relates to your current field.
- Office supplies, postage, software subscriptions (project management, cloud storage, industry platforms), and marketing costs such as website hosting, paid ads, and print materials.
- Subcontractors you hire to help on client work. Issue a 1099 for payments of $600 or more.
Home Office
If you work from home, the home office deduction can cover a meaningful share of your housing costs. To qualify, you must use a dedicated area of your home exclusively and regularly as your principal place of business.9Internal Revenue Service. Publication 587, Business Use of Your Home “Exclusive” means no personal activity happens in that space. A spare bedroom used only for client work qualifies; a dining table where your family also eats does not. A home office also qualifies if you use it exclusively and regularly to meet clients, even when you have another work location.
You have two ways to calculate the deduction. The simplified method pays $5 per square foot of office space, capped at 300 square feet, for a maximum of $1,500 a year.10Internal Revenue Service. FAQs – Simplified Method for Home Office Deduction No depreciation, no utility bills to track.
The actual expense method usually produces a larger deduction but requires more record-keeping. Divide the square footage of your office by the total square footage of your home to get a business-use percentage, then apply that percentage to rent or mortgage interest, property taxes, homeowner’s insurance, utilities, repairs, and depreciation.11Internal Revenue Service. Simplified Option for Home Office Deduction A 200-square-foot office in a 2,000-square-foot house gives you a 10% deduction against all those costs.
Internet and phone are separate from the home office calculation. A dedicated business phone line is fully deductible. For a personal phone or internet connection you also use for work, deduct the business-use percentage. The IRS does not expect minute-by-minute tracking, but claiming 100% of a line you also use personally will not survive an audit.
Vehicle and Travel
Business travel is deductible when you travel away from your tax home (generally your principal place of business) long enough to need sleep or rest.1Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses Deductible costs include airfare, lodging, rental cars, taxis, rideshares, and incidentals like tips and baggage fees. On a mixed business-personal trip, only costs tied to the business portion are deductible. Full airfare still counts if the primary purpose was business, but personal-day hotel nights and meals do not.
When you use a personal vehicle for business, you pick one of two methods. The standard mileage rate for 2026 is 72.5 cents per mile, multiplied by your business miles for the year.12Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents Per Mile The actual expense method tracks gas, insurance, maintenance, depreciation, and registration, then deducts the business-use percentage.
Either way, you need a mileage log showing date, starting point, destination, and business purpose for every trip. Commuting between your home and a regular office does not count.
Meals, and the Entertainment Boundary
Business meals are 50% deductible when the meal has a clear business purpose and you or an employee are present.13Office of the Law Revision Counsel. 26 USC 274 – Disallowance of Certain Entertainment, Etc., Expenses That covers eating with a client to discuss a project or grabbing lunch alone while traveling for work. The meal cannot be lavish or extravagant.14Internal Revenue Service. Income and Expenses 2
Entertainment is a different story and worth knowing because the old rules used to allow it. Tickets to sporting events, concerts, golf outings, and similar activities are completely nondeductible, even when the entertainment is directly tied to business discussions.13Office of the Law Revision Counsel. 26 USC 274 – Disallowance of Certain Entertainment, Etc., Expenses Club dues for social, athletic, or sporting organizations are also out. The one carve-out: food and beverages purchased at an entertainment event can still be 50% deductible if the invoice or receipt separates the food from the entertainment charge. You cannot estimate the food portion after the fact.
Equipment and Technology
Laptops, monitors, printers, office furniture, and specialized equipment are deductible. Technically, items with a useful life beyond one year must be capitalized and depreciated over time, but two faster options mean most consultants never deal with multi-year depreciation.
Section 179 lets you deduct the entire cost of qualifying equipment in the year you buy it.15Internal Revenue Service. Publication 946 – How To Depreciate Property The 2026 deduction limit is $2,560,000, with a phase-out starting when total equipment purchases exceed $4,090,000. Those limits are built for much larger businesses, so most consultants can expense every purchase in full. Section 179 covers tangible personal property like computers, office furniture, and vehicles, along with certain software.
Bonus depreciation provides a 100% first-year deduction for qualified property acquired after January 19, 2025, under legislation signed in 2025.16Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One Big Beautiful Bill Bonus depreciation had been phasing down and was set to reach only 20% in 2026 before the law changed; the restored 100% rate is now permanent. For most equipment purchases, Section 179 and bonus depreciation produce the same result, but bonus depreciation can also apply to used property and avoids the taxable-income limitation that Section 179 carries.
Self-Employed Health Insurance
You can deduct premiums for medical, dental, and vision coverage for yourself, your spouse, and your dependents, along with qualified long-term care premiums. This is an adjustment to income on Schedule 1 of Form 1040, calculated using Form 7206, not a Schedule C expense.17Internal Revenue Service. Instructions for Form 7206 – Self-Employed Health Insurance Deduction
One eligibility rule trips people up: you cannot claim the deduction for any month in which you were eligible to participate in an employer-subsidized health plan, including through a spouse’s employer.18Internal Revenue Service. Form 7206 – Self-Employed Health Insurance Deduction “Eligible” is the key word. Even if you declined the coverage, the availability disqualifies you for that period. The deduction also cannot exceed the net self-employment income of the business under which the plan is established.
Startup Costs if You Just Launched
If you recently started your consulting practice, you can deduct up to $5,000 of startup costs in the year the business begins.19eCFR. 26 CFR 1.195-1 – Election to Amortize Start-Up Expenditures Startup costs include market research, pre-opening advertising, travel to find clients, and training before you begin operating. A separate $5,000 is available for organizational costs, such as filing fees and legal costs to form an LLC or corporation.
Both deductions phase out dollar-for-dollar once costs in that category exceed $50,000. If your startup costs reach $55,000, the immediate deduction disappears entirely. Anything you cannot deduct right away must be amortized over 180 months, beginning in the month you start the business.
Proving Your Deductions
A deduction you cannot prove is a deduction you lose. The IRS requires enough documentation to establish what the expense was, when it occurred, where, and the business purpose. For meals and travel, keep receipts and note the business relationship of anyone involved. A credit card statement by itself is usually not enough without the underlying itemized receipt.
Mileage logs draw particular scrutiny. Each entry should record the date, starting location, destination, business purpose, and miles driven. Reconstructing a year from memory in April rarely holds up.
A few habits take care of most of the record-keeping problem. Use a dedicated business bank account and credit card so transactions separate themselves automatically. Use accounting software or an expense app to categorize as you go. Photograph paper receipts right away, since thermal paper fades within months.
The cost of getting records wrong is real. The IRS imposes a 20% accuracy-related penalty on any underpayment resulting from negligence or disregard of the rules. A substantial understatement, defined as the greater of 10% of the correct tax or $5,000, triggers the same 20% penalty. For consultants claiming the QBI deduction, the substantial understatement threshold drops to 5% of the correct tax or $5,000.20Internal Revenue Service. Accuracy-Related Penalty Good records are what let you claim everything you’re entitled to and defend it if the IRS asks.