Written by Behdad Karimi Dermeni, CPA · Reviewed by Maryam Ajorloo, CPA
You started consulting to do the work you're actually good at, not to become an amateur bookkeeper on the side. Then the first tax season arrived, and with it the nagging feeling that you're either missing deductions or claiming things you shouldn't. This guide clears that up. Below are the tax write-offs for consultants that the IRS actually allows, the ones independent consultants most often leave on the table, and a simple way to capture all of them without a shoebox of receipts.
The short answer: As an independent consultant, you can write off almost any expense that is ordinary and necessary for your consulting work, from your home office and mileage to software, professional development, and a big chunk of your own health insurance and retirement savings.
Keeping track of all this is the hard part, not knowing the rules. Connect your accounts and let an AI Bookkeeper sort your expenses so the write-offs are already organized when it's time to file.
The one rule behind every consultant write-off
Before the list, learn the rule, because it answers most of the questions you'll ever have. The IRS lets you deduct expenses that are "ordinary and necessary" for your business, a phrase that comes straight from the tax code the IRS uses to define deductible business expenses (Section 162). Ordinary means it's common and accepted for a consultant to spend on. Necessary means it's helpful and appropriate for the work you do.
That's it. If a cost is ordinary for your line of consulting and it helped you earn income, it's very likely a write-off. A management consultant's flight to a client's office is ordinary and necessary. A management consultant's flight to Cancun for a personal vacation is neither, no matter how many emails you answer on the beach.
Two things to keep in mind as you read the list:
A write-off lowers your taxable income, not your tax bill dollar-for-dollar. If you're in the 24% bracket, a $1,000 deduction saves you roughly $240, plus self-employment tax.
Mixed-use expenses only count for the business portion. If your cell phone is 60% business, you deduct 60%.
The write-offs almost every consultant can claim
Most consultants share the same cost structure: a laptop, a home office, some travel, a stack of subscriptions, and the occasional client lunch. Here are the categories that show up on nearly every consultant's Schedule C.
Home office. If you use part of your home regularly and exclusively for consulting, you can deduct it. The simplified IRS method is $5 per square foot, up to 300 square feet, for a maximum of $1,500. The regular method deducts the actual business percentage of your rent, utilities, and insurance. This one survives even if you also work at client sites, as long as your home is your principal place of business.
Business mileage and vehicle costs. Driving to a client, to a meeting, or on a work errand is deductible. The 2026 standard mileage rate is 72.5 cents per mile for the first half of the year, rising to 76 cents for the second half. Commuting from home to a regular workplace does not count.
Business travel. Out-of-town client engagements and conferences are deductible: airfare, hotels, rental cars, and ride shares. A consultant flying to a three-day client workshop can write off the flight and the room in full.
Software, subscriptions, and tech. Your project management tool, video calls, cloud storage, CRM, design apps, and yes, LinkedIn Premium, are all deductible if you use them for the business.
Professional development and certifications. Courses, coaching, industry conferences, books, and certification renewals (a PMP, a Salesforce cert, a coaching credential) count when they maintain or improve skills for your current consulting work.
Marketing and business development. Your website, hosting, portfolio, business cards, and paid ads to land clients are all write-offs. So is the designer you hired to build your personal brand.
Business insurance. Professional liability (errors and omissions) coverage is close to mandatory for many consultants, and the premiums are fully deductible. General liability and cyber insurance count too.
Meals. A meal with a client or a prospect is 50% deductible in 2026. Keep it reasonable and note who you met and why. (Entertainment, like concert or game tickets, is not deductible, so the client lunch stays, the client suite does not.)
Office supplies and equipment. Laptops, monitors, a desk, a decent chair, notebooks, and the printer you use twice a year all qualify.
Subcontractors and contract help. If you bring in another freelancer to help deliver a project, what you pay them is deductible. Pay any contractor $600 or more in a year and you'll issue them a Form 1099-NEC.
Phone and internet. Deduct the business-use percentage of your cell phone and home internet. Be honest about the split.
Bank and payment fees. Merchant processing fees, business bank account fees, and invoicing software fees are all deductible costs of getting paid.
This is exactly the kind of tracking an AI Bookkeeper handles automatically: it categorizes each of these as the transactions come in, so your write-offs are sorted long before April.
The big write-offs consultants overlook
The categories above are the ones people remember. These are the ones that actually move your tax bill, and independent consultants miss them constantly because they're claimed on your personal return, not buried in your business expenses.
Self-employed health insurance. If you pay for your own health, dental, or qualifying long-term care insurance and aren't eligible for a spouse's employer plan, you can deduct the premiums directly against your income. For a solo consultant, this is often one of the largest single deductions of the year.
Retirement contributions. A SEP-IRA or Solo 401(k) lets you contribute far more than a regular IRA, and the contribution reduces your taxable income now. It's the rare write-off that also pays you back later.
Half of your self-employment tax. Consultants pay 15.3% self-employment tax on net earnings (Social Security and Medicare). The good news: you deduct the employer-equivalent half, automatically, on your return.
The Qualified Business Income (QBI) deduction. Most consultants can deduct up to 20% of their qualified business income on top of their regular expenses. It was made permanent starting in 2026, though it phases out at higher incomes for consulting and other service businesses.
Equipment, expensed in year one. Instead of depreciating a big purchase over several years, Section 179 and 100% bonus depreciation let you write off the full cost the year you buy it. For 2026, Section 179 covers up to $2.56 million of equipment, which is not a limit most solo consultants will trouble.
Startup costs. If you launched your practice recently, you can deduct up to $5,000 of startup costs (research, initial marketing, setup) in your first year.
One thing we hear often from consultants: "I paid for a bunch of business stuff on my personal card before I opened a business account, did I lose those deductions?" You didn't. An expense is deductible based on what it was for, not which card touched it. As long as it was ordinary and necessary for the business and you have a record of it, it counts. The fix going forward is simpler bookkeeping, which we'll get to.
What you can't write off
The rules are generous, but not unlimited. These are the ones that get consultants in trouble:
Personal expenses. Your gym membership, your regular haircut, your personal Netflix. If it isn't for the business, it isn't a write-off.
Commuting. Driving from home to a regular work location is personal, even though it feels like work.
Everyday clothing. A suit you could wear anywhere is not deductible, even if you only ever wear it to client meetings.
The personal slice of mixed use. The business-use percentage of your phone or car is deductible. The rest isn't.
When in doubt, go back to the rule: ordinary, necessary, and tied to earning consulting income. If a deduction can't clear that bar, leave it off.
Where consultants actually claim these deductions
How you file depends on your business structure. Most independent consultants are sole proprietors or single-member LLCs, which means your business income and write-offs go on Schedule C, filed with your personal Form 1040. If you've elected S-corporation status, your business files Form 1120-S and pays you a reasonable salary on a W-2, with expenses claimed on the corporate return.
The write-offs themselves are largely the same either way. If you want the full breakdown of how deductions work across business structures, our guide to small business tax deductions covers where each one lands. This consultant guide focuses on which expenses you, specifically, are likely to have.
How to capture every write-off (without the shoebox)
Here's the part nobody tells you: most missed deductions aren't missed because you didn't know the rule. They're missed because the receipt vanished, the expense was buried in a personal account, or nothing got categorized until the night before the deadline. Turns out "I'll deal with it in April" is not a bookkeeping strategy.
Fix the system once and the write-offs take care of themselves:
Separate business and personal. Open a dedicated business checking account and card, and run every business expense through it. This single move makes almost every deduction on this list easy to prove.
Connect your accounts. Link your bank and card so transactions import automatically instead of living in a spreadsheet you update twice a year.
Save every receipt as it happens. Snap or forward each receipt into a digital inbox the moment you get it. Smart Shoebox (your receipt inbox) stores them and matches them to the right transaction.
Categorize as you go. Let an AI Bookkeeper sort each transaction into the right category throughout the year, so your books are already tax-ready when you file.
This is exactly what ReInvestWealth was built to do. See how the AI Bookkeeper works and let it do the categorizing for you.
A few habits that keep it clean
Log the "who and why" on client meals and travel. A one-line note now saves you a guessing game later.
Do a 10-minute review each month, not a 10-hour scramble each April. If you've fallen behind, here's how to catch up on months of bookkeeping without losing your mind.
Keep records for at least three years after filing, the standard window the IRS can ask you to back up a deduction.
Consultants who keep clean books don't just claim more write-offs. They spend less on their accountant, because clean books are faster to work with, and they walk into tax season without the usual dread. ReInvestWealth is rated 4.8 on Capterra by business owners doing exactly that.
Frequently asked questions
What can consultants write off on their taxes?
Consultants can write off any expense that is ordinary and necessary for their work: home office, business mileage, travel, software and subscriptions, professional development, marketing, business insurance, 50% of client meals, equipment, subcontractors, and a share of phone and internet. Self-employed health insurance, retirement contributions, and the QBI deduction are claimed on your personal return.
Can I deduct my home office if I also work at client sites?
Yes. As long as you use part of your home regularly and exclusively for your consulting business and it's your principal place of business (where you handle admin, scheduling, and management), you can claim the home office deduction even when much of the actual work happens at client locations.
Are business meals with clients deductible in 2026?
Yes, but only 50% of the cost. Keep the meal reasonable and note who you met with and the business purpose. Entertainment expenses, like event or game tickets, are not deductible.
Can I write off professional certifications and courses?
Yes, when they maintain or improve skills for your current consulting work. A certification renewal, an industry course, or coaching to sharpen your existing services qualifies. Education that trains you for a completely new career generally does not.
Do I need receipts for every consultant write-off?
You need records that support each deduction, and receipts are the cleanest form. A digital receipt inbox matched to your bank transactions gives you an audit-ready trail without keeping paper. Keep records for at least three years after filing.
Connect your bank account and let the AI categorize your transactions. CPA-level clean books, no shoebox, and every write-off accounted for. Start free for 30 days.
A note from our CPAs: This guide is educational and covers the general rules for independent consultants in the United States. Tax situations vary, so for advice on your specific circumstances, talk to your accountant. (If they use ReInvestWealth, they'll already have clean books to work from.)
Written by Behdad Karimi Dermeni, CPA
> Co-founder of ReInvestWealth and a founding community builder at Stripe. Behdad built ReInvestWealth to give smart, busy entrepreneurs CPA-level accounting without the CPA-level price tag. Read more · Connect on LinkedIn
Reviewed by Maryam Ajorloo, CPA
> Maryam Ajorloo is the co-founder of ReInvestWealth and a CPA who specializes in small business tax, deductions, and everyday bookkeeping. She helps entrepreneurs keep clean, audit-ready books and make sense of write-offs, filing deadlines, and the numbers behind their business. Read more · Connect on LinkedIn
