Every February brings some version of the same conversation. A therapist sends over a return prepared somewhere else, and the practice's expense list runs to rent, an EHR subscription and a line called "supplies." The missing deductions were never disallowed. They were never claimed, because nobody sat down and asked what the year had actually looked like.

What follows is the list I work through with practice owners. None of it is aggressive. All of it turns on details, the specific rule, and the specific record that makes the rule stick.

The test every deduction has to pass

Business deductions come from one sentence in the tax code: an expense is deductible if it is ordinary and necessary in carrying on your trade or business. "Ordinary" means common and accepted in your field. "Necessary" means helpful and appropriate, not indispensable. A sound machine outside your therapy room clears that bar easily. A beach vacation does not, no matter how much you thought about work.

Two follow-on rules matter just as much. First, if something serves both business and personal purposes, you deduct only the business portion, and you need a reasonable basis for the split. Second, for a handful of categories (travel, meals, gifts and vehicle use) the law requires stricter proof than an amount on a credit card statement. Keep that in mind as you read.

The home office, including when you also rent an office

The two disqualifiers people trip over are exclusive and regular use. The space has to be used only for the practice, a spare bedroom that doubles as a guest room in December does not qualify, and used regularly, not once a quarter.

Assuming it qualifies, you choose between two methods, and you may switch year to year:

  • Simplified method. $5 per square foot, up to 300 square feet, so a maximum of $1,500. No receipts, no depreciation, no depreciation to recapture when you sell the house. Fast and clean.
  • Actual expense method. Take the business-use percentage of your home, office square footage divided by total square footage, and apply it to rent or mortgage interest, property tax, utilities, homeowners or renters insurance, and general repairs. Repairs made only to that room are deductible in full. Homeowners also depreciate the business portion of the house, which is a real deduction and a real recapture item later.

Now the part almost nobody gets told. Renting a clinical office does not automatically kill your home office. There is a separate qualifying route for the space where you conduct the administrative and management side of the practice (scheduling, billing, notes, insurance follow-up, bookkeeping) as long as you do not have another fixed location where you do substantial amounts of that work. Plenty of therapists see clients in a leased suite and do every bit of the paperwork at a desk at home. If that describes you, and the space is used exclusively and regularly, look at it seriously.

One limit: the home office deduction cannot create or increase a business loss. Under the actual method, a disallowed amount carries forward; under the simplified method it is simply lost for that year.

If your practice is an S corporation, this works differently. You are an employee of your own corporation, and employees cannot deduct these costs on their personal return. Instead, the corporation reimburses you under a written accountable plan, you submit a calculation with support, the company pays you, and the company takes the deduction. Same money, entirely different paperwork. Set it up before you need it.

Mileage: the drive that counts and the drive that does not

Commuting is personal. Driving from home to the office where you normally work is not deductible, and no amount of thinking about clients on the way changes that.

What is deductible is travel between business locations. Two examples that come up constantly in group and multi-site practices:

  • Office A in the morning, Office B in the afternoon, the trip between them is business mileage.
  • Office to a school, hospital, agency, client's home, supervision session, bank or post office and back, business mileage.

And here is where the home office pays off twice: if your home office is your principal place of business, trips from home to other work locations stop being commuting and become deductible business travel.

You can use the standard mileage rate, the IRS publishes it annually; it was 70 cents per mile for 2025, or track actual vehicle costs and deduct the business percentage. Choose carefully in the first year the car is used for the practice, because the rules on switching later are not symmetrical. Either way, vehicle expenses need real substantiation: date, destination, business purpose and miles. A mileage app that logs trips and lets you swipe each one business or personal turns a soft estimate into a defensible number.

A deduction you cannot document is not a deduction. It is a number waiting to be removed. What I tell every new client in month one

CEUs, licensure and professional dues

Education is deductible when it maintains or improves the skills required in the work you already do, or when your license or the law requires it to keep your credential. Continuing education units for a licensed clinician sit squarely in that category, along with the registration fee, the course materials, and the travel to get there if it is not local.

Education is not deductible when it qualifies you for a new trade or business, even if it makes you better at your current one. The graduate degree that got you licensed in the first place falls on the wrong side of that line. So does a program that moves you into a genuinely different profession.

Alongside CEUs, these routinely go unclaimed:

  • State license renewal and board fees
  • Professional association dues, APA, NASW, AAMFT, ACA, state chapters
  • Specialty certification and training programs in modalities you already practice
  • Professional books, assessment manuals and journal subscriptions
  • Directory listings and clinical registries you pay to appear in

One footnote on dues: the portion an association spends on lobbying is not deductible. Reputable organizations disclose that percentage on the invoice or the renewal receipt. Deduct the rest.

Clinical supervision and consultation

Supervision and peer consultation you pay for as a licensed clinician (to sharpen your work, to consult on a complex case, to stay current in a modality) is ordinary, necessary and deductible. So is what you pay to a consultation group.

The nuance is pre-licensure supervision. Hours you are required to accumulate in order to obtain a license look a lot like education that qualifies you for a new trade or business, and the treatment can differ depending on whether you were already carrying on a business at the time. If you are pre-licensure or newly licensed, this is worth ten minutes with your CPA rather than a guess on a return.

EHR, telehealth and the rest of the software stack

Subscriptions are so routine that they get forgotten, and in a modern practice they add up to real money:

  • Your EHR and practice-management platform, and any add-on modules
  • HIPAA-compliant telehealth and secure messaging
  • Encrypted email, password management, cloud storage and device security
  • Billing and claims services, clearinghouse fees, and credit card processing fees
  • Scheduling, e-signature, transcription and note-drafting tools
  • Website hosting, domain, email marketing and the directory profiles that feed referrals

Pull twelve months of bank and card activity and look specifically for recurring charges. That exercise almost always surfaces subscriptions nobody had categorized, and it doubles as a check that every vendor touching protected health information has a signed business associate agreement on file.

Insurance, the two kinds people confuse

Professional liability (malpractice) insurance is a business expense, straightforwardly deductible, along with general liability, a business owner's policy, cyber liability and any bond your state requires.

Health insurance is not. It does not belong on the practice's profit and loss statement. Instead, a self-employed owner deducts qualifying premiums (medical, dental and qualified long-term care for yourself, your spouse and your dependents) as an adjustment on the personal return. That deduction is capped at net earnings from the business and is unavailable for any month you were eligible for a subsidized employer plan, including a spouse's. S corporations have their own mechanic: the corporation pays or reimburses the premium and reports it in your W-2 wages. Miss that step and the deduction disappears.

Business meals, under the current rules

The temporary 100% deduction for restaurant meals ended after 2022. We are back to the ordinary rule: 50% of a qualifying business meal. To qualify, the expense cannot be lavish or extravagant, you or an employee must be present, and it must involve a business associate, a referral source, a colleague you are consulting with, a contractor, a prospective hire.

Two clarifications that save arguments. Lunch alone between sessions is not a business meal, however hard your day was. And entertainment (concert tickets, a round of golf, the sporting event you took a referral partner to) has been fully nondeductible since 2018. If food is purchased separately and separately stated at an entertainment event, the food can still be a 50% meal; if it is bundled into one ticket price, it is not.

The conference trip, split correctly

A trip that is primarily for business, within the United States, gets you the full cost of getting there and back. Layer the rest on top:

  • Registration and session fees, deductible in full.
  • Lodging, deductible for business days. If a Saturday night stay is required to get a sensible airfare, or the conference runs Friday and Monday, the days in between generally count too.
  • Meals while away overnight, 50%, either on actual receipts or using the federal per diem rate for the location.
  • Local transportation, baggage, tips, internet, deductible on business days.
  • Your spouse's ticket and meals, not deductible unless they are a genuine employee of the practice traveling for a genuine business reason. Coming along is not a business reason.

If you extend a three-day conference into a nine-day holiday, the trip has flipped to primarily personal and the airfare goes with it. The registration and the three business days still stand. Keep the agenda and the confirmation email, that one PDF answers most of the questions an examiner would ask.

Furnishing the therapy room

The chairs, the sofa, the rug, the lamp with the warm bulb, the art, the plants, the white-noise machine, the play therapy shelf, the sand tray, the weighted blankets, the waiting-room furniture, all of it is practice equipment.

How it comes off the return depends on cost. Larger purchases are capitalized and then expensed quickly through first-year provisions whose limits sit far above anything a therapy practice will spend. But the simplest tool for most practices is the de minimis safe harbor: with a written capitalization policy in place at the start of the year, you can elect to expense items costing up to $2,500 per item or per invoice outright, instead of tracking a depreciation schedule for a $900 chair. Write the policy, keep it on file, make the election with the return.

If the room in question is in your home, remember that everything still runs through the exclusive-use test.

What good substantiation actually looks like

Almost every deduction fight I have seen is a documentation fight, not a law fight. Four habits prevent nearly all of it:

  1. A separate business bank account and card. Every business dollar in and out moves through them. This single change does more for your deductions than any clever strategy.
  2. Receipts attached to transactions. Your bookkeeping software and your card issuer will both hold images. A statement line proves you spent money; a receipt proves what you bought.
  3. Business purpose written down at the time. One line in the memo field: "lunch, Dr. Patel, referral relationship." Six months later you will not remember, and reconstructed notes carry much less weight than contemporaneous ones.
  4. Keep it long enough. Three years from filing is the usual assessment window, longer in some circumstances, and records supporting depreciated assets need to survive for as long as you own the asset, plus that window.

Where to go from here

Read this with your own numbers open, not as a checklist to apply blindly. Whether a given item is deductible for you depends on your entity, your facts and your state, and this article is general information rather than advice about your situation. Please run the specifics past your own CPA before you file.

If you want to go further: our free e-book 12 Overlooked Tax Write-Offs for Mental Health Professionals goes deeper on several of these, the self-employment tax calculator shows what each additional deduction is actually worth to you, and tax preparation and planning is where we do this work with clients year-round instead of once in April.

Safietou D. Russell, CPA, EA, MST, founder of SDR Consulting Inc.
About the author

Safietou D. Russell, CPA, EA, MST

Founder & CEO, SDR Consulting Inc.

Safietou D. Russell, known as Safie for short, is a Certified Public Accountant, Enrolled Agent and Certified QuickBooks ProAdvisor with a Master's in Taxation. She has worked in tax and accounting since 2002, spent more than fifteen years in public accounting before founding SDR Consulting in 2016, and now builds her firm around mental health and wellness practice owners across all 50 states.