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Most HVAC and trade owners pick a CPA the same way they pick a coffee shop: whoever a buddy mentioned first.
That works until install season hits, your books are a mess, and the IRS sends a letter asking about your S-Corp salary.
The right CPA for a $750K HVAC shop is not the right CPA for a side hustler with a Schedule C, and the right CPA for a plumber with two trucks is not the right CPA for a doctor’s office.
Trade businesses have specific tax and cash flow patterns that need a CPA who has actually seen them. The seven questions before hiring a CPA for your HVAC or trade business below filter out the wrong fit before you sign a single engagement letter.
Question 1: How many HVAC, plumbing, or electrical clients do you currently work with?
A CPA who serves 10 or more HVAC, plumbing, or electrical clients sees patterns a generalist never will, and that experience usually pays for the fee difference within the first year.
The patterns that matter for trade businesses are specific: seasonal revenue swings of 30 to 50%, install jobs that drag across three months on the P&L, truck depreciation timing, sales tax on parts vs labor, technician pay structures, and the W-2 vs 1099 question that the IRS audits hard on trades. A CPA with 200 mixed clients and two HVAC accounts is still learning your business on your dime.
Ask for specifics. How many trade clients, which trades, and what revenue range. Look for an answer that sounds conversational rather than rehearsed.
Our Fort Worth HVAC accounting team works largely with DFW trade businesses, which is why most first meetings get to “here is the move” faster than they would somewhere else.
Question 2: What credentials do you hold, and can I see your IRS-issued PTIN?
The IRS recognizes only three credentials that come with full representation rights: CPA, Enrolled Agent (EA), and attorney. Everyone else who prepares returns for pay has a Preparer Tax Identification Number (PTIN) but cannot fully represent you in an audit or appeal.
The IRS keeps a public directory of credentialed preparers you can search by name and zip code, and by law, every paid preparer must have a valid PTIN on every return they sign. If a preparer is vague about their credentials or refuses to share their PTIN, that is the signal to keep looking.
CPAs sit at the top of trade business work because the role usually goes beyond compliance: business structure decisions, S-Corp compensation reviews, multi-year planning, and IRS representation if anything goes sideways. EAs are tax specialists and can be excellent for filing-only relationships. A non-credentialed preparer charging $150 to file a Schedule C is fine for a side hustle, not for a $1M HVAC shop with two trucks and three employees.
Question 3: Do you offer year-round tax planning, or are you only available during filing season?
The actual savings on a trade business return come from decisions made in May, July, and October, not from anything that happens at the filing deadline. A CPA who only shows up between January and April is a tax preparer with a fancier title.
Most of the real moves are time-sensitive: whether to buy or finance a truck before year-end, when to invoice a big install job, whether to elect S-Corp this year or wait, and whether to use Section 179 or bonus depreciation on a $40,000 piece of equipment.
The 2026 Section 179 deduction limit is $2.56M with a $4.09M phase-out, and bonus depreciation is back to 100% for qualified property placed in service after January 19, 2025. The rules sound generous on paper, but timing the purchase is what turns them into real cash in your bank account.
Let’s look at an example. An HVAC owner clearing $180,000 in net profit who waits until April to talk to a CPA can usually save $4,000 to $6,000 a year more by switching to mid-year planning conversations. A truck purchase timed correctly under Section 179 can shift a $30,000-plus deduction from one tax year to another, which can be the difference between writing the IRS a check and getting a refund.
Question 4: How do you decide reasonable salary for a trade business S-Corp, and how do you document it?
Any CPA worth hiring will talk about reasonable compensation with confidence and back it up with industry data. If they shrug and pick a round number, find another one.
The S-Corp election is usually the single biggest tax move for a profitable HVAC or trade business, and it is also the most-audited area on a trade S-Corp return. The IRS has published explicit guidance on S-Corp officer compensation and has won a long string of court cases against owners who paid themselves $20,000 in W-2 wages while taking $200,000 in distributions.
Trade businesses come up often in those cases because the owner is the technician, the salesperson, and the operator.
A real CPA for trades will pull industry comp data, look at your specific role in the business, and document the salary decision in writing so it holds up if questioned. Ask them what reasonable compensation would look like for a $400,000-revenue HVAC shop where the owner runs sales and quotes. If they answer with confidence and reference data, that is the right CPA.
If they say “let’s just go with $40,000,” keep looking. You can run the math yourself first with our S-corporation tax calculator so you know roughly where the numbers should land before the conversation.
Question 5: How will we handle quarterly tax estimates and cash flow forecasting through the seasons?
A trade business CPA should run quarterly estimates from real year-to-date numbers, not last year’s safe harbor, and should flag a cash crunch six weeks before it hits.
HVAC and trade businesses swing 30 to 50% in revenue between peak and shoulder seasons. A CPA who calculates estimated tax payments on prior-year numbers and never adjusts is leaving you holding a giant April bill or a giant overpayment refund. Neither is good for cash flow. The right CPA looks at the year-to-date P&L every quarter and adjusts the estimate accordingly so the April number is no surprise.
For trade businesses pushing past $1M in revenue, the cash flow conversation should also cover working capital: how much cash to keep on hand to cover payroll plus 60 days of materials when AR runs slow, how seasonality affects your line of credit usage, and whether to time a truck purchase against your peak cash month.
If your CPA is not asking those questions, they are filing taxes, not actually managing the financial side of your business.
Question 6: Can you give me a written quote for the full year of work, with what is included and what is billed extra?
Any CPA who cannot tell you what a full year of bookkeeping, tax prep, and planning meetings will cost is either disorganized or hiding hourly billing surprises.
Trade business CPAs in Texas in 2026 generally charge in three structures: flat monthly retainer ($800 to $2,500 a month covering bookkeeping, tax plus planning), hourly ($175 to $450 an hour depending on credentials and city), or a la carte tax prep ($800 to $2,500 per return depending on complexity). Flat monthly is usually the cleanest structure for an owner-operator because the bill does not change based on how many phone calls you make in a busy month.
Ask for the quote in writing with what is included AND what is billed extra. The phrases that flag trouble in the answer: “we will discuss fees as work comes up,” “billed at our standard rate,” or “we will see what we run into.”
A reputable CPA writes an engagement letter that spells out scope and fees before any work starts, and updates it if scope changes mid-year.
Question 7: Who will be my day-to-day contact, and what is the typical turnaround on calls and emails?
The CPA you meet during the sales pitch is rarely the person you will actually work with after you sign. Asking who handles the account is how you find out before it becomes a problem.
Big regional CPA firms staff sales partners up front and shift the actual work to junior staff once you sign. There is nothing automatically wrong with that model. Junior staff are often quite good, and the partner reviews the work. But you need to know going in. A small Fort Worth firm where the owner is also your CPA is a different relationship from a 50-person firm where you talk to your CPA twice a year, and neither is automatically better. The mismatch is what causes friction down the road.
Ask three communication questions: who is my primary point of contact, what is the typical turnaround on an email or call, and how do you handle urgent questions during install season or year-end. A CPA who answers “24 to 48 hours, and I will give you my cell for tax planning emergencies” is making a different promise than one who says “we will respond as soon as we can.”
Pick the relationship that fits how you actually run your business.
If you run an HVAC, plumbing, electrical, or other trade business in DFW and want to talk through where you would stand on these seven questions, get in touch with the Adam Traywick team. The first conversation is a real conversation, not a sales pitch.
Until next time!
Adam Traywick, CPA is the President and founding CPA of Adam Traywick, LLC, a Adam Traywick CPA small-business accounting firm. He has over 20 years of experience helping small business owners across home-services trades, hair salons, real estate, and insurance agencies optimize taxes, run cleaner books, and avoid the surprises that come from once-a-year accountants.
