Your Tax Return Is a Diagnostic Report. Here's How to Read It.
Here's a conversation that illustrates the gap. A surgeon gets his 2025 return back from his CPA. Everything was filed. Everything was accurate. And his response: "Alright, that's done. See you in January."
Ask that surgeon if he's read it.
"Read it? My CPA read it. That's what I pay him for."
He's not wrong about that. His CPA did exactly what a CPA is supposed to do: ensure compliance, file accurately, meet the deadline. But here's the thing. Your CPA reads your tax return the way a radiologist reads an image for a referring physician. They're looking for findings within their scope. They're not designing your treatment plan.
You, as the surgeon, read the same image and see something different. You see the implications for the patient's function, mobility, quality of life. You see what the findings mean for the plan.
Your tax return works the same way. And most surgeons have never looked at it through that lens.
The Four Diagnostic Markers
Over the last four weeks, we've been building a diagnostic framework for your financial structure: entity design, S-Corp salary calibration, reimbursement pressure, and the effective hourly rate. Your tax return is where all four of those conversations produce measurable findings. It's the imaging study that confirms or challenges what you suspected.
There are four specific line items (or clusters of line items) on your return that function as diagnostic markers. Each one has a “typical range” at your income level. Each one tells you something specific about whether your financial structure might be working or leaking. And each one points toward potential treatment options to explore with your advisory team.
Let me walk through them.
Finding 1: Effective Tax Rate
Where to find it: divide your total tax (line 24 on Form 1040, or the “total tax” figure your CPA provides) by your adjusted gross income (line 11).
For a surgeon with AGI of $820,000, an effective rate of 36.3% ($298,000 in total tax) is not unusual at this income level. But in many cases, surgeons with similar income and a fully built-out planning structure may see effective rates closer to the low-30s, depending on their specific facts, deductions, and state of residence.
An example: an owner-surgeon at $820K AGI, with a calibrated S-Corp salary, a thoughtfully designed retirement plan stack, and appropriate deduction strategies, might land in a broad range around 31%–33%. That’s not a promise or a “correct” number, but it’s a useful benchmark for asking whether your structure deserves another look.
The gap between 36.3% and 32% on $820,000 is roughly $35,000 per year. That’s not a rounding error. That’s a recurring cost of structural misalignment that shows up, in black and white, on a single line of your return.
If your effective rate is in the mid‑30s or higher at $800K+ in AGI, your return may be signaling that your structure has room to improve. The treatment plan often starts with the concepts we covered in Week 1 (entity design) and Week 2 (S-Corp salary calibration), evaluated with your CPA and advisor together.
Finding 2: The QBI Deduction
Where to find it: line 13 on Form 1040, “Qualified business income deduction.”
The Qualified Business Income (QBI) deduction allows many owners of pass-through entities (S-Corps, partnerships, sole proprietorships) to deduct up to 20% of their qualified business income, subject to complex limitations. For a surgeon with $745,000 in practice income flowing through an S-Corp, the potential deduction in some scenarios could be material.
But many surgeons have $0 on this line. Common reasons include:
S-Corp salary set relatively high compared to pass-through income
Overall taxable income above the applicable thresholds
The fact that most medical practices are “specified service trades or businesses” (SSTBs), which are subject to stricter QBI phaseouts and limits for higher-income taxpayers
Those factors can trigger wage or income limitations that cap or eliminate the deduction.
This is exactly the dynamic we discussed in Week 2. The S-Corp salary is a three-variable equation (payroll tax, retirement contributions, and the QBI deduction), and many CPAs understandably focus primarily on compliance and reasonableness. Your tax return shows you the result of that balance.
If your QBI deduction is $0 or significantly below what you expected at your income level, the return is flagging that salary levels, entity structure, and/or income thresholds may be limiting the deduction. The treatment: have your CPA and advisor model different salary and entity scenarios for the current year, before the next quarterly payroll cycle, to see whether there is a more efficient structure for you going forward.
Finding 3: Retirement Contributions
Where to find it: pull your W-2 Box 12 (retirement plan contributions), any SEP-IRA or cash balance plan contribution records, and your total retirement savings for the year.
Consider a surgeon whose return shows total retirement contributions of $31,000. That’s in line with maxing out a typical 401(k) salary deferral with age‑50+ catch-up in 2025 (for example, a $23,500 elective deferral limit plus a $7,500 catch-up contribution for those 50 or older, if the plan allows).
And technically, yes: “I maxed out my 401(k).” But the available capacity was much larger.
In one illustrative design for a 54-year-old practice owner at this income level, a combination of 401(k) elective deferrals, employer profit-sharing, and a properly designed cash balance plan could allow total tax‑deferred contributions in the neighborhood of $200,000, depending on IRS limits, compensation, and plan specifics. In that kind of scenario, capturing $31,000 out of roughly $203,000 in potential tax‑deferred space is about 15% utilization.
The unused gap compounds every year. Over ten years, assuming a steady annual gap on the order of $170,000 and a hypothetical 7% annual return, the future value of those missed contributions can be on the order of a couple million dollars in additional retirement assets. That’s not a prediction or guarantee, but it illustrates how structural design (or the lack of it) can change a retirement outcome.
If your total retirement contributions are well below six figures and you're a practice owner over 45, the return may be diagnosing a retirement plan design gap. The treatment: evaluate, with a retirement plan specialist and your CPA, whether an upgraded 401(k) design and a cash balance plan established alongside your existing plan could unlock additional tax‑deferred capacity.
Finding 4: State Tax Burden
Where to find it: Schedule A (if itemizing) or your state tax return.
A surgeon in California, New York, or New Jersey often faces top marginal state income tax rates in the high single digits to low teens, depending on income level and locality. On $820,000 of income, that can translate into tens of thousands of dollars of state tax each year, sometimes in the $50,000–$100,000+ range, depending on the exact situation.
This marker is different from the other three because the treatment isn’t always obvious or immediately actionable. You can’t just “optimize” your state tax the way you can recalibrate a salary. But seeing the number forces a strategic question: is your state residency costing you more than you’ve accounted for?
For surgeons 3 to 5 years from practice transition, state tax strategy can become a major variable. In some modeled scenarios, the difference between practicing (and selling) in a high‑tax state versus a no‑income‑tax state can reduce total tax on a practice exit by several hundred thousand dollars, depending on valuation, timing, and specific state rules. That doesn’t mean you should move tomorrow. But it does mean the state line on your return is a finding worth investigating as you approach a transition.
If your state tax burden exceeds $50,000, your return is telling you that state‑level strategy deserves a seat at the planning table. The treatment: make sure your exit or transition planning includes state tax trajectory and potential residency planning, coordinated with tax and legal counsel.
The Diagnosis Nobody Made
Here’s what makes this framework so powerful. Consider a return that contains each of these findings. Effective rate in the mid‑30s. QBI deduction at $0. Retirement contributions at $34,000 against an illustrative capacity of $200,000+. State tax of $63,000.
The CPA filed a clean return. Every number was accurate. Every form was correct. There was nothing wrong with the compliance work.
But nobody read the return for strategy. Nobody looked at those four numbers and said, “Here’s what this could mean for your wealth over the next decade.” The return was treated as a historical document, a record of what happened, rather than a diagnostic tool that reveals what might need to change.
It’s the difference between filing an image and reading an image. Both are necessary. Only one changes the treatment plan.
What to Do This Week
Whether you’ve already filed or you’re planning to extend, your 2025 return (or the data that will go into it) contains diagnostic information that can shape your 2026 strategy. Here’s a simple protocol:
If you’ve filed:
Pull your return and locate the four markers: effective tax rate, QBI deduction, retirement contributions, and state tax.
Compare each one to the “target ranges” and examples described above, understanding they’re benchmarks, not rules. Note which markers appear outside where you’d like them to be.
For each out‑of‑range finding, identify which structural element is likely responsible (entity design, salary calibration, retirement plan design, or state strategy).
Bring those findings to your next conversation with your advisory team – your financial advisor and your CPA – so they can coordinate on your plan going forward.
If you haven’t filed (and are considering an extension):
Good. More than half of high‑income taxpayers extend in many years, and often for good reason. The extension doesn’t just defer the filing. It opens a six‑month window (typically April 15 to October 15) where you can gather the data, model alternatives, and make structural changes for the current year before your prior‑year return is even finalized. Remember, an extension is an extension of time to file, not an extension of time to pay; the IRS still expects you to pay your estimated tax by the original April deadline to avoid interest and penalties.
If you’re extending, pull your 2025 draft data now. Run the four‑marker diagnostic. And use the extension window to implement the changes that the return is telling you to consider.
Either way, the return is trying to tell you something. The question is whether you’ll read it for compliance or for strategy.
The Return as a Treatment Plan
I want to close with something I keep coming back to.
You’ve spent your career reading diagnostic images. You know that the value isn’t in the image itself. It’s in the interpretation. It’s in understanding what the findings mean for the patient’s future, and designing a plan that changes the trajectory.
Your tax return is a 30‑page diagnostic report on your financial structure. Your CPA read it for compliance. That’s important, and you should keep paying them to do it. But someone needs to read it for strategy. Someone needs to look at those four findings and connect them to a plan that changes the trajectory of your wealth.
A diagnosis without a treatment plan is just information. And information, by itself, doesn’t compound. Structure does.
Capably Yours,
Jared
IMPORTANT DISCLOSURE
The examples in this article are hypothetical and for illustrative purposes only. They do not represent tax, legal, or investment advice, and they may not reflect current IRS limits or your specific circumstances. Tax laws and contribution limits change over time. Any tax outcomes will depend on your individual situation and are subject to change with tax law. You should consult your CPA, tax advisor, and appropriate legal counsel before making any changes to your entity structure, compensation, retirement plans, or state of residence, or before implementing any strategy discussed here.