How a Physician Group Restructured to Cut Its Tax Bill by Six Figures

How a Physician Group Restructured to Cut Its Tax Bill by Six Figures

Four physicians billing $3.8M between them, taxed as one undifferentiated entity, were paying a federal tax bill that nobody had ever actually modeled.

This is a physician group tax restructure case study — an illustrative composite, not a real client file — that shows what changes when entity-level tax planning catches up with what the group is actually earning. The numbers are constructed for teaching. The strategies are real and available to most professional groups operating at this scale.

The short version: a four-physician practice was operating as a single S-corp with no retirement plan past a basic 401(k) and no PTET election. A coordinated restructure added a cash balance plan layered with a defined contribution plan, paired with a PTET election to capture the state tax deduction the SALT cap was otherwise blocking. The combined moves cut the group's federal tax bill by well into six figures, with no change in revenue and no change in clinical operations.

The setup behind this physician group tax restructure case study

Call the practice Meridian Medical. Four physicians — three at the partner level, one approaching partnership — operating a multi-specialty outpatient practice in a high-tax state. Trailing twelve-month revenue $3.8M, partner compensation after overhead averaging $625K per partner, taxed as an S-corp passing all profits through to the partners' individual returns.

The practice's retirement plan was a Safe Harbor 401(k) with the maximum employee elective deferral (the §402(g) limit — $23,500 for 2025, indexed annually) and a 4% Safe Harbor match. The partners were maxing the employee deferral but contributing modest employer contributions. Total combined retirement contributions per partner: roughly $35,000 a year.

The state of operation had a top-bracket personal income tax around 9%. The federal SALT cap (IRC §164(b)(6)) limits the state and local tax an individual can deduct. The Tax Cuts and Jobs Act set that cap at $10,000; the One Big Beautiful Bill Act raised it to $40,000 for 2025 through 2029, but the higher cap phases back down toward $10,000 once modified AGI exceeds $500,000. At roughly $625K of compensation per partner, these physicians sat squarely in that phase-down — so they were still losing a meaningful slice of their state tax deduction at the federal level.

Nobody at the practice had run the numbers on the alternatives. The CPA who had handled the group for years was a competent generalist who hadn't been asked to think beyond the annual return.

Why the existing structure was leaking

Three separate leaks, each independently meaningful, none being addressed:

• Underused retirement plan structure. The 401(k) Safe Harbor design was leaving substantial qualified-plan capacity on the table. For high-income physicians in their 50s, a properly designed cash balance plan layered with a profit-sharing component can shelter $200K–$300K per partner annually under IRC §415(b) funding rules.
• No PTET election. More than 30 states allow pass-through entities to elect to pay state income tax at the entity level, with the entity-level tax deducted federally — effectively bypassing the individual SALT cap. The One Big Beautiful Bill Act preserved this workaround, so it remains live and is most valuable to high earners whose individual cap phases down. The practice hadn't elected.
• Compensation structure not optimized for the contributions. Under qualified plan rules, the contribution opportunity depends on W-2 wages from the practice. The existing wage structure was lower than it could be while still leaving room for distribution income — limiting the qualified plan capacity.

The CPA who'd been handling the practice was filing accurate returns. The advisor work — the structural decisions that change the size of the return — had not been part of the engagement.

What CPA on Fire modeled

The engagement opened with a multi-year tax model that ran the existing structure forward five years, then ran four restructure scenarios alongside it.

The recommended structure included three coordinated moves:

• A cash balance plan, designed by a qualified actuary, layered on top of the existing 401(k). Annual funding targeted approximately $150K per partner, with the contribution amount calibrated to each partner's age and years to anticipated retirement under IRC §401(a)(26) and §410(b) coverage rules.
• A modified profit-sharing component within the existing 401(k) structure, designed to maximize the combined contribution limits between the two plans for each partner. Combined contributions per partner targeted $220K–$280K depending on age and W-2 wage levels.
• A PTET election for the state, filed by the practice and paying state tax at the entity level. The election shifted roughly $190K of state tax from the partners' individual returns (where it was capped) to the entity (where it was federally deductible).

The compensation structure was adjusted modestly to support the qualified plan contributions — W-2 wages at the partner level were brought up to a level that supported the cash balance plan's funding while preserving meaningful distribution treatment for SE tax purposes.

The math, before and after

Before the restructure (illustrative, per partner average):

• W-2 wage: $250K.
• S-corp distribution: $375K.
• Federal income tax (combined ordinary + AMT consideration): roughly $215K.
• State income tax (after SALT cap): roughly $36K creditable on federal return out of $58K paid.
• Retirement contribution: $35K (4% match + deferral).
• Effective combined federal-and-state tax burden: roughly $237K per partner.

After the restructure (illustrative, per partner average):

• W-2 wage: $310K (calibrated to support the qualified plans).
• S-corp distribution: $235K.
• Combined retirement contribution: $240K (cash balance + profit sharing + deferral). Deductible to the practice, reducing partner-level pass-through income.
• PTET state tax: paid at the entity level, deducted federally before pass-through.
• Federal income tax: roughly $135K per partner.
• Net state tax (after federal deduction at the entity level): roughly $43K.
• Effective combined federal-and-state tax burden: roughly $178K per partner.

Annual tax reduction per partner: approximately $59K. Across four partners: roughly $236K of annual federal-and-state tax savings.

A significant portion of the "savings" is actually deferred (the retirement contributions are deductible now and taxable at distribution decades later). But the time-value of those deferrals is meaningful, and a meaningful slice of the change — particularly the PTET-driven federal deduction recovery — is permanent.

What had to be in place

The structure isn't a single election. It's a stack of coordinated moves, each with its own requirements:

• The cash balance plan required a qualified actuary, a plan document filed and adopted, and a coverage and nondiscrimination test that worked for the practice's W-2 staff (not just the partners). Plan administration costs run roughly $8K–$15K annually for a four-partner practice.
• The combined plan structure required IRS Form 5500 filings and ongoing compliance — a real but manageable lift handled by the plan administrator.
• The PTET election required the practice to make the election by the state's deadline (varies by state, often by the original due date of the entity's return), make estimated payments, and reconcile the partner-level credit on their personal state returns.
• The compensation adjustment required the practice's payroll provider to update wage levels and the partners to accept a slightly different cash flow rhythm.

All of it was administrative work that paid for itself many times over in the first year of the structure.

What this physician group tax restructure case study shows

For partner-level professional groups operating in high-tax states, the gap between a generalist tax return and a deliberately structured one usually clears six figures annually. The strategies aren't exotic. They require coordination across an actuary, a plan administrator, and a CPA willing to model the alternatives rather than just file what already exists.

The partners who run the analysis usually find that the cost of doing nothing — quietly compounded across years of unoptimized structure — is far larger than the cost of the change.

Find a CPA who runs the model before recommending the structure

If your group is running on a structure designed three or more years ago, with the same retirement plan and no PTET election, the model is worth running.

CPA on Fire works with physician groups and other partner-level practices on the qualified plan design, PTET election positioning, and the multi-year tax model that quantifies the alternatives before any change is made. Read their Sam's List reviews and book an intro call before the next tax year locks in another year of the existing setup.