The Tax Cuts and Jobs Act dramatically changed the federal tax landscape for high-income professionals. For a married couple in which both spouses practice medicine, however, the result is not as simple as “lower tax rates equal a lower tax bill.” Dual-physician households often earn enough to lose valuable credits, exceed deduction phaseouts, trigger surtaxes, and discover that the famous qualified business income deduction is considerably less famous when the business happens to involve treating patients.
The original Tax Cuts and Jobs Act, commonly called the TCJA, took effect in 2018. Many of its individual provisions were initially scheduled to expire after 2025. Federal legislation enacted in 2025 made several major TCJA provisions permanent, modified others, and introduced new rules beginning in 2026. In other words, the tax code avoided a dramatic sunset and instead received another renovation. As with most renovations, the final invoice contains a few surprises.
This article uses a hypothetical two-physician couple to explain how the current TCJA framework can affect income tax rates, itemized deductions, medical-practice income, retirement savings, charitable giving, business purchases, and long-term estate planning.
Meet the Two-Physician Household
Consider Dr. Maya Chen and Dr. Evan Brooks, a married couple with two children. Maya is an employed anesthesiologist earning $390,000 in W-2 wages. Evan owns an orthopedic practice organized as an S corporation. His practice pays him a reasonable W-2 salary of $250,000 and generates another $220,000 of pass-through income.
| Household Item | Illustrative Amount |
|---|---|
| Maya’s W-2 salary | $390,000 |
| Evan’s S corporation salary | $250,000 |
| Evan’s pass-through practice income | $220,000 |
| Total earned and business income | $860,000 |
| State and local taxes paid | $55,000 |
| Annual charitable donations | $30,000 |
| Original home mortgage | $1,000,000 |
These figures are simplified, but they illustrate a common dual-physician situation: substantial gross income, multiple compensation sources, a costly home in a high-tax state, retirement plans from different employers, and enough tax forms to make the kitchen table resemble a small accounting firm.
Lower Federal Tax Rates Still Help
One of the most important TCJA changes was the creation of the current seven-bracket structure, with rates of 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Those rates were made permanent rather than being allowed to return to the generally higher pre-TCJA schedule. For 2026, married couples filing jointly do not reach the 37% bracket until taxable income exceeds $768,700.
That distinction matters for Maya and Evan. Although their gross household income is $860,000, deductions for retirement contributions, health savings, business expenses, mortgage interest, charitable gifts, and state taxes may bring taxable income below the 37% threshold. Their last dollar might therefore be taxed at 35% rather than 37%.
A marginal tax rate does not apply to every dollar the couple earns. Income is taxed in layers, with each portion falling into the appropriate bracket. Still, a two-percentage-point difference at the top can be meaningful when a household has hundreds of thousands of dollars exposed to the upper brackets.
The Larger Standard Deduction Is Mostly a Spectator
For 2026, the standard deduction for married couples filing jointly is $32,200. That is useful for many families, but Maya and Evan will probably itemize because their deductible mortgage interest, charitable giving, and allowable state and local taxes exceed the standard deduction.
The larger standard deduction nevertheless affects their planning. It creates a hurdle that itemized deductions must clear before providing any incremental tax benefit. A married couple with $20,000 of mortgage interest and $10,000 of deductible state taxes, for example, would still be below the standard deduction before considering other expenses.
The TCJA also reduced the personal exemption to zero, and the later legislation made that treatment permanent. Maya and Evan therefore receive no separate personal-exemption deduction for themselves or their children. The larger standard deduction and child-related credits were designed to offset that loss for many households, but the tradeoff becomes less generous when income is high enough to eliminate the credits.
The SALT Deduction Delivers Less Than the Headline Suggests
The state and local tax deduction, known as the SALT deduction, is particularly important to physicians living in states with high income and property taxes. The 2026 deduction cap is $40,400 for joint filers, but the expanded amount begins to phase down when modified adjusted gross income exceeds $505,000. It cannot fall below $10,000.
Maya and Evan pay approximately $55,000 in state income taxes and property taxes. At first glance, the $40,400 cap appears to be excellent news. Unfortunately, their income is high enough to phase the cap all the way back to $10,000. They pay $55,000, but only $10,000 reaches Schedule A. The remaining $45,000 receives no federal itemized deduction.
This creates an unusual planning zone for physician couples earning near the phaseout range. Reducing modified adjusted gross income through retirement-plan contributions, a health savings account, legitimate business deductions, or a cash-balance plan could produce two benefits at once: a direct deduction and the recovery of part of the expanded SALT allowance.
Evan may have another possibility because he owns a pass-through practice. Many states allow eligible partnerships and S corporations to elect pass-through entity tax treatment. The entity pays state tax directly and may deduct it as a business expense for federal purposes, while the owner receives a corresponding state credit or exclusion. The final 2025 federal legislation preserved this type of workaround, but availability, deadlines, and calculations differ by state.
The Mortgage Interest Deduction Has a Ceiling
Maya and Evan purchased their home after December 15, 2017, with a $1 million acquisition mortgage. Under current rules, interest on only the first $750,000 of qualifying acquisition debt is generally deductible for a married couple filing jointly.
If they pay approximately $50,000 of mortgage interest during the year and their average qualifying mortgage balance remains close to $1 million, only about 75% of that interest may be deductible. Their approximate deduction would be $37,500 rather than the full $50,000.
The limitation does not mean that buying an expensive home is automatically a bad decision. It means the couple should not let a real estate agent, a lender, or Uncle Bob at Thanksgiving describe the entire interest bill as “a write-off.” The tax deduction softens part of the cost; it does not make the cost disappear in a puff of itemized smoke.
Charitable Giving Now Requires More Deliberate Timing
Beginning in 2026, taxpayers who itemize generally deduct only the portion of qualified charitable contributions exceeding 0.5% of adjusted gross income. If Maya and Evan have adjusted gross income of roughly $755,000 after major pre-tax contributions, the first $3,775 of their itemized charitable giving produces no deduction.
With $30,000 of donations, their potentially deductible amount may therefore be approximately $26,225 before applying any other limitations. The charity still receives the full $30,000, of course. The tax code simply declines to applaud the first portion.
This rule may make donation bunching more attractive. Rather than giving $30,000 every December, the couple might contribute $90,000 to a donor-advised fund once every three years and recommend grants to charities over time. Concentrating deductions into one year can help them clear the charitable floor more efficiently while preserving a consistent giving schedule for the organizations they support.
The QBI Deduction Is the Biggest Disappointment for Evan
The TCJA introduced a deduction of up to 20% of qualified business income for owners of eligible sole proprietorships, partnerships, and S corporations. The deduction is now permanent, but physicians face a major restriction: healthcare is classified as a specified service trade or business, or SSTB.
For 2026 joint filers, the limitations begin above approximately $403,500 of taxable income and become fully effective at approximately $553,500. Once taxable income exceeds the upper end of the range, qualified income from a medical SSTB cannot generate a QBI deduction.
Maya’s W-2 wages never qualify as QBI. Evan’s $250,000 S corporation salary also does not qualify because reasonable compensation is wage income. His $220,000 pass-through profit could theoretically be QBI, but the couple’s taxable income is well above the SSTB phaseout ceiling. Their medical-practice QBI deduction is therefore likely zero.
This is a crucial lesson for high-income physicians: creating an LLC or electing S corporation status does not automatically produce a 20% deduction. Nor can a doctor simply rename clinical income as “consulting revenue” and hope the tax code forgets what happened in the examination room.
Reducing taxable income below the phaseout range may restore part of the deduction in some years. Large retirement contributions, a defined-benefit plan, business losses, or unusually high charitable deductions could help, but the calculations must be modeled carefully. Saving one dollar of taxable income can sometimes unlock more than one dollar of effective tax benefit when several phaseouts overlap.
Employee Expenses and Practice Expenses Receive Different Treatment
The permanent elimination of most miscellaneous itemized deductions is especially relevant to Maya. As a W-2 employee, she generally cannot personally deduct unreimbursed expenses such as medical licensing fees, professional society dues, continuing medical education, board-review materials, work-related travel, or equipment used for her hospital job.
The better arrangement is an accountable reimbursement plan operated by her employer. When properly structured, the hospital reimburses legitimate business expenses without treating the reimbursement as taxable wages. Maya should therefore review her employer’s reimbursement policies before paying substantial professional costs herself.
Evan’s situation is different. His practice can generally deduct ordinary and necessary business expenses before pass-through income reaches the couple’s personal tax return. Eligible expenses may include staff compensation, malpractice coverage, billing systems, rent, medical supplies, continuing education, professional fees, and qualifying travel.
The distinction makes recordkeeping essential. A $3,000 conference expense may produce no deduction when paid personally by a W-2 doctor, yet it may be deductible when properly paid or reimbursed by a medical practice.
Retirement Accounts Are the Couple’s Most Reliable Tax Tool
In 2026, an employee can generally defer up to $24,500 into a 401(k), 403(b), or governmental 457(b) plan, subject to plan rules. The total defined-contribution limit for employee and employer contributions is generally $72,000, excluding eligible catch-up contributions. The family health savings account contribution limit is $8,750.
If Maya contributes $24,500 to her hospital’s 403(b) plan and Evan contributes $24,500 to his practice’s 401(k), their combined taxable wages fall by $49,000. Evan’s practice might also make an employer profit-sharing contribution, potentially bringing his total annual plan contribution to $72,000.
If Maya has access to a governmental 457(b), she may be able to defer another $24,500 because a 457(b) has a separate contribution limit from a 403(b). She should evaluate the plan’s distribution rules, fees, investment menu, and creditor characteristics before contributing.
Evan’s practice could also explore a cash-balance or defined-benefit pension plan. Depending on his age, compensation, employee demographics, and actuarial design, the plan might permit a six-figure deductible contribution. It is not a magic physician-only tax shelter; it is a real pension plan with funding obligations, administrative expenses, and employee-coverage requirements.
Children Do Not Guarantee a Child Tax Credit
The current Child Tax Credit can be worth up to $2,200 for each qualifying child, but the credit begins phasing out when modified adjusted gross income exceeds $400,000 for a married couple filing jointly.
With income well above that threshold, Maya and Evan will probably receive no Child Tax Credit. They still pay for childcare, summer programs, orthodontics, school activities, and the mysterious weekly disappearance of groceries, but those expenses do not revive the phased-out credit.
They should nevertheless examine employer dependent-care benefits, 529 education accounts, and any state-level deductions or credits. Federal tax benefits may be limited, while state rules can produce separate opportunities.
High-Income Surtaxes Remain in the Picture
The Additional Medicare Tax and Net Investment Income Tax were not created by the TCJA, but they remain part of the couple’s effective tax burden. Married joint filers generally owe an additional 0.9% Medicare tax on combined Medicare wages and self-employment income exceeding $250,000.
Maya and Evan have $640,000 of combined W-2 wages. Their excess over the $250,000 joint threshold is $390,000, potentially generating approximately $3,510 of Additional Medicare Tax. Payroll withholding can be imperfect because each employer sees only one spouse’s wages, not the couple’s combined income.
The 3.8% Net Investment Income Tax can also apply to interest, dividends, capital gains, rents, and other net investment income once joint modified adjusted gross income exceeds $250,000. If the couple has $40,000 of net investment income, the NIIT could add as much as $1,520.
For this reason, estimated-tax planning should include more than ordinary federal brackets. A seemingly harmless year-end capital gain can arrive with a 3.8% companion.
Practice Equipment Can Produce an Immediate Deduction
Current law permanently allows 100% first-year bonus depreciation for many types of eligible business property acquired after January 19, 2025. Evan’s practice might therefore deduct the full qualifying cost of computers, office furniture, diagnostic equipment, machinery, or certain improvements in the year the property is placed in service.
Suppose the practice purchases $120,000 of eligible equipment. An immediate deduction could reduce pass-through income and current federal tax. It may also affect state taxes, although not every state follows the federal bonus-depreciation rules.
A deduction should never be the only reason to buy equipment. Spending $120,000 to save perhaps $40,000 in taxes still leaves the practice roughly $80,000 poorer. The purchase should improve capacity, efficiency, patient care, or profitability. Tax savings are the side dish, not the entrée.
The Estate Tax Exemption Provides Long-Term Breathing Room
The federal estate and gift tax exemption is $15 million per person in 2026, or potentially $30 million for a married couple with proper planning and portability. The amount is indexed for inflation.
Many successful physicians can accumulate substantial wealth through decades of high earnings, practice ownership, real estate, and investment growth. Maya and Evan may not have a federal estate-tax problem today, but their projected net worth at age 70 could look very different.
The higher exemption reduces the immediate pressure to make large irrevocable gifts solely to avoid federal estate tax. It does not eliminate the need for wills, beneficiary reviews, durable powers of attorney, healthcare directives, trusts for minor children, or state estate-tax planning. Some states impose estate or inheritance taxes at thresholds far below the federal amount.
Practical Tax Moves for a Two-Physician Couple
Coordinate Both Payroll Systems
Each employer withholds taxes based primarily on the compensation it pays. Maya’s hospital does not automatically know about Evan’s practice income, and Evan’s payroll system does not know Maya’s salary. The couple should complete coordinated withholding calculations and make quarterly estimated payments when necessary.
Fill Every Reasonable Pre-Tax Account
Traditional retirement plans, an HSA, a governmental 457(b), and a properly designed practice retirement plan may reduce income taxed at high marginal rates. They can also improve eligibility for deductions tied to adjusted gross income.
Review the State PTET Election Annually
Pass-through entity tax elections can be valuable, but state rules change. Elections may require payments before year-end, may be irrevocable, and may affect nonresident owners differently.
Use an Accountable Plan
Maya should seek employer reimbursement for qualifying employee expenses. Evan’s S corporation should maintain a written accountable plan for legitimate business costs he pays personally, including professional expenses, mileage, technology, and qualifying home-office costs.
Model Charitable Gifts Before December
The couple should compare annual giving with a bunching strategy. Appreciated securities may be more tax-efficient than cash because a properly structured donation can avoid capital-gains tax while creating a charitable deduction.
Avoid Aggressive Income Relabeling
A physician’s clinical income remains medical-service income even when deposited into an LLC with an impressive name. Entity selection should be based on payroll taxes, liability considerations, retirement-plan design, administrative costs, and state lawnot on creative labeling.
A Tax-Year Experience: What This Couple Learned
When Maya and Evan first reviewed the TCJA rules, they expected a fairly simple outcome. Tax rates had fallen, Evan owned an S corporation, and every article they encountered seemed to celebrate the 20% pass-through deduction. They assumed the practice deduction alone would remove tens of thousands of dollars from taxable income.
The first planning meeting quickly corrected that assumption. Their accountant explained that Evan’s medical practice was an SSTB and that the couple’s taxable income was far above the QBI phaseout ceiling. The projected deduction was not $44,000. It was zero. Evan stared at the worksheet as if it had just recommended treating a fracture with positive thinking.
The SALT calculation delivered the second surprise. Their state income taxes and property taxes exceeded $55,000, so the expanded federal cap sounded helpful. Once their income-based phaseout was calculated, however, they were back at a $10,000 personal deduction. The accountant then examined their state’s pass-through entity tax election. Because Evan’s S corporation qualified, making the election allowed part of the practice-related state tax to be deducted at the business level. The benefit was meaningful, but it required advance payments and additional state filings.
Maya’s professional expenses created another lesson. She had personally paid for a conference, board-maintenance fees, licensing costs, and travel because requesting reimbursement felt inconvenient. Those expenses did not generate a federal itemized deduction. The following year, she learned the hospital’s reimbursement portal, submitted expenses promptly, and stopped donating after-tax dollars to her employer’s operating budget.
Their biggest improvement came from retirement planning. Maya increased her 403(b) contribution to the annual maximum and began using her governmental 457(b). Evan redesigned the practice’s 401(k) and profit-sharing formula with a third-party administrator. After reviewing employee costs and cash-flow requirements, the practice added a cash-balance plan.
The new retirement structure reduced current taxable income far more reliably than the strategies they had previously discussed, such as buying a luxury vehicle because someone on social media called it “free after taxes.” Their accountant gently explained that depreciation is not a reimbursement program operated by the federal government.
Charitable planning also became more intentional. Instead of writing similar checks every year, Maya and Evan donated appreciated index-fund shares to a donor-advised fund. They concentrated several years of giving into one tax year, cleared the charitable deduction floor, avoided realizing capital gains on the donated shares, and continued sending grants to their preferred charities on their normal schedule.
By year-end, the couple had not discovered a secret loophole. They had built something more useful: a coordinated system. Payroll withholding reflected both incomes. Practice expenses stayed inside the practice. Retirement plans were funded automatically. Estimated taxes were reviewed each quarter. Charitable gifts were evaluated before December 31 rather than during a frantic conversation on New Year’s Eve.
The experience changed their definition of tax planning. It was no longer a search for exotic deductions or clever entity names. It became an annual process of placing income, expenses, investments, and benefits in the correct tax buckets. That process saved money, reduced filing surprises, and produced far fewer heated discussions with spreadsheets.
Conclusion
The Tax Cuts and Jobs Act framework gives this two-physician couple meaningful benefits, particularly through permanently lower individual tax rates, a larger standard deduction, expanded business depreciation, and a historically high estate-tax exemption. Yet the same household also encounters significant restrictions.
The income-based SALT phaseout may reduce a seemingly generous deduction back to $10,000. The mortgage interest limit prevents full deductibility on a large post-2017 home loan. The charitable floor trims itemized donations. Child-related credits disappear at high income, and the QBI deduction may provide no benefit because medical practices are specified service businesses.
The couple’s strongest strategies are generally the least theatrical: maximizing appropriate retirement accounts, using an HSA, coordinating withholding, claiming legitimate practice expenses, considering a state PTET election, obtaining employer reimbursement, bunching charitable gifts, and reviewing the plan every year.
The tax code may be complicated, but the central objective is straightforward. Maya and Evan should organize their financial lives so that every available deduction is used legally, every phaseout is anticipated, and no unnecessary tax surprise arrives after an exhausting week of call shifts.
