The professional practice tax strategy library
Specified service businesses face extra limits, which makes retirement plan design and real estate ownership more important.
Best forProfitable practices with owners 45+Primary leverLarge deductible contributions
RetirementCash balance plan plus 401(k)
A cash balance plan is a defined benefit plan that is expressed as an account. Contribution limits rise with age and are set actuarially. Paired with a safe harbor 401(k) and profit sharing, it's the largest deduction most professionals can access.
Best forPractices with long-term space needsPrimary leverEquity, depreciation & protection
Real estateOwn the building and lease it to the practice
Rent is deductible to the practice, depreciation shelters it in the LLC, and the building becomes a retirement asset separate from the practice. Self-rental and grouping rules determine how losses are treated.
Best forOwners within reach of $403,500 joint taxable incomePrimary lever20% deduction
QBIManage income around the SSTB threshold
Health, law, accounting, consulting, and similar fields lose the QBI deduction once taxable income passes the phase-in range. Pre-tax plan contributions are the most reliable way to stay below it.
Best forPartnerships and S corps in PTET statesPrimary leverFederal deduction
State taxElect pass-through entity tax (PTET)
The 2025 law left PTET workarounds intact. For partners in high-tax states, the federal benefit is often five figures per owner.
Best forMulti-owner practicesPrimary leverPayroll tax & plan design
StructureStructure partner compensation deliberately
Compensation formulas affect self-employment tax, retirement plan compensation, and QBI. Revisit them when adding partners or plans.
Best forS corps and partnerships with owner-paid expensesPrimary leverDeduction
ExpensesUse an accountable plan
Employees can't deduct unreimbursed business expenses, but an accountable plan lets the practice reimburse substantiated costs tax-free.
Best forOwners within 5–10 years of sellingPrimary leverCapital gain treatment
ExitPlan the practice sale years ahead
Personal goodwill sold by the owner can qualify for capital gain treatment, while gain on equipment is ordinary income to the extent of depreciation already taken. Private equity rollovers add their own deferral planning.
Best forConnecticut practices, especially in Fairfield CountyPrimary leverFederal deduction & state credits
ConnecticutPlan for Connecticut's PET and New York-source income
Connecticut's elective PET usually pays off when owners' SALT deductions are already capped. Owners who work in New York file there as nonresidents and take a Connecticut credit for the New York tax. A practice building brings conveyance tax, town mill rates, and a bonus depreciation add-back.