Business Deduction Strategies

The strategies that actually work at high income fall into several distinct categories. Most high-income business owners use a combination tailored to their specific situation.

Strategy 1. Optimize Your Entity Structure

The entity structure you operate through affects how your income is taxed. The same business activity can produce dramatically different tax outcomes depending on whether you operate as a sole proprietor, partnership, S corporation, or C corporation.

For high-income service businesses, the S corporation election is often the single biggest tax decision. S corp owners receive a reasonable salary (subject to payroll tax) plus distributions of remaining profits (not subject to self-employment tax). For a business owner earning $400,000 in net income, the savings from paying self-employment tax only on a $150,000 salary (rather than the full $400,000) can exceed $9,000 per year.

For very high earners with significant retained earnings, a C corporation can sometimes make sense despite the double-taxation concern. The flat 21 percent corporate rate combined with the ability to retain earnings for reinvestment can produce favorable outcomes in specific situations. This is a complex decision that benefits from professional analysis.

For real estate or investment activity, partnership or LLC structures typically work better than S corp structures because of the flexibility around basis, allocations, and special elections.

The right entity is rarely the same forever. Many successful business owners restructure their entities at different stages of business growth to optimize for their current situation.

Strategy 2. Maximize Retirement Plan Contributions

For high-income business owners, retirement plan contributions are often the single largest deduction category available. The numbers are substantially more generous than most W-2 employees realize.

Solo 401(k): For 2026, an individual business owner can contribute up to $23,500 as an employee deferral, plus an additional $7,500 catch-up contribution if age 50 or over. The business can then contribute up to 25 percent of compensation (for incorporated businesses) or approximately 20 percent of net self-employment income (for unincorporated businesses) as an employer contribution. Combined annual contribution limits in 2026 reach $70,000 ($77,500 for those 50 and over), and in some cases higher.

SEP-IRA: A simpler alternative for business owners without employees. Contribution limit is the lesser of 25 percent of compensation or $70,000 in 2026.

Defined Benefit Pension Plans: For high-income business owners (typically $300,000+ per year) approaching retirement, a defined benefit plan can allow contributions of $200,000 to $400,000+ per year, dramatically exceeding what defined contribution plans permit. These plans require professional administration and a multi-year commitment, but they produce some of the largest single-strategy deductions available to business owners.

Cash Balance Plans: A hybrid between traditional pension plans and 401(k) plans. Particularly popular among professional service firms and high-income business owners. Contribution levels are based on the participant’s age, often allowing contributions in the $100,000 to $300,000 range.

For a high-income business owner who has not yet maxed out retirement plan deductions, this is almost always the first area to explore.

Strategy 3. Employ Family Members

Paying family members for legitimate work in the business shifts income from the business owner’s high tax bracket to the family member’s potentially lower bracket. The strategy works particularly well with:

Children under 18: Wages paid to children of the business owner (in a sole proprietorship or single-member LLC) are exempt from Social Security and Medicare taxes. The child’s first $14,600 in earned income falls within the standard deduction in 2026, making it federally tax-free. The work performed must be legitimate, age-appropriate, and properly documented.

Spouses: Hiring a spouse can shift income, create eligibility for additional retirement plan contributions in the spouse’s name, and produce other benefits. The work must be real and the compensation reasonable.

Adult children: Hiring adult children at lower tax brackets shifts income while supporting their financial independence. Particularly useful for college-age or recent-graduate family members.

Family employment is a legitimate strategy when done correctly and an audit risk when done sloppily. Time logs, job descriptions, and reasonable compensation are essential.

Strategy 4. Use an Accountable Plan for Reimbursements

An accountable plan is an IRS-recognized arrangement under Treasury Regulation 1.62-2 that lets a business reimburse owners and employees for legitimate business expenses without those reimbursements being treated as taxable income. For S corp owners particularly, an accountable plan converts personal expenses paid for business purposes into deductible business expenses.

Common categories of accountable plan reimbursements:

• Home office: A pro rata share of home expenses (rent, mortgage interest, utilities, insurance, depreciation) based on the business-use square footage
• Personal vehicle: Mileage at the IRS standard rate, or actual expenses with proper documentation
• Cell phone and internet: Business-use percentage of personal communications expenses
• Travel and meals: Business-related travel expenses with proper documentation

For an S corp owner who would otherwise lose the home office deduction (which is generally not available to S corp shareholder-employees as an itemized deduction), an accountable plan recovers the full benefit and converts it into a business deduction.

Strategy 5. Maximize the Qualified Business Income (QBI) Deduction

Under IRC Section 199A, pass-through business owners may be able to deduct up to 20 percent of their qualified business income, subject to various limitations and phase-outs. For high-income service business owners (“specified service trades or businesses” or SSTBs), the deduction phases out above $241,950 (single) or $483,900 (married filing jointly) in 2026.

For non-SSTB businesses, the deduction continues to be available above the phase-out threshold but is subject to W-2 wages and qualified property limitations. The mechanics of QBI optimization can involve:

• Adjusting compensation between owner salary and pass-through distributions
• Increasing W-2 wages to satisfy the wage limitation test
• Acquiring qualified property to satisfy the property limitation test
• Aggregating businesses to optimize the calculation across multiple entities

The OBBBA preserved the QBI deduction and made it permanent. For business owners in qualifying activities, capturing the maximum allowable QBI deduction can produce 7 to 8 percent reductions in effective tax rate.

Strategy 6. Strategic Timing of Income and Expenses

Cash-basis business owners have considerable flexibility around when income is recognized and when expenses are deducted. Timing strategies can substantially affect the current year’s tax bill:

Accelerate deductible expenses before year-end by prepaying legitimate business expenses, purchasing necessary supplies, or paying bonuses to employees in December rather than January

Defer income by delaying year-end billing, pushing collections into the following year, or structuring receivables to fall outside the current tax year

Stack deductions in high-income years by combining multiple discretionary expenditures (equipment purchases, retirement contributions, charitable giving) in years when the marginal value is highest

Spread income across years when possible, particularly when a one-time event (business sale, large project completion, asset disposition) would push you into a higher bracket

Timing strategies are most powerful when integrated into broader planning rather than executed reactively in December.

Strategy 7. Self-Insured Health Reimbursement Arrangements (HRAs)

For S corp owners and certain other business structures, properly structured Health Reimbursement Arrangements can convert personal medical expenses into deductible business expenses. The rules are technical, vary by entity type, and have specific requirements around employee coverage if non-owner employees exist, but they can produce meaningful tax savings for business owners with significant medical expenses.

Strategy 8. Coordinated Equipment and Property Acquisitions

The interaction between Section 179, bonus depreciation, and broader business deduction planning creates opportunities that any single strategy alone cannot match. Acquiring equipment, property, or vehicles in coordination with retirement plan contributions, family employment timing, and entity-level decisions can produce substantially better outcomes than any of these strategies executed in isolation.

See our pages on bonus depreciation strategies and Section 179 deductions for the deeper coverage on these specific tools.