Tax Strategy for Attorneys and Law Firm Partners

Law firm taxation splits along a line that most other professions do not have. A solo or small firm owner controls entity choice, compensation, and plan design. An equity partner at a mid-size or large firm controls almost none of that and receives a K-1 with guaranteed payments already determined by the partnership agreement.

Entity Structure

A solo attorney or small firm operating as a sole proprietorship or a partnership pays self-employment tax on the full profit. Electing S corporation treatment stops that above a reasonable salary. On a firm producing $500,000 of profit with a $220,000 salary, the $280,000 distributed avoids roughly $10,600 of Medicare tax annually.

Reasonable Compensation

For an S corporation firm, salary should reflect what the market would pay an employed attorney of comparable experience to do the legal work performed, separated from the return on owning the firm: the associates, the staff leverage, the case inventory, and the referral network.

Retirement Plans and Contingency Fee Timing

Retirement plans are the single largest deduction available to a high-earning attorney. A 401(k) with profit sharing reaches roughly $72,000 in 2026. A cash balance plan added on top allows $100,000 to $250,000 depending on age.

Contingency fee firms have a specific opportunity here. A large settlement year produces income concentration that a cash balance plan can partially absorb, though cash balance plans require reasonably consistent funding across years and are not a one-year tool. Firms with genuinely unpredictable income sometimes prefer a large profit sharing contribution in strong years, which is fully discretionary, over a defined benefit commitment. Our defined benefit versus 401(k) comparison covers the tradeoff.

Accountable Plan

A written accountable plan under Treas. Reg. Sec. 1.62-2 lets an S corporation firm reimburse the attorney for a home office used for case preparation, bar dues and licensing across multiple jurisdictions, CLE and related travel, legal research subscriptions, professional liability coverage where personally paid, and vehicle use for court appearances, depositions, and client meetings.

Travel from the office to a courthouse or client site is business mileage. For a litigator, that is frequently $6,000 to $12,000 annually. None of it is deductible personally without the plan. See our accountable plan guide.

The Augusta Rule

IRC Sec. 280A(g) permits the firm to rent an attorney's residence for up to fourteen days per year, deducting the rent while the attorney excludes it from income.

Partner meetings, annual firm planning, and case strategy sessions are legitimate uses. The documentation standard is the same as for any related-party transaction: comparable venue quotes to support the rate, a signed rental agreement, an agenda, and an attendance record for each date. At $1,500 per day for fourteen days, that is $21,000. See our Augusta Rule article.

Real Estate and Cost Segregation

Attorneys who own their office building should hold it in a separate LLC leasing to the firm. Office buildings reclassify less aggressively than medical or industrial property, typically 20% to 28% of depreciable basis, because the component mix is lighter. On a $2,000,000 building with $1,600,000 of depreciable basis, a 25% reclassification still produces $400,000 of first-year deduction under 100% bonus depreciation.

Self-rental rules under Treas. Reg. Sec. 1.469-2(f)(6) mean the loss offsets firm income rather than outside passive income. Attorneys who do not own an office and want deductions against W-2 or K-1 income more often use short-term rentals, where material participation for more than 100 hours and more than anyone else makes the loss non-passive. Our commercial cost segregation guide and passive loss guide cover both paths.

QBI: Law Is an SSTB

Law is specifically listed as a specified service trade or business in IRC Sec. 199A(d)(2), so the 20% qualified business income deduction phases out above the income thresholds. OBBBA made Sec. 199A permanent and widened the phase-in range beginning in 2026, which helps attorneys near the threshold and does nothing at partner income levels.

An attorney with taxable income modestly above the threshold should model whether a cash balance contribution plus a cost segregation study can bring taxable income under it, because the deduction reappears in full below the range. That swing is often worth $30,000 or more and is the single most valuable calculation to run for attorneys in the $450,000 to $550,000 band.

Above that range, accept that QBI is gone and concentrate on deferral, real estate, and charitable timing instead. Our Section 199A overview explains the thresholds.

Frequently Asked Questions

Should a solo attorney elect S corporation status?

Usually yes above roughly $150,000 of profit. The election removes self-employment tax on profit distributed above a reasonable salary. On a firm with $500,000 of profit and a $220,000 salary, the savings run about $10,600 per year in Medicare tax.

Can a law firm partner reduce self-employment tax on guaranteed payments?

Generally not directly. Guaranteed payments for services are subject to self-employment tax in full. Some firms permit a partner to hold the interest through an S corporation, which can change the result, but most partnership agreements prohibit it.

Do attorneys qualify for the QBI deduction?

Only below the income thresholds. Law is expressly a specified service trade or business under IRC Sec. 199A(d)(2). Attorneys with taxable income modestly above the threshold should model whether retirement contributions and depreciation can bring them under it, because the deduction returns in full.

How should a contingency fee firm set owner salary?

Set a stable salary against market rates for employed attorneys of comparable experience and let the income variance flow through distributions. Swinging salary with settlement timing creates both payroll tax cost in big years and defensibility problems in lean ones.

What does cost segregation produce on a law office building?

Typically 20% to 28% of depreciable basis, lower than medical or industrial property because office component mix is lighter. On $1,600,000 of basis, a 25% reclassification is $400,000 deductible in year one under 100% bonus depreciation.

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