Stay below the threshold
Below the income threshold (about $191,950 single / $383,900 joint for 2024), all qualified businesses — including SSTBs — get the full 20%. Bunching deductions, accelerating depreciation, increasing retirement contributions, and timing income can pull taxable income below the threshold and preserve QBI for SSTBs.
Retirement contribution effect
A SEP-IRA contribution reduces both ordinary income and QBI dollar-for-dollar (because the contribution is allocable to the business). The QBI reduction offsets some of the contribution's tax benefit, but the dollars-saved math usually still favors the contribution because the 22%-32% income tax savings exceeds the loss of 20% on the contribution amount.
W-2 wages strategy
Above the threshold, the QBI deduction is limited to 50% of W-2 wages (or 25% of W-2 wages plus 2.5% of UBIA). Taxpayers who would have used independent contractors could consider hiring as W-2 employees to generate wages that uncap the QBI deduction. The cost of payroll taxes must outweigh the QBI benefit — usually only at significant scale.
UBIA strategy
For capital-intensive businesses (rental real estate, manufacturing), the 2.5% UBIA prong of the W-2/UBIA test can preserve QBI even with few employees. UBIA is the unadjusted basis (cost) of qualifying property within its 10-year-or-recovery-period window. Buying additional qualifying property can directly increase the QBI cap.
SSTB phase-out math
Once an SSTB owner is in the SSTB phase-out range ($191,950 to $241,950 single, doubled joint, for 2024), each dollar of additional taxable income reduces QBI rapidly. The marginal tax cost of additional income can exceed 50% in this range — making any deduction or income deferral disproportionately valuable.
Common mistakes worth avoiding
The recurring mistakes filers make on this topic cluster in three patterns: (1) optimizing for current-year tax at the expense of multi-year tax, (2) treating the choice as binary when the IRS framework actually allows nuance (partial elections, hybrid methods, year-by-year reassessments), and (3) deferring the analysis until the return is due rather than running it during the year when the result can still influence behavior. A short annual review — even thirty minutes — catches all three failure modes and replaces vague intuition with documented reasoning.