#tax-deductions
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How short-term rentals sit outside the Section 469 passive loss rules, what the seven-day average and material participation tests actually require, and how a six-figure W-2 earner can use cost segregation and 100% bonus depreciation to legally offset wage income.
OBBBA made the 20% QBI deduction and 100% bonus depreciation permanent for 2026, while tariffs near 19% cost U.S. small businesses about $85 billion a year. Here is what changed, who benefits, and how to plan.
A 2026 comparison of donor-advised funds and private foundations covering AGI deduction limits, the 0.5% itemizer floor and 35% deduction cap from OBBBA, the 5% payout rule, self-dealing penalties, and why closely-held stock donated to a private foundation deducts at cost basis instead of fair market value.
Net operating losses generated after 2021 carry forward indefinitely but can offset only 80% of future taxable income. This guide covers the calculation, the Section 461(l) excess business loss limit, Form 1045 vs. 1040-X, and the bookkeeping practices that keep an NOL defensible years later.
Section 469 makes rental losses passive by default, so most cannot offset W-2 income. This guide covers the $25,000 special allowance and its $100k–$150k MAGI phase-out, the 750-hour and 50% real estate professional tests, the 1.469-9(g) aggregation election, audit-tested time-log practices, and how suspended losses unlock on disposition.
A cost segregation study reclassifies a building's components into shorter MACRS lives, unlocking the 100% bonus depreciation permanently restored by the One Big Beautiful Bill Act of July 2025. On a $1M residential rental, that swings first-year tax savings from roughly $10,700 to roughly $90,600—provided the investor clears IRC §469 passive activity loss limits.
Section 199A lets pass-through owners deduct up to 20% of qualified business income. This guide covers the 2026 thresholds, W-2 wage and UBIA limits, the SSTB trap, rental real estate safe harbor, the aggregation election, and the new $400 minimum deduction.
A walk through five tax-court rulings — Seacat's cat food, Wheir's body oil, ABBA's costumes, the Hess implants case, and Capone-style evasion — and the documentation, commingling, and "ordinary and necessary" rules they expose for small business owners.
Client meals are 50% deductible in 2026, client gifts cap at $25 per recipient (a limit unchanged since 1962), and employer-provided meals lose their deduction this year. A service-business guide to documenting meals, travel, gifts, and marketing while staying inside IRS rules.
A line-by-line guide to the deductions self-employed workers can claim in 2026, including the now-permanent 20% QBI deduction under OBBBA, $72,000 Solo 401(k) limits, the 72.5-cent IRS mileage rate, and the documentation rules that hold up under audit.
A practical week-by-week, quarter-by-quarter, and year-end tax preparation checklist for small business owners — covering 2026 IRS deadlines, estimated tax payments, deductions, 1099 filing, and the bookkeeping habits that turn April from a sprint into a routine handoff.
The OBBBA made the QBI deduction permanent and raised it to 23% in 2026, expanded SALT to $40,000 through 2029, and lifted the estate exemption to $15 million. Here is how small business owners running pass-through entities, S corps, and LLCs should plan around it.
