#tax-deductions
Maximize tax deductions and reduce your tax liability legally
A 2026 guide to the Pass-Through Entity Tax — how 36+ jurisdictions let S-corps and partnerships convert capped state income taxes into a fully deductible federal business expense, even after OBBBA raised the SALT cap to $40,400.
How Section 121 lets U.S. homeowners exclude up to $250,000 ($500,000 for joint filers) of capital gains on a primary home sale — covering the 24-month ownership and use tests, the two-year frequency rule, partial exclusions, depreciation recapture, and the nonqualified-use allocation.
OBBBA permanently restored the EBITDA-based ATI calculation for Section 163(j) starting in 2025, expanding deductible business interest for capital-intensive companies. A guide to the 30% cap, the ~$31M small business exemption, the 35% syndicate trap, EBIE allocations from partnerships, S-corp differences, and Form 8990 reporting.
Section 199A lets you deduct 20% of qualified REIT dividends, cutting the top federal rate to about 29.6%.
Section 280F caps first-year depreciation on passenger autos at $20,300 in 2026, but SUVs and trucks rated above 6,000 lbs GVWR escape those limits and can combine a $32,000 Section 179 deduction with 100% bonus depreciation. A practical guide to the 2026 numbers, the heavy-vehicle and pickup carve-outs, the 50% business-use cliff, and the mileage-log standards an IRS auditor expects.
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.
