#tax-deductions
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How the IRS Section 183 nine-factor test decides whether your side activity's losses are deductible in 2026, what the three-of-five safe harbor really means, and what 2025's Young v. Commissioner reveals about the records that win in Tax Court.
An IRS-compliant accountable plan lets S-Corp owners reimburse home office, 72.5¢/mile, internet, and travel tax-free, converting personal spending into
US OBBBA's 0.5% AGI floor and 35% cap hit in 2026 — how donor-advised fund bunching still clears the federal charitable hurdle.
The One Big Beautiful Bill Act's Section 174A restores immediate domestic R&D expensing starting in 2025, and small businesses under roughly $31 million in average gross receipts have until July 6, 2026 to amend 2022, 2023, and 2024 returns to recover taxes paid under the TCJA capitalization rules.
A 2026 decision guide for small businesses choosing between Section 179's $2.56M cap and OBBBA's permanent 100% bonus depreciation, with order-of-operations rules, hybrid examples, and state-conformity caveats.
The Augusta Rule (26 USC § 280A(g)) lets you rent your home to your business for up to 14 days a year and exclude the rent from federal income tax.
How the 2026 Health Savings Account combines tax-free contributions, tax-free growth, and tax-free medical withdrawals — and how the shoebox strategy turns an $8,750 family limit into a six- to seven-figure retirement vehicle by age 65.
Section 183 of the Internal Revenue Code denies loss deductions for activities not engaged in for profit. The IRS applies a nine-factor test and a three-of-five-years safe harbor (two of seven for horses) to distinguish a real business from a hobby — here is what each factor weighs and how to document profit motive before an audit.
U.S. cash balance pension plans let solo doctors, attorneys, and consultants deduct $100,000–$370,000 a year on top of a Solo 401(k). 2026 contribution limits, a worked example for a 54-year-old physician, and the actuarial commitments to weigh before signing.
US de minimis safe harbor (Treas. Reg. 1.263(a)-1(f)) lets businesses expense tangible property up to $2,500 per item on the federal return.
Section 461(l) caps 2026 excess business losses at $128,000 single and $256,000 joint, per the OBBBA. Pass-through owners use Form 461 to report the limitation.
An Individual Coverage HRA lets small employers reimburse workers tax-free for individual ACA plans with no contribution cap, 11 employee classes, and a 9.96% affordability threshold for 2026. Here is how the mechanics, tax treatment, bookkeeping, and 90-day rollout actually work.
