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Business
Business finance strategies and accounting best practices for success
Bad Debt and Uncollectible Receivables: When to Write Off, How to Prove Worthlessness Under Section 166, and Why Cash-Basis Businesses Can't Deduct Unpaid Invoices
An unpaid invoice isn't automatically a deduction for cash-basis businesses and worthlessness must be proven in the year claimed — document business character, collection efforts, and the specific charge-off before December 31.
Health Insurance Deduction for Self-Employed in 2026: How Schedule 1 Above-the-Line, ICHRA, and QSEHRA Interact With the Premium Tax Credit
Deduct premiums on Schedule 1, get reimbursed via ICHRA/QSEHRA, or take the premium tax credit — never two for the same dollar. Master the month-by-month coordination and circular math that prevents double benefits.
Sales Tax Nexus in 2026: Economic Nexus Thresholds by State and the $100K / 200-Transaction Trap After Wayfair
The $100K-or-200 shorthand is wrong in most states in 2026 — many repealed the transaction test and three big states use $500K. Track gross by state and channel before the notice does.
1099-K Threshold for 2026: Why Gig Workers and Online Sellers Still Get a Form at $600 in Most States Even After the Federal $5,000 Patch
Federal relief says $5,000 but most states still require $600 — a form in the mailbox may be state-driven. Reconcile per-TPSO gross to taxable income and don't pay tax on mis-coded reimbursements.
QDOT規則、書き換えられる: 財務省規則10050が非市民配偶者を持つ事業主にもたらす意味
2026年7月10日発効の財務省規則10050は、適格国内信託(QDOT)規則にとって30年ぶりとなる大幅な更新をもたらす。無制限配偶者控除がなぜ非市民配偶者を除外するのか、QDOTが何を要求するのか——米国人受託者、Form 706での積極的な選択、そして200万ドルを超える信託への保証——、そして新規則が事業主の遺産のために行う4つの手続き上の修正とは何かを解説する。
SEP IRA vs. Solo 401(k) vs. SIMPLE IRA in 2026: Contribution Limits, Deadlines, and the Tax Math for Solo Owners With and Without Employees
Solo owner with $140K profit can do $28K SEP, $35K Solo 401(k), or $16K SIMPLE — same profit, different deductions. Match the plan to employees, profit, and whether you need the deduction by December 31 or April 15.
FDAの新しい「ヘルシー」表示ルール:食品事業者が2028年2月25日までに対応すべきこと
FDAが改定した「ヘルシー」の定義は2028年2月25日から義務化される:製品は食品グループから意味のある量を含み、かつ1食あたり飽和脂肪10%DV未満、ナトリウム15%DV未満、添加糖類10%DV未満に収める必要がある。誰が新たに対象となり、誰が対象から外れるのか、コンプライアンスにかかる費用（表示更新でUPCあたり約20ドル、レシピ再処方で1件あたり約100万ドル）、そして中小食品事業者向けの実践的なタイムラインを解説する。
The QBI Deduction Cliff in 2026: What Happens When Section 199A Expires and How Pass-Through Owners Model Life After the 20% Deduction
199A's 20% QBI deduction sunsets after 2025 as written — model the cliff by your actual capped deduction and marginal rate, revisit salary and retirement timing, and track W-2/UBIA for a retroactive extension.
Cost Segregation for Small Commercial Property in 2026: How a $400K Building Can Generate $80K of Front-Loaded Depreciation Without a Full Engineering Study
A small building's first-year deduction can triple with cost segregation — reclassify 5-year, 7-year, and 15-year pieces, elect Section 179/bonus where it helps, and document the allocation the ATG expects.
Section 174 R&D Capitalization in 2026: Why Small Businesses Must Amortize Research Costs Over 5 Years and How OBBBA's Retroactive Fix Changes the Math
Since 2022 research costs must be capitalized over 5 years — software included — midpoint in year one. Track domestic vs foreign, build the amortization schedule, and be ready for OBBBA's retroactive expensing.
フリートテレマティクスのROI：中小規模のフリートオーナーが計算すべきGPS追跡の採算性
車両10台のサービスフリートがGPS追跡に年間約$1,000を費やすと、燃料費・人件費・保険料で通常$15,000〜$30,000の節約を回収でき、多くの導入企業は7〜12か月以内にROIがプラスに転じる。
Independent Mobile Auto Detailing and Ceramic Coating Business Bookkeeping: Per-Job Pricing, Chemical Inventory, Van and Equipment, Warranty Deferred Revenue, and the KPIs That Hit 40–55%
Detailing margins live per job — price per ticket, cost chemicals per job, expense the van via Section 179/bonus, defer coating warranty revenue, and run on revenue per job and net margin after owner labor.