#business
Underpayment interest is daily and quarterly — hit the 100%/110% or 90% harbor and pay the right amount by April 15, June 15, September 15, and January 15, or use Schedule AI for seasonal income before Form 2210 bills you.
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.
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.
The $100K-or-200 shorthand is wrong in most states in 2026 — many repealed the transaction test and three big states use $500K.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.
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.
财政部第10050号决议已于2026年7月10日生效，这是三十年来对合格境内信托（QDOT）法规首次实质性更新。本文解释为何无限婚姻扣除将非公民配偶排除在外、QDOT具体要求哪些条件——美国受托人、在706表上主动作出选择，以及信托资产超过200万美元时的担保要求——以及新规为企业主的遗产做出的四项程序性修正。
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对“健康”一词的新定义将于2028年2月25日起强制生效:产品必须来自某个食物类别并提供有意义的含量,且每份中饱和脂肪不超过每日参考值(DV)的10%、钠不超过15%、添加糖不超过10%。本文梳理哪些产品将获得资格、哪些会失去资格、合规成本大致是多少(每个UPC约20美元的标签更新费用,每个配方约100万美元的重新配方费用),并为小型食品企业提供一份切实可行的时间表。
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.
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.
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.
一支拥有10辆车的服务车队每年花费约1000美元用于GPS追踪，通常能在燃油、人工和保险方面节省15,000至30,000美元，大多数使用者能在7到12个月内实现正回报。
