#finance
Finance
Essential finance concepts and practical insights for modern accounting
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.
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.
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.
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.
経済的付加価値（EVA）解説：資本コストを考慮した利益指標
経済的付加価値（EVA）= NOPAT − （WACC × 投下資本） — 負債と株式の両方を含むあらゆる資本源泉に市場金利を支払った後に残る利益。実例、NOPATとWACCの推定方法、ROIのパーセンテージバイアスを回避する理由、および中小企業経営者が資本意思決定に活用する方法を解説。
State Data Breach Notification Laws in 2026: A 50-State Compliance Playbook for Small Businesses
Every state requires breach notice and size doesn't exempt you — map the 30/45/60-day clocks, California SB 446's 30-day and 15-day AG rule, 500/1000 thresholds, risk-of-harm, and run on the shortest deadline.
Independent U-Pick Farm and Agritourism Bookkeeping: Schedule F vs Schedule C, Multi-Enterprise Tracking, Sales Tax, Weather Reserves, and the KPIs That Make a Season Pay
U-pick berries are farm income, admissions and donuts are not — split Schedule F and C, track per-enterprise contribution, tax admissions and prepared food, reconcile Square, and run on revenue per acre and per visitor.
Independent Voiceover Artist Bookkeeping and Taxes: Schedule C, Home Studio, Gear, Agent Commissions, Residuals and Multi-State Income, and the KPI That Explains Your Year
Every audition is unpaid labor — track per-job gross vs commission, pass exclusive-use for the home booth, expense gear via Section 179/bonus, allocate buyouts over usage, and run on revenue per audition.
独立系探偵事務所および張込調査会社の簿記：クライアント前受金と信託口座の取扱い、州免許と保証、ケース別原価計算、そして経営を安定させるKPI
前受金は繰延収益またはクライアント信託金—ケースごとに追跡し、時間、走行距離、前払い金を原価計算し、調査員を支配権に基づき分類し、実現率と回収費用の回収率で経営する。
Independent Private Music Teacher Bookkeeping (Piano, Guitar, Voice, Strings): Schedule C and Quarterly Estimated Taxes, Prepaid Lesson and Recital-Fee Deferred Revenue, Home Studio Deduction, Instrument and Equipment Section 179, and the New $2,000 1099-NEC Threshold Explained for Solo Instructors
Prepaid lessons are deferred revenue — track per student, pass the exclusive-use test for the home studio, expense instruments via Section 179/bonus, log mileage contemporaneously, and keep W-9s for the 1099-NEC threshold.