#tax-compliance
Stay compliant with tax regulations and filing requirements
For fiscal 2026 the IRS high-low per diem rates are $319/day (high-cost) and $225/day (standard), unchanged from the prior year. Per diem stays tax-free only under an accountable plan's three rules — business connection, substantiation within 60 days, and return of excess within 120 days.
Seventeen states run back-to-school sales tax holidays in summer 2026, from Florida's 32-day window to Iowa's Friday-Saturday weekend, each with its own price caps — $75 clothing in Ohio, $300 in Connecticut, $40 on Maryland backpacks. Participation is mandatory for most registered retailers, and destination sourcing means online sellers with nexus must honor the holiday of the delivery state.
The IRS normally has three years from the filing date to assess additional tax under IRC 6501(a), six years if you omit more than 25% of gross income, and unlimited time if you never filed or filed fraudulently. Parallel clocks run alongside it - 10 years to collect, 3 years to claim a refund, 4 years for employment tax records, and property basis until disposition plus 3 - which is why most CPAs tell small businesses to default financial records to six years.
Paint-and-sip and candle studios ring one ticket that is three revenue types, two tax treatments, and a deferred liability. Here is how to split ticket, beverage, and retail revenue at the POS, book gift cards and deposits as deferred revenue, and track pour cost so month-end takes 30 minutes.
Congress restored the federal 1099-K threshold to $20,000 and 200 transactions in July 2025, but nine states still require a form at $600 and four more sit between $1,000 and $2,500 — so a $650 Etsy sale produces a 1099-K in Massachusetts and nothing in Texas. Includes the state-by-state threshold tiers and how to reconcile a gross form total down to actual taxable profit.
Purchase-based cash back, points, and miles are non-taxable rebates that reduce your deductible expense — but referral bonuses, no-purchase sign-up bonuses, and bank account bonuses are taxable income reported on 1099-MISC, now only when $2,000 or more from one payer in 2026 under the One Big Beautiful Bill Act.
IRS Publication 15 (Circular E) sets the rules small employers must follow on every paycheck — federal income tax withholding via the wage-bracket or percentage method, 6.2% Social Security to the annual wage base, 1.45% Medicare plus 0.9% above $200,000, EFTPS deposits on a monthly or semiweekly schedule set by the $50,000 lookback test, and Forms 941, 940, W-2 and W-3. This guide translates each rule into what to do, when it is due, and which ledger account to book it in — including the failure-to-deposit penalty ladder of 2%, 5%, 10% and 15%.
Wind and solar had to begin construction by July 4, 2026 — but a facility placed in service by December 31, 2027 still qualifies for 45Y/48E, a vacated IRS notice restored the 5% safe harbor, and storage, geothermal, and fuel cells remain eligible through 2033.
DAC7 (Council Directive 2021/514) makes marketplaces report seller data to EU tax authorities by January 31 each year. For goods, you stay exempt only if you are under both 30 transactions and €2,000 on that platform for the calendar year — miss either prong and you are reportable, and ignoring the verification request lets the platform withhold payouts after two reminders and 60 days.
Product sent to a creator in exchange for promotion is taxable at fair market value under IRC Section 61 — a $400 PR box you review is $400 of Schedule C gross receipts, plus 15.3% self-employment tax on net profit. The 1099-NEC filing threshold rising from $600 to $2,000 changes only when a brand must issue a form, never whether you must report the income.
The IRS has no single seven-year rule. Income tax records run 3 years, employment tax records 4, substantial income omissions 6, bad-debt and worthless-security losses 7, and unfiled or fraudulent returns never expire — while property records run until the limitations period closes on the year you sell. This guide maps each clock to the documents it governs and gives a retention schedule small business owners can follow.
IRS Letter 6042C verifies a specific business return; Letter 5263C verifies the entity itself on file from Form SS-4, and both carry a 30-day response window that, if missed, stalls your returns, refunds, and overpayment applications. This guide explains how thieves obtain an EIN, the tax and non-tax red flags that signal fraud, exactly what to fax back in each case, when Form 8822-B is required within 60 days of a responsible-party change, and a monthly-quarterly-annual monitoring routine that catches misuse early.
