#multi-state-tax
Multi-state tax compliance, nexus rules, and withholding requirements for businesses operating across state lines
A 2026 guide to U.S. sales tax economic nexus — how the $100,000 threshold works after Wayfair, which states still count transactions, how marketplace facilitator laws affect your nexus math, and what to do when you should have registered months ago.
Washington's B&O tax is a gross receipts tax with major 2026 changes — a $2 million economic nexus threshold, tiered service rates from 1.5% to 2.1%, and a $2M standard deduction. This guide breaks down activity-based classifications, market-based sourcing, penalty math that can exceed 39%, and the bookkeeping practices that keep multistate sellers audit-ready.
How NIL endorsements, collective payouts, and House v. NCAA revenue sharing are taxed in 2026—Schedule C mechanics, the 15.3% self-employment tax, multi-state jock-tax filings, and the planning moves that keep April manageable for college athletes and their families.
By 2026, sales tax on SaaS and digital goods splits into three legal routes—tangible property, taxable service, or nontaxable intangible—plus a true-object test that turns on customer intent. This guide covers the 2026 Illinois, Maine, and D.C. changes, economic nexus thresholds, and when a voluntary disclosure agreement beats direct registration.
Sixteen US jurisdictions run mandatory paid family and medical leave programs in 2026, with new benefits live in Minnesota, Maine, and Delaware, a 23% Washington premium hike to 1.13%, and a permanent Section 45S federal credit. This guide covers which states require withholding, how private plan exemptions work, how PFML coordinates with FMLA and ADA, and the W-2 Box 14 codes that break payroll when miscoded.
A practical breakdown of how travel nurses keep housing and meal stipends tax-free — covering the IRS tax home rule, the 12-month assignment cliff, duplicate-expense documentation, multi-state nonresident returns, and which states have reciprocity agreements.
How U.S. states divide multistate corporate income using single sales factor, three-factor, and market-based sourcing rules — including throwback and throwout traps, P.L. 86-272 limits, and the bookkeeping detail required to file accurately.
A guide to state corporate income tax apportionment in 2026 — why 34 of 44 corporate-tax states now use single sales factor, how market-based sourcing rules in California, Kansas, and Arkansas shift SaaS and service company tax bills toward customer location, and five strategies to manage the exposure.
Drop shipping treats one shipment as two sales for tax purposes, and depending on nexus, resale certificate rules, and marketplace facilitator laws, an ecommerce operator can owe tax in states they never set foot in. A 2026 field guide to who actually collects, the ten strict resale states, and the nexus thresholds — including transaction-trigger drops — that decide your exposure.
Marketplaces like Amazon, Etsy, and Shopify collect sales tax for you, but registration, zero returns, and economic nexus tracking are still your responsibility. A 2026 compliance routine for multi-channel sellers, with state thresholds and the six mistakes that trigger penalties.
A 2026 guide to the Pass-Through Entity Tax — how 36+ jurisdictions let S-corps and partnerships convert capped state income taxes into a fully deductible federal business expense, even after OBBBA raised the SALT cap to $40,400.
How state income tax really works for remote employees who cross state lines: the convenience-of-the-employer rule used by seven states (including New York), which reciprocity agreements eliminate double taxation, day-counting evidence auditors accept, and the bookkeeping habits that keep multi-state returns predictable.
