Life After Section 321: How Small E-Commerce Importers Are Rebuilding Landed Cost, Pricing, and Cash Flow in 2026
A practical guide for Shopify and Amazon FBA sellers on rebuilding landed cost, pricing, and bookkeeping after the May and August 2025 suspensions of the Section 321 de minimis exemption, with line-by-line duty math, entry-type tradeoffs, and cash-flow tactics.
State EPR Packaging Laws Are Now a P&L Line Item: The 2026 Compliance Playbook for CPG Brands, Shopify Sellers, and Amazon FBA Operators
Six U.S. states now enforce Extended Producer Responsibility laws for packaging, with fee invoices arriving in 2025 and 2026. Here is how California SB 54, Oregon's Recycling Modernization Act, and Colorado's HB22-1355 reshape CPG brand P&L, plus the SKU-level bill of materials, ship-to-state allocation, and inventoriable vs. SG&A accounting treatment required for clean 2026 filings.
Sales Tax Holidays 2026: A Multi-Channel Retailer's Compliance and POS Configuration Guide
Twenty-one US states run sales tax holidays in 2026, with seven converging on August 7–9. Here is how Shopify, Amazon, Walmart, and Etsy sellers should configure product taxability, plan inventory, and avoid the per-item cap, bundled-sale, and excluded-venue mistakes that drive audit losses.
Economic Nexus and Sales Tax: A 2026 Guide for Online Sellers
Economic nexus requires out-of-state sellers to collect sales tax once they cross a state's threshold — commonly $100,000 in sales. As of January 1, 2026, 16 states have dropped the 200-transaction trigger, and this guide explains the thresholds, marketplace facilitator traps, and a quarterly compliance routine.
E-Commerce Inventory Accounting With 3PLs and Multi-Channel Fulfillment
How online sellers allocate landed costs across SKUs, track FBA reserved inventory across fulfillment centers, reconcile marketplace settlements line by line, and prevent phantom COGS adjustments at year-end across 3PLs and multi-channel fulfillment.
E-Commerce Inventory Accounting With 3PLs and Multi-Channel Fulfillment: How Online Sellers Allocate Landed Costs, Track FBA Reserved Inventory, Reconcile Marketplace Settlements, and Avoid Phantom COGS at Year-End
Multi-channel sellers routinely lose 22 margin points to phantom COGS — unallocated landed costs, FBA reserved inventory, and netted marketplace settlements posted as revenue. A four-step playbook to keep e-commerce books honest from supplier invoice to year-end true-up.
Drop Shipping Sales Tax in 2026: Three-Party Transactions, Resale Certificates, and Marketplace Facilitators
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.
Marketplace Facilitator Laws in 2026: Why Amazon, Etsy, and Shopify Sellers Still Owe Sales Tax Filings
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.
Sales Tax Nexus: The Complete Guide for Multi-State Sellers
How sales tax nexus works in 2026 — the $100,000 / 200-transaction thresholds, marketplace facilitator laws, and the six ways small businesses accidentally trigger multi-state tax obligations.
Bookkeeping for Amazon Sellers: The Complete Guide
A practical guide to Amazon FBA bookkeeping—covering settlement report reconciliation, FBA fee deductions, COGS calculation, multi-state sales tax nexus, inventory tracking, and quarterly estimated taxes.
Amazon Seller Taxes: A Complete Guide for Online Sellers
Amazon FBA sellers face sales tax nexus in 26+ states, 15.3% self-employment tax on profits, and a 1099-K that overstates income. This guide covers filing obligations, deductible expenses, and recordkeeping practices to stay compliant year-round.
Amazon Seller Fees (2025): What They Are—and How to Book Them in Beancount
Navigate the complexities of Amazon's 2025 seller fees with this comprehensive guide, detailing how to accurately record and manage these costs using Beancount's plaintext accounting system.