Online businesses have analog tax problems.

The tax and financial quirks

• Wayfair created economic nexus thresholds in almost every state. The 2018 South Dakota v. Wayfair decision gave states the power to require sales tax collection from remote sellers based on economic activity rather than physical presence. The most common threshold is $100,000 in annual sales; a shrinking set of states still layer on a 200-transaction test, and a growing number have repealed it. A Shopify store doing $2M across all fifty states may be obligated to register, collect, and file in thirty-plus jurisdictions. We build the nexus matrix, current to each state's rules, before we recommend registrations.
• Marketplace facilitator laws shift the collection obligation, but not the filing one. Amazon, eBay, Etsy, and other marketplaces are required in most states to collect and remit sales tax on transactions through their platforms. That removes a burden, but it does not remove the underlying filing obligation in states where the seller has nexus for direct sales through their own site. A DTC brand selling 60 percent on Amazon and 40 percent on Shopify still has to file in any state where total activity crosses the threshold.
• Inventory accounting method is a real choice with real consequences. FIFO (first-in, first-out), weighted average, and specific identification each produce different cost of goods sold in an inflationary environment. A DTC brand with $3M in ending inventory and 8 percent annual price increases will report materially different taxable income under each method. The method has to be elected on the first return and is then locked without IRS consent to change.
• Section 263A UNICAP applies to most e-commerce businesses. Businesses with average annual gross receipts above $32M (the 2026 small business exception threshold, inflation-adjusted each year) must capitalize certain indirect costs into inventory under the Uniform Capitalization rules. Below the threshold, the small business exception applies. Many e-commerce businesses crossing the threshold for the first time are not told they now have a compliance obligation that was not there last year.
• Multi-state income tax nexus is not the same as sales tax nexus. A seller with sales tax nexus in thirty states may have income tax nexus in only three, depending on property, payroll, and protected activity. The compliance posture for each is separate. A firm that assumes they are the same is going to register in places the seller does not belong and miss places the seller does.
• Platform settlement reports do not map one-to-one to revenue. A Shopify payout of $48,500 for a week of sales does not equal $48,500 of revenue. It includes refunds, chargebacks, processing fees, tips, sales tax remitted, and in some cases marketplace facilitator tax. Booking the payout as revenue without reconciling the underlying gross, fees, and refunds produces a P&L that is structurally wrong.

How we engage e-commerce operators

Most e-commerce operators start with tax strategy and preparation. From there, engagements deepen based on the complexity of the business: quarterly advisory for year-round strategy, embedded fractional CFO for multi-entity or growth-stage operations, entity restructuring when the business crosses natural thresholds. The engagement matches the need, not a template.

Where AI comes in

Inventory forecasting is the single highest-impact AI use case for a DTC brand today. A model that pulls historical sales, platform-reported velocity, and seasonality can produce a 30-to-60-day SKU-level demand forecast that beats a manual Excel model by a wide margin. Customer service triage and draft-response generation is a second. Automated operational reporting, especially for multi-SKU multi-channel operators, is a third.

The AI uses we do not yet recommend are the ones that touch pricing decisions or live customer-facing voice.

Who this fits

DTC brands with $1M to $25M in annual gross merchandise value. Multi-channel operators selling on Shopify, Amazon, and occasionally owned retail. Brands with physical inventory (not print-on-demand or dropship). Founders who have outgrown the bookkeeper on Fiverr but are not yet ready for an in-house VP Finance.

First engagement

A free call to understand the platform mix and current sales tax posture. We review the most recent return, the current platform settlement reports, and the inventory on hand. If we are the right firm, we scope the engagement starting with a sales tax nexus matrix, an inventory method review, and a current-year projection. Monthly close work begins in the onboarding and continues from there.

The moment an e-commerce brand crosses $1M in revenue, the number of small tax decisions that compound into real dollars triples. The firm that catches them all is the firm that pays for itself in year one.