E-commerce CFO Services
Finance leadership for brands that sell online — across marketplaces, their own storefronts, and borders. A dedicated CFO, deliberately overseeing a limited number of engagements, who has run the numbers inside e-commerce businesses rather than advised them from the outside.
Why e-commerce finance is different.
Most accounting firms treat an online retailer like any other product company: revenue in, cost of goods out, margin in the middle. That model breaks the moment you sell on more than one channel, hold inventory in more than one warehouse, or ship to more than one tax jurisdiction. The economics of e-commerce live in the details — fees per order, cost per unit landed at the warehouse, the return rate on a specific product line — and those details rarely survive a standard chart of accounts.
We build finance functions that reflect how an e-commerce business actually makes or loses money, so that every decision about pricing, inventory, and channel mix is made with real numbers.
Finance leadership across the online retail landscape.
Every online business sells product for money, but the economics differ sharply by what is sold and where — return rates, inventory turns, margin structure, and regulatory burden are set by the category and the channel. We bring CFO leadership that already understands the mechanics of your vertical, not just the accounting.
Marketplace sellers (Amazon, Walmart, eBay and similar)
Businesses whose revenue runs primarily through third-party marketplaces. Referral fees, fulfillment fees, storage penalties, advertising costs, and settlement timing all sit between gross sales and cash. We build reporting that starts from the marketplace transaction data rather than the bank deposit, so margin by product and by account is known and defensible.
Direct-to-consumer brands
Brands selling on their own storefront with paid acquisition driving growth. Customer acquisition cost, payback period, repeat purchase rate, and contribution margin after advertising are the numbers that determine whether growth is worth funding. We build the cohort analysis and cash forecast that show whether the next dollar of ad spend returns.
Subscription and replenishment
Subscription boxes, auto-replenishment programs, and membership models. Deferred revenue, churn by cohort, lifetime value, and the inventory commitment implied by the subscriber base all need to be modeled together. We connect subscriber metrics to the financial statements so the two never tell different stories.
Fashion and apparel
High return rates, size and color depth that multiplies stock-keeping units, seasonal buys placed months before sale, and markdown risk at season end. We build return reserves by product, sell-through and markdown reporting, and inventory purchase planning that keeps cash from being stranded in last season's stock.
Beauty and personal care
Shelf-life-limited inventory, influencer and sampling costs, high advertising intensity, and regulatory requirements on labeling and claims. We track expiry-driven obsolescence, allocate marketing cost to the product lines it actually supports, and model the margin impact of promotions and bundles.
Consumer electronics and accessories
Fast product cycles, warranty and defect returns, price erosion after launch, and heavy exposure to import duties and supplier terms. We build landed-cost models by shipment, warranty reserves by product generation, and pricing analysis that accounts for the margin decline over a product's life.
Home, furniture and bulky goods
Freight cost is a margin driver, not a footnote. Dimensional-weight surcharges, damage rates, white-glove delivery, and return logistics on oversized items can erase the profit on an order. We put shipping and returns cost at the product level and audit carrier billing for overcharges.
Food, beverage and supplements
Perishable and dated inventory, cold-chain or temperature-controlled shipping, lot tracking, and category-specific compliance. We build inventory valuation that reflects expiry, allocate fulfillment and shipping cost by product, and model the working capital of production runs against sell-through.
Health and wellness products
Advertising restrictions on major platforms, payment processor scrutiny, subscription components, and claims regulation. We model customer acquisition under constrained channels, manage processor reserves and holdbacks on the balance sheet, and build reporting that satisfies both investors and compliance reviewers.
Business-to-business and wholesale online
Online wholesale portals and hybrid retail-plus-trade businesses. Net payment terms, volume pricing tiers, credit risk, and receivables replace the instant-settlement model of consumer sales. We build credit control, receivables aging, and margin reporting that separates trade and consumer channels cleanly.
Cross-border and international sellers
Selling into Canada, the United Kingdom, the European Union, or beyond. Foreign indirect tax registration, duties borne by seller or customer, multi-currency receipts, and marketplace fee schedules that differ by region. Our cross-border United States–Canada finance and tax background means each market gets its own margin analysis and compliance calendar.
Print-on-demand and dropshipping
Low inventory risk, thin margins, and total dependence on supplier and platform pricing. Contribution margin per order after supplier cost, platform fees, and advertising is the only number that matters, and it changes whenever a supplier or a platform changes terms. We track it continuously and model the effect of every fee change.
Don't see your category? The finance principles carry over; the category knowledge is what we bring on day one. Book a consultation →
The finance problems that define this industry.
Channel economics are hidden inside gross revenue
A marketplace order and a direct-to-consumer order can carry the same ticket price and produce completely different profit. Referral fees, fulfillment fees, storage fees, advertising fees, and payment processing costs vary by channel and by product category. Unless each of those is captured and allocated to the channel and the product that generated it, the income statement shows one blended margin — and blended margins hide the channel that is quietly losing money.
Landed cost is almost never fully captured
The cost of a unit is not what the supplier charged. It is the supplier price plus freight, duties, brokerage, insurance, inbound handling, and prep — all divided by the units that actually arrived in sellable condition. Businesses that book inventory at supplier cost and expense everything else as it comes in overstate gross margin and understate the real capital tied up on the shelf. Repricing decisions made on those numbers are wrong by definition.
Inventory is the balance sheet
For most online sellers, inventory is the single largest asset and the single largest use of cash. Overbuying strands cash in slow-moving stock and triggers storage penalties; underbuying loses the sale and the search ranking that came with it. Without a reliable count, a sound valuation method, and a disciplined reserve for obsolete and damaged goods, the balance sheet cannot be trusted and neither can the margin.
Returns and chargebacks are a cost of doing business, not a surprise
Return rates in some categories exceed 20 percent, and every return carries refund cost, return shipping, restocking labor, and often a unit that cannot be resold at full price. Chargebacks add processor fees and, past a threshold, penalties or account restrictions. These need to be estimated, reserved against, and reported by product — not discovered when the processor's settlement statement arrives.
Sales tax nexus follows the customer, not the seller
Since the 2018 Supreme Court decision in South Dakota v. Wayfair, a seller can owe sales tax in a state simply by exceeding a sales or transaction threshold there. Marketplace facilitator laws shift collection to the platform for marketplace sales but not for direct sales. The result is a patchwork of registration, collection, and filing obligations that changes as the business grows — and a liability that compounds silently if it is ignored.
Payment processor and marketplace settlements do not equal revenue
The deposit that lands in the bank is net of fees, refunds, reserves, and holdbacks, and often covers a settlement period that straddles the month end. Recording the deposit as revenue understates sales, understates expenses, and makes it impossible to reconcile what the platform reports against what the books say. Proper revenue recognition requires the gross transaction data, not the bank feed.
Growth consumes cash before it produces profit
An online brand growing 50 percent a year must buy inventory for next quarter's sales out of this quarter's cash, while paying for advertising today to acquire customers who may not become profitable for months. The business can be profitable on paper and out of cash in reality. Forecasting that cycle — purchase orders, supplier payment terms, sell-through, settlement timing, and advertising spend — is the core financial discipline of e-commerce.
Cross-border selling multiplies every problem above
Selling into Canada, the European Union, or the United Kingdom introduces foreign currency exposure, value-added tax and goods and services tax registration, import duties borne by either the seller or the customer, and marketplace fee structures that differ by region. Each market needs its own margin analysis and its own compliance calendar.
How we run finance in e-commerce.
Order-level data as the foundation
We integrate the marketplace and storefront transaction reports — not just the bank deposits — into the accounting system so that revenue, fees, refunds, and adjustments are recorded gross and reconciled to settlements. Every month closes with platform-reported sales tied to booked sales.
Contribution margin by channel and by product
We build a margin model that starts at gross sales and deducts every variable cost in sequence — discounts, refunds, platform fees, payment processing, fulfillment, shipping, and advertising — down to contribution margin per channel and per stock-keeping unit. This is the report that tells you where to invest and what to cut.
A landed-cost system that feeds inventory valuation
Freight, duty, brokerage, and inbound handling are captured by shipment and allocated to the units received, so inventory is carried at true cost and gross margin reflects reality. Slow-moving and obsolete stock is reserved for on a defined schedule, not written off in a year-end panic.
Inventory planning tied to the cash forecast
We model sell-through by product, reorder points, supplier lead times and payment terms, and the resulting purchase commitments — then connect that model to a rolling 13-week cash forecast that also carries advertising spend, settlement timing, payroll, and tax payments. Cash surprises become rare.
Sales tax and cross-border compliance on a calendar
We track economic nexus thresholds by state, manage registrations and filings (directly or through specialist software), separate marketplace-collected from seller-collected tax, and handle Canadian goods and services tax / harmonized sales tax and other foreign indirect tax obligations where the business sells abroad.
Management reporting that reads like an operator wrote it
A monthly package that covers channel performance, product contribution, inventory health (days on hand, aging, stranded stock), customer acquisition cost and payback, working capital, and a variance analysis against forecast — with the commentary written for the founder and the board, not for the auditor.
Systems that scale
We select and implement the accounting platform, inventory and order management tools, and reporting layer appropriate to the business's size, and we build the controls — approval workflows, reconciliations, segregation of duties — that lenders, investors, and acquirers will expect to see.
Key metrics we build and report.
The numbers that determine whether an online business is making money, and where.
| Metric | What it tells you |
|---|---|
| Contribution margin by channel | Profit after all variable costs for marketplace, direct, and wholesale channels separately |
| Contribution margin by SKU (stock-keeping unit) | Which products carry the business and which should be discontinued or repriced |
| Fully landed cost per unit | True inventory cost including freight, duty, brokerage, and handling |
| Gross margin after returns | Margin net of refund cost, return shipping, and unsellable returned units |
| Inventory days on hand, by SKU | Weeks of supply at current sell-through; flags overstock and stockout risk |
| Stranded and aged inventory | Units and dollars past a defined age threshold or unsellable at current location |
| Customer acquisition cost and payback period | Advertising spend per new customer and the months to recover it from contribution margin |
| Advertising cost of sales | Ad spend as a percentage of ad-attributed revenue, by channel and campaign |
| Return rate and chargeback rate | By product and channel, against reserve assumptions |
| Cash conversion cycle | Days from paying the supplier to collecting the settlement, the true working capital burden |
| Effective platform fee rate | All marketplace and processor fees as a percentage of gross sales, tracked monthly |
| Sales tax exposure by state | Sales against nexus thresholds and uncollected liability where registration is pending |
Where we've done this.
Our e-commerce experience comes from inside the businesses, not from a consulting deck. The founder of Zobov & Partners has held CFO-level responsibility in online retail and marketplace operations selling across the United States, Canada, and Europe, including:
- Multi-channel brands selling through major marketplaces alongside their own storefronts, where channel-level margin analysis changed the mix of where inventory and advertising dollars were placed
- Businesses scaling from low single-digit millions to well beyond $100 million in revenue, with the finance function rebuilt at each stage of growth
- Cross-border operations with inventory positioned in multiple countries, foreign currency receipts, and indirect tax obligations in several jurisdictions
- Operations with tightly integrated fulfillment and logistics, where carrier billing accuracy and shipping cost per order were treated as margin levers rather than overhead
- Founder-led companies preparing for outside investment or a sale, where inventory valuation, revenue recognition, and reporting had to withstand due diligence
We do not name clients. We can describe, in a conversation, how each of these situations was handled and what changed as a result.
Frequently asked questions.
When does an e-commerce company need a CFO?
Typically when one of three things happens: revenue passes roughly $5 million and the founder can no longer hold the numbers in their head; the business adds a second channel, a second warehouse, or a second country; or outside capital, a lender, or a potential acquirer starts asking questions the bookkeeper cannot answer. In each case, the cost of not having finance leadership shows up as stranded inventory, unexpected tax liability, or a valuation discount.
What is the difference between a dedicated CFO and a fractional CFO for an online business?
A fractional CFO typically serves many clients at once and works from summary reports. A dedicated CFO, as we practice it, oversees a small number of engagements so there is capacity to understand your order data, your supplier terms, and your marketplace fee structure in detail — the level at which e-commerce margin is actually determined.
Can you work with our existing bookkeeper and marketplace software?
Yes. We typically keep the bookkeeping function in place and add the structure above it: the chart of accounts and data integrations that make channel-level reporting possible, the close process, the forecasting model, and the management reporting. We work with the major accounting platforms and the common e-commerce integration and inventory tools.
How do you handle sales tax across multiple states?
We monitor sales against each state's economic nexus threshold, register where required, distinguish marketplace-collected tax from tax the business must collect directly, and manage filings — either in-house or by overseeing specialist sales tax software. Where there is historical exposure, we quantify it and advise on voluntary disclosure options before a state does it for you.
We sell into Canada. What changes?
Canadian sales bring goods and services tax / harmonized sales tax registration and remittance, import duties and brokerage on inventory moved into Canada, foreign currency receipts, and different marketplace fee schedules. Our cross-border United States–Canada finance and tax background means these are handled as part of the finance function rather than outsourced to a separate advisor.
What does the first 90 days look like?
Month one is diagnostic: reconcile platform data to the books, build the landed-cost and contribution margin models, and produce a baseline cash forecast. Month two delivers the first full monthly management package and closes any compliance gaps identified. Month three establishes the recurring rhythm — monthly close, reporting, forecast update, and a standing agenda with the founder or board.
Talk to a CFO who has run e-commerce finance.
If your margins look fine in total but you cannot say which channel or which product is producing them, that is where we start.
The information on this page is provided for general informational purposes only and does not constitute accounting, tax, or legal advice. Sales tax, indirect tax, and cross-border compliance obligations depend on the specific facts of your business and change frequently. Please consult a qualified professional regarding your situation. See our full Legal Disclaimer.