E-Commerce Accounting & CFO
Your Shopify dashboard says you're profitable. Your bank account disagrees.
Most e-commerce brands have never calculated true COGS, and every pricing and inventory decision is built on a wrong number. Northstar runs the finance function for DTC brands so you operate on real margins, not Shopify vanity metrics.
E-commerce finance moves at the speed of your ad spend. Most accountants can't keep up.
I don't know my true cost per unit.
You calculate margin on product cost alone, ignoring freight, duties, packaging, fulfillment, and returns. You think you're at 65% gross margin when the real number is closer to 42%.
Sales tax is a ticking time bomb.
You're selling in 30+ states, registered in 4, and your Shopify tax settings are a guess. The risk compounds every day you ignore nexus obligations.
Scaling ad spend but bleeding cash.
ROAS looks great in the dashboard, but contribution margin tells a different story once you factor in returns, true COGS, and processing fees. You're optimizing for a vanity metric.
Inventory is eating all my cash.
You ordered six months of stock on an optimistic forecast and now $200K sits on shelves while your best seller is out of stock. Without financial modeling, inventory becomes a silent cash killer.
What your finance team looks like with Northstar.
We deploy a dedicated finance pod, controller, bookkeeper, and CFO advisor, built specifically for the velocity and complexity of e-commerce. Every e-commerce engagement is built on Northstar's scalable team model, from Accounting Foundation through Financial Leadership.
Monthly close with multi-channel revenue recognition
Shopify, Amazon, wholesale, and retail reconciled to the transaction level with gross sales, refunds, discounts, and fees in separate accounts; books closed by the 15th.
True COGS analysis by SKU
Landed cost per unit including freight, duties, packaging, fulfillment, and returns, delivered as a margin report by SKU and channel.
Sales tax nexus tracking and compliance
Full nexus mapping, state registrations, automation tool setup, and ongoing filings, with a clean nexus matrix updated monthly.
Contribution margin reporting
Margin after COGS, shipping, processing fees, returns, and variable marketing, reported by product, channel, and customer cohort.
Inventory valuation and cash flow impact
Inventory tracked at true landed cost with turnover metrics, reorder point analysis, and cash conversion cycle modeling by product line.
Customer unit economics
CAC, LTV, payback period, and repeat purchase rate built into a single dashboard so you can see whether growth is sustainable.
Cash flow forecasting for inventory cycles
Rolling 13-week forecasts that account for PO timing, manufacturing lead times, and seasonal demand so you never miss a deposit deadline.
Tax strategy and entity optimization
Entity structuring, R&D credits for proprietary products, international tax planning, and cost segregation for warehouse or retail space.
What this looks like in practice.
The Situation
A $3.5M DTC skincare brand believed they were running at 62% gross margin based on product cost alone. Their bookkeeper recorded Shopify payouts as a single deposit, COGS was a quarterly estimate, and they had zero visibility into profitability by SKU.
What We Did
We deployed a finance pod, implemented A2X for multi-channel revenue recognition, and built a true landed cost model for every SKU. We also mapped sales tax nexus across 14 states and built contribution margin reporting by product and channel.
The Result
True gross margin turned out to be 44%, not 62%. They discontinued three low-margin SKUs, renegotiated their 3PL contract, and improved their cash position by $180K within six months.
We were wrong by almost 20 points on some SKUs. Northstar rebuilt our financial picture, and now we make inventory and ad spend decisions on real contribution margin data instead of Shopify reports.
E-Commerce Brand Founder
DTC Consumer Products, $3.5M Revenue
Resources for e-commerce and DTC founders.
The True COGS Guide: What E-Commerce Brands Get Wrong About Product Margins
Every cost layer that belongs in your landed cost calculation, from freight and duties to packaging and return processing.
ReadSales Tax Nexus Checklist for Online Sellers
State-by-state framework for determining nexus, filing obligations, and getting compliant before an audit.
ReadInventory Cash Flow Planning: Stop Letting Dead Stock Kill Your Business
How to model the cash impact of inventory purchases, optimize reorder timing, and free up trapped working capital.
ReadBookkeeping Essentials for Ecommerce Brands
The bookkeeping foundations every ecommerce brand needs to get right before scaling.
ReadInventory Accounting Compliance Pitfalls
Common inventory accounting mistakes that create compliance risk for ecommerce businesses.
ReadCFO Services for High-Growth E-Commerce Brands
How fractional CFO services help fast-growing DTC brands manage cash, margins, and scaling decisions.
ReadContribution Margin Calculator for E-Commerce
Plug in revenue, COGS, shipping, processing fees, returns, and marketing spend to see true contribution margin by product.
Try ItFractional CFO Services for E-Commerce
How a fractional CFO helps DTC brands gain visibility into true margins, inventory economics, and growth planning.
ReadOutsourced Accounting for E-Commerce Brands
Multi-channel revenue recognition, COGS tracking, and sales tax compliance handled by a dedicated finance team.
ReadBookkeeping Services for E-Commerce
Clean, accurate books that reconcile Shopify, Amazon, and wholesale channels at the transaction level.
ReadE-commerce accounting questions we hear every week.
True COGS for an e-commerce brand includes landed product cost, inbound freight, duties and tariffs, warehousing and pick-pack-ship fees, merchant processing fees, and marketplace commissions. Most brands only count the product cost shown on their supplier invoice, which means every pricing and margin decision is based on an incomplete number.
You are required to collect sales tax in every state where you have established economic nexus, which is typically triggered by exceeding a revenue or transaction threshold in that state. Since the 2018 Wayfair Supreme Court decision, most states set the threshold at $100K in sales or 200 transactions, and platforms like Shopify and Amazon may collect on your behalf for marketplace sales but not for your own storefront.
E-commerce inventory accounting requires tracking units across multiple locations, including warehouses, 3PLs, Amazon FBA, and in-transit stock, while properly valuing items using a consistent method such as FIFO or weighted average. Getting this right is critical because inventory errors flow directly into your COGS, overstate or understate your profit, and create problems during tax filing or due diligence.
The most important financial KPIs for a DTC brand are contribution margin by channel and product, customer acquisition cost, lifetime value, inventory turnover, and cash conversion cycle. A fractional CFO builds dashboards that connect these metrics to your P&L so you can see which products, channels, and campaigns are actually generating profit versus just revenue.
Most DTC brands need a fractional CFO once they cross $2M to $5M in revenue and start facing inventory planning decisions, multi-channel complexity, and cash flow timing mismatches that a bookkeeper cannot solve. A fractional CFO brings financial modeling, margin analysis, and fundraising support at a fraction of the cost of a full-time hire, typically $3K to $10K per month depending on scope.
Take the First Step
Let's talk about your e-commerce brand.
We'll ask about your channels, margins, and inventory situation. If we're a fit, you'll see exactly how your finance team is configured for your business.
Or call us directly: 888.999.0280
Schedule an E-Commerce Finance Consultation
Tell us about your business and we'll reach out within 24 hours.