What's the best way to handle inventory for an e-commerce business?
The biggest challenge for e-commerce inventory isn’t tracking what you have on hand. It’s keeping your sales platforms, warehouse systems, and accounting software all in sync.
When you sell on multiple channels like Amazon, Shopify, and your own website, inventory moves fast. A sale on Amazon needs to update your Shopify availability immediately or you risk overselling. But beyond the operational headache, every sale also affects your books. Cost of goods sold, inventory asset values, and eventually your profit margins and tax liability all depend on accurate inventory data flowing into your accounting system.
Start with software that talks to each other. Your inventory platform needs to integrate with QuickBooks or whatever accounting system you use. Manual entry creates lag time and errors. You sell 47 units on a busy weekend and forget to update one system, and suddenly your books don’t match your warehouse.
Pick an inventory costing method and stick with it. Most e-commerce businesses use FIFO (first in, first out) because it matches how you probably actually ship product. Weighted average works too and simplifies things if you reorder frequently at varying prices. What matters most is consistency so your cost of goods sold calculations stay accurate over time.
Don’t forget landed costs. If you import products, the purchase price isn’t your true cost. Shipping, customs duties, and freight add up. These need to be factored into your inventory cost or your margins look better than they actually are. When you finally realize your true product cost, you might find items you thought were profitable actually aren’t.
Physical counts still matter even with digital tracking. Run a full inventory count at least quarterly, more often if you have high volume or lots of SKUs. The count almost always finds discrepancies. Good inventory management catches shrinkage early and keeps your financial statements accurate. It also helps you spot problems like theft or supplier shortages before they become significant.
Returns create accounting complexity that many e-commerce businesses handle poorly. When a customer returns a product, you need to track whether it goes back into sellable inventory, gets written off as damaged, or gets sold through a secondary channel at a discount. Each scenario has different accounting treatment.
The businesses that get this right treat inventory as a financial process, not just a warehouse task. Your team might count boxes, but someone needs to make sure those counts translate into accurate books. That’s often where bookkeeping support in Richmond fits in, connecting the physical reality of what you’re selling to the financial picture you need for decisions and taxes.
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