Margins you can trust,
the moment stock moves.

Fulfil supports weighted average costing and standard (fixed) costing. Choose the method that matches your accounting requirements and inventory type. Most brands use weighted average costing.

No. Fulfil supports weighted average and standard (fixed) costing. FIFO's per-layer model doesn't hold up against DTC returns and cycle counts: there's no clean rule for which layer a returned or found unit belongs to, so implementations end up falling back to a weighted average of the remaining layers anyway. Weighted average keeps one cost per SKU instead of hundreds of layers to reconcile at close.

Switching costing methods is a formal accounting change, so your accountant handles the filing (Form 3115 with the IRS in the US, IFRS retrospective disclosure elsewhere). At cutover, they run a final FIFO valuation of your on-hand inventory on the old system, and that cost per SKU becomes your opening inventory value in Fulfil. Weighted average runs forward from there.

If you use Fulfil's built-in GL, COGS posts automatically to the correct accounts. If you use an external system like QuickBooks, you can sync summarized COGS journal entries. Either way, inventory value and COGS stay in sync.

Yes. Bundle COGS is calculated from component costs at time of sale. If component costs change, the next bundle sold reflects the new COGS. You can also add assembly labor as a cost element.

Three reports back up the number. The Inventory Valuation report values on-hand stock at weighted average cost (warehouse quantity × unit cost) and ties to the inventory asset account on your balance sheet for the same date. The Landed Cost Breakdown shows the base supplier cost alongside the freight, duties, and insurance allocated per unit. And the Product Cost Evolution report lists every receipt, movement, and cost adjustment for a product with running totals, so auditors can trace exactly how the current cost was reached. All three export to CSV or Google Sheets.

By default Fulfil keeps one weighted-average cost per product across your whole company, so every receipt blends into a single running average no matter which warehouse takes it in. If your locations receive the same product at materially different landed costs, you can enable Cost by Warehouse, where each warehouse carries its own weighted-average cost layer and only the receiving warehouse's cost recalculates on a receipt. COGS then uses the shipping warehouse's cost at the time of shipment. Cost by Warehouse requires weighted-average costing and is turned on by Fulfil Support. It is permanent once enabled, so confirm it fits your accounting before switching.