Sell-in and sell-out
Quick answer
Sell-in is sales from the manufacturer or distributor to the retailer; sell-out is sales from the retailer to the end consumer, from the shelf or checkout.
Key takeaways
- Sell-in: your own invoices and deliveries, from the ERP
- Sell-out: sales and stock reports from retailers, via EDI (SLSRPT/INVRPT messages) or files
- For customers without reports: estimates from agent visits
What sell-in and sell-out are
Sell-in is the quantity invoiced by a supplier to a customer (retailer or distributor). Sell-out is the quantity the customer sells on to consumers. The difference stays as channel stock: if sell-in constantly exceeds sell-out, goods pile up in stores and warehouses and future orders fall.
How they are compared
Channel stock change = sell-in − sell-out, over the same period and items. Stock cover (months) = customer stock / average monthly sell-out. The ratio sell-out / sell-in × 100 shows how much of what was shipped reached the consumer.
Where the data comes from
- Sell-in: your own invoices and deliveries, from the ERP
- Sell-out: sales and stock reports from retailers, via EDI (SLSRPT/INVRPT messages) or files
- For customers without reports: estimates from agent visits
Common mistakes
1. Tracking only sell-in. Sales to the customer look good for months, then orders drop sharply when the customer's stock slowly runs down.
2. Comparing different periods. Monthly sell-in and weekly sell-out cannot be subtracted directly.
3. Different item codes. If the retailer uses a different code from the supplier, data does not link without a mapping.
How it shows up in an operations platform
Sell-in comes from the orders and invoices in the system. For sell-out, CRMconnect has an EDI module for electronic data exchange with partners, and BI reporting offers interactive dashboards and custom KPIs in which both series can be followed.
Real-world example
A manufacturer ships 1,000 units (sell-in) to a retailer, and the retailer sells 700 in the same month (sell-out). Channel stock rises by 300 units. If average sell-out stays at 700, covering the extra stock takes about half a month.
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Frequently asked
What does sell-in mean?+
Sell-in is a supplier's sale to a customer such as a retailer or distributor, measured by invoices or shipments. It is the moment goods leave the supplier.
What does sell-out mean?+
Sell-out is the customer's sale to the end consumer, measured at checkout or in retailer reports. It shows real demand, not just replenishment.
Why does the gap between sell-in and sell-out matter?+
Because the gap is channel stock. Sell-in above sell-out for a long time signals smaller orders and possible price cuts, while the reverse shows a risk of stockouts.
How do I get sell-out data?+
From retailers, through sales and stock reports sent via EDI or in files, depending on what each accepts. Without them, you work with estimates from field visits.
Where CRMconnect fits
Where CRMconnect helps
Interactive dashboards and department-level custom KPIs update in real time, using data from across the company.
Related terms
Sell-through rate
The share of received stock sold in a period: units sold / units received × 100.
TechnologyINVRPT / SLSRPT (inventory and sales reports)
EDIFACT messages by which a retailer reports stock and sales per product to the supplier, essential for VMI.
LogisticsInventory turnover
How many times stock is fully sold and replenished in a period - a measure of capital efficiency.
OperationsOverstock
Stock above the level demand requires, locking capital, taking space and risking becoming dead stock.