Inventory glossary
What is Baseline demand?
Baseline demand is the normal, steady sales level for a product once you strip out spikes from promotions, holidays or one-off events.
Baseline demand gives you a clean number to plan around. If you forecast off a week when you ran a 30% off sale, you will over-order for every normal week that follows. Separating the baseline from the bumps keeps your reorder quantities honest.
Use it as your default forecast for quiet periods, then add extra for known promotions or seasonal peaks on top of it. This way your purchase orders reflect what actually sells on a normal week, not a distorted average.
Example
A candle store sells 20 units a week most weeks. During a Black Friday week it sold 80 units. If you average all weeks together including Black Friday, you might forecast 25 units a week going forward. Pulling out the Black Friday spike and looking only at normal weeks gives a baseline demand of 20 units a week, which is the right number to use for a regular restock order the following month.
Common mistakes
- Including promotional or holiday weeks in a simple average, which inflates the baseline.
- Treating one unusually slow week as the new baseline instead of checking for a cause like a stockout.
- Never updating the baseline as a product matures, so old sales patterns no longer match current demand.
Baseline demand and SteadyShelf
SteadyShelf's forecasts are built on each variant's normal sales pattern, so order-by dates and suggested quantities are based on baseline demand rather than skewed by one-off spikes.
SteadyShelf is launching on the Shopify App Store. Join early access to get the install link first.
Related terms
Demand forecasting · Seasonality · Promotional lift · Demand spike · Moving average forecast
FAQ
How is baseline demand different from average daily sales?
Average daily sales is a raw calculation over a chosen period. Baseline demand is that same idea but with unusual spikes or dips, like a promotion or stockout, removed first, so it reflects normal demand only.
Do I need to recalculate baseline demand often?
Check it whenever sales patterns shift, such as after a price change, a new competitor, or a product moving from new to established. For most small stores, reviewing it monthly or quarterly is enough.
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