Inventory how-to
How to set up a weekly inventory review
Pick one fixed day and time each week, pull a report of what is low or about to run out, and decide what to order before suppliers close for the week.
Short answer: Pick one fixed day and time each week, pull a report of what is low or about to run out, and decide what to order before suppliers close for the week. Keep the review short by working from an exception list, not your full catalog.
Why a fixed weekly cadence works
Inventory problems grow quietly between checks. A weekly review catches slow and fast movers before they become stockouts or dead stock, without requiring you to watch numbers every day. Weekly is frequent enough for most small and mid-size stores, since lead times are usually measured in days or weeks, not hours.
What to look at each week
You do not need to review every SKU. Focus on three groups: items below their reorder point, items that will hit their reorder point before your next review, and items with sales patterns that changed sharply (a spike or a stall). Everything else can wait until next week.
Build a simple routine
Set a recurring calendar reminder on the same day and time, for example Monday morning before supplier cutoff times. Keep a running list of suppliers and their lead times so you are not looking them up each week. Separate the review into two steps: first see what needs ordering now, second check anything you ordered last week that has not shipped or arrived yet.
Step by step
- Choose a fixed day and time each week for the review, ideally before your suppliers' order cutoffs.
- Pull a list of SKUs sorted by days of stock remaining, lowest first.
- Flag anything where days of stock is less than lead time plus safety days.
- For each flagged SKU, check if it is already on order; if not, calculate an order quantity.
- Group orders by supplier so you send one purchase order per supplier, not one per SKU.
- Note any SKUs with unusual sales swings and decide if the forecast still makes sense.
- Send approved orders and log the expected delivery date so you can check it next week.
Worked example
A store sells a candle at 6 units a day on average. Lead time from the supplier is 10 days and they keep 4 days of safety stock, so the reorder point is 6 x (10 + 4) = 84 units. During Monday's review they have 90 units on hand and nothing on order, so it is not flagged yet. By the following Monday, if sales held at 6 a day, stock would be at 90 - 42 = 48 units, which is below the 84 reorder point, so this SKU would show up as needing an order during that review.
How SteadyShelf helps
SteadyShelf sends a weekly reorder email with an order-by date per SKU already calculated from lead time and safety days, so you are not pulling reports or doing the reorder point math by hand. It covers single-location forecasting and ordering; it will not help if you need to review stock across multiple warehouse locations or run cycle counts, since it does not do multi-location transfers or stocktakes.
$29/month flat, unlimited products and suppliers, 30-day free trial. Run the numbers now with the free reorder point calculator.
SteadyShelf is launching on the Shopify App Store. Join early access to get the install link first.
Related guides
- How to set up SKUs for a new store
- How to switch suppliers without running out
- How to take preorders while waiting for stock
- How to set up a backup supplier
All inventory how-to guides ยท Inventory glossary
FAQ
Should I review inventory daily instead of weekly?
For most small and mid-size stores, daily reviews are more effort than the benefit justifies, since lead times rarely change that fast. Weekly is usually enough unless you have very short lead times or very high-velocity SKUs, in which case you can check those specific items more often while leaving the rest on a weekly cycle.
What if a supplier's lead time changes suddenly?
Update the lead time you use in your reorder point calculation as soon as you hear about the change, and re-check any SKUs from that supplier that are close to their reorder point. A longer lead time raises the reorder point, so items that looked fine last week might now need ordering immediately.
Let SteadyShelf do this math for every SKU
Order-by dates per supplier, seasonal forecasts and draft POs for your Shopify store. $29/month after a 30-day free trial.
Get early access