Retail replenishment connects stock review, order quantities, supplier purchasing and physical receiving. For a retail owner or buying lead, the practical task is to keep those decisions consistent: stock already ordered, supplier pack sizes and outstanding deliveries must remain visible at the next buying review.
This is the hub for the whole loop for retailers — Shopify and brick-and-mortar POS alike. Each section gives the working version, then links the deep guide, tool, and concept pages. It's the retail sibling of Restaurant Purchasing, Complete.
Step 1: Set a reorder policy for each type of stock
For continuously reviewed stock, one useful trigger is the reorder point: expected demand during the supplier's lead time, plus safety stock sized to demand and lead-time variability. POS products vary: some offer thresholds, planning recommendations or connected inventory apps. Recheck whichever policy you use when demand or lead time changes — which is why best-sellers still stock out.
For a weekly buying review, include the time until the next review as well as supplier lead time when setting an order-up-to target. A reorder trigger and an order quantity answer different questions. A calculator can show the arithmetic; the buyer still needs to check upcoming receipts and supplier cutoffs.
- Compute it: Reorder Point Calculator · Par Level Calculator
- Classify first: Demand Pattern Classifier — smooth, intermittent, erratic, and lumpy SKUs need different math
- Per-POS reality: Shopify low stock alerts · Lightspeed reorder report
Step 2: Decide how much — quantity is a different question than when
Order quantity balances pack sizes, supplier minimums, price breaks, carrying cost, and how much capital you want sleeping on shelves. The formal tools: economic order quantity, minimum order quantities, and — for seasonal buying against a budget — open-to-buy.
The catalog structure matters too: case break and procurement item software can keep supplier cases, pack sizes, SKUs, MOQs, and costs separate from the singles or multipacks customers buy, then aggregate their demand before the order is built.
- Deep guide: Best Inventory Replenishment Software
- Watch the trap: carrying cost — volume discounts that lose money
Step 3: Create and send the purchase orders
One PO per supplier, in the channel that supplier actually works in. Use the per-POS walkthroughs to check the available workflow:
- How to Create Purchase Orders from Shopify — native POs, transfers and supplier handoff (and if you used Stocky: migration after its August 31, 2026 retirement)
- Square Inventory Purchase Orders — setup and how to investigate automatic-PO availability
- Lightspeed: reorder report to PO · the procurement layer
- No system at all yet? Purchase Order Generator and how to write a purchase order
Step 4: Track what the supplier says back
The Whitmans customer account describes a shared supplier-purchasing workflow and includes the customer’s testimonial on support and flexibility. Use your own comparable orders to measure review time, corrections and unresolved exceptions.
- Deep guides: How AI Reads Your Supplier Emails · The 4:47 PM Supplier Reply
Step 5: Receive and reconcile costs
Receiving checks actual goods against the original request and accepted supplier changes. Keep operational landed cost separate from financial inventory valuation and COGS policy. The concepts that keep COGS honest: weighted average cost, landed cost, purchase price variance. Check how Shopify separates PO cost, receiving and the product cost-per-item field.
- Template: Receiving Checklist CSV
- Control model: Three-Way Matching vs Living POs
Step 6: Manage the catalog the loop runs on
Replenishment quality is capped by catalog hygiene: ABC analysis to focus effort, SKU rationalization to cut the long tail, GMROI and inventory turnover to judge what deserves shelf space, cycle counts to keep the on-hand numbers real.
Scaling past one location
Central warehouse feeding branches, transfer-vs-purchase decisions, and per-location replenishment with consolidated buying:
- Central Warehouse Procurement for Multi-Location Retail
- Procurement for Retailers — and the vertical pages for convenience stores, wine shops, pet stores
Running the whole loop in one system
Keep one owner for each handoff: the buyer reviews quantities and supplier changes, the receiver records physical arrivals, and finance reviews the bill and accounting treatment. The same person may do several jobs in a small shop, but the records should remain distinct.
LineNow’s retail replenishment software connects these activities through a living purchase order and the configured inventory and finance handoffs. Agree the demand source, stock owner, event mappings and exception process with your team. See current pricing and implementation scope.
Worked review: follow one SKU through the next delivery
Suppose a store buys bottles in cases of twelve. Its reviewed target is 84 bottles, with 30 usable bottles on hand and a confirmed incoming order for 24. With no other commitments, the gap is 84 - 30 - 24 = 30 bottles. Rounding to whole cases gives three cases, or 36 bottles. Review the six-bottle surplus against shelf life, space and cash before ordering.
That calculation assumes the incoming stock is usable when needed. At six bottles of demand per day, the current 30 bottles cover five days. If the existing delivery is due on day seven, the buyer must address that earlier gap even though the aggregate position includes it.
If the new order is accepted for 36 bottles but only 24 arrive, record 24 received and 12 still due unless the remainder is canceled. Do not count the original 36 as still incoming after posting the receipt. Use the receiving checklist to keep this decision visible to the next buyer.
This example tests the process; it is not a forecast or a promise of stockout prevention. For software evaluation, take the replenishment demo checklist to your vendor.
Start where it hurts: stockouts on best-sellers → step 1; cash tied up in slow stock → steps 2 and 6; surprises at the receiving door → steps 4 and 5.
Source checked
Shopify’s Stocky migration guidance, checked September 23, 2026, confirms the August 31 retirement. Use the linked migration guide for export and replacement-workflow details.