How to set reorder points and safety stock on Starch
Reorder points and safety stock are the two numbers that sit between you and a stockout — or between you and a warehouse full of product you can't move. Your reorder point is the inventory level that triggers a new purchase order; your safety stock is the buffer you hold against demand spikes or supplier delays. Get either number wrong and you're either expediting freight at 3x cost or writing off expired units.
What this looks like in practice varies. If you're managing a CPG brand across a 3PL and a co-packer, the math involves lead times, promotional calendars, and shelf life. If you're running a retail or e-commerce operation, it's velocity by SKU and channel. The inputs differ; the underlying problem is the same: static spreadsheet formulas go stale the moment your demand or lead times shift, and most operators don't have time to update them weekly.
On Starch, you end up with a live inventory dashboard that shows current stock levels across every location, the reorder point and safety stock for each SKU calculated against actual sales velocity and lead time, and alerts that tell you when a SKU is approaching its reorder threshold — before you're out of stock. Instead of a spreadsheet you update once a quarter and cross your fingers, you have a view that updates with your actual data and flags what needs action. The Demand Planner and Inventory Planner apps (both coming soon — request beta access) are purpose-built for this workflow.
Why it matters
Running out of stock costs more than the lost sale: you lose shelf position, disappoint wholesale accounts, and often pay premium freight to catch up. Holding too much costs you in storage fees, tied-up cash, and — in CPG — expired product. The businesses that get this right hold 15–30% less safety stock than they did on spreadsheets, because they're calculating from real velocity data instead of gut feel plus a buffer they padded out of anxiety.
Common pitfalls
The most common mistakes: using average lead time instead of worst-case lead time when setting safety stock, so the buffer evaporates exactly when a supplier is late. Calculating reorder points from monthly sales averages that smooth over the week-to-week demand spikes that actually cause stockouts. Treating safety stock as a one-time setup instead of a number that needs to move when velocity or lead times change. And managing inventory across locations in separate spreadsheets, so you don't realize one location is critically low until an order comes in you can't fill.
Starch apps used
See this running on Starch
Connect your tools, describe what you want, and the agent builds it. Closed beta is free.
Choose your operator
A version of this guide tailored to your role — same recipe, different starting context.
The AI stack built for CPG brands.
The AI stack built for DTC founders.
The AI stack built for restaurant and hospitality operators.
The AI stack built for local service businesses.
Related workflows in Ops & Supply
Inventory shrinkage is the gap between what your records say you have and what's actually on the shelf, in the warehouse, or at your co-packer.
Read guide →Closing out the POS at end of night means verifying that what the register says happened actually matches what the cash drawer holds, what the card processor settled, and what the day's receipts show.
Read guide →Contractor job costing is the practice of tracking what a job actually costs — labor, materials, subcontractors, equipment — against what you estimated, and updating that number as work progresses and change orders land.
Read guide →Retailer deductions and distributor chargebacks are line items that show up on your remittance as money already taken — a short-pay for a late delivery, a promotional allowance you never agreed to, a compliance fee for a label that met spec.
Read guide →