The 1688 reorder point formula is the one calculation that keeps Shopee listings alive between restocks. Get it right and you stop making stock decisions on gut feel. Get it wrong and you lose rank during the weeks you can least afford to.
Running Out of Stock on Shopee Costs More Than You Think
When a listing goes to zero, Shopee's algorithm drops its rank. That rank does not recover automatically when stock comes back. You rebuild it with sales velocity you cannot generate because you just ran out.
Recovery time makes this worse for 1688-sourced shops. A domestic seller can restock in 3-5 days. You are looking at 12-22 days minimum on air freight, 28-45 days on sea. The rank decay runs the entire time.
The worst version: a stockout on November 10 means you miss 11.11 entirely. Miss 12.12 and Tet in the same quarter and you have dropped out of your category's three highest-traffic days of the year.
A specific trigger number solves this. That number is your reorder point.
What a Reorder Point Is, and How It Differs from Safety Stock
The reorder point (ROP) is the inventory level at which you must send an order to your supplier. Not "when it looks low." Not "soon." That day.
Safety stock sits below the ROP. It is the emergency buffer for when something breaks: a late shipment, a customs delay, an unexpected sales spike. ROP is the alarm. Safety stock is what you burn if the alarm fires too late.
These are not interchangeable. Confusing the two is why sellers set an alert at 20 units, feel fine, and then discover they need 14 days of lead time they did not account for.
This is the third post in an inventory planning series. The first two cover measuring actual lead time and sizing your capital buffer for 1688 sourcing on Shopee. If those numbers are not already in your records, start there.
The 1688 Reorder Point Formula
ROP = (Average daily sales x Actual lead time in days) + Safety stock
Average daily sales. Pull 30-60 days of history. Remove any weeks that ran a flash sale or platform voucher campaign. Those weeks inflate your baseline and produce an ROP that over-orders for normal periods. You want the steady-state number.
Actual lead time. Measure from the day you click "place order" on 1688 to the day goods arrive in your warehouse. Not what your supplier lists on their product page. Not the freight forwarder's estimated transit time. Your real, measured number.
Safety stock. Plug in your calculated figure. If you do not have one yet, use 15-20% of your average order quantity as a temporary placeholder while you collect data.
All three inputs must come from your own records. Inventory turnover for 1688 imports varies too much by category, season, and supplier location to borrow numbers from someone else's shop.
Real Lead Time When Sourcing from 1688 (Measure It, Do Not Guess)
Your supplier's quoted shipping time almost always covers transit only. The full door-to-door time has four stages:
- Factory processing: 3-5 days
- Consolidation at freight forwarder: 2-4 days
- Transit: 5-10 days air, 20-30 days sea
- Customs clearance: 1-3 days
Air freight total: 12-22 days. Sea freight: 28-45 days. Comparing 1688 freight routes covers when each option makes financial sense per SKU.
For new suppliers, add 3-5 days buffer until you have at least three completed orders to measure from. New suppliers consistently misquote processing time until they have handled your order type before. Log the actual start and end date for every order. Three data points produce a working average. More data refines it.
Reorder Point Examples by Product Category
Phone accessories (stable demand, 14-day lead time via air): 8 units/day sales, 30 units safety stock. ROP = (8 x 14) + 30 = 142 units. When stock drops to 142, the order goes out.
Fashion (variable demand, 16-day lead time): Non-campaign daily average: 5 units. Safety stock: 40 units. ROP = (5 x 16) + 40 = 120 units.
Home goods (slow-moving, 18-day lead time): 2 units/day, 15 units safety stock. ROP = (2 x 18) + 15 = 51 units.
Review ROP monthly for top-revenue SKUs. Quarterly for everything else, or whenever Shopee shifts a program that affects your category's traffic.
When to Adjust Your ROP Outside the Normal Cycle
The standard formula assumes lead time stays constant. It does not.
Chinese New Year (January to February). Factories close 2-3 weeks. Production ramp-up afterward adds another 1-2 weeks. For any order placed in Q4 that needs to arrive before or during the holiday, add 21-28 days to your standard lead time. If your normal lead time is 14 days, plan with 35-42 days.
Golden Week, National Day (early October). Seven-day factory closure. Add 10-14 days total buffer to any order timed around this window.
Before major campaigns. 11.11, 12.12, and Tet typically run at 150-200% of your normal daily rate. Recalculate ROP using the elevated number, not your baseline. Ordering to the standard ROP will leave you short on the days it matters most.
New SKUs without history. Use the daily sales rate of the closest comparable product you currently stock. Revisit after 30 days of real data.
Supplier signals low stock. Treat this as a ROP trigger regardless of what your inventory level shows right now. Either place an order immediately or identify a backup source. Common mistakes when qualifying new 1688 suppliers covers what to check before switching under time pressure.
FAQ: 1688 Reorder Point for Shopee Sellers
My supplier's minimum order is 100 units, but my ROP triggers at 80 units on hand. Which takes priority?
The ROP tells you when to order. Order when inventory hits 80. The MOQ tells you how much to order. You place the order at 80 units on hand and buy at least 100 units when you do.
I sell on Shopee and TikTok Shop from the same stock pool. How do I calculate daily sales?
Add both platforms. If Shopee moves 5 units/day and TikTok Shop moves 3 units/day, your ROP input is 8 units/day. The inventory does not know which platform sold it.
My lead time ranges from 14 to 22 days depending on the shipment. Which number do I use?
Use the longer end: 22 days. Planning to the average means a slow shipment cuts into safety stock before your restock arrives. The true landed cost of carrying a few extra units is almost always cheaper than the rank penalty from going out of stock.
How often should I recalculate my ROP?
Monthly for your top 20% of SKUs by revenue. Quarterly for the rest. Always recalculate before a major Shopee campaign or a Chinese factory holiday that extends your lead time.
I am just starting and have no sales history. Where do I begin?
Use the daily sales rate of the most comparable active listing in your category. Set safety stock at 25-30% of your MOQ for the first two months. Once you have 30 or more days of your own sales data, recalculate with real numbers and tighten from there.
If you want to track reorder points across your entire SKU catalog alongside supplier lead time history and live stock levels, Ordinex Scout does this in one view. Scout is currently in private beta. Join the waitlist at ordinex.cc.