The Reorder Point Formula Every Maker Needs to Know
Learn the reorder point formula for makers — (average daily demand × lead time) + safety stock — with real examples, a soap business walkthrough, and how to track it in Craftybase.
Running out of shea butter mid-order. Discovering you’re out of lye on a Saturday when your supplier is closed. Ordering 10kg of fragrance oil and still having 8kg sitting on the shelf three months later.
If any of those hit close to home, you’re not alone. Most makers manage materials by feel — a quick glance at the shelf, a rough sense of “I should probably order soon.” And that works fine until it doesn’t.
The reorder point formula changes this completely. It gives you a specific number — a stock level — that tells you exactly when to place a new order, with enough lead time to never run dry. No guessing. No last-minute panic orders with express shipping fees.
Here’s how it works, with real numbers from a soap business so you can apply it immediately.
What Is a Reorder Point?
A reorder point (ROP) is the minimum stock level that should trigger a new purchase order. When your inventory of a material drops to this number, it’s time to reorder — not before, not after.
The key idea: you’re not waiting until you’ve run out. You’re placing the order early enough that new stock arrives before the old stock is gone.
Think of it like a fuel gauge with a low-fuel warning. The warning doesn’t mean you’re out of petrol — it means you’ve got just enough left to reach the next station. Your reorder point is that warning light.
Without a defined reorder point, you’re either ordering too early (tying up cash in materials you don’t need yet) or too late (scrambling when you’ve already run out). Both cost you money.
The Reorder Point Formula
The formula has three components:
Reorder Point = (Average Daily Demand × Supplier Lead Time) + Safety Stock
Let’s break each piece down.
Average Daily Demand
How much of this material do you use on a typical day? If you make products in batches, convert to a daily average across your whole production schedule.
For example: if you make 21 bars of soap per week on average, your daily demand for a key ingredient is based on 3 bars per day.
Supplier Lead Time
How many days does it take from placing an order to receiving the goods? This is calendar days, not business days — include weekends, processing time, and shipping.
If your supplier says “5-7 business days,” use 7 days as your lead time. Being conservative here protects you.
Safety Stock
This is your buffer. It accounts for two unpredictable things: demand spikes (a big wholesale order comes in, or a product goes viral) and supplier delays (your order runs late, or a shipment gets damaged).
A simple safety stock calculation: multiply your daily demand by the number of extra days you want as a cushion. Two to five days is typical for most makers.
Working Through a Real Example
Let’s use a soap business. Say you make cold-process soap bars and coconut oil is a key ingredient. Here are the numbers:
- You use 200g of coconut oil per bar
- You make an average of 3 bars per day
- Your supplier takes 10 days to deliver after you order
- You want 5 days of safety stock as a buffer
Step 1: Calculate daily demand in grams 3 bars × 200g = 600g per day
Step 2: Apply the formula Reorder Point = (600g × 10 days) + (600g × 5 days) Reorder Point = 6,000g + 3,000g Reorder Point = 9,000g (9kg)
When your coconut oil stock drops to 9kg, place your next order. By the time the delivery arrives 10 days later, you’ll still have your 3,000g safety buffer untouched — and you can keep making soap the whole time.
If you didn’t have that safety buffer and your supplier took 12 days instead of 10 (not unusual), you’d run out 2 days before the order arrived. At 600g/day, that’s 1,200g short — potentially a cancelled order or a lost customer.
The maths is simple. What makes it powerful is actually running it for every ingredient that matters.
Why “Run Until Empty, Then Reorder” Doesn’t Work
It seems logical: use up what you have, then order more. Less cash tied up in materials, right?
The problem is lead time. There’s almost always a gap between “I need this” and “I have this.” That gap is your lead time — and during that gap, you’re either scrambling or stopped.
For makers who sell on Etsy or Shopify with real-time inventory, a stockout doesn’t just mean a delayed order. It can mean a cancelled order, a negative review, or a customer who doesn’t come back.
And even for made-to-order businesses, unexpected spikes happen. A product gets featured by an influencer. A wholesale buyer places a larger order than usual. Without a reorder point and safety stock, those opportunities turn into headaches.
The other failure mode: over-ordering. Without a system, many makers compensate for stockout anxiety by buying too much. Materials sit on shelves tying up cash. Some ingredients expire or degrade. Storage space gets eaten up. A well-calculated reorder point solves both problems at once.
Calculating Reorder Points for Different Types of Materials
Not all materials need the same approach. Here’s how to adjust:
High-use, low-cost materials (like fragrance oils, colorants, small additives): calculate the formula precisely, but you can be a bit more generous with safety stock since overstocking doesn’t cost much.
Expensive, high-use materials (base oils, waxes, key metals for jewelry): run the formula carefully and keep safety stock lean. Tying up cash in expensive materials hurts.
Long lead-time materials (custom components, imported goods, specialty items): the lead time variable does the heavy lifting here. A 30-day lead time with 5 days safety stock gives a much larger reorder point than a 3-day local supplier.
Seasonal materials (ingredients that are harder to source at certain times of year): adjust your safety stock upward during peak periods, or bump your reorder point manually for those months.
Reorder Point vs. Minimum Stock Level — What’s the Difference?
These get confused often.
Minimum stock level is the absolute floor — the bare minimum you should ever hold. If you hit this, you’re already in trouble. It’s often the same as safety stock.
Reorder point is the trigger for action — higher than your minimum, set early enough that normal purchasing fills the gap before you hit the floor.
You want to reorder well before hitting your minimum. The reorder point is that “order now” signal; your safety stock is the insurance that covers you if something goes wrong before the order arrives.
Tracking Reorder Points Without a Spreadsheet
The formula is straightforward to calculate once. The hard part is keeping it current as your business changes — demand shifts, suppliers change, you add new products that use the same materials.
Spreadsheets can hold the numbers, but they can’t watch your inventory in real time. You’d have to manually update your stock levels every time you manufacture something, every time an order comes in, every time you receive a delivery.
Most makers don’t do this consistently. And a reorder point you’re not watching is no reorder point at all.
Craftybase handles this automatically. When you record a manufacturing run, it deducts ingredients from your material stock in real time based on your recipes. When you receive materials, your stock updates. And when a material drops to its reorder level, Craftybase surfaces that in your inventory management dashboard so you’re not hunting through a spreadsheet trying to figure out what’s low.
You set the reorder point once per material — Craftybase does the watching.
Compare that to the spreadsheet approach: you manufacture 50 candles, then remember you need to update the wax column, then check the fragrance oil column, then look at the wick count… by the time you’ve finished one production run, the data entry alone has eaten 20 minutes. And one missed entry puts your numbers off.
For a broader look at how material tracking fits into running a maker business, see our guide on inventory management for makers.
A Note on Reorder Quantities
The reorder point tells you when to order. It doesn’t tell you how much.
That’s a separate question — your reorder quantity — and it factors in things like minimum order quantities from suppliers, bulk pricing breaks, and your storage capacity.
A common approach: calculate the quantity that covers your next 30-60 days of usage, adjusted for any MOQ requirements. If your supplier has a minimum order of 5kg and you need 9kg, round up to 10kg to reduce order frequency.
The reorder point and the reorder quantity work together. One tells you when to pull the trigger; the other tells you how much to order when you do.
Putting It All Together
Here’s the short version you can apply today:
- Pick your key materials — the ones where running out would stop production
- Calculate average daily demand (total usage over 30 days ÷ 30)
- Get your supplier’s realistic lead time, in calendar days
- Add 2-5 days of safety stock for demand spikes and delays
- Run the formula: (daily demand × lead time) + safety stock
- Record that number in your inventory system and check it regularly
Start with three or four critical materials, not every ingredient you stock. Get those right first, then expand.
If you’re regularly running out of materials — or regularly over-ordering — you’re probably missing this step. The formula takes about five minutes per ingredient. It’s one of those small systems that pays for itself fast.
For more on preventing stockouts before they happen, the stockout prevention guide covers the full picture beyond just reorder points.
Frequently Asked Questions
What is a reorder point and how do I calculate it?
A reorder point is the stock level that triggers a new purchase order — calculated as (average daily demand × supplier lead time in days) + safety stock. For example, if you use 600g of coconut oil per day, your supplier takes 10 days to deliver, and you want 5 days of safety stock, your reorder point is (600 × 10) + (600 × 5) = 9,000g. When stock drops to 9kg, place your order.
How do I calculate average daily demand for a handmade product?
Take your total material usage over the last 30 days and divide by 30. If you made 90 candles last month and each uses 200g of soy wax, that's 18,000g total ÷ 30 = 600g per day. Use at least 30 days of data for accuracy, and adjust upward during busy seasons like Christmas or Valentine's Day when demand spikes.
How much safety stock should a small maker hold?
For most handmade businesses, 2–5 days of daily demand works well as safety stock. Use the lower end for cheap, easy-to-source materials where overstocking costs little. Use the higher end for expensive base materials, long lead-time imports, or anything where running out would stop your production entirely. Review and adjust seasonally.
What's the difference between a reorder point and minimum stock level?
Your reorder point is the trigger level — when stock reaches this number, place an order. Your minimum stock level (safety stock) is the floor — the buffer you keep to cover delays and demand spikes. The reorder point sits above the minimum, set early enough that your new order arrives before you touch the safety buffer. If you hit your minimum, something has already gone wrong.
Does Craftybase track reorder points automatically?
Yes. In Craftybase, you set a reorder level for each material once, and the system monitors your stock in real time. When you record a manufacturing run, ingredients are deducted automatically based on your recipes. When a material drops to its reorder level, Craftybase flags it in your dashboard — no manual checking required. You can start a free trial at craftybase.com/try.
Should I use the same reorder point year-round?
Not necessarily. If your sales are seasonal — busy at Christmas, quieter in summer — your daily demand changes significantly. Recalculate your reorder points before peak seasons using higher demand figures. Many makers review their reorder levels quarterly: once before the Christmas rush, once in January when things slow down, and mid-year as a check. The formula stays the same; the inputs change.
Running out of materials is one of those problems that feels unavoidable until you actually put a system in place. The reorder point formula is that system — specific, calculable, and adjustable as your business grows.
Pick your three most critical materials today. Run the numbers. Set a reorder level in whatever system you’re using to track inventory. You’ll be surprised how much mental load it takes off once you know you’ve got a number to watch rather than a shelf to eyeball.
Craftybase tracks your reorder points automatically — so when you’re deep in production, the software is watching your stock levels instead of you. Start a free 14-day trial and set up your first reorder alert in under ten minutes.
