The plain-language guide
What is a par level, and when does it stop working?
Par is the oldest trick in the kitchen for not overordering. It works because it replaces a feeling with a number. It fails for the same reason: the number does not move, and your week does.
The short answer
A par level is the amount of an item you want on the shelf after each delivery. You count what you have, subtract it from par, and order the difference. Par is average daily use, times the supplier's lead time in days, plus a cushion. It cuts overordering because the order is anchored to a number, not a feeling. It stops working when demand is not flat, because one par cannot be right on Tuesday and on Saturday.
What par means, in one sentence
Par is the target. After the truck leaves, this is how much of the item should be on the shelf. That is the whole idea. Everything else is arithmetic. Count on Monday, find 12 bottles of soy sauce, par says 30, order 18. Nobody has to decide anything at the moment of ordering, which is exactly when people decide badly. The deciding was done once, when par was set, on a calm afternoon with last month's sales in front of you.
Par is not the same as a reorder point. A reorder point is the count at which you place the order, a trigger. Par is the count you order up to, a target. The reorder point guide covers the trigger. This page is about the target.
How to set one
Take an item with a stable pattern. Say 20 cups of a fixed size a day, a supplier who takes 3 days, and a cushion of 1 day in case the truck is late. Par is 20 times 3, plus 20 times 1: 80 cups. On count day you find 25. You order 55. Next week you find 30. You order 50. The order changes, par does not.
The cushion is the only part that takes judgment. A day is enough for a supplier who is usually on time. Two days if they are not. The safety-stock guide is about picking that number honestly.
Try it with your numbers
80
units: your par level. Count, subtract, order the difference
The easiest method for a first-time owner
Par, on a fixed count day, starting with the items that cannot hurt you. Cups, lids, takeout boxes, rice, oil, soy sauce, sugar. If you carry a few extra of these, the cost is cash sitting on a shelf, not food in a bin. Write the par on masking tape on the shelf edge. Count every Monday. Order the difference. A notebook and twenty minutes.
Pick the method you will actually run. A 2025 study of 136 micro and small food businesses in Negros Occidental found owners had a good grasp of costing and budgeting, but the link between those practices and business performance was weak, because the practices were not applied consistently. Knowing the method was not the bottleneck. Doing it every week was. Par wins for a beginner not because it is clever, but because it is hard to skip. The number is on the shelf, staring at you.
Once par is a habit on the safe items, the perishables are a different problem, and the next section is why.
Where par breaks
Par assumes tomorrow looks like the average. For soy sauce, it does. For chicken, it does not. A carinderia that sells 30 servings on Monday and 70 on Saturday has no single par that is right on both days. Set it for Saturday and it holds stock for Monday through Thursday that has to survive until the weekend. Set it for Tuesday and Saturday runs out by mid-afternoon.
One par, seven different days
Daily demand for one perishable item across a week, against a par of 60. A par set for Saturday overorders four days a week: the gap between the bars and the line is stock that has to survive until the weekend. A par set for Tuesday runs out on Saturday. Illustrative numbers, not a study.
That held stock is where the bin gets filled. The pattern shows up outside kitchens too. DOST-FNRI's 2023 survey of Filipino households found that wealthier households throw away more food, likely because they buy more perishables that spoil before they are used. Buying ahead of demand is the same act whether the buyer is a family or a kitchen. The perishable does not care who signed for it.
The other place par breaks is the calendar itself. If par assumes a weekly count and a weekly order, it also assumes a week's worth of stock will survive. For anything with a shelf life shorter than the order cycle, that is already overordering by design. The daily-or-weekly guide covers matching the order cycle to the shelf life.
Par is a photograph of your demand. A forecast is a video.
Par was set once, on a calm afternoon, from an average. It is right whenever today looks like that average. A forecast is re-taken every day from what actually sold this week, so it moves when Friday moves. Same arithmetic, different input. The reorder point or forecast guide has the longer version of that difference.
Par versus forecast
| Par level | Forecast | |
|---|---|---|
| What it reads | One average, set once | Recent sales, by day of week, re-read every day |
| When it changes | When you re-set it by hand | Every day, as sales change |
| Best for | Packaging, dry goods, sauces, anything shelf-stable with steady use | Perishables, anything with a busy day, anything you have thrown away |
| Fails on | Items whose demand swings across the week or around payday | Brand-new items with no history yet |
| Effort | Notebook, tape, twenty minutes a week | Sales history and someone or something to do the arithmetic |
Most small kitchens want both. Par for the two thirds of items that do not spoil. A forecast for the third that does, which is also the third that costs the most when it is wrong. The overordering guide is about why that third gets ordered heavy in the first place.
Where ForeFlux picks up
ForeFlux is a par that moves. It reads your sales history, per item and per branch, and works out the target for the days until the next delivery, not for an average week. Saturday's number is Saturday's. It names what to order and the deadline to order it by, and it says plainly when it is already too late to fix a shortage. The rule is the same one you would use with tape on a shelf: we suggest, you decide. Every number stays overridable, and your call wins.
It asks for a little sales history first. A brand-new account says "not enough data yet" instead of printing a made-up figure. For a brand-new item, a hand-set par is genuinely the better tool until a few weeks of sales exist. ForeFlux will tell you that rather than guess.
Sources
- Deligero and Ballados, Financial Management Practices and Business Performance of Micro and Small Enterprises in the Food Retail Industry, Journal of Interdisciplinary Perspectives 3(6) (2025). 136 enterprises, Enrique B. Magalona, Negros Occidental.
- DOST-FNRI, Rice, vegetables and meat the top 3 most wasted foods among Filipino households (2023). 20,151 households; wealthier households discard more perishables.
Questions owners ask
Past the basics.
What is the par level system and how does it help cut overordering?
A par level is the amount of an item you want on the shelf right after a delivery. The system is three steps: count what you have, subtract it from par, order the difference. Par itself is average daily use, times the supplier's lead time in days, plus a cushion of a day or two. It cuts overordering because the order is anchored to a written number instead of a feeling about how busy the weekend might be. Every order is the gap between the count and the target, nothing more. Its limit is that par is fixed. If your sales swing between Tuesday and Saturday, one par will overorder on the quiet days or run short on the busy one.
Which inventory management method is easiest to implement for a beginner restaurant owner?
Par levels, on a fixed count day, starting with packaging and shelf-stable items. Cups, lids, sauces, rice, oil: things that do not spoil if you carry a bit extra. Write the par on the shelf or the bin. Count on the same day each week, order the difference. It takes a notebook and twenty minutes. A 2025 study of 136 Philippine micro and small food businesses found owners already understood costing and budgeting, but the link to performance was weak because the practices were not applied consistently. So the best method is the one you will actually run every week. Once par is a habit on the safe items, move perishables to a forecast that changes with the day.
How to minimize inventory?
Carry only what you sell before the next delivery, plus a cushion for a late truck. For each item, that means: know average daily use, know the real lead time, set par to daily use times lead time plus one or two days, and order only the difference between par and what you count. Then attack the cushion. Shelf-stable items can carry a bigger cushion because the cost of being wrong is only cash tied up. Perishables should carry a small one, because being wrong there goes in the bin. The items that hold the most money are usually a short list. Trim those first and leave the rest alone.
What are the best ways to manage inventory for a small restaurant?
Three habits, in order of effort. First, a count on a fixed day for everything, written down, including stock that is ordered but not yet delivered. Second, par levels for shelf-stable and packaging items, so those orders are arithmetic instead of guesswork. Third, a forecast for perishables, because their demand moves with the day of the week and a fixed par cannot follow it. Order perishables to a deadline: the day you would run out, minus lead time. Keep a nightly note of what went in the bin, by item. That note is what tells you which pars are set too high, and which items deserve the forecast.
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