Carton, Box and Loose Pieces: How to Bill Them Correctly
Many distributors bill everything in pieces, even when they sell cartons and boxes. That habit looks simple, but it causes stock errors, wrong bills and arguments at delivery. The fix is also simple. Set the pack size for each product once. Then bill every order in cartons first, then boxes, then loose pieces. This guide shows how to do that, with examples you can copy.
Why pieces-only billing goes wrong
A piece is the smallest unit you sell. A box holds many pieces. A carton holds many boxes. When you bill only in pieces, you hide that structure.
First, counting becomes slow. A shopkeeper who ordered 2 cartons and 1 box does not want a bill that only says 110 pieces. The delivery team must work out the cartons and boxes by hand, and hand work causes mistakes.
Second, stock becomes hard to check. If the record only says 250 pieces, you cannot see at a glance how many full cartons are left. A full carton may be opened by mistake, or a loose stock count may look wrong when it is actually correct.
Third, returns become messy. A customer may return part of a box. If the bill only shows pieces, the return may be added to stock in the wrong way. Over time, small errors add up, and the stock record stops matching the stock on the shelf.
Set the carton and box size once per product
Do this setup once, before you start billing. Do it for each product, because pack sizes are not the same for every item.
Write down three facts for each product: how many pieces are in one box, how many boxes are in one carton, and how many pieces are in one carton. The third number is the first two numbers multiplied together.
For example, take a product where 1 box holds 12 pieces and 1 carton holds 4 boxes. Then 1 carton holds 48 pieces, because 4 multiplied by 12 is 48. Use those numbers for every bill, every load and every return for that product.
Do not change the pack size in the middle of a day to suit one order. If a supplier changes a pack size, update the product record first, then bill with the new size. A pack size that changes without a record is a common cause of stock differences.
How a split is worked out: biggest unit first
Always start with the biggest unit, then work down. This rule keeps bills clear and stock counts easy.
Take an order for 110 pieces of the product above, where 1 carton holds 48 pieces and 1 box holds 12 pieces. Work it out in this order:
- Divide by the carton size first. 110 divided by 48 gives 2 cartons, which is 96 pieces. That leaves 14 pieces.
- Divide what is left by the box size. 14 divided by 12 gives 1 box, which is 12 pieces. That leaves 2 pieces.
- What is left is loose pieces. In this case, that is 2 pieces.
So the bill shows 2 cartons, 1 box and 2 pieces. Check the total: 96 plus 12 plus 2 is 110 pieces. The total matches the order.
The same rule works for stock. If you have 250 pieces in stock, that is 5 cartons and 10 pieces, because 5 cartons hold 240 pieces and 10 pieces are left. No box is shown, because 10 pieces are less than one full box of 12 pieces.
| Unit on the bill | Units | Pieces |
|---|---|---|
| Cartons | 2 | 96 |
| Boxes | 1 | 12 |
| Loose pieces | 2 | 2 |
| Total | - | 110 |
Price per carton vs price per piece
A carton price and a piece price are not always the same in total. Many distributors give a lower total price for a full carton, because a full carton is faster to pick, pack and deliver. That is fair, but it must be clear on the bill.
Set a price for each unit: one price for a piece, one price for a box and one price for a carton. Do not work out the carton price from the piece price at billing time, unless that is your fixed rule. A fixed price for each unit stops arguments and stops different staff from charging different amounts.
| Unit | Pieces in the unit | Example price |
|---|---|---|
| Piece | 1 | Rs 120 |
| Box | 12 | Rs 1,440 |
| Carton | 48 | Rs 5,500 |
Note the carton saving in this example. At the piece price, 48 pieces would cost Rs 5,760, because 48 multiplied by 120 is 5,760. At the carton price of Rs 5,500, the buyer saves Rs 260. That saving is clear only when each unit has its own price.
Now bill the earlier order of 110 pieces with these prices. The bill is 2 cartons at Rs 5,500, which is Rs 11,000, plus 1 box at Rs 1,440, plus 2 pieces at Rs 120, which is Rs 240. The total is Rs 12,680, because 11,000 plus 1,440 plus 240 is 12,680. Show the split and the total on the bill, so the customer can check it.
Returns of loose pieces
Returns need the same rule as sales. Take the returned pieces back into stock in cartons first, then boxes, then loose pieces.
For example, if a customer returns 14 pieces, add 1 box and 2 pieces to stock, because 14 pieces make 1 box of 12 pieces plus 2 loose pieces. Do not add 14 loose pieces as a separate pile in the record. The total is the same, but the split is clearer for the next sale and the next stock count.
Write the return on the same bill record or return note, with the same split. Note the reason in simple words, such as damaged or extra stock. A clear return record protects both sides. The customer can see what was taken back, and the distributor can see what went back into stock.
Also check the returned pieces before you add them to stock. Damaged pieces should not go back into saleable stock. Keep them separate, and record them as damaged. A return that is recorded well today saves a stock argument next week.
How SundarVahi does it
In SundarVahi you set the carton and box size once on each product. Bills, the load form and the stock list then show cartons, boxes and loose pieces, worked out biggest unit first.
Tip: set pack sizes once, and check them with one real product before you use them for all products. One tested product catches most setup mistakes early.
Questions
What if a product has no box, only a carton and pieces?
Use only two levels for that product: cartons and pieces. The rule stays the same. Start with cartons, then show what is left as loose pieces.
Should a carton always cost less than the same number of pieces?
No. A carton can cost the same as the pieces inside it, or less if you give a carton discount. The key point is that the price for each unit is fixed and shown on the bill.
How do I handle a return of less than one box?
Add it back as loose pieces. For example, a return of 5 pieces goes back as 5 loose pieces. Do not round it up to a box.
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