Manufacturing
What is a Bill of Materials (BOM) — and why your pricing depends on it
If you make a product, the BOM is how you learn its true cost. Here's what it is, in plain words, with a candle-maker example.
Key takeaways
- ▸ A BOM is the recipe for one unit — every material, plus labour and packaging.
- ▸ It turns ‘I think we make money on this’ into ‘I know we do’.
- ▸ Raw-material prices change monthly; a BOM keeps your pricing honest.
- ▸ Software costs every run for you, including yield and wastage.
Ask a small manufacturer ‘what does it cost you to make one unit?’ and you'll often get a guess. That guess is where margin quietly leaks. A Bill of Materials fixes it.
A BOM, in one line
A Bill of Materials (BOM) is the recipe for one unit of your product — every raw material, its quantity, plus labour and packaging. Add the costs and you have the true cost of one unit. From there, pricing stops being a guess.
A candle-maker example
Say you make a scented candle. Your BOM might be: 180g wax, 1 wick, 8ml fragrance, 1 glass jar, 1 label, plus a share of labour and gas. Total it up and you know each candle costs, say, ₹92 to make. Now you can price it properly — not by copying a competitor's shelf price and hoping.
Why guessing is expensive
- Raw-material rates change monthly; a price set last year may now be a loss.
- Wastage and yield loss eat margin you never see without measuring.
- Without a real cost, discounts and bulk deals are gambles.
- Two products can look similar but have very different true costs.
Yield and wastage — the hidden numbers
A BOM assumes you get a perfect output, but real production has loss: spillage, rejects, trimmings. If 100 units of input yields 92 sellable units, your real per-unit cost is higher than the recipe suggests. Tracking yield and wastage per run is what separates a guess from a number you can price on.
How software helps
Build the BOM once and good software costs every production run for you — materials, yield and wastage included — and even suggests a selling price. MGH Books ships industry templates (candles, food, textiles, pharma and more) so you start from a sensible recipe, not a blank sheet.
The bottom line
If you make anything, a BOM is the single most useful number a manufacturer can have. It tells you which products actually make money, where to negotiate on materials, and how low you can safely discount.