- Cost per bar = (materials + packaging + labour) / bars made
- Price = cost per bar / (1 - margin)
Margin is the share of the price you keep. A 50% margin means the price is twice the cost. A 60% margin means 2.5 times.
A worked example: lavender cold process soap
A home soap maker usually makes 2 to 3 lb of oils at a time in a loaf mold and cuts 10 to 12 bars. This example uses 32 oz of oils and cuts 10 bars of about 4 oz each after the cure.
Step by step
- List what goes into one batch. Write down every material, with the amount you use for one batch of 10 bars, and the packaging for each bar.
- Price each material from the pack you bought. Divide the pack price by the pack size, then multiply by the amount you used. Change units first so grams go with grams. In the example the materials and packaging come to $16.71.
- Add your time. Count every minute: making, cleaning up, packing. 1 h 30 min at $20.00 an hour is $30.00.
- Divide by the bars you made. $46.71 / 10 = $4.67 per bar. Use what you really got, not what the recipe promised.
- Set the price from the margin you want. Price = cost / (1 - margin). At a 60% margin: $4.67 / 0.40 = $11.68.
Check the wholesale price
Shops that buy wholesale usually pay about half of the shop price. Half of $11.68 is $5.84. That still covers the $4.67 cost, with $1.17 left per bar.
What soap makers often leave out
- Your time. Making, cutting, cleaning up and wrapping one batch often takes 90 minutes or more. Pay yourself for every minute.
- Packaging and labels. A label band or a box can add 15 to 60 cents to every bar.
- Bars that crack or come out short. Divide by the good bars you cut, not by the number the mold should give.
- Fees. Market stall fees, card fees and online shop fees come out of the price, so check what is left after them.
- Weight lost while curing. Weigh a bar after the cure if you sell or compare by weight.
Try it with your own numbers
The soap cost calculator starts with this example. Change the prices and amounts to yours and you have your cost and price in a minute. Save it as a recipe in Stockria and the cost stays right when a supplier changes a price.
Frequently asked questions
How much should I charge for a bar of handmade soap?
Start from your full cost per bar, with your time and packaging, then divide by 1 minus your margin. A bar that costs $3.00 sells at $7.50 for a 60% margin. Then check that half of that price still covers your cost if you plan to sell wholesale.
Is it cheaper to buy oils in bulk?
Usually, yes. Bigger packs cost less per pound, so the same recipe costs less per bar. But bulk oils tie up money and can go off. Compare the cost per bar at each pack size before you buy the big one.
Should I charge more for natural or essential oil soap?
Charge for what it costs you, then for what it is worth to your buyer. Essential oils often cost several times more than fragrance oils, so work out the cost per bar for each scent and price each one on its own.
How do I work out the cost per bar when every batch is a little different?
Write the recipe for one standard batch, then record what each real batch made. Stockria uses the real number of good bars when you release a batch, so the cost per bar is the true one.