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How Much to Charge for Sourdough Starter: 2026 Cost Math
A clear way to price a starter from jar cost, your time, and the margin you keep.
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The number you land on has to cover a jar you feed and split, not just a scoop of flour. This guide shows how to work out how much to charge for sourdough starter with a cost sheet, a worked example, and the mistakes that quietly eat your margin. If you also sell loaves, the homemade sourdough pricing guide uses the same cost-first math.
What to remember
- Cost the jar, lid, label, flour, and water for one jar.
- Pay yourself for active minutes, not the time the jar sits.
- Add a share of your monthly costs to every jar.
- Pick a margin before you pick a price.
What does one jar of starter actually cost you?
Start with one jar. Add the flour and water, the glass jar, the lid, and the label. Then add the active minutes you spend feeding, splitting, cleaning, and packing. A starter is a small product. The jar and your time can be a bigger part of the cost than the flour.
Do not guess from a big bag of flour. Price the amount that actually goes into one jar. Divide the bag price by the number of jars you can fill from it. Write that number down, then do the same for the jar and label.
Buy jars in a size you can price clearly. A larger jar holds more starter, but it costs more to fill and pack. Match the jar to the price you want. If you change jar sizes, rebuild the cost sheet.
Not every jar sells. Add a small share for jars that spoil, crack, or sit too long. If one in ten jars is a loss, your cost per sold jar is higher than the cost per jar you make. Price for the jars you actually sell.
How do you put a number on your time?
Your time has two parts. Active time is the minutes you spend feeding, splitting, cleaning, labeling, and packing. Waiting time is the time the jar sits between feedings. Charge for active time only.
Pick an hourly rate you would pay someone else to do the same work. If that rate is $20 an hour, 15 active minutes is $5.00. Write the minutes down for one batch, then use that number for every jar in the batch.
Time a full batch, not one jar. If you feed and split six jars at once, the active work is shared. Divide the batch minutes by six to get the labor per jar. That number is lower than timing one jar alone.
A worked example for a $12 jar
For example, say one jar uses $0.75 of flour and water, $1.25 of jar, lid, and label, and 15 minutes of active work at $20 an hour. That labor is $5.00. Your overhead is $0.75: $0.50 from your $20 Brevl fee spread over 40 jars a month, plus $0.25 for power and cleaning. Total cost is $7.75. At $12, your margin is $4.25, or about 35 percent.
The $4.25 is what is left after ingredients, packaging, labor, and overhead. It is not extra pay on top of your hourly rate. That margin has to cover taxes, unsold jars, and the cost of growing your shop.
What margin should you aim for?
Pick a margin before you set the price. If you want a 30 percent margin, divide your total cost by 0.70. For the $7.75 jar, that is $11.07, so $12 is a clean price. If you want a 40 percent margin, divide by 0.60 to get $12.92, so $13.
The 30 percent margin guide shows the same division for other baked goods. The cost calculation guide helps if you want to build the sheet from scratch. Round to a price that is easy to say and easy to pay.
A dollar markup is not a margin. If you add $3 to every jar, a $7.75 cost becomes $10.75, and your margin is $3.00. That is about 28 percent. A 30 percent margin needs $11.07, as the division above shows.
How do you set the price in five steps?
List every cost for one jar
Write down the flour, water, jar, lid, label, and the share of your monthly Brevl fee that belongs to this jar.
Time the active work
Use a timer for one batch. Count only the minutes you spend feeding, splitting, cleaning, labeling, and packing.
Add your hourly pay
Multiply active minutes by the hourly rate you want to earn. Do not charge for the hours the jar sits on the counter.
Add overhead
Add a share of power, cleaning supplies, phone, and your flat monthly Brevl fee. Divide monthly costs by the jars you sell.
Add your margin and check the price
Divide total cost by one minus your target margin. Round to a clean number and compare it with your local market.
What mistakes cost you money on starter?
One more mistake is pricing from a single jar. Your $20 Brevl fee is $0.50 per jar at 40 jars a month, but $2.00 per jar at 10 jars. Run the math at the volume you expect, not your best week.
Do not price from free samples. A sample jar still costs you the jar, the label, and your time. If you give one away, count it as marketing, not as a sale. Then price the jars you do sell to cover that cost.
What should you do before you commit to a price?
Before you commit to a price, run a full month. Add your flat $20 Brevl fee, your ingredients, your packaging, and your active hours for every jar you plan to sell. Divide by the jars you expect to sell. If the price leaves a margin you can live with at that volume, you have a price.
Then test it with three real buyers. Ask them to pay the price, not to tell you if it sounds fair. A paid order tells you more than a friendly opinion. The guide to knowing what to charge has more ways to check your number.
If you deliver, add drive time and miles to your overhead. A $12 jar that takes 20 minutes to deliver is not a $12 jar. Set a delivery fee or a minimum order before you quote.
Common questions
Should I charge more for an established starter than a new one?
Charge for the jar, your active time, and the margin, not for a story. If an established starter takes more feeding or a larger jar, those costs belong in the price. If it takes the same work, the price should be the same.
Do I charge for the days the starter sits?
No. You are not working while it sits. Charge for the minutes you spend feeding, splitting, cleaning, labeling, and packing. If you check it daily, count only the active minutes, not the whole day. A timer on one batch will show you the real number.
How do I price a starter if I sell it with a loaf?
Add the starter cost to the loaf cost, then set one price for the pair. Do not hide the starter in the loaf price. Write down the jar cost, your time, and the margin so you can see what the bundle really pays.
What if my price is higher than others nearby?
Check what your jar costs you before you match anyone. If your jar, label, and time cost more, a lower price cuts your pay. Shrink the jar or simplify the packaging before you cut your margin. Then compare the full cost, not just the sticker.
Can I charge for the jar separately?
Yes, if you tell the buyer before they pay. A jar deposit or a jar return price can work, but it adds a step. A single clear price is easier to explain. Keep the label clear either way. Write the rule on your order form.
General information for pricing, not legal or tax advice. Check your state cottage food rules and talk to a tax professional about your sales.