Free shipping threshold calculator
A free shipping threshold breaks even when the margin on the extra spend pays for the label you now cover: break-even basket = average order value + shipping cost ÷ gross margin. Set the threshold at that figure or at a nudge above your average order, whichever is higher, rounded up to a clean price.
The numbers filled in are example values; replace them with yours.
$85for free shipping
Break-even basket rounded up to the next $5.
That is $23.00 above today’s $62.00 average order, about 1 more item at $28.00. The break-even basket is $80.22.
| Line | Today | At $85 |
|---|---|---|
| Order value | $62.00 | $85.00 |
| Product margin (45%) | $27.90 | $38.25 |
| Shipping you cover | Shopper pays | −$8.20 |
| Margin per order | $27.90 | $30.05 |
How the threshold is worked out
When an order ships free, the label moves from the shopper to you. The threshold pays for itself when the margin on the extra spend covers that label. Here is the math with your numbers:
Break-even basket = $62.00 + $8.20 ÷ 45% = $80.22
Nudge target = $62.00 × (1 + 20%) = $74.40
Threshold = the larger, $80.22, rounded up to the next $5 = $85
Extra items = ($85 − $62.00) ÷ $28.00, rounded up = 1
Margin per order today = $62.00 × 45% = $27.90
Margin per order at the threshold = $85 × 45% − $8.20 = $30.05
The break-even basket keeps the margin per order you make today. The nudge is your choice: a target above today’s average that asks shoppers to add something. The suggested threshold takes whichever is higher and rounds it up to a clean price, so it never falls below break-even.
The calculator assumes shoppers pay for shipping today and that a shopper who uses free shipping spends exactly the threshold. Orders already above the threshold ship free too, and each of those costs you the label without adding anything; if many of your orders are already there, set a bigger nudge.
Margin per order here is product margin minus shipping. To add pick and pack, card fees, returns and marketing, use the ecommerce profit calculator.
The same store at other margins
The thinner the margin, the more a shopper has to add before the extra spend pays for the label.
| Gross margin | Break-even basket | Threshold | Extra items |
|---|---|---|---|
| 20% | $103.00 | $110 | 2 |
| 30% | $89.33 | $90 | 1 |
| 40% | $82.50 | $85 | 1 |
| 45%Yours | $80.22 | $85 | 1 |
| 50% | $78.40 | $80 | 1 |
| 60% | $75.67 | $80 | 1 |
| 70% | $73.71 | $75 | 1 |
Lower the label before you raise the threshold
Shipping cost is a common reason shoppers leave. The Baymard Institute lists “Extra costs too high (shipping, tax, fees)” as the most common reason US online shoppers give for abandoning a cart: 40%, once the “just browsing” segment is set aside.
Right-size the box
Carriers bill the larger of actual and dimensional weight, so empty space costs money on every label. Check your boxes against the carrier package size limits and the dimensional weight calculator.
Ship from closer to your customers
Lower shipping zones usually cost less. Fulfillment Hub USA ships from five U.S. warehouses: Dover, Delaware; Miami, Florida; Houston, Texas; Los Angeles (Commerce), California; and South San Francisco, California. See how far your customers are on the shipping zone map.
Hand fulfillment to a 3PL that connects to your store
Orders from your store flow to the warehouse, and the label is bought at the warehouse’s rates. See how Shopify fulfillment and ecommerce fulfillment work at Fulfillment Hub USA.
Check the whole order, not only shipping
A threshold that pays for the label can still leave an order thin once pick and pack, card fees, returns and marketing come out. Run the same order through the ecommerce profit calculator.
Common questions
How do I calculate a free shipping threshold?
Divide your average shipping cost per order by your gross margin and add the result to your average order value. With a $62 average order, $8.20 shipping and a 45% margin, that is $62 + $8.20 ÷ 0.45 = $80.22. Round up to a clean price, such as $85, and check it asks for a sensible number of extra items.
Should the threshold be above my average order value?
Yes. Below your average order, many orders qualify without adding anything, and each one costs you the label. A threshold above the average asks shoppers to add something, and the margin on that extra spend is what pays for shipping.
Which margin should I use?
Use gross margin on products: (price − product cost) ÷ price, averaged across what actually sells. Leave shipping, fulfillment and marketing out of it; the calculator adds shipping separately. If you only know product cost as a percentage of price, your margin is 100% minus that percentage.
What if the break-even basket is far above my average order?
Then a thin margin or an expensive label is the problem, not the threshold. Bring the label cost down first: a smaller box, a lighter mailer or inventory closer to your customers. A flat shipping rate, or charging shoppers part of the label, are other options to test.
Do shipping costs make shoppers abandon carts?
They are a common reason. The Baymard Institute lists “Extra costs too high (shipping, tax, fees)” as the most common reason US online shoppers give for abandoning a cart, at 40%, once the “just browsing” segment is set aside.
Sources
Checked 2026-10-30. Rules change; confirm with the carrier or agency before you rely on a number.
More shipping and inventory tools
Keep the label behind your threshold small.
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