Free shipping that nudges the cart,not your profit.
"Free" shipping is never free — someone pays for it, and if you set the bar wrong it's you, on every order. This sets the threshold high enough to lift basket size, but never below the order value where your margin actually covers the box.
Your numbers
What a typical order is worth today, before any threshold nudge.
What it actually costs you to fulfill and ship a single order — postage, box, the lot.
What's left after product cost, as a percentage. This is the pool that has to absorb free shipping.
The verdict
Suggested free-ship threshold
$55
Break-even order value
$12
The floor — never set the bar below this.
Margin on a current-AOV order
$27
Comfortably covers the box.
Shipping as % of AOV
15.6%
A typical order, where the money sits
Threshold vs your AOV
Anything below $12 loses money on every free-ship order. The green nudge zone (AOV + ~15–30%) lifts basket size without scaring shoppers off.
Sensitivity · margin left after shipping
What each threshold leaves you
| Threshold | Threshold value | Margin after shipping |
|---|---|---|
| At current AOV | $45 | $20 |
| AOV + 15% | $52 | $24 |
| AOV + 25% | $56 | $27 |
| AOV + 40% | $63 | $31 |
Read down the right column: every threshold here clears your $12 break-even, so each leaves real margin even after you eat the $7.00 shipping cost. The +25% row (highlighted) is the usual sweet spot — high enough to nudge, low enough to convert.
Your move
You've got the threshold. I'll find the order value behind it.
Free-ship threshold $55 on a $45 AOV, break-even at $12 (ship cost $7.00, 60% margin).
Send me your store. In the first 30 minutes I'll show you where your real margin is, whether your shipping bar is leaking money, and the fastest lever to lift AOV — bundles, the offer, or the cart flow. Free, and you keep the plan whether you hire me or not.
Plain English
A threshold is a deal you make with your own margin
A free shipping threshold is the minimum order value a customer has to hit before you eat the shipping cost for them. "Spend $50, ship free." It works because of a quirk of how people shop: rather than pay $7 for shipping, a shopper will happily add a $14 item to dodge the fee. You lose the shipping but win a bigger order — if the math is right.
The math is the whole game. Every free-shipping order has to generate enough gross profit to cover the box you just paid for. If your margin can't absorb the shipping cost at the threshold you set, you're not running a promotion, you're running a slow leak. The break-even order value is the floor: the order size whose margin exactly equals your shipping cost. Set the bar below that and every qualifying order loses money.
This calculator gives you both numbers that matter. The break-even order value — the absolute floor you must never drop below — and a suggested threshold set 15–30% above your current AOV, which is the sweet spot for nudging basket size without scaring shoppers off. We also show you the margin left on a typical order and what shipping is really costing you as a slice of every sale.
The formula
Break-even order value = Shipping cost ÷ Gross margin
Ship for $7 at 60% margin → break-even order value = 7 ÷ 0.60 = $11.67. Any order above that throws off enough margin to cover the box. But you don't set the bar at break-even — at a $45 AOV you'd set it around $56 (AOV + ~25%) to actually move basket size, and since $56 sits well above the $11.67 floor, every free-ship order stays comfortably profitable.
Where to set the bar
There's no single magic number — it's a function of your AOV and your margin. Two rules of thumb pull in opposite directions, and a good threshold respects both at once:
| Rule of thumb | Threshold |
|---|---|
| Nudge basket size | AOV + 15-30% |
| Protect margin | At or above break-even order value |
Source: Free shipping threshold strategy · 2025
Your threshold math came back ugly. Now what?
Margin won't cover shipping at any sane order size.
The problem isn't the threshold, it's the unit economics. Raise price, cut COGS, or switch to a flat-rate or paid-shipping model. Free shipping on a thin margin is a promise you can't afford to keep.
Break-even sits far below your AOV.
Good news — you have room. Set the bar 15–30% above AOV to chase basket size, not at break-even. The gap between break-even and your threshold is pure upside.
Suggested threshold barely clears current AOV.
Your shipping cost is forcing a high floor. Negotiate carrier rates, use lighter packaging, or zone-rate your shipping so the break-even drops and you can set a more enticing bar.
Shipping is over ~20% of AOV.
Shipping is eating your category alive. Bundle products to lift order value, or build the shipping cost into product price and market it as free shipping site-wide.
Ways to make a threshold actually work
01Anchor above AOV
Set the bar 15–30% over current AOV. Too low and you give away shipping on orders that would've happened anyway; too high and nobody bites.
02Show the progress bar
"You're $8 away from free shipping" is one of the highest-converting nudges in ecommerce. Surface it in the cart, not just at checkout.
03Recommend the right add-on
Suggest a product priced just above the gap. Make hitting the threshold a one-click decision, not a math problem.
04Never drop below break-even
The break-even order value is a hard floor. Below it every free-ship order loses money no matter how many you do.
05Bundle to lift the floor's value
Bundles raise AOV and margin at once, which lets you set a higher, more profitable threshold without hurting conversion.
06Test flat-rate against free
A low flat rate ($4.95) sometimes beats free shipping on profit. Run both and watch contribution margin, not just conversion.
07Price shipping into the product
For low-AOV, low-margin lines, bake the cost into price and advertise free shipping everywhere. Shoppers prefer one number.
08Zone or weight your real cost
Your shipping cost isn't one number. Use your worst realistic cost when setting the bar so a heavy order doesn't wipe out the margin.
09Revisit when carrier rates change
Postage creeps up every year. A threshold set two rate hikes ago is quietly underwater — recheck it every couple of quarters.
10Protect it from discount stacking
A 20% code on top of free shipping can push an order below break-even. Decide whether free shipping survives a coupon before you launch it.
The vocabulary
- Free shipping threshold
- The minimum order value at which you cover shipping for the customer instead of charging them.
- Break-even order value
- The order size whose gross margin exactly equals your shipping cost: shipping ÷ margin. The floor you must never set below.
- AOV
- Average order value: total revenue ÷ number of orders. The baseline a threshold tries to lift.
- Gross margin
- Revenue minus cost of goods, as a percentage. The pool that has to absorb free shipping and everything else.
- Margin per order
- The gross profit a typical order throws off: AOV × margin. It has to exceed shipping cost for free shipping to pay.
- Contribution margin
- What's left from an order after all variable costs, including shipping. The number that tells you if free shipping actually helped.
Free shipping questions, straight answers
Start from two numbers: your average order value and the order value where your margin covers shipping (shipping cost ÷ gross margin). Set the bar 15–30% above your AOV to nudge basket size, but never below that break-even order value or you lose money on every qualifying order. This calculator hands you both figures.
Keep going
A calculator tells you what. A call tells you what to do about it.
Send me the account behind these numbers. I'll tell you straight where the money's leaking and what I'd fix first — free, and you keep it whether you hire me or not.