Cancellation Rate Calculator

Cancellation rate is the easiest account-health metric to keep clean, which is exactly why it stings when you blow it. The limit is 2.5%, and almost every violation comes from one dumb habit: leaving out-of-stock items active and cancelling orders after they roll in. This calculator uses only the cancels that are your fault.

You need total orders and how many you cancelled yourself. Divide, multiply by 100. That's your CR.

Buyer cancels don't count

This is the relief most sellers don't know about. If a customer orders by mistake and cancels, that's on them — Amazon excludes it. The only number that hurts is the order you cancelled because you were out of stock, shipped the wrong thing, or just couldn't fulfill. So when you read your health dashboard, separate the two in your head. The buyer-initiated pile is noise; your pile is the score.

Out-of-stock is the whole story

I've rarely seen a high cancel rate caused by anything but inventory. A product sells out, you don't flip it to inactive, three orders come in overnight, and you cancel all three. On 100 orders that's 3% — over the line — from a single evening of bad stock hygiene. The fix costs nothing: set min/max limits, use restock alerts, and when a unit is gone, take the listing down. Cancelling is always more expensive than pausing.

Why it matters beyond the limit

Even under 2.5%, cancellations poison your conversion. A customer who gets "order cancelled" loses trust in your store and often doesn't come back. And a cancelled order is a small chance at negative feedback, which loops back into ODR. So a low-but-nonzero cancel rate is still quietly costing you sales you'll never see in the dashboard.

Run this after any stockout week. If you're near 2%, the answer isn't better cancellation habits — it's better inventory discipline.