What it means
A chargeback is not the same thing as a refund. A refund is money the merchant chooses to send back, while a chargeback is a forced reversal ordered by the customer's bank, normally with an administration fee charged on top of the lost sale.
The clock usually starts on the transaction date, but for goods and services delivered later it often starts on the expected delivery date instead. That is why a business selling event tickets six months in advance can face disputes well over a year after the money first arrived.
The period matters because it defines how long revenue stays reversible. Payment processors hold rolling reserves precisely because they are exposed to disputes on sales they have already paid out, and the size of that reserve is usually tied to the length of the window.
Merchants track a chargeback rate, the number of disputes divided by the number of transactions in a period. Card networks place businesses into monitoring schemes when that rate creeps past roughly 0.9% to 1%, which brings higher fees and, in serious cases, the loss of card acceptance altogether.
Fighting a dispute is a documentation exercise known as representment. The merchant has a short deadline, often somewhere between 20 and 45 days from being notified, to supply delivery proof, signed terms or message records, and missing that deadline loses the case automatically.
In practice
Real-world examples.
Example
An electronics retailer sells a $1,200 laptop and receives a dispute 110 days later from a customer claiming the parcel never arrived. Because the claim falls inside the chargeback period the bank reverses the payment immediately, and the merchant recovers it only by producing the courier's signed delivery record within the representment deadline.
Example
A travel agency takes payment for flights nine months before departure. The dispute window runs from the travel date rather than the payment date, so when a trip is cancelled the agency faces reversals on money it collected and largely spent the previous autumn.
Example
A subscription software firm bills $79 a month. A customer who forgot about the account disputes a year of charges, but only the payments falling inside the window can be reversed, so the firm loses four months of billing and keeps the rest.
Formula
Calculation
Chargeback rate = number of chargebacks / number of transactions x 100
Open exposure = average card sales per month x number of months in the dispute window
An online homeware retailer processes 24,000 card transactions in a month at an average order value of $85 and receives 72 chargebacks. The chargeback rate is 72 / 24,000 x 100 = 0.30%, comfortably inside the network threshold.
The cash cost is larger than the rate suggests. The disputed sales are worth 72 x $85 = $6,120, and the processor charges a $25 fee on every dispute, adding 72 x $25 = $1,800, for a total hit of $6,120 + $1,800 = $7,920 in a single month.
The exposure is larger still. Monthly card sales are 24,000 x $85 = $2,040,000, and with a 120 day window, roughly four months of sales, 4 x $2,040,000 = $8,160,000 of already banked revenue remains open to reversal at any moment.Case study
Seen in the real world.
The following is an illustrative and entirely fictional example. Brambleton Coffee Club, an invented subscription roaster, processed 9,000 card transactions a month at an average value of $32. Disputes climbed to 140 a month, a chargeback rate of 140 / 9,000 x 100 = 1.56%, which pushed the business over the network threshold and into a monitoring scheme.
Its processor responded by imposing a rolling reserve of 10% of card sales held for the length of the dispute window. Monthly sales of 9,000 x $32 = $288,000 meant 10% x $288,000 = $28,800 withheld each month, and with four months of window that built to a permanent hold of 4 x $28,800 = $115,200 of the fictional company's own cash.
The fix was unglamorous. The team changed the billing descriptor so customers recognised the charge, emailed a reminder three days before each renewal, and made cancellation a single click. Disputes fell to 36 a month, a rate of 36 / 9,000 x 100 = 0.40%, and the reserve was released over the following quarter.
Watch out
Common mistakes.
- Treating a card payment as final on the day it settles, when it stays reversible for months afterwards.
- Assuming the chargeback period runs from the transaction date in every case, and being caught out by disputes measured from a much later delivery date.
- Ignoring a dispute notification because the amount is small, which counts as a loss and still drives up the chargeback rate.
Questions
People also ask.
How long is the chargeback period?
Commonly around 120 days from the transaction or expected delivery date, though some dispute reasons carry shorter or considerably longer limits depending on the card network.
Does refunding a customer stop a chargeback?
Usually yes if the refund is processed before the dispute is filed, which is why fast, visible refunds are cheaper than fighting reversals.
Can a merchant lose money even after winning a dispute?
Yes, because the processor's dispute fee is often kept regardless of the outcome, and staff time spent gathering evidence is never recovered.
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