Shopify payouts arrive net of costs that never appear as a line item anywhere obvious, which is why so many Shopify profit and loss statements overstate margin. Seven charges account for most of the gap. None of them are hidden, but all of them are easy to miss if you record the payout as a single revenue figure.

1. Processing fees on orders you refunded

Refund an order and the customer gets their money back. You do not get the card processing fee back. Shopify states plainly in its documentation that currency conversion fees and credit card fees are not returned to you when you issue a refund.

For a store with a 10 percent return rate, this is a real and permanent cost that lives nowhere in a naive bookkeeping setup. Revenue reverses, the refund reverses, and the fee quietly stays. It belongs in an expense account of its own so you can see what returns actually cost you, which is always more than the merchandise value.

2. Third-party transaction fees

If you process payments through a gateway other than Shopify Payments, Shopify charges a transaction fee on top of whatever that gateway charges you. The rate varies by plan, and it sits on your Shopify bill rather than inside the payment processor’s statement, which is why it gets missed.

Shopify’s help center covers the mechanics in its page on third-party transaction fees, including which payment methods are exempt. Orders processed through Shopify Payments, Shop Pay, Shop Pay Installments and PayPal Express do not attract the fee, and neither do manual methods such as cash, cash on delivery and bank transfer.

Two stores on identical revenue can therefore have materially different fee loads based purely on payment mix. If you have never compared the two, it is worth an hour.

3. The premium for running Shopify Payments alongside another provider

A less well known charge. Where a store uses Shopify Payments together with a third-party provider, Shopify documents that transactions processed through Shopify Payments, including Shop Pay and local payment methods, are charged at standard Shopify Payments rates plus a 1.25 percent premium.

That is a meaningful addition on top of a base processing rate, and it applies to the Shopify Payments transactions, not the third-party ones. Stores that added an alternative gateway for a specific market and left it running often do not realize the arrangement repriced their main payment method.

4. Currency conversion on cross-border sales

Selling in a currency other than your payout currency introduces a conversion cost, and it is applied before the money reaches you. Shopify’s international fees documentation sets out how this works across markets.

The accounting failure here is subtle. Sellers record the converted deposit and treat the whole difference from the order value as a conversion cost, when part of it is actually the processing fee and part is the conversion. Split them. Otherwise you cannot tell whether international expansion is profitable, because the cost of serving those customers is bundled into a single unexplained variance.

5. Chargeback fees

A chargeback costs you the order value, the merchandise if it shipped, and usually a fee on top. Shopify notes that you are not charged additional conversion fees when you receive a chargeback, but the underlying dispute cost remains.

Chargebacks are worth tracking as their own expense line rather than folding into general payment fees, because the number tells you something operational. A rising chargeback rate is a signal about fraud exposure, delivery performance or a product description problem, and averaging it into processing costs hides the trend.

6. Shipping labels bought through Shopify

Labels purchased inside Shopify are billed on your Shopify invoice, not to your carrier account. Sellers who previously bought postage directly from a carrier often keep looking at the carrier statement and never notice that shipping cost migrated onto a different bill.

The practical consequence is understated shipping expense and, because the Shopify bill gets categorized as software or platform fees, an inflated software line as well. Two accounts wrong, offsetting, with a correct total. That is the kind of error that survives a casual review indefinitely.

7. App subscriptions on the Shopify invoice

App charges bill through Shopify. A store running fifteen apps can carry a monthly app spend that rivals its platform subscription, and because it arrives as one combined charge it usually lands in a single category.

Break the invoice apart at least quarterly. Most stores find at least one subscription for an app they stopped using, and the exercise also produces a number worth knowing: what your operating stack actually costs per month.

The non-fee item that causes the same problem

Gift cards and store credit are not fees, but they distort margin in a comparable way and belong in the same review. A gift card sale is not revenue. It is a liability, and it stays on the balance sheet until the card is redeemed, at which point the revenue is earned and the liability released.

Stores that book gift card sales as immediate revenue overstate income in the selling period and understate it later, and they carry no record of the obligation they owe customers. The same logic applies to store credit issued in place of a refund. ConnectBooks has a walkthrough of how the deferred revenue treatment works in practice for Shopify sellers.

How to find your own number

Pull three months of Shopify payouts and three months of Shopify invoices. Add every charge in both, then divide by gross sales for the period. That percentage is your real cost of using the platform.

Compare it to what you assumed. The gap is usually somewhere between one and four points of margin, and it is almost always concentrated in two or three of the seven items above rather than spread evenly. Fix those, and the rest is maintenance. The IRS guidance on deducting business expenses is a reasonable reference point for how the categories should be substantiated once you have them separated.