Square POS in Polar: the fees taken out, the net revenue put in.
Square POS reports what it processed. It cannot see your cost of goods, your ad spend or the rest of your revenue, so the money it shows is gross and the margin behind it is missing. Bring transactions, fees, refunds and disputes into Polar and they land on the same P&L as everything else, net of what Square POS kept.
/Setup Guide
How to Connect Square POS to Polar.
A Polar account with Shopify connected, admin on your Square POS business account, and Polar's AI Data Engineer, which builds the connector from a plain-language request.
01 · What you need
A Polar account with Shopify
A Polar account with Shopify connected. Payment data only means something read against the orders it settled.
Connect your data →Your Square POS account
Admin access to the Square POS business account, and the transaction reporting that covers the period you want to bring in.
Open Square POS →Polar's AI Data Engineer
No native Square POS connector yet? Describe what you need in plain language and the AI Data Engineer reads the Square POS API, writes the connector and pipes it into your warehouse, in minutes.
02 · Bring Square POS into Polar
1
Ask for the connector ~ minutes
Plain language, no code.
Tell Polar's AI Data Engineer what you want from Square POS in plain language. It reads the API, writes the connector and pipes the data into your warehouse as governed data, in minutes.
Worth knowing: what lands depends on what your account exposes. Transactions, fees, refunds and disputes are the usual set; you choose which ones you want, or import everything the API exposes.
2
Fees netted, revenue matched automatic
Gross in, net out.
Polar matches Square POS transactions to your Shopify orders and nets the processing fees, refunds and disputes out, so revenue is what you kept rather than what was charged.
3
Read it against margin the payoff
Payment cost, in the P&L.
Payment cost sits alongside cost of goods, shipping and ad spend in contribution margin and net profit, so the price of taking money is visible next to everything else you spend.
Side by side
Square POS reports what it processed. Polar reports what you kept.
Square POS shows gross settlement and its own fees, with no view of your cost of goods, your shipping or your ad spend. Polar matches the transactions to your orders and nets fees, refunds and disputes out, so payment cost lands inside margin.
Square POS on its ownon its own
+Square POS with Polarblended
Revenue is gross, before fees and refunds come out.
Net revenue, after fees, refunds and disputes.
Processing fees sit outside the margin calculation.
Payment cost inside contribution margin and net profit.
Disputes and chargebacks arrive as a separate statement.
Dispute cost taken off the revenue it belongs to.
No way to compare the true cost of each gateway.
Blended cost of accepting payment, across processors.
The Gap
The connector is only half of it.
Once Square POS's fees and refunds are netted against your real orders inside Polar, you can use the result wherever you already work. Ask Polar in plain language, pull it live through the Polar MCP, or schedule it into the report your team reads every morning.
Square POS
transactions, fees, refunds, disputes
Polar
net profit, blended margin