Square
You are the merchant12 methods
YouSeller of record, so you handle your own tax
In person tooOne account across invoices and the counter
Cash App PaySquare’s own, not available through Stripe
Test modeSandbox before anything real moves
What it unlocks12 ways to pay,
Pick Square when you already take payments at a counter and want invoices settling into the same account.
12 ways to pay,
on one connection.
Pick Square when you already take payments at a counter and want invoices settling into the same account.
Connect it
Keys, then a test payment.
01
Create your keys in the Square dashboard
Start in test mode. You need the publishable key and the secret key.02
Paste them into PaySlate settings
Settings, then Payments. Your secret key is encrypted at rest and never shown again.03
Send a test invoice to yourself
Pay it with a test card. The invoice should flip to paid on its own, then switch to live.Other gateways
