Billing & Credits
Credit packs, auto-recharge, invoices, and Sour Sync Payments fees.
Plans, pricing, and what you actually pay
How Sour Sync charges: subscription tiers + tier-graduated usage markup. The full breakdown.
Credit packs (legacy)
PAYG credit pack documentation. Legacy pricing model — still supported for grandfathered merchants.
Setting up auto-recharge
Automatically top up credits when your balance drops below a threshold.
Downloading invoices
Access and download PDF invoices for all credit pack purchases.
Sour Sync Payments fees & payouts
How fees work, when you get paid, and how to view your payout history.
Canadian taxes — registering for GST + provincial PST/HST
Step-by-step setup for Canadian merchants: federal GST/HST registration, per-province PST / RST / QST, tax IDs on invoices, and how the calc engine stacks federal + provincial.
Tax-exempt customers — B2B wholesale, resale certificates, government
Set up per-customer tax exemption for B2B buyers. Three modes: blanket (all taxes off), GST/HST exempt (status, diplomatic, certain government), or PST/RST/QST exempt (resale certificates — the most common B2B case).
US sales tax — economic nexus, registrations, and resale certificates
Step-by-step setup for US merchants: economic-nexus thresholds, per-state registration, marketplace facilitator status, resale certificates, and the use-tax notice on invoices for non-collected states.