Open a project and add an invoice. Each invoice is a typed list of line items — description, quantity, unit price — plus currency, tax rate, deposit, due date, and payment terms. The total and remaining balance compute automatically.
To accept online payments, go to MyBiz Settings, Payments tab, and connect one of the supported providers: Stripe, PayPal, or Monobank (for Ukrainian payments). Once connected, the public invoice page shows a Pay button that runs the charge directly. The invoice status flips to Paid the moment the payment lands. Without a connected provider, invoices still work as documents — the client pays you by bank transfer and you mark the invoice paid manually. Currency comes from MyBiz Settings; you can override per-invoice if you bill some clients in a different currency.