Update Billing Settings
Headers
Query parameters
Optional: User UUID for user-level override - uuid
Request
Optional: Late fee calculation type - percentage|flat_rate - “percentage”
Optional: Enable automatic SMS BCC on sent invoices - boolean - false
Optional: Prefix for invoice numbers - max 20 chars - “INV-”
Optional: Late fee amount or percentage - numeric min:0 - 1.5
Optional: JSON array of phone numbers to auto-BCC via SMS - requires enable_sms_bcc=true - [“+15551234567”]
Optional: Enable automatic email BCC on sent invoices - boolean - false
Optional: Enable late fee assessment - boolean - true
Optional: Auto-send invoices on approval - boolean - false
Optional: Amount threshold requiring approval - numeric min:0 - 1000.00
Optional: Grace days before late fee applies - integer min:0 - 5
Optional: Default payment terms for new invoices - string - “net_30”
Optional: Format for invoice numbering - string - “sequential”
Optional: Days after due date to send reminders - array of integers - [7,14,30]
Optional: Enable overdue reminders - boolean - true
Optional: Require approval before sending invoices - boolean - false
Optional: Auto-send payment receipts - boolean - true
Optional: Invoice sent SMS template UUID
Optional: Invoice sent push template UUID
Optional: Invoice sent email template UUID
Optional: Invoice overdue SMS template UUID
Optional: Payment receipt SMS template UUID
Optional: Invoice overdue push template UUID
Optional: Payment receipt push template UUID
Optional: Payment received SMS template UUID
Optional: Invoice overdue email template UUID
Optional: Payment receipt email template UUID
Optional: Payment received push template UUID
Optional: Payment received email template UUID

