Accept PagSeguro payments for your invoices.
Invoices can have Recurring/Subscription payments can be added to the client’s initial invoice payment.
Adds beautifully designed HTML notification templates to Sprout Invoices.
Recurring Invoices provides a way for you to generate new invoices on a schedule.
This add-on brings the Time Tracking features found in the paid versions of Sprout Invoices to the free version.
Accept Invoice credit card payments via Payment Express Merchant Hosted solution.
Use beanstream as your credit card processor.
Use the Authorize.net service as the credit card processor for invoice payments.
Stripe is awesome and we hope you love it as much as we do. Secure credit card payments without the hassle.
Use NMI as your credit card payment processor.
Use BluePay for credit card processing your invoice payments.
Adds advanced editing to your line-items.
Adds GST and HST tax to line items. Could be adopted to modify different types of taxes.
Adds VAT & is an example framework for custom Client meta.
Accept Paypal Express payments for your invoices. Including invoice deposits.