Duet's invoicing allows you to easily create professional invoices and receive payments online. Advanced invoicing features eliminate time consuming manual processes

  • The visual invoice builder + autocomplete + saved products makes invoicing with Duet the fastest
  • Automated invoice reminders mean you don't have to spend your time chasing late payments. Duet will do it for you.
  • Create and send estimates for client approval and automatically generate and send invoices when estimates are approved.
Give it a try

Customize and brand invoices to match your business

Add your logo and choose from multiple layouts and professional themes to create invoices that match your unique brand.


Automatic invoice reminders

Chasing late payments is time consuming and frustrating. With it's customizable invoice reminders, Duet automatically follows up with clients to ensure you get paid quickly.

Accept payments online

Allow your clients to pay invoices online using Stripe or PayPal. You can enable one or both. If you enable both, your clients can choose the method they prefer. Either way, you receive your funds immediately.

  • Duet does NOT take any percentage or fee. The only fee you pay is for Stripe or PayPal.

Create products & set price
Add products to invoices with autocomplete

Save products for quick reuse

Create products and services so they can be quickly added to your invoices

Billing overview

Get a complete overview of your billing status on the billing dashboard


Automated Billing Status

Easily stay informed of all billing activity with Duet's automated daily summary delivered directly to your inbox. It shows the status of all upcoming and overdue invoices, recent payments, and recent reminders, so you'll always be up to date.

Invoice discussions

Invoice discussions allow you or your clients to ask and answer questions and receive updates directly via email and within Duet.


And much much more...

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Recurring Invoices

Easily create invoices that are sent out on a pre-defined schedule., just create the recurring invoice, define your schedule, and Duet will handle the rest.

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Send estimates that can be automatically converted to invoices when they are approved by your clients.

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Download Beautiful PDFs

Download and send beautiful PDFs with your logo and the theme/layout that you've chosen for your invoices.

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Payment Notifications

When an invoice is paid, the money is automatically deposited in your Stripe or Paypal account and you are automatically notified in the system and via email

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Invoice History

View a complete history of each invoice, including each time an invoice is viewed by a client.