STEP 1
Connect Bill and FastBill
Save credentials in WEXTL once. We store them encrypted and reuse the authorization across every workflow [3]. No coding or API skills required.
Bill and FastBill Integration
Build finance workflows between Bill and FastBill on a visual canvas — set up data fields sync between apps once and let data flow when events come automatically. Integration will work without code and your team will see the workflow inside WEXTL® builder.
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Learn about Bill and FastBill
Detailed info you need to know about Bill and FastBill integrations in WEXTL. Explore which modules apps support and how you connect them.
How to connect Bill to FastBill
Set up your Bill and FastBill integration in 3 simple steps [2] — no coding required. Up to 10 minutes setup.
STEP 2
Build a workflow
Paste selected Bill and FastBill nodes onto the canvas [4], or describe what you want and WEXTL wires the flow together with AI Builder.
STEP 3
Map your data
Choose which fields need to sync between Bill and FastBill. Use filters or leverage a JS custom code step in between — everything is on the canvas.
How does the integration between Bill and FastBill work in WEXTL?
WEXTL exposes actions and triggers for Bill and FastBill that help you connect apps and automate repetitive tasks [1]. A trigger is an event that happens, an action — a step that performs when the event has occurred.
Bill triggersFastBill actions
Bill modules
- Cancel a PaymentCancels a payment using its unique ID.
- Create a BillCreates a new bill for a vendor.
- Create a CustomerCreates a new customer in the system.
- Create an InvoiceCreates an invoice for a customer.
- Create a PaymentCreates a payment in the system.
- Create a VendorCreates a new vendor.
- Get a BillRetrieves a bill by its ID.
- Get a CustomerRetrieves a customer's details from the service.
- Get an InvoiceRetrieves an invoice from the system.
- Get a PaymentRetrieves a payment from the service.
- Get a VendorRetrieves a vendor's details.
- List Bill DocumentsRetrieves all bill documents from the service.
- List BillsRetrieves a list of all bills.
- List CustomersLists all customers.
- List InvoicesLists all invoices.
- List PaymentsLists all payments.
- List UsersLists all users.
- Make an API CallPerforms an arbitrary authorized API call.
- Update a CustomerUpdates a customer's information in the system.
- Update an InvoiceUpdates an invoice with new information.
- Update a VendorUpdates a vendor's information in the system.
- Upload a Bill DocumentUploads a bill document to the specified location.
- Watch BillsTriggers when a new bill is created.
- Watch CustomersTriggers when a new customer is created.
- Watch InvoicesTriggers when a new invoice is created.
- Watch PaymentsTriggers when a new payment is made.
FastBill modules
- Cancel an InvoiceCancels an invoice.
- Complete an InvoiceMarks an invoice as completed and updates its status in the system.
- Create a ContactCreates a new contact in the specified service.
- Create a CustomerCreates a customer in the system.
- Create a DocumentCreates a new document in the specified service.
- Create an ArticleCreates a new article.
- Create an InvoiceCreates an invoice with specified details in the service.
- Create a ProjectCreates a new project in the selected service.
- Create a Recurring InvoiceCreates a recurring invoice based on the provided parameters.
- Delete a ContactDeletes a contact from the specified service.
- Delete a CustomerDeletes a customer from the service.
- Delete an ArticleDeletes an article from the service.
- Delete an InvoiceDeletes an invoice from the system.
- Delete a ProjectDeletes a project from the service.
- Delete a Recurring InvoiceDeletes a recurring invoice from the system.
- Get ArticlesRetrieves all articles from the service.
- Get ContactsRetrieves all contacts.
- Get CustomersRetrieves all customers.
- Get DocumentsRetrieves all documents from the service.
- Get InvoicesRetrieves all invoices.
- Get ProjectsRetrieves all projects.
- Get Recurring InvoicesRetrieves all recurring invoices.
- Lock an InvoiceLocks an invoice to restrict its modifications.
- Make an API CallPerforms an arbitrary authorized API call.
- Mark an Invoice as PaidMarks an invoice as paid in the system.
- Send an Invoice by EmailSends an invoice to a recipient via email.
- Send an Invoice by PostSends an invoice by post to a specified recipient.
- Update a ContactUpdates a contact in the system with the specified details.
- Update a CustomerUpdates a customer's information.
- Update an ArticleUpdates an article in the system.
- Update an InvoiceUpdates an invoice with new information or changes.
- Update a ProjectUpdates a project with new information, such as details, status, or contributors.
- Update a Recurring InvoiceUpdates a recurring invoice with new details.
- Watch EventsTriggers when a new event occurs.
Explore alternative integrations
There are other apps [9] supported by WEXTL that can be paired with Bill and FastBill integrations. Pick any from the list below if the current combination isn't the one you need.
Frequently asked questions
Common questions about connecting Bill and FastBill.
Connect your Bill and FastBill accounts once, pick a trigger in one app and an action in the other, then map the fields so data flows automatically between them. [3]
Example: when Bill's "Watch Bills" fires, WEXTL can "Cancel an Invoice" in FastBill. Bill has 4 triggers (including Watch Bills, Watch Customers, and Watch Invoices); FastBill has 33 actions (including Cancel an Invoice, Complete an Invoice, and Create a Contact). Add filters and transforms between steps when you need them. [1]
Yes — the integration works in both directions. Use each app's triggers to start a workflow and the other app's actions to update it. [2]
No. Bill-to-FastBill automations are built visually on the canvas. You can optionally add custom JavaScript with Functions when you need advanced logic. [4]
Yes. Trigger-based automations start the moment Bill (or FastBill) fires a new event — webhook-backed apps run within seconds, and polling-only apps re-check on a schedule you control. [7]
A first automation typically takes 5–10 minutes: connect each app's credential once, drop a trigger + action onto the canvas, map the fields, and turn the workflow on.
You can build your Bill + FastBill automation on a 3-day trial with every feature unlocked. Cancel anytime. For your protection, a small deposit is charged to your card when your trial starts. It counts toward your first payment and is non-refundable. [8]
References
List of sources used to gather information about the Bill and FastBill integration.
- Bill and FastBill integration source code, module specs and credentials implementation.
- Our Bill and FastBill integration documentation, structured input and output parameters, scopes, and authentication methods.
- Official vendor API documentation for Bill and FastBill — used to verify field meanings, authentication flows, and anything our own specs don't fully capture.
- WEXTL® visual workflow builder, anonymized data from our technical support team.
- Bill integration information
- FastBill integration information
- WEXTL® Scheduling
- WEXTL® Pricing and Trial
- WEXTL® Apps Library