Connect FastBill and TaxJar
Integrate FastBill with TaxJar to automate workflows, sync data between apps, and eliminate repetitive tasks with AI-powered automation.
Popular FastBill + TaxJar flows
Start from a real workflow other teams are already running.
Choose a trigger
FastBill
When this happens...
New Offer
New Customer
Customer Updated
Customer Deleted
New Invoice
Invoice Completed
Invoice Canceled
Offer Updated
New Contact
Contact Updated
Contact Deleted
Choose an action
TaxJar
Automatically do this!
Create an Order Transaction
Create a Customer
List Categories
List Customers
List Nexus Regions
Create a Refund Transaction
List Orders
List Refunds
Show a Customer
Show Order
Show Refund
Summarize Tax Rates for All Regions
Update a Customer
Update a Refund Transaction
Calculate Sales Tax for an Order
Create an Order Transaction in Taxjar when New Offer in FastBill
Use this flowCreate a Customer in TaxJar when New Offer in FastBill
Use this flowList Categories in Taxjar when New Offer in FastBill
Use this flowList Customers in Taxjar when New Offer in FastBill
Use this flowList Nexus Regions in Taxjar when New Offer in FastBill
Use this flowCreate a Refund Transaction in Taxjar when New Offer in FastBill
Use this flowList Orders in Taxjar when New Offer in FastBill
Use this flowList Refunds in Taxjar when New Offer in FastBill
Use this flowShow a Customer in Taxjar when New Offer in FastBill
Use this flowShow Order in Taxjar when New Offer in FastBill
Use this flowSupported Triggers & Actions
Everything you can automate between FastBill and TaxJar.
When this happensTriggers
A trigger is an event that starts a workflow.
New Offer
Triggers when a new offer was created within your FastBill account.
New Customer
Triggers when a new customer is created within your FastBill account.
Customer Updated
Triggers when a customer is updated within your FastBill account.
Customer Deleted
Triggers when a customer is deleted within your FastBill account.
New Invoice
Triggers when a new invoice is created within your FastBill account.
Invoice Completed
Triggers when an invoice is completed within your FastBill account.
Do thisActions
Action is the task that follows automatically within your FastBill integrations.
Create Customer
Creates a new customer in FastBill.
Create Invoice
Creates a new invoice.
Add Payment for Invoice
Adds full payment for an invoice.
Send Invoice by Email
Send an invoice by email.
Create Revenue
Creates a revenue entry.
Add Payment for Revenue
Adds full payment for a revenue.
Learn how to build your first workflow
Follow a simple walkthrough to create, test, and launch your first automation.
- 1
Connect your apps
Link the apps you want to automate.
- 2
Configure your workflow
Set up triggers, actions, and map your data.
- 3
Test & publish
Test your workflow and publish it.
Trusted by Thousands. Recognized by the Best.
Recognized by leading review platforms and trusted by 10,000+ businesses worldwide.
From idea to automation.
AI will build it for you
Just describe the task in plain English. viaSocket AI selects the right apps, builds the workflow, maps the fields, and prepares everything for review before you publish.
Learn More About Automation
How viaSocket Works | A Complete Guide
Discover viaSocket, an AI-powered workflow automation platform with 2,000+ integrations. Learn what it is, how it works, and how to set up no-code automated workflows.
5 Simple Automation Hacks to Make Your Team Free
Five practical automation hacks to cut repetitive tasks and boost productivity using viaSocket, covering lead generation, onboarding, accounting, support, and HR.
What is Workflow Automation - Definition, Importance & Benefits | A Complete Guide
Explore workflow automation: its definition, benefits, how it works, real-world examples, and how to automate with viaSocket.
What are Webhooks - Definition, Working, Usage & Examples | A Complete Guide
Discover what webhooks are, how they work, and when to use them. Compare push-based webhooks with APIs and polling, with practical examples and ViaSocket integration.
viaSocket Support
We're here to help
Instant answers
AI assistant available 24/7
Expert support
Connect with our specialists
Trusted & secure
Your data is safe with us
Start automating FastBill and TaxJar free
No credit card required. Set up your first workflow in minutes.
About FastBill
FastBill is a cloud app for German invoicing & accounting. Writing offers and invoices, paying your bills or preparing your tax return is easier than ever with FastBill.
Learn moreSimilar apps
About TaxJar
TaxJar’s award-winning solution makes it easy to automate sales tax management, reporting and filing. We obsessively leverage technology and exceptional customer service to help you focus on what matters most — growing your business.
Learn more
Frequently Asked Questions
Sign up for a free viaSocket account, then authorize both your FastBill and TaxJar accounts. From there, pick a trigger in one app and an action in the other. Your first workflow can be live in under five minutes.
Yes. viaSocket uses instant triggers where available, so data moves between FastBill and TaxJar as soon as the event happens. Scheduled polling triggers run at a maximum interval of 15 minutes.
Yes. You can map specific fields, apply filters to skip records that do not match your conditions, and transform values before they reach TaxJar. No coding required.
Yes. You can set up a workflow where FastBill triggers actions in TaxJar, and a separate workflow where TaxJar triggers actions in FastBill. Both run independently and in real time.
viaSocket logs every run so you can see exactly what succeeded and what failed. Failed tasks can be retried from the dashboard without re-configuring the workflow.
Yes, there is a free plan that covers basic workflows between FastBill and TaxJar. Paid plans unlock higher task limits, faster polling, and advanced features like multi-step workflows and conditional logic.
No. The entire FastBill and TaxJar integration is built through a visual, point-and-click interface. Code blocks are available if you want them, but they are never required.
