Finance & ERP · Integration
Sovos
Add Sovos to your product for your customers, and give your AI agents governed access to it.
Sovos is tax compliance software, and the reason it gets integrated rather than rebuilt is that the rules change constantly and differ by country. An embedded Sovos integration sends a transaction from your product for tax determination and, where a country mandates clearance, submits the outbound invoice through Sovos to the tax authority and reads back what came of it. The surface is deliberately narrow and its correctness matters far more than its breadth: a transaction submitted twice is a compliance problem rather than a duplicate row, so submissions are idempotent and each one is recorded against the tenant that made it. Each customer's registrations, jurisdictions and the mandates they fall under are configuration, because no two are subject to the same set. fastn stores each account's credentials separately and tracks the interface as mandates change.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let each customer connect their own Sovos account so tax is determined under their registrations rather than yours.
Send a transaction from your product for determination, so tax is calculated where the rules are actually maintained.
Submit an outbound invoice for clearance in the countries that require it, idempotently so nothing is filed twice.
Read the response back onto your own record so the cleared document and its status stay traceable.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent explains how tax was determined on a transaction by reading what was submitted and what came back.
An agent lists transactions that were rejected and what the response gave as the reason.
An agent resubmits a corrected transaction within scoped permissions, with the action attributed.
Example prompt
Which invoices submitted this week came back rejected, and what did the response say was wrong?
Set up Sovos in 4 steps
- 01Enable the Sovos connector in your fastn dashboard.
- 02Have each customer supply their own Sovos credentials and confirm the registrations and countries they operate in.
- 03Map the transaction and invoice fields your product sends, and decide which responses you write back.
- 04Call it from your product and expose the same connection to your agents through the MCP gateway.
Why teams use the Sovos integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Sovos integration without building it. Your customers connect their own Sovos account inside your product and work their invoices, payments and vendors there, with no per-customer code on your side.
- Handle the part that actually costs time: financial writes must be idempotent and reconcilable, because a duplicate is an accounting problem rather than a bug. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Sovos update is not your on-call problem.
- One integration serves your product and your agents. The same governed Sovos connection powers in-product features and gives AI agents scoped, audited access, so you move financial records without hand-keying them between systems without wiring it twice.
Used by these teams
Compare with
NetSuite
SAP
XeroOften used alongside
Tools the same teams tend to run next to Sovos, across other categories.
Shopify
Stripe
BigCommerce
AfterShipSovos integration FAQ
How do I add a Sovos integration to my product?
Enable the Sovos connector in your fastn dashboard, then let each customer authenticate their own Sovos account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Sovos client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Sovos account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Sovos account and only ever sees their own invoices, payments and vendors. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this Sovos integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent explains how tax was determined on a transaction by reading what was submitted and what came back.
Who maintains the Sovos integration?
fastn does. When Sovos changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Is the Sovos integration safe for financial writes?
Writes are idempotent, so a retry after a timeout does not post a document twice, and every call is logged per tenant so an entry can be traced back to the event that created it. That matters more in finance than anywhere else, because a duplicate is a number somebody has to explain.
Can it handle each customer's own chart of accounts?
Yes. ERP deployments are configured to the business, so account structures, required fields and fiscal calendars differ per customer. Those are mapped per tenant as configuration, not hard-coded.
What about Sovos rate limits during a first import?
Backfills are throttled deliberately. ERP limits are often account-wide rather than per-integration, so an unthrottled import can exhaust a customer's allowance and disrupt their other integrations.
What can I build with the Sovos integration?
A common starting point: let each customer connect their own Sovos account so tax is determined under their registrations rather than yours. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the Sovos integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Sovos does not change your per-connector cost. You can start free with 3 connected accounts.
Add Sovos to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.