Smart Strix + QuickBooks: Job Invoices to Your Books

Every invoice you raise against a job in Smart Strix eventually has to reach QuickBooks — the only question is whether a person types it there. This integration removes that person from the loop with a secure OAuth invoice export.

In short: Smart Strix exports invoices to QuickBooks Online through an OAuth connection you authorise once. Scope, stated honestly: invoices flow one way, from Strix into QuickBooks. It is not a full bidirectional accounting sync, and this page won't pretend it is. For 2–50 vehicle UK fleets, it means the operational system and the accounts finally show the same billing without duplicate typing.

What does the QuickBooks integration cover?

Invoice export, done properly. In Smart Strix, billing starts life attached to real work — a quote that became a job, a job that closed with signed proof of delivery — before an invoice is raised and tracked through sent, viewed and paid. The QuickBooks connection takes those invoices across into QBO, where VAT, reports and your accountant's workflow already live. Operations stay in Strix; the ledger stays in QuickBooks; both agree on what was billed.

How do I connect QuickBooks to Smart Strix?

With Intuit's own OAuth authorisation — no passwords shared, no keys pasted:

From the Smart Strix dashboard, pick QuickBooks under integrations.
Intuit's sign-in page opens; log into your QuickBooks Online account.
Approve the connection and land back in Strix, linked and ready.

Because Intuit issues and manages the tokens, disconnecting is always in your hands — from the Strix side or from your QuickBooks app settings.

When does an invoice reach QuickBooks?

Once it's raised on the Strix side and ready for the books — you keep invoicing from Smart Strix exactly as before, and the connected export carries the invoice into QBO so the accounting copy appears without anyone re-entering line items. Day-to-day credit control — viewed receipts, automated reminder schedules, late fees, partial payments — carries on inside Strix, tied to the job the money relates to.

What are the integration's limits?

Three things worth knowing before you connect:

One direction only. Invoices go from Smart Strix to QuickBooks; nothing is pulled back the other way.
Invoices, not everything. Customers-as-contacts management, bills, expenses and payroll aren't part of this connector's job.
QuickBooks Online. The OAuth flow targets QBO — desktop editions aren't in scope.

Why the blunt framing? Because "integrates with QuickBooks" is the most over-claimed line in B2B software. A precisely scoped export you can rely on beats a vague sync you can't.

Who gets the most from this?

Fleet businesses whose accountant or bookkeeper standardised on QuickBooks — couriers invoicing account clients, recovery operators billing trade customers, trades firms invoicing every completed call-out. Xero shop instead? The Xero export mirrors this design. Alerts fans can add Teams or Slack notifications for invoice-sent events, and pricing covers the plans — free to get started.

Frequently asked questions

Does Smart Strix sync fully with QuickBooks Online?

No — and we prefer to be exact: it exports invoices from Smart Strix into QBO, one way. Payments, contacts and expenses aren't synchronised back into Strix.

Is my QuickBooks login shared with Smart Strix?

Never. The connection uses Intuit's OAuth flow — you authenticate on Intuit's own page, tokens are issued by Intuit, and access can be revoked from either side at any time.

Which QuickBooks products are supported?

QuickBooks Online, via its standard OAuth connection. Desktop versions of QuickBooks are not supported by this integration.

Where do payment reminders and late fees run?

Inside Smart Strix — its AR automation handles reminder schedules, late fees and partial payments against each invoice, while QuickBooks holds the exported accounting record.

Do I pay extra for the QuickBooks connection?

It ships as part of Smart Strix rather than as a paid add-on; current plan details are on the pricing page, and starting out costs nothing.

Can I use both the QuickBooks and Slack integrations together?

Yes — they're independent. QuickBooks receives your invoice exports while Slack or Teams webhooks post event notifications such as invoice sent or refund issued.