If you run ServiceTitan for dispatch, estimates, and invoicing, the natural next question is whether your books just take care of themselves once the two systems are connected. They don't — not entirely. The integration handles the transactional side well. The part that actually makes your books useful for running the business, job costing and truck-level margin, depends on setup that happens on the Xero side, not inside ServiceTitan.

What Syncs Automatically Between ServiceTitan and Xero

Once connected, ServiceTitan pushes completed invoices over to Xero as sales invoices, along with the customer record attached to that job. Payments collected in ServiceTitan, whether by card, check, or ACH, sync over and reconcile against those invoices. This is the part most contractors care about first: no more manually re-typing every invoice into accounting software, and no double entry between the two systems.

Sales tax collected on the invoice comes across too, provided your tax rates are configured to match in both systems. That last part trips people up more than it should — a tax rate mismatch between ServiceTitan and Xero is one of the most common sync errors we see, and it's invisible until someone actually reconciles the sales tax liability account.

What Doesn't Sync, and Why That's the Part That Matters

Here's the gap that catches contractors off guard: ServiceTitan knows which technician ran the job, how long it took, and what materials were used. None of that operational detail arrives in Xero as a job cost by default. What arrives is a lump-sum invoice amount, coded to whatever general ledger account the sync is mapped to.

That means job costing, seeing what you actually made on a specific job, truck, or technician, doesn't happen automatically just because the systems are connected. It happens when someone builds Xero's tracking categories to mirror the structure ServiceTitan uses (by truck, by tech, by job type) and makes sure invoices land in the right bucket when they sync. Skip that step and you get clean, reconciled books that still can't tell you which truck is losing money.

Setting Up the Chart of Accounts to Match ServiceTitan's Data

• Separate revenue accounts for service calls, installs, and maintenance agreements, mirroring how ServiceTitan categorizes job types
• Tracking categories in Xero set up by truck or crew, so synced invoices can be tagged and reported on at that level
• A dedicated COGS structure for equipment, refrigerant, and field labor, separate from office overhead
• Deferred revenue handling for maintenance agreements, since ServiceTitan may record the full contract value up front

This is chart-of-accounts work, not a ServiceTitan setting. It's also the single biggest reason two HVAC companies both "integrated" with Xero end up with wildly different quality of financial reporting.

Common Mistakes We See With This Integration

The most frequent one is a sync that quietly stops working, invoices pile up in ServiceTitan, nobody notices for three weeks because the books still look fine on the surface. The second is duplicate income, usually from a manual invoice entered in Xero before the sync caught up, then synced again automatically. The third is the tax rate mismatch mentioned above. All three are avoidable with a monthly reconciliation step that actually compares ServiceTitan's reports against what landed in Xero, rather than assuming the sync is doing its job silently in the background.

Frequently asked questions

Does ServiceTitan sync directly with Xero, or does it need a third-party tool?

ServiceTitan has a direct Xero integration for invoices, payments, and customers. Some contractors add a middleware tool for more advanced mapping, but the core sync doesn't require one.

Will connecting ServiceTitan to Xero automatically give me job costing?

No. It gives you clean invoice and payment data. Job costing by truck or technician requires Xero's tracking categories to be built and mapped to match how ServiceTitan structures its jobs.

How often should I check that the sync is working correctly?

Monthly, at minimum, as part of your regular bookkeeping close. Comparing ServiceTitan's revenue report against what actually landed in Xero catches sync failures and duplicate entries before they compound.

Jeremy Brewer is the founder of 911 Bookkeepers LLC in Baton Rouge, Louisiana. He worked in the field as an HVAC tech before building books for the trades, and he serves as a licensed paramedic in EMS. He is a Xero Certified Advisor.