How to Connect Brex and TriNet

Brex + TriNet Integration

Connect Brex (Accounting) to TriNet (HR & Payroll) with a custom REST integration or low-code tools. Sync employees, payroll runs, and deductions. Integration options, prerequisites to confirm, and what the data flow could look like.

By Andrew Pyle · Founder, Purcell Analytics

Tool A: Brex (Accounting)

Tool B: TriNet (HR & Payroll)

Brex (Accounting) and TriNet (HR & Payroll) are commonly run side-by-side. When teams operate both, the question that follows is how to keep the two in sync without re-entering data twice. This page describes a possible custom integration and what to confirm during discovery — not an off-the-shelf connector or a project we have already delivered for this exact pairing.

What teams typically want to integrate

Push payroll runs as journal entries into the right departments
Sync employee records so 1099/W-2 reporting stays consistent
Map benefits deductions to the correct accounting categories
Reconcile payroll tax payments to GL automatically

How the integration could work

A few paths are worth evaluating, depending on each tool's supported mechanism, your stack, and budget:

Native / first-party connector — check whether one exists specifically between Brex and TriNet (not assumed; verify with each vendor and confirm the edition you run is supported)
REST API on both sides + scheduled sync (build once, run on cron)
Webhook-driven sync (real-time, event-based) where the tool supports it
Low-code platforms (Zapier / Make / n8n) — only where BOTH tools have a supported connector for your edition; confirm coverage before relying on it (and note the ongoing per-task fees)
Custom adapter (full control, no per-task platform fees — but you own hosting, maintenance, and any vendor API access/licensing; requires engineering)

What could flow between the systems

Scope what should actually move between them during discovery:

employees
payroll runs
deductions
tax filings

Complexity

A custom integration here is typically simple. Both tools expose a REST API and offer native integrations, so a working connection is mostly configuration rather than custom development.

Need help building this?

Purcell Analytics can build a custom integration between Brex and TriNet for businesses that want this running reliably without DIY headaches. Schedule a consultation to scope your specific use case, environment, and supported integration paths.