Xero integrations_

Xero integrates with over 1,000 applications through its marketplace, including Stripe, Dext, GoCardless, Fathom, BrightPay, Karbon, and hundreds of payment, expense, reporting, and practice management tools, making it the most connected accounting platform in the UK and Australia. Native marketplace apps cover basic one-to-one data sync. For firm-specific workflows that connect multiple tools from a single trigger, replace expensive SaaS subscriptions, or automate MTD compliance and multi-entity processes the marketplace doesn’t cover, Formulaic builds custom Xero integrations with no marketplace limits.

Short answer: Xero has 1,000+ marketplace apps for basic sync. Formulaic builds custom integrations that orchestrate 5+ tools from one trigger, automate multi-entity accounting workflows, and replace SaaS subscriptions with systems your firm owns.

What we build that the marketplace can’t

Marketplace apps are one-to-one: Xero syncs with Dext, or Xero syncs with Stripe. Each connection works independently. Your firm’s actual workflows are not independent. They’re chains.

A firm managing 80 client Xero entities needs month-end to trigger automated bank reconciliation with client-specific rules, post adjustment journals, generate Fathom reports enriched with non-financial KPIs, push management accounts to the client portal, and notify the client with a commentary summary. That’s one event per client, five systems, zero manual steps. No marketplace app does this. We build it.

An accounting firm handling MTD for VAT across dozens of clients needs automated data validation before submission, cross-entity reporting for the practice, and exception handling that flags issues before they reach HMRC. That’s not a “Xero to HMRC” integration. That’s a compliance system.

Multi-tool orchestration

The firms we work with don’t need “Xero to X.” They need “when Y happens in Xero, everything else takes care of itself.”

Examples of what a single custom integration handles:

• Month-end close triggered in Karbon → bank reconciliation rules applied per client, adjustment journals posted, Fathom report generated, client management accounts pushed to portal, commentary drafted, client notified
• Payroll processed in BrightPay → journals posted to correct Xero entity with correct nominal codes, pension contributions allocated, employer costs posted, payroll report updated
• Invoice paid via Stripe → payment reconciled automatically, fee allocation posted, client notified, aged debtor tracker updated, revenue report refreshed
• New client onboarded → Xero organisation created, chart of accounts template applied, bank feeds connected, Dext configured, Karbon workflow triggered, team notified

Each of these replaces 15-30 minutes of manual work per occurrence. Across 50+ clients, that’s thousands of hours recovered per year.

Replace SaaS, don’t just integrate it

Most accounting firms run 8-15 SaaS subscriptions alongside Xero. Some of those tools do one thing you actually use, buried inside a product designed for a different audience.

We’ve seen firms paying for a standalone client reporting portal, a separate bank reconciliation tool, a third-party MTD submission service, and an expense approval system — when a single custom system connected to Xero handles all four. Built for their workflows, owned by them, with no per-seat licensing.

The question isn’t “how do we connect all these tools.” It’s “which of these tools can we replace with something better and cheaper that connects to Xero natively.”

We start with the audit: map your current stack, identify what’s redundant, and propose what to build vs what to keep. Some tools earn their subscription. Others are costing you more than a custom replacement.

How we approach Xero integrations

1. Audit your stack — we map every tool connected to Xero, how data flows between them, where the manual steps live, and what’s costing you the most time or money. Two weeks.

2. Design the system — not “which tools to connect” but “what should happen when X occurs.” We design around your workflows, not around tool limitations. The output is a build spec with clear scope.

3. Build and deploy — direct API integration with Xero. No middleware, no Zapier, no per-task fees. The system connects to your infrastructure, handles MTD requirements, and runs with full error handling and monitoring. You own the source code.

No marketplace limits

We don’t need marketplace listings, approved app partners, or pre-built integrations. If a tool has an API, a database, a webhook, or even a CSV export, we can connect it to Xero. We set the rules. We define the logic. We build exactly what your firm needs.

That includes tools Xero’s marketplace doesn’t support, internal systems your firm built years ago, HMRC portals, Companies House filing, legacy Sage migrations, and niche tools like TaxCalc and BrightPay that serve specific accounting workflows.

Compliance across jurisdictions

Every custom Xero integration we build accounts for the regulatory environment your firm operates in. For UK firms: HMRC Making Tax Digital compliance, anti-money laundering checks, UK GDPR data handling, and data residency requirements. For US firms: IRS e-filing requirements, state tax compliance, and data protection standards. For Australian firms: ATO requirements, BAS lodgement, and data sovereignty under the Privacy Act. For Canadian firms: CRA compliance and provincial regulatory requirements.

This is not a bolt-on. Compliance is part of the system architecture from day one. MTD submission validation, audit trails, access controls, and data residency are design decisions, not afterthoughts.

See our accounting solutions for more on what we build for accounting firms, or read about how we approach bank reconciliation automation and client reporting systems that connect to Xero.