INTEGRATION · XERO
Xero connected to WooCommerce, Shopify Plus, Zenoti, Stripe Connect, custom POS, and custom ERPs. Production deployments across retail, services, and B2B.
Xero is the accounting platform we connect to more often than any other. There is a reason for that: Xero is genuinely well-built, has a strong API, and is the default for the kind of mid-market Australian business we serve. If your accounting runs on Xero, you have already made the right platform choice.
What Xero does not do, and is not trying to do, is be the operational system for your sales, your fulfilment, or your inventory. Those jobs belong to other systems. The integration between Xero and those other systems is where almost every business runs into trouble.
The Xero app marketplace has dozens of “connectors” for common platforms. Some are excellent. Many work on the happy path but break on refunds, partial fulfilments, multi-currency, or anything outside the most common transaction patterns. The result: revenue mostly reconciles, but month-end always has variance that someone fixes manually. The variance is small. The cost of fixing it adds up to a part-time bookkeeping role across the year.
Proper Xero integration removes that manual work. Every sale, every refund, every credit note, every payment flows into Xero with the correct accounting treatment, correct GST, and correct tracking categories. The audit trail explains exactly what happened. The bookkeeper stops finding mystery variances and starts doing actual advisory work.
The honest moment most agencies skip: most Xero stacks do not need custom middleware. If you are doing under $1M in revenue with a single sales channel and a small number of refunds per month, the off-the-shelf Xero connector is genuinely the right answer. We will tell you that directly. About one in four Xero discoveries we run ends with our recommendation to stick with the off-the-shelf connector and just fix the underlying GST or chart-of-accounts setup. That recommendation is the audit deliverable, not a sales failure.
If your Xero month-end requires manual fix-ups, call 0431 000 062.
You probably need proper Xero integration when one or more of the following are true.
DIAGNOSTIC
If three or more describe your situation, the Xero connector is now the bottleneck. Replacing it with proper middleware usually pays back inside 4 to 6 months in bookkeeper time alone.
Every Xero integration we build on Nexus uses the same pattern. The components are deliberately boring. Boring is the point.
Sales, refunds, and customer events from the source system (Shopify, WooCommerce, Zenoti, custom POS, custom ERP) are captured as events. Every state change is preserved, not just the final state. If an order was placed, then partially refunded, then cancelled, all three events make it through.
Each event is transformed into the correct Xero accounting entry. Revenue accounts, GST treatment, tracking categories, and contact records are applied based on rules you define. Edge cases (refunds, store credit, gift cards, multi-currency) are handled correctly. The transformation rules are written down, version-controlled, and reviewed by your accountant before going live. They are not magic.
Transactions are written to Xero through the official Xero API. Rate limits are respected. Failed writes are retried with backoff. Idempotency keys prevent duplicate transactions. When Xero has a regional outage at 10pm on a Sunday, your transactions queue and drain when Xero comes back. Nothing is lost.
Daily reconciliation reports show what was captured, what was written, and what failed. Variance, if any, is visible immediately, not at month-end. The bookkeeper opens the dashboard on Tuesday morning and sees Monday’s discrepancies, while the data is still fresh and the cause is still findable. Month-end stops being a forensic exercise.
Every event, every transformation, every Xero write is logged with timestamps and payloads. When the bookkeeper asks why a specific transaction looks the way it does, the answer is a query, not an investigation. When the auditor asks for evidence of how revenue was recognised across a deferred-revenue subscription, you hand them the calculation log.
We structure Xero integration engagements one of three ways. All three start with discovery.
Call 0431 000 062 to talk through which fits.
Three Xero integration projects. All three names confidential at client request (accounting integrations tend to involve commercially sensitive structures). Reference calls available under NDA.
No account managers, no offshore teams, no juniors learning on your project. The two engineers below scope, build, and ship the work. The bookkeeper or accountant is part of the discovery session and the rules review. The transformation rules are written down in language they recognise, not engineering jargon.
Nicolas Wendell
MANAGING DIRECTOR
Nicolas has been building custom software since leaving school, bringing a lifelong passion for development to every project. Before founding Paladine Systems, he ran his own video game studio and earned multiple accolades in network engineering. Known as a driving force in the custom software world, Nicolas combines deep technical expertise with visionary leadership – guiding Paladine in delivering innovative, enterprise-grade solutions.
Mark Morcom
SENIOR SYSTEMS ENGINEER
Mark is a young prodigy in software development, bringing 5 years of experience to Paladine. Equally at home on the front end and back end, he crafts clean, scalable solutions that power complex applications. Mark’s sharp problem-solving skills and passion for innovation make him a driving force behind Paladine’s most advanced projects.
Xero integration projects run in three phases. Each phase is fixed scope and fixed price.
DISCOVERY
1 to 2 weeks. Map current accounting flows, identify edge cases, map your chart of accounts and tracking categories, produce a written scope and fixed quote.
BUILD
2 to 5 weeks. Stand up Nexus, integrate source systems and Xero, build transformation rules, validate against historical data.
CUTOVER
1 to 2 weeks. Disable the old connector, turn on the new middleware, monitor and reconcile the first weeks.
For most stores, total project time is 4 to 8 weeks. Multi-entity or multi-source deployments run longer.
We are not certified Xero partners. We are Xero API integration specialists. We build custom integrations using the official Xero API. For Xero advisory, bookkeeping, or implementation, we recommend working with a certified Xero advisor in parallel. The two roles are complementary, not competitive.
No. Proper Xero integration makes their job easier, not harder. The variance and manual fix-ups they currently do disappear, which frees them to focus on actual advisory work. We have built integrations specifically scoped with the bookkeeper or accountant in the room. They tell us the rules; we write the code that enforces them.
We integrate primarily with Xero Accounting. The other Xero family products are typically internal to accounting practices, not commercial businesses. If you have a specific need, mention it during discovery. We have integrated Xero Projects and Xero Payroll on specific engagements where the business case justified it.
Yes. Multi-entity Xero (separate Xero files for separate companies) is a common pattern. Nexus routes events to the correct Xero file based on rules you define. Inter-company transactions can be automatically posted to both sides of the journal. Group consolidation logic can be codified and automated.
Yes. Multi-currency transactions, exchange rates, realised and unrealised gains and losses are all handled correctly when the source system provides the right data. If the source system does not provide exchange rate data, Nexus can fetch it from a configured rate provider at the transaction timestamp.
Yes. The most common request. We turn off the existing connector, route the events through Nexus instead, and validate against historical data before going live. No data gap during cutover. The new middleware runs in parallel for the first month while the old connector is monitored for any final discrepancies.
They cover the happy path. For most small businesses, they are perfectly adequate. The cases where they break down (refunds, multi-currency, gift cards, complex subscription billing, deposits) are exactly the cases where custom middleware is needed. About one in four Xero discoveries we run ends with our recommendation to stick with the off-the-shelf integration and just fix the underlying setup.
Call 0431 000 062 or book a discovery call through the form below. The first conversation is run by an engineer. Bring your bookkeeper or accountant to the call if you can. We will tell you whether middleware is the right next step. Sometimes the answer is to fix the chart of accounts and stick with the existing connector, and we will say so.
