What This Is
We build custom integrations with Xero’s API that connect your application to Xero’s accounting platform — syncing invoices, contacts, payments, bank transactions, and chart of accounts data so that your business systems and your accounting stay in step without manual double-entry.
Xero’s API covers the full accounting surface: contacts, invoices, credit notes, payments, bank transactions, manual journals, and reporting. We build integrations that push data from your application into Xero (creating invoices when orders complete, syncing customer records from your CRM) and pull data back (payment status, account balances, financial summaries for your dashboards).
These integrations follow the same patterns we use across all API work — a dedicated service layer handling OAuth2 authentication, token refresh, rate limiting, and error recovery. Xero’s API has specific quirks (rate limits, pagination behaviour, webhook verification) that the service layer manages transparently.
When You Need This
Xero API integration makes sense when your application generates financial data that needs to reach your accounting system without manual re-entry. Common scenarios:
- Your application generates invoices or bills and you are manually recreating them in Xero
- Customer records need to stay synchronised between your CRM or business system and Xero’s contact list
- You need payment status from Xero reflected in your application — knowing when invoices have been paid without checking Xero
- Financial reporting in your application needs real account balances, not stale snapshots
- Your team wastes time on reconciliation because the same data exists in two systems and they drift apart
How We Work
Xero integration projects start with data flow mapping — identifying what records move between your application and Xero, in which direction, and what triggers the sync. We map your application’s data model to Xero’s accounting entities and identify where transformations are needed.
We implement OAuth2 authentication with automatic token refresh so the connection stays alive without manual intervention. The service layer handles Xero’s rate limits (60 calls per minute for most endpoints) with request queuing and backoff logic. For high-volume syncs, we batch requests and process them through Laravel’s queue system.
Conflict resolution is designed upfront. When the same record can be edited in both your application and Xero, the integration needs rules for which system wins. We define these rules per entity type based on your workflow — typically the system where the data originates is authoritative.
What You Get
- Invoice sync — invoices created in your application automatically pushed to Xero with line items, tax codes, and due dates
- Contact management — customer and supplier records synchronised between your application and Xero
- Payment tracking — payment status pulled from Xero into your application so you know what has been paid
- Bank transaction sync — transactions flowing between systems for reconciliation support
- Financial data access — account balances and financial summaries available in your application for dashboards and reporting
- OAuth2 management — automatic token refresh with reconnection handling and user notification on auth failures
Technologies We Use
- Xero API — OAuth2 authentication, Accounting API for invoices, contacts, payments, and bank transactions
- Laravel — service layer with token management, rate limiting, request queuing, and error handling
- PostgreSQL — sync state tracking, mapping tables for entity IDs across systems, and conflict resolution records
- Queue workers — batched API calls and webhook processing handled asynchronously
Related Systems
Xero integration typically feeds into systems where financial data intersects with operations — an invoicing system generating the invoices that sync to Xero, a CRM where client financial status is visible, or a reporting dashboard combining accounting data with operational metrics.
Talk to Us About Accounting Integration
If you are manually moving data between your application and Xero, get in touch and we will build the integration that keeps them synchronised.
