All API integrations Xero API

Xero API Integration

Xero is where the numbers end up. We connect it to the systems that generate them, so the accounts reflect the business without anyone retyping an invoice.

Overview

What the Xero API actually gives you.

Accounting integration is unglamorous and pays for itself faster than almost anything else we build. Every invoice typed in by hand is time spent and an opportunity for error, and every month spent reconciling by eye is a month where discrepancies hide.

Connecting Xero to the systems where sales and costs actually originate means invoices and bills are created from the source record, payments are matched automatically, and the difference between what you sold and what you were paid becomes visible quickly rather than at year end.

Capabilities

The parts you will actually use.

  • Invoices — created and updated from orders, bookings, or usage, with the right line detail and tax treatment.
  • Bills & purchases — supplier costs captured against the revenue they relate to, which is what makes margin visible.
  • Payments & reconciliation — payments matched to invoices, and the exceptions surfaced rather than silently left.
  • Contacts — customers and suppliers consistent with your CRM and operational systems.
  • Tracking categories — so reporting can be sliced the way the business actually thinks about itself.
  • Reporting — accounting data joined to operational data for real per-product or per-channel margin.
Scope

Where these projects actually get hard.

Reading the documentation is the easy half. These are the areas that decide whether an integration takes weeks or months — and the ones we scope carefully before quoting.

  • Accounting integrations must be idempotent. A retry that creates a second invoice does not just leave a defect — it leaves books that no longer reconcile. Every write needs to be safe to repeat.
  • Tax is genuinely complicated. Rates, treatments, and cross-border rules are not details to be sorted out later; they determine the structure of what you create.
  • Never silently overwrite. Once a period is reconciled or closed, an integration that changes historical records creates problems that take an accountant to unpick.
  • Matching is the hard part. Linking a payment to the right invoice across systems with different references is where most of the real effort goes.
  • Multi-currency. Exchange rates, when they are applied, and how differences are treated all have to be decided deliberately and consistently.
  • Partial failure needs handling. A sync that stops halfway through a batch must be resumable without duplicating what it already did.
Our take

Which route is right for you.

The most valuable accounting integration is usually not the invoicing — it is the reconciliation. Matching what a platform paid you against what you believe you sold, and against what the supplier charged, is where businesses discover revenue they were quietly losing.

We build that, and we build it to flag discrepancies rather than absorb them. If Xero's subscription does not suit your scale, we also host and manage Akaunting and Invoice Ninja — though for most businesses with an accountant, staying on Xero and integrating it well is the better answer, and we will say so.

What we build

Work we take on.

  • Automated invoicing — invoices raised from orders, bookings, or usage without manual entry.
  • Supplier bill capture — costs recorded against the revenue they belong to.
  • Payment reconciliation — payments matched automatically, exceptions reported.
  • Platform payout reconciliation — marketplace statements checked against your own records and supplier costs.
  • Margin reporting — accounting data joined to operational data for per-product and per-channel profitability.
  • Hosted & monitored — because an accounting sync that stops without anyone noticing is worse than not having one.
FAQ

Common questions

Can invoices be created automatically from our bookings or orders?

Yes, and it is normally the quickest win available. The essential requirement is that every write is idempotent — a retry must never create a second invoice, because the result is not just a defect, it is books that no longer reconcile.

Can you reconcile marketplace payouts against our sales?

Yes, and it is often the most valuable work we do. Platform statements rarely map one-to-one onto bookings, and doing the match properly tends to surface money that was quietly going missing.

What about VAT and cross-border tax?

It has to be designed in from the start rather than patched on, because tax treatment affects how records are structured. We will work to your accountant's requirements rather than guessing — and we will ask.

Will an integration mess up our closed periods?

Not if it is built correctly. Integrations must never silently alter reconciled or closed records; corrections belong in the current period where your accountant can see them. We treat that as a hard rule.

Is Xero the right tool, or should we self-host?

For most businesses with an accountant, Xero is the right answer and integrating it well is the better investment. Where the subscription genuinely does not fit, we host and manage Akaunting and Invoice Ninja — but we would not push you off a tool your accountant works in.

Tired of retyping invoices? Let's automate it.

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