Integration · 2026
Connect Xero to Klaviyo
Automatically sync data from Xero into Klaviyo. Ikaroa designs, builds and maintains a reliable Xero → Klaviyo integration so your tools stay in perfect sync.
TL;DR
Connecting Xero to Klaviyo lets you automatically move invoices, bills and contacts from Xero into Klaviyo, so your team stops copying data by hand. Xero is cloud accounting software for small business; Klaviyo is email and SMS marketing built for ecommerce. The integration can be built with a native connector, a tool like Zapier or Make, or a custom API integration for full control. Ikaroa builds and maintains the connection for you.
How do you connect Xero to Klaviyo?
You can connect Xero to Klaviyo in three ways: a native integration if one exists, a no-code automation platform such as Zapier or Make, or a custom API integration built directly against the Xero and Klaviyo APIs. The right choice depends on data volume, how real-time the sync needs to be, and how much custom logic you require. For business-critical or high-volume syncs, a custom API integration is the most reliable. Ikaroa designs, builds and maintains Xero → Klaviyo integrations end to end.
Teams that rely on both Xero and Klaviyo usually hit the same wall: the two tools don't talk to each other. Xero handles bookkeeping, invoicing and financial reporting, while Klaviyo is used for running email and lifecycle marketing campaigns. Without an integration, someone ends up exporting spreadsheets, re-keying records and reconciling mismatches by hand, which is slow, error-prone and doesn't scale. A proper Xero to Klaviyo integration removes that friction by keeping data flowing automatically from one system to the other.
Why integrate Xero with Klaviyo?
Stop manual data entry
Every time an invoice is paid in Xero, the relevant data is pushed straight into Klaviyo. No exports, no copy-paste, no stale records.
One source of truth
Keep invoices, bills and contacts consistent across Xero and Klaviyo so every team is working from the same numbers.
Faster, automated workflows
Trigger actions in Klaviyo, like add or update a subscriber and tag a contact, the moment an invoice is paid in Xero, with no human in the loop.
Fewer costly errors
Automated syncing eliminates the typos, missed records and duplicates that come with moving invoices and bills between systems by hand.
What data syncs from Xero to Klaviyo?
| Data | What happens |
|---|---|
| Invoices | When invoices are created or updated in Xero, they are synced into Klaviyo so your email marketing platform stays current. |
| Bills | When bills are created or updated in Xero, they are synced into Klaviyo so your email marketing platform stays current. |
| Contacts | When contacts are created or updated in Xero, they are synced into Klaviyo so your email marketing platform stays current. |
| Transactions | When transactions are created or updated in Xero, they are synced into Klaviyo so your email marketing platform stays current. |
| Expenses | When expenses are created or updated in Xero, they are synced into Klaviyo so your email marketing platform stays current. |
Popular Xero to Klaviyo automations
- →When an invoice is paid in Xero, automatically add or update a subscriber in Klaviyo.
- →Keep invoices and bills in Xero and Klaviyo in sync in both directions.
- →When a bill is created in Xero, tag a contact in Klaviyo and notify the team.
- →Enrich Klaviyo records with invoices and bills pulled from Xero on a schedule.
Ways to connect Xero and Klaviyo
Native integration
If Xero and Klaviyo offer an official connector, this is the quickest path. It covers common fields out of the box, but native connectors are often limited in which invoices and bills they sync and how much you can customise the mapping.
Best for: simple, standard use cases with low data volume
No-code automation (Zapier / Make)
Tools like Zapier and Make connect Xero and Klaviyo with visual workflows. Great for getting started fast and for moderate volumes, though per-task pricing and rate limits can add up, and complex logic gets hard to maintain.
Best for: moderate volume and quick wins without engineering
Custom API integration
A bespoke integration built directly against the Xero and Klaviyo APIs gives you full control: exact field mapping, custom business logic, real-time webhooks, error handling and retries. This is what Ikaroa builds for business-critical syncs that need to be reliable at scale.
Best for: high volume, real-time, business-critical syncs and custom logic
How Ikaroa builds your Xero → Klaviyo integration
- 1
Map the data and the goal
We start by defining exactly which invoices, bills and contacts need to move from Xero to Klaviyo, in which direction, how often, and what should happen on edge cases like duplicates or failures.
- 2
Choose the right method
Based on your volume, real-time needs and budget, we recommend native, no-code or a custom API integration between Xero and Klaviyo, and explain the trade-offs in plain language.
- 3
Build and connect securely
We authenticate against Xero and Klaviyo using OAuth or API keys, build the field mapping and transformation logic, and set up webhooks or scheduled syncs so data flows automatically.
- 4
Test, monitor and maintain
We test against real invoices and bills, add logging, alerting and automatic retries, then monitor the Xero → Klaviyo integration so it keeps working as both platforms evolve.
Get your Xero to Klaviyo integration built
Tell us what you need to sync between Xero and Klaviyo. We scope it, then reply within one working day with a fixed quote. No obligation.
Xero to Klaviyo integration FAQ
How do I connect Xero to Klaviyo?
There are three main ways to connect Xero to Klaviyo: a native integration (if available), a no-code automation tool like Zapier or Make, or a custom API integration built against the Xero and Klaviyo APIs. For occasional, simple syncs a no-code tool is fine; for reliable, high-volume or real-time syncing of invoices and bills, a custom integration is best. Ikaroa can build and manage it for you.
Can I sync Xero and Klaviyo in real time?
Yes. Using webhooks from Xero, changes can be pushed to Klaviyo within seconds instead of waiting for a scheduled batch. Real-time syncing is best handled with a custom API integration, which Ikaroa builds with proper retries and error handling so nothing is lost.
What data can I sync between Xero and Klaviyo?
Commonly synced data includes invoices, bills, contacts and transactions. The exact fields depend on your setup. Ikaroa maps your Xero data to the right objects in Klaviyo and handles any transformations needed in between.
Do I need Zapier to integrate Xero with Klaviyo?
No. Zapier or Make are convenient for simple automations, but they are not required. A direct, custom Xero to Klaviyo API integration avoids per-task fees and rate limits, and gives you more control over reliability and logic. Ikaroa builds both no-code and custom integrations depending on what fits your needs.
How much does a Xero to Klaviyo integration cost?
It depends on complexity: a simple one-way sync of invoices and bills is far cheaper than a real-time, two-way integration with custom logic. Ikaroa scopes the work up front and gives you a fixed quote. Get in touch for a tailored estimate for your Xero → Klaviyo integration.
Is the Xero Klaviyo integration secure?
Yes. We connect to Xero and Klaviyo using their official APIs with OAuth or scoped API keys, never store credentials in plaintext, and follow least-privilege access. All data in transit is encrypted, and we can host the integration in your own cloud if required.
Related integrations
Reverse direction
Klaviyo to Xero →More Xero integrations