Xero and Bill.com Integration Guide

Overview

Xero is a cloud-based accounting platform designed for small and mid-sized businesses, handling invoicing, expense tracking, and financial reporting. Bill.com is a bill management and payment platform that streamlines the entire accounts payable process—from bill capture through approval to payment. When connected, these two platforms eliminate the need to manually enter bill data into Xero, accelerating your close cycle and reducing errors.

This integration is particularly valuable for finance teams managing high bill volumes or those operating across multiple approval workflows. Rather than scanning bills into Bill.com and then re-entering details into Xero, the integration pushes bill data directly into your accounting records.

How the Integration Works

• Bill Capture & Routing: Bills uploaded to Bill.com (via email, portal, or API) are captured and routed through your approval workflow. Once approved, Bill.com sends the bill details to Xero.
• Automatic Journal Entry Creation: Approved bills are converted into bills or expenses in Xero, with line items, amounts, and vendor information pre-populated. This eliminates manual data re-entry.
• Two-Way Sync: Payment status updates flow back from Xero to Bill.com, so your team sees a unified view of bill status across both platforms without toggling between systems.
• Vendor & Account Mapping: The integration maps Bill.com vendors to Xero contacts and routes expenses to the correct GL accounts based on your configuration, ensuring consistency in your chart of accounts.
• Real-Time Reconciliation: As bills are paid in Bill.com, Xero is updated automatically, keeping your cash position and accounts payable aging accurate without manual reconciliation.

Key Features & Capabilities

• Automated Bill-to-Expense Workflow: Bills approved in Bill.com automatically create corresponding expense records in Xero, eliminating duplicate data entry and reducing processing time by up to 80%.
• Multi-Level Approval Routing: Enforce approval hierarchies in Bill.com before bills sync to Xero, ensuring only authorized expenses hit your accounting system.
• Vendor Consolidation: Duplicate vendors across Bill.com and Xero are reconciled, giving you a single source of truth for vendor master data and improving reporting accuracy.
• GL Account Auto-Mapping: Line-item expenses are automatically routed to the correct cost centers or departments in Xero based on pre-configured rules, improving cost allocation and budget tracking.
• Payment Visibility: Track bill status from capture through payment in a single view; Bill.com shows payment status from Xero, and Xero reflects Bill.com’s approval state.
• Audit Trail Preservation: All bill images, approval notes, and payment history remain linked in both systems, supporting compliance and audit requirements.

Setup Difficulty: Medium

Connecting Xero and Bill.com typically takes 15–30 minutes of configuration, with no coding required. You’ll need administrative access to both platforms. The process involves:

• Authorizing Bill.com to connect to your Xero instance via OAuth (a secure login flow).
• Mapping Bill.com vendors to Xero contacts and confirming GL account assignments.
• Testing a sample bill through the workflow to verify data flows correctly.
• Configuring approval workflows in Bill.com to match your internal policies.

Most teams complete this in a single session. If you have complex multi-entity accounting structures or custom approval workflows, allow an extra 30 minutes for configuration.

Integration Limitations & Considerations

While the integration handles most bill-to-expense scenarios, a few edge cases may require manual intervention:

• Multi-Currency Bills: If you operate internationally, verify that currency conversion is handled correctly; some configurations may require manual adjustment.
• Partial Payments: Bills paid in installments may require additional setup to track correctly across both systems.
• Custom Fields: If you use custom fields in Xero (e.g., project codes or cost center tags), confirm these are mapped in the integration setup; not all custom fields sync automatically.
• Recurring Bills: Subscription-based or recurring bills may need special handling; test your workflow with a recurring vendor before rolling out broadly.

Alternatives to Native Integration

If the native Xero–Bill.com integration doesn’t fully meet your needs, consider these alternatives:

• Zapier or Make (formerly Integromat): These automation platforms offer pre-built connectors for Xero and Bill.com, allowing you to build custom workflows (e.g., trigger notifications, update spreadsheets, or sync to other tools). Setup takes 10–20 minutes and requires no coding.
• Custom API Integration: Both Xero and Bill.com expose REST APIs, allowing a developer to build a custom connector tailored to your exact requirements (e.g., conditional routing, complex approval logic, or integration with third-party systems). This approach takes 1–2 weeks but offers maximum flexibility.
• Third-Party Bill Management Platforms: Tools like Expensify, Divvy, or Brex offer built-in Xero connectors and may provide additional features (e.g., corporate card integration, real-time spend visibility) that complement your workflow.

Frequently Asked Questions

Does the integration support multi-entity accounting?

Yes, if you operate multiple legal entities or cost centers in Xero, the integration can route bills to the correct entity based on Bill.com vendor or department assignments. Confirm your entity mapping during setup to avoid bills posting to the wrong company.

What happens if a bill is rejected in Bill.com after it syncs to Xero?

If a bill is rejected in Bill.com’s approval workflow before it reaches Xero, it will not sync. If a bill has already synced and is then rejected in Bill.com, you’ll need to manually delete or reverse the entry in Xero. Best practice is to enforce all approvals in Bill.com before the sync occurs.

Can I map Bill.com expense categories to Xero GL accounts automatically?

Yes, during integration setup you can configure rules that route Bill.com expense categories to specific Xero GL accounts. This ensures consistent coding and reduces manual classification errors. You can also override the mapping on a per-bill basis if needed.

Does the integration work with Bill.com’s payment features?

The integration focuses on bill capture and approval. Payment processing in Bill.com (ACH, check, credit card) occurs independently, but payment status updates sync back to Xero, keeping your cash and AP records in sync without additional manual steps.

Disclaimer

Integration features and capabilities may change as Xero and Bill.com release updates. This guide reflects general integration functionality as of the publication date. Always verify current capabilities and supported features on the official Xero and Bill.com integration documentation or contact their support teams before making a final decision.