---
title: 'BILL + Sellsy'
url: 'https://www.staging38.commercient.com/product/bill-sellsy/'
date: '2026-06-19T11:31:51-04:00'
modified: '2026-06-19T11:31:51-04:00'
author: 'Aaron Torres'
excerpt: 'Commercient SYNC connects BILL to Sellsy, giving your team access to BILL data directly within Sellsy. No complex coding required.'
featured_image: 'https://www.staging38.commercient.com/wp-content/uploads/2026/06/Commercient-Product-Image.webp'
language: en-US
post_type: product
woocommerce:
  price: '0 USD'
  stock_status: instock
  attributes: { Product: SYNC }
---

Commercient connects BILL and Sellsy, keeping key business data aligned between both platforms. The integration is scoped per project to cover the objects and directions that match each customer’s specific workflow.

## What syncs

- Import Sellsy Records into BILL
- Sync BILL Customer Records to Sellsy
- Export BILL Orders and Transactions to Sellsy
- Update Sellsy Product Data from BILL
- Sync BILL Inventory Levels to Sellsy
- Import Sellsy Data into BILL Records

## Why Commercient

### Quote and estimate management

Connect BILL Quotes to Sellsy so quoting activity is visible and consistent across both systems for sales and operations.

### Customer data alignment

Sync BILL Customers to Sellsy so both platforms share accurate and up-to-date customer information for operations and account management.

### Order and transaction sync

Export BILL Sales Orders and transactions to Sellsy to keep operational data aligned and support accurate workflow management across both systems.

### Product and inventory management

Update BILL Items and Inventory data in Sellsy so teams have current product information available in both platforms.

## About BILL

BILL is a financial operations platform for small and mid-size businesses, managing accounts payable, accounts receivable, invoices, payments and cash flow.

## About Sellsy

Sellsy is a CRM, invoicing and business management platform for French small and mid-size businesses, managing contacts, opportunities, quotes, invoices and financial tracking.

## Frequently asked questions

### What happens if a customer already exists in both BILL and Sellsy?

Commercient handles duplicate customer matching during implementation using configurable matching criteria such as account name, email or customer code. The matching logic is agreed during the scoping and setup process to prevent duplicate records.

### What data can Commercient connect between BILL and Sellsy?

Commercient can synchronise key BILL ERP data with Sellsy, such as Customers, Contacts, Items, Inventory, Sales Orders, Invoices and Payments. Supported objects and sync direction depend on the customer's system setup and project scope.

### Can BILL Customers sync into Sellsy Companies and Contacts?

Yes, Commercient can sync BILL Customers into Sellsy as Companies and Contacts. This gives sales teams access to ERP account data from inside the CRM. Exact field mapping and sync frequency are configured per project.

### Can Sellsy Deals be connected back to BILL as Sales Orders?

Commercient can support connecting Sellsy Deals back to BILL as Sales Orders when included in the integration scope. This allows approved CRM deals to flow into ERP fulfilment workflows. Two-way sync capability depends on project configuration.

### How often does the BILL and Sellsy sync run?

Commercient typically runs on a scheduled sync, with frequency configurable based on business requirements. Near-real-time and scheduled batch options are available depending on system capabilities and project scope.