> For the complete documentation index, see [llms.txt](https://docs.rillet.com/EjmEP4KZ9BVp9j2ho4Mh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rillet.com/EjmEP4KZ9BVp9j2ho4Mh/integrations/expense-management/bill-integration.md). # BILL Integration The **BILL** integration helps keep vendors, bills, payments, and supporting documents aligned so your financial data stays up to date in **Rillet**. Use the articles below for in-depth guidance directly from **BILL**'s knowledge base. ### BILL Payables & Receivables Review these articles to connect **BILL** to a **Rillet** subsidiary and understand which payables data syncs between the two systems. * [**Rillet Sync Setup Guide - BILL Payables & Receivables**](https://help.bill.com/direct/s/article/000004807): Step-by-step instructions for connecting **BILL** to a **Rillet** subsidiary, configuring the API key and webhook, and selecting an AP payment sync option. * [**Sync Matrix for Rillet - BILL Payables & Receivables**](https://help.bill.com/direct/s/article/000004806): Reference table showing which objects sync between **BILL Payables & Receivables** and **Rillet**, including sync direction and supported features. ### BILL Spend & Expense Explore these articles to connect and configure the **BILL Spend & Expense** integration and understand which card transaction and reimbursement data syncs with **Rillet**. * [**Connect Rillet Integration in BILL Spend & Expense**](https://help.bill.com/direct/s/article/000004798): Instructions for generating your **Rillet** API key and webhook, then completing the connection setup in **BILL Spend & Expense**. * [**Configure Rillet Integration Settings in BILL Spend & Expense**](https://help.bill.com/direct/s/article/000004797): Guidance on managing integration settings after setup, including auto-sync, **Transaction Posting Date**, **Memo Field Content**, and reimbursement configuration. * [**Sync Matrix for Rillet - BILL Spend & Expense**](https://help.bill.com/direct/s/article/000004799): Reference table showing which Spend & Expense objects sync to **Rillet**, including supported sync directions and known limitations. ### See Also To learn more about the BILL integration in **Rillet**, review these articles: * [**Access Your Integrations Management Page**](/EjmEP4KZ9BVp9j2ho4Mh/integrations/expense-management/access-your-integrations-management-page.md) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.rillet.com/EjmEP4KZ9BVp9j2ho4Mh/integrations/expense-management/bill-integration.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.