Updates for Partner program usage fees

Author: pzaichkina

docs/integrations/accounting/quickbooksonline/accounting-quickbooksonline.md

@@ -15,6 +15,52 @@ This integration supports the ability to include additional fields within our st
 
 See [Set up the QuickBooks Online integration](/integrations/accounting/quickbooksonline/accounting-quickbooksonline-new-setup) to learn how to set up and enable the integration.
 
+## Intuit App Partner Program
+
+Intuit's [App Partner Program](https://blogs.intuit.com/2025/05/15/introducing-the-intuit-app-partner-program/) supports providers of applications built on Intuit's platform with higher security standards, early access to new features, and more reliable data synchronization.
+
+If you plan to publish an app in the QuickBooks ecosystem, you must register with the partner program and fill in the [app assessment questionnnaire](https://help.developer.intuit.com/s/article/New-app-assessment-process-FAQ). We created an [App assessment questionnaire guide](/integrations/accounting/quickbooksonline/qbo-app-assessment-questionnaire) to help you answer its questions.
+
+#### Tiered usage model
+
+The Intuit App Partner Program operates a tiered usage model. Under this model, Intuit classifies API calls into two categories:
+
+- Core API calls - free and unlimited routine tasks, such as creating or updating invoices, bills, and customers
+- CorePlus API calls - data-heavy tasks, such as running reports or retrieving deep historical data 
+
+The [API classification for the Intuit App Partner Program](https://help.developer.intuit.com/s/article/API-classification-for-the-Intuit-App-Partner-Program) article explains how API calls are classified into Core and CorePlus.
+
+:::caution Track API call usage to avoid extra charges
+
+Each tier is allocated a monthly limit of CorePlus API calls, and exceeding this limit may result in additional charges. Track your app's usage of API calls to avoid this.
+
+:::
+
+#### Track usage
+
+To avoid unexpected costs, track your app's usage of API calls following these steps:
+
+1. Log in to the [Intuit Developer Portal](https://developer.intuit.com/dashboard?tab=apps).
+2. Navigate to the _App dashboard_ and select the app you want to review. 
+3. In the left-hand menu, click **Analytics**.
+4. In _Analytics_, toggle the environment to **Production**. You will see a chart detailing your Core and CorePlus usage.
+
+#### Optimize usage
+
+Optimizing your API call usage may reduce the overall fees owed to Intuit. We recommend the following:
+
+- Limit the number of data refresh requests built into your product.
+- Adjust the frequency of data type syncs to our recommended levels.
+
+If you have questions about optimization, reach out to your Account Manager.
+
+## Additional information
+
+- [QuickBooks Online FAQ](/integrations/accounting/quickbooksonline/faq-quickbooks-online)
+- [QuickBooks Online integration reference](/integrations/accounting/quickbooksonline/quickbooks-online-integration-reference)
+- [Intuit App Partner Program](https://blogs.intuit.com/2025/05/15/introducing-the-intuit-app-partner-program/)
+- [App assessment questionnaire guide](/integrations/accounting/quickbooksonline/qbo-app-assessment-questionnaire)
+
 ## Additional information
 
 - [QuickBooks Online FAQ](/integrations/accounting/quickbooksonline/faq-quickbooks-online)