Developer Resources


Please note! If you are a new consumer and have not yet created an app with us, then the sandbox functionality will be temporarily unavailable to you, as we are working to improve it as part of the new dev portal experience! If you have an immediate need to test your integration or have any questions on this, please contact support . If you are an existing consumer, you can continue to use the sandbox as you do today, as long as your authenticating with

The sandbox is where you can access the API resources without making real time changes to production data. When accessing Paychex’s sandbox, the end points will be the URL you are accessing with “sandbox” in the beginning of the URL (e.g.,

You can authorize using your application’s same API Key and Secret that is used in production. For your convenience, sample data will be used and returned. You can perform insert, delete, and update tasks and any changes will be reverted after 24 hours as a result of the sandbox refresh. Normal responses are provided (e.g., status, error, objects, etc.).