# Prepaid/Postpaid Accounts The terms "prepaid" and "postpaid" in the context of advertising generally refer to how the payment for advertising services is handled:\ \ **Prepaid**: This means that advertisers pay for their advertising services upfront before the ads are run. Advertisers allocate a budget, and their campaigns run until the prepaid amount is exhausted. This can be a way to control spending and ensure that the budget is adhered to strictly. This service is mandatory for DIY accounts.\ \ **Postpaid**: In this model, advertisers are billed after their ads have been run. They receive an invoice for the advertising services provided, typically based on the actual performance of their ads, such as the number of impressions, clicks, or conversions based on the signed agreement. This allows for more flexibility and can be convenient for businesses that prefer to pay after seeing the results. Note: This is only applicable to agency accounts. Adgebra likely offers these options to accommodate different budgeting preferences and needs of advertisers. For precise details you may contact us at --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.adgebra.co/getting-started/general/prepaid-postpaid-accounts.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.