# Sustainability Like all crypto projects, USDT Piggy Bank is sustained by the continued support of the community and our dedicated team. To provide a solid foundation for the growth of our players' investments, USDT Piggy Bank pays an average **daily return of 5%** according to the current mining efficiency rate. This rate rises and falls as you and other players hire piggies, compound earnings and pocket USDT, a feature which helps to prevent rapid draining of the contract and promotes **long term sustainability**. To help grow and sustain the project, there is a 6% fee on deposits and withdrawals, which goes towards the continuous marketing and development of USDT Piggy Bank. Additionally, we also offer a 10% referral bonus to reward users who share the project and help to grow the USDT Piggy Bank ecosystem. --- # 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://usdt-piggy-bank.gitbook.io/usdt-piggy-bank/project-details/sustainability.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.