as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
what's the appropriate way to signify an s-corp?
user
subchapter s corporations are a special type of corporation; the difference is how they are taxed, not how they relate to their vendors or customers.  as a result, they are named the same way as any other corporation. the rules on names of corporations vary by state.  "corporation" and "incorporated" (and their abbreviations) are allowed by every state, but some states allow other names as well.  the wikipedia article "types of business entity" lists an overview of corporation naming rules for each state. the s-corp that i work for has "inc." at the end of its name.
assistant