What is another word for that is all?
Pronunciation: [ðat ɪz ˈɔːl] (IPA) 
When we want to signify that there is nothing more to say or add to a conversation, we often say "that is all." However, there are many synonyms that can be used to convey the same message. "That concludes our discussion," "our conversation has ended," "that's all she wrote," "we have covered all we need to," are all examples of phrases that can be used to wrap up a discussion or a presentation. Similarly, "nothing else to add," "no further comments," "that's it," "no more to discuss," and "case closed" all deliver the same implication that the conversation has concluded and that no additional information needs to be shared.
