This article contributes to conversations about creative sovereignties by exploring what truly ‘nation-to-nation’ fiscal relationships might look like between Canada and Treaty 6 First Nations if Treaty 6 were taken seriously. Since fiscal relations between Indigenous peoples and settler colonial states often perpetuate colonial sovereignty, reimagining fiscal relations in a historical treaty context offers creative opportunities for decolonization. The article first examines the history of the 1876 Treaty 6 and the relationships Treaty 6 created. It is established that Treaty 6 created nation-to-nation relationships that were based on the desire for mutually beneficial relations in a shared space, and that treaty included fiscal obligations for Canada. Since 1876, including today, fiscal relations between Canada and First Nations have generally been inconsistent with the spirit and intent of treaty. The article proceeds to offer examples of changes that could be made to create fiscal relationships consistent with treaty. Some of these recommendations are relatively pragmatic and would come at little political, fiscal, or constitutional cost to Canada, while others are more dramatic, and would involve a fundamental reshaping of Canada as we know it.