A solid-state battery includes: a first current collector layer; a first current collector tab protruding from an edge of the first current collector layer; a first active material layer laminated on the first current collector layer; a second current collector layer; a second current collector tab protruding from an edge of the second current collector layer; a second active material layer laminated on the second current collector layer; and a solid electrolyte layer arranged between the first active material layer and the second active material layer and including a polymer electrolyte, wherein the solid electrolyte layer is arranged so as to cover end surfaces of the first current collector layer and the first active material layer, and the first current collector tab protrudes through the solid electrolyte layer.