[3] The term perbromate also refers to a compound that contains the BrO−4 anion or the –OBrO3 functional group.

Attempted syntheses of perbromates were unsuccessful until 1968, when it was finally obtained by the beta decay of selenium-83 in a selenate salt:[4][5] Subsequently, it was successfully synthesized again by the electrolysis of LiBrO3, although only in low yield.

[2] One effective method of producing perbromate is by the oxidation of bromate with fluorine under alkaline conditions:[2][8] This synthesis is much easier to perform on a large scale than the electrolysis route or oxidation by xenon difluoride.

The reaction (and its perchlorate analogue) occurs naturally, but very slowly, requiring several days to complete.

[9] Diperiodatonickelate anions in alkaline solution can oxidise bromate to perbromate.