Tiglath-Pileser's lineage and there are records of a revolt around the time of his accession, many historians have concluded that Tiglath-Pileser was a usurper, who seized the throne from his predecessor Ashur-nirari V, who was either his brother or his father. Other historians postulate that the evidence could just as easily be interpreted as Tiglath-Pileser inheriting the throne through legitimate means, and the debate remains unresolved.

Tiglath-Pileser increased