With one race to come in Australia, the Toyota driver is 28 points ahead of six-time defending champion Sebastien Ogier of Citroen. Neuville, a Belgian who drives a Hyundai is third.
Tanak was ecstatic about breaking 15 years of French domination.
"Feels good," said the Estonian after winning the final power stage. "It's difficult to say the pressure I felt this weekend - it was next level."