What is the most effective of the female contraceptives?

Implanon/Nexplanon: At this point the Implanon (single capsule inserted under skin in arm) is considered most effective form of birth control. It has shown slight more effectiveness than tubal ligation and vasectomy. This is occasionally debated- but at the very least it is equivalent to these more permanent methods. Iud is also a very effective form of birth control.