The right visa depends on what you plan to do in Indonesia, not how long you hope to stay.
Tourists staying briefly should use VOA. Long-term visitors without employment usually choose B211. Anyone earning income from Indonesian sources must hold a Work KITAS.
Retirees over the eligible age often qualify for a Retirement KITAS, while married couples or families may apply for Family KITAS. Entrepreneurs setting up businesses usually combine a company registration with an Investor KITAS.
Choosing incorrectly can invalidate your stay. Immigration focuses on activity, not intention. If your daily actions don’t match your visa, you’re exposed to legal risk.