If your spouse refuses, mutual consent divorce isn't possible, you'd be looking at a contested divorce, filed under grounds like cruelty or desertion (Hindu Marriage Act, Section 13). Contested cases are slower, sometimes taking years, and require solid evidence, which is harder to gather from abroad.
A legal notice is often the first practical step. It formally communicates your intent, creates a legal record, and in many cases prompts the other spouse to reconsider.
Send a legal notice →