Settlement deed

A gift ( or sometimes termed as gift  settlement in queries) can be by anyone to anyone.

Gift is without consideration.

Waiver for stamp duty is available in some states amongst list of relatives/blood relations.

Otherwise stamp duty is as per local sate rules.

Check locally in SRO for the year of your preference.

It might also be on website of dept of registering authority.

Local senior deedwriters or counsels handling such matters might also be having yearly notifications and can help you.