A husband who has sex with his wife, who is above the age of 18 and lives with him, with or without her consent, is not seen as rape, in the eyes of the law. However, the husband can be prosecuted for other charges such as domestic violence.
A husband having sex with his wife who is under 18, is considered rape, irrespective of her consenting to it.
If a couple is married, but living separately, then the husband can be convicted of rape if there is no consent. The punishment for the husband is jail time of between two and seven years along with a fine.0