Uniform civil code is a constitutional mandate to replace the personal laws based on the scriptures and customs of each major religious community in India with a common set governing every citizen. Article 44 of the Directive Principles sets its implementation as duty of the State. Apart from being an important issue regarding secularism in India, it became one of the most controversial topics in contemporary politics during the Shah Bano case in 1985. The debate then focused on the Muslim Personal Law, which is partially based on the Sharia law and remains unreformed since 1937, permitting unilateral divorce, polygamy in the country and putting it among the nations legally applying the Sharia law. The Bano case made it a politicised public issue focused on identity politics—by means of attacking specific religious minorities versus protecting its cultural identity. In contemporary politics, the Bharatiya Janta Party and the Left support it while the Congress Party and All India Muslim Personal Law Board oppose it.
Personal laws are distinguished from public law and cover marriage, divorce, inheritance, adoption and maintenance. Goa has a common family law, thus being the only Indian state to have a uniform civil code. The Special Marriage Act, 1954 permits any citizen to have a civil marriage outside the realm of any specific religious personal law.