The Residential Tenancies Act (RTA) is legislation by the Western Australian Parliament to regulate the relationship between owners and tenants. It was first established in 1987, but was modernised, updated and amended in 2013. It establishes the rule of law to ensure the business relationship between the property owner and the tenants is fair and reasonable to both parties. It applies rights and responsibilities on both parties that must be adhered to. The most recent amendments to the RTA came into effect on 1 July 2013.