The SRS is a voluntary scheme to encourage individuals to save more for their retirement, over and above their Central Provident Fund (CPF) savings, with the benefit of tax relief. It began in 2001 and is operated by the private sector.

SRS members can contribute any amount up to a yearly cap of $15,300 for Singaporeans and PRs and $35,700 for foreigners. Every amount of SRS contribution will be eligible for tax relief in the following year of assessment for income tax. SRS contributions may be used to purchase various investment instruments.