储蓄，是指从收入中不用于消费或将其延迟消费而结余出的一部分资金，存放于在银行开设的个人账户内，经过一段时间后可获得利息的个人理财方式。储蓄方法包括把金钱存入银行作存款，或者储起作退休计划，也包括减少支出，例如节省经常性开支。从个人财务策划的角度来说，储蓄特指低风险保存资金，例如使用存款户口累积资产，而非进行较高风险的投资。

对于什么才算作储蓄，仍存在争议。例如，个人收入一部分用于偿还按揭贷款，而非即时消费，这可能符合储蓄的广义，但未必每个人也同意偿还贷款是一种储蓄行为，因为那笔还款金额已非归属个人所有。在美国，计算国民生产总值时，一般不把利息还款算作“储蓄”，除非应收的机构和个人把该笔款项储起。英国经济学家凯恩斯提供一个有关储蓄的简单定义：储蓄的意义是收入超过其被用之于消费的部分。

Saving is income not spent, or deferred consumption. Methods of saving include putting money aside in, for example, a deposit account, a pension account, an investment fund, or as cash. Saving also involves reducing expenditures, such as recurring costs. In terms of personal finance, saving generally specifies low-risk preservation of money, as in a deposit account, versus investment, wherein risk is higher; in economics more broadly, it refers to any income not used for immediate consumption.