量入為出（量入爲(wèi)出）　

◎ 量入為出 liàngrù-wéichū

(1) [base one‘s expenditure upon one‘s income;live within income; plan one‘s expenditure in the light of one‘s income]∶支出在數(shù)量或程度上不超過收入

居家過日子要量入為出

(2) [make ends meet; spend no more than one‘s income; stretch one‘s legs according to the coverlet]∶根據(jù)收入情況確定支出限度

并用籌策,計較府庫,量入為出。——《三國志·衛(wèi)覬傳》