The amount of money you have been providing me with has been minuscule, just a bare minimum of support a loyal wife and mother might expect.

你拿来养家的钱实在是微乎其微，就是一位忠实的妻子和母亲所能企盼的勉强维持生计所需的最低数额。

youdao

If a quarter buys 3 gumballs, what is the minimum amount of money that must be spent before 3 gumballs of the same color are dispensed?

如果一个季度购买3口香糖，什么是金钱的最低金额必须花前3相同颜色的口香糖都配？

youdao

Small amounts of money can be transferred via PayPal, which does not require a minimum transfer amount, although transactions do incur a charge, currently set at 3.9%.

BBC: How to budget for living abroad