noun
minimum amount of money; minimum sum
Refers to the lowest monetary amount required, allowed, or set in a context such as a price, fee, bid, or fine.
このオークションの最低額は千円です。
The minimum bid for this auction is 1,000 yen.
最低額を下回る入札は無効となります。
Bids below the minimum amount will be invalid.
最高額 is the antonym, meaning 'maximum amount of money'.
Compound of 最低 (minimum, lowest) + 額 (amount, sum of money).