all expenses; total cost
Refers to the entirety of costs or expenses, often used in formal or business contexts when specifying that all costs are covered or included.
The company will cover all expenses, including transportation and accommodation.
Please apply with the all-inclusive plan.
一切 means 'all' or 'everything' and can be used more broadly; 費用一切 specifically refers to all expenses.
費用 means 'cost' or 'expense' in general; 費用一切 emphasizes the totality of expenses.
Compound of 費用 (expenses) and 一切 (all, everything).