1.  additional outlay
2.  extra expenses

• 1. 额外开支: additional outlay | incidental expenses | extra expense

• 1.公司将考虑到明年的额外开支。
  The company will allow for extra expenditure next year.
  dict.yoduao.com
• 2.信用证包含有不必要的额外开支。
  A letter of credit will involve unnecessary extra charges.
  dict.yoduao.com
• 3.他告诉我这是唯一的额外开支。
  This he assured me was the only encumbrance.
  dict.yoduao.com

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