In special cases, a husband can deduct the travel expenses of his wife who accompanies him on a business trip.

在特殊情况下，丈夫可以扣除差旅中随行妻子的旅费。

《柯林斯英汉双解大词典》

What he does is to find out what allowances I can claim, what expenses I can deduct from my income and finally, he calculates the tax I have to pay.

他需要做的就是找出哪些津贴我可以领取，哪些支出可以从我的收入中扣除，最后，他需要计算出我需要偿付的税费。

youdao

If you use your car for business purposes, you ordinarily can deduct car expenses. You generally can use one of the two following methods to figure your deductible expenses.

如果将你的车用于商业目的，你一般可以扣除车辆费用。通常你可以使用以下两种方法之一来作为你可扣除的费用。

youdao

You cannot deduct expenses that are lavish or extravagant or that are for personal purposes.

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You can deduct expenses associated with the carpool, but you must also include payments received as income.

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As owner and landlord, you personally deduct expenses necessary to deliver on the lease agreement, including mortgage interest and depreciation.

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