Many retirees have a 401(k) or IRA drawn-down strategy that covers regular expenses, such as mortgage payments, and a bigger-than-expected withdrawal could bump them into a higher tax bracket, Ms. Chapman said.

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The allowed deduction is for the business-use percentage of the lease price plus regular expenses (gas and so on) minus a small adjustment (the lease inclusion amount) that is smaller this year than in the past.

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As a measure of that, survey found that 42% of hosts used Airbnb money for regular living expenses.

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Insurance is a bad idea for small, regular and predictable expenses.

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Local and state governments incurred additional expenses paying regular and overtime salaries to state and local scuba divers and police officers.

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And the medical expenses of regular CHC patients are nearly 25 percent lower than those folks who get their care elsewhere -- 25 percent lower.

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Even though the expenses for regular sand and silt removal from dams would be enormous, it is the only available option left before the authorities to keep dams fully functional.

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Commuting expenses to and from your regular place of work (as opposed to travel for work) is never deductible.

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Regular homeowners insurance provides coverage for the cost of additional living expenses if a home is damaged by an insured disaster, such as wind damage or a tree that fell through the roof.

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Some of your savings should be earmarked to cover such expenses, so as not to stifle the flow of your regular income needs.

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