While you might not be able to claim your in-laws as a deduction on your tax returns because you had to feed them at least once a week on Sundays for the entire year, there are people who successfully fought the Internal Revenue Service and claimed odd and extraordinary tax deductions.  One man burned down his home while making illegal drugs because the building he purchased to make the drugs was faulty – – the tax court allowed the deduction even though it involved an illegal activity and the taxpayer was negligent.

For more odd tax deductions that were allowed read, “Extraordinary Tax Deductions.”