Projecting your business income and expenses for this year and next can allow you to time when you recognize income and incur deductible expenses to your tax advantage. Typically, it’s better to defer tax. This might end up being especially true this year, if tax reform legislation is signed into law.
Various limits apply to most tax deductions, and one type of limit is a “floor,” which means expenses are deductible only if they exceed that floor (typically a specific percentage of your income). One example is the medical expense deduction.