Because of the way it is used in databases, Null has some unique characteristics: 1  Expressions involving Null always result in Null. Thus, Null is said to propagate through expressions; if any part of the expression evaluates to Null, the entire expression evaluates to Null.
If the total amount of itemized deductions is more than the standard deduction, a taxpayer can choose to benefit by itemizing. Standard Deduction. Standard deduction, on the other hand, is a particular amount that is deducted to decrease the amount of income chargeable to tax. The deductible amount depends entirely on the filing status of a taxpayer, and increases every year to incorporate the effect of inflation.
4. Itemized deductions vs. business deductions. By taking a business deduction instead of an itemized deduction, you reduce your adjusted gross income and your self-employment tax. Whenever possible, deduct an expense or a portion of an expense as a business expense.. Itemized deductions vs. business deductions. By taking a business deduction instead of an itemized deduction, you reduce your adjusted gross income and your self-employment tax. Whenever possible, deduct an expense or a portion of an expense as a business expense.