It's important to know the difference between itemized deductions vs standard deductions when you consider your tax options. The standard deduction is a method of reducing taxable income without documenting any expenses, whereas itemized deductions require that you keep track of expenses. Standard Deduction vs. Itemized Deduction can help determine which is the more tax-friendly option. A lot of filers compare standard deductions and itemized deductions each year as their financial situation changes.