Most income you receive is taxable income that is reported to you and to the Federal/State tax authorities. However, there are a few income-producing events that the IRS has said are not taxable. One of them is renting out your home or vacation property.
The rule: If you receive rental income for less than 15 days per year, that income is generally not taxable income.
Added benefit: In addition to tax-free rental income, you may still deduct your mortgage interest expense and property taxes as itemized deductions. Neither of these tax benefits is reduced with the income from up to two weeks of rental activity.