Lynwood, California - Basic Facts. The City of Lynwood had a population of 72,011 as of July 1, 2016. Lynwood ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in California.
Scanning the information gives you an electronic backup of the paper indefinitely. Keep returns and all supporting documentation at least seven years. The IRS can audit your return for up to three years from your filing date, a limit applying only to good-faith errors.
Keep IRS documents and state income tax returns for at least six years in case the IRS claims you underreported your income by 25 percent or more. Typically, the audit window is three years only, but if you underreported your gross income by 25 percent, the IRS has six years to audit you.