Generally, a taxpayer may correct an error in a tax return without incurring interest or penalties by filing an amended return and paying any additional tax due on or before the due date (last day prescribed for filing). An amended return filed after the due date may be accepted, rejected, or ignored by the IRS in its sole discretion. It has been held that where the taxpayer files a false or fraudulent tax return but later... Steven R. Diamond, CPA, USTCP