Currently, the Denneroll is available in three sizesâfor tall or flexible adults (gray Denneroll), average or stiffer adults (white Denneroll), and small adults or pediatric patients (gold Denneroll)âthe Denneroll Cervical Orthotic Device is an important addition to your patient-care inventory.
Length of time to keep, and why:Seven years. 1  The IRS has three years from your filing date to audit your return if it suspects good-faith errors. 2  The three-year deadline also applies if you discover a mistake in your return and decide to file an amended return to claim a refund.
Best Answer: The statute of limitations for auditing federal tax returns is 3 years and under certain circumstances 6 years. So the general recommendation is to keep the current year return, plus six past year returns, and all the supporting documentation. This makes 7 years. Some state tax laws have longer statutes of limitation and, therefore, sometimes a few additional years of returns and documents should be kept.