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.
Under-report your income by 25 percent or more, and they can audit you up to six years after you file. And if you donât file at all, there is no cutoff â you can be audited indefinitely. So for this tax year and two years previous, you need to keep copies of your returns along with these documents: Receipts showing cash contributions to charity. Medical expenses not covered by insurance. Work-related expenses you paid, but not paid by your employer, and.