CT Scanners. Usually this instrument is used in the medical field, but it is also used in paleontology. In paleontology these are used to identify the reptiles and animals that are found in rocks without actually cracking the rocks.
4. You do not file a return: Keep records indefinitely. 5. You file a claim for credit or refund after you file your return: Keep records for three years from the date you filed your original return or two years from the date you paid the tax, whichever is later. 6. You file a claim for a loss from worthless securities or bad debt deduction: Keep records for seven years. 7.
Ask The Experts: How Long Should Tax Records Be Kept? December 13, 2010 (The Sacramento Bee) How long tax records should be kept and the amount of taxes owed on pension and Social Security income are issues addressed by IRS expert Jesse Weller. QUESTION: How long does the IRS require taxpayers to keep tax records? I hear it ranges from three to 10 years.