Deep vein thrombosis (throm-BO-sis), or DVT, is a blood clot that forms in a vein deep in the body. Blood clots occur when blood thickens and clumps together. Most deep vein blood clots occur in the lower leg or thigh.
See Also: Which Tax Software Is Best for You? The IRS generally has up to three years after the tax-filing deadline to initiate an audit, so keep your tax returns and supporting documents at least that longâin other words, after April 15 this year, hang on to returns and documents for tax years 2012 through 2014 .
Period of Limitations that apply to income tax returns. 1  Keep records for 3 years if situations (4), (5), and (6) below do not apply to you. 2  Keep records for 3 years from the date you filed your original return or 2 years from the date you paid the tax, whichever is later, if you file a claim for credit or refund after you file your return. Keep records for 7 years if you file a claim for a loss from worthless securities or bad debt deduction.