Thank you for your quick response.  Sorry if this is a duplicate, not sure the first comment went through.  This is for a S-Corp passthrough with a loss carry forward that has been limited by basis and so the basis schedule is included as a statement on the tax return.  I agree that beginning basis in the cy would be 0 if the payments had been properly reported in their perspective years.  However, they were not and therefore there would have been losses allowed in prior years that were not taken because the additional amounts invested were not reported.   There's no intent to double-dip but could the payments made in prior years and not reported be included in the basis calculation during the current year?  Or should amended returns be filed to claim the losses allowed in the years the payments were made?