Based on the information given Calvin's tax basis in his 60 shares at year-end is $4,870.
Using this formula
Tax basis=Beginning cash-Nontaxable return of capital
Where:
Beginning cash=$5,000
Nontaxable return of capital=$130
Let plug in the formula
Tax basis=$5,000-$130
Tax basis=$4,870
Inconclusion Calvin's tax basis in his 60 shares at year-end is $4,870.
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