A construction company completes a three-year, fixed-price contract accounted for using the Percentage-of-Completion Method (PCM) for tax purposes. Upon completion, the total actual profit was higher than estimated in the first two years. What is the primary purpose of the look-back method required under IRC Section 460(b)?
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A
To allow the contractor to amend prior year tax returns to change their accounting method.
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B
To recalculate prior year tax liability using actual costs and pay (or receive) interest on the resulting underpayment (or overpayment) of tax.
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C
To penalize the contractor for inaccurate initial cost estimates.
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D
To determine the final amount of revenue to be recognized in the year of contract completion.