base amount

(1) In general The term “base amount” means the product of— (A) the fixed-base percentage, and (B) the average annual gross receipts of the taxpayer for the 4 taxable years preceding the taxable year for which the credit is being determined (hereinafter in this subsection referred to as the “credit year”).


26 USC § 41(c)(1)

Scoping language

in this subsection
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