(3) Character(i) CST Payments. CST Payments generally will be considered the payor's costs of developing intangibles at the location where such development is conducted. For these purposes, IDCs borne directly by a controlled participant that are deductible are deemed to be reduced to the extent of any CST Payments owed to it by other controlled participants pursuant to the CSA. Each cost sharing payment received by a payee will be treated as coming pro rata from payments made by all payors and will be applied pro rata against the deductions for the taxable year that the payee is allowed in connection with the IDCs. Payments received in excess of such deductions will be treated as in consideration for use of the land and tangible property furnished for purposes of the CSA by the payee. For purposes of the research credit determined under section 41, CST Payments among controlled participants will be treated as provided for intra-group transactions in 1.416(i). Any payment made or received by a taxpayer pursuant to an arrangement that the Commissioner determines not to be a CSA will be subject to the provisions of 1.4821 through 1.4826 and 1.4829. Any payment that in substance constitutes a cost sharing payment will be treated as such for purposes of this section, regardless of its characterization under foreign law.


26 CFR § 1.482-7

Scoping language

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