R.I. Gen. Laws § 44-11-15: Variation of method of allocating income.

If at any time the tax administrator, on his or her own motion or acting upon a complaint by a taxpayer, determines that the methods of allocation provided are inequitable either to the state or to the taxpayer, the tax administrator, after affording the taxpayer reasonable opportunity to be heard, may apply any other method of allocation that is equitable and, if necessary, shall redetermine the tax.

The division of taxation shall establish an independent appeals process to attempt to resolve disputes between the tax administrator and the taxpayer with respect to the method of allocation applied. The decision resulting from the independent appeals process shall not prohibit either party from pursuing any legal remedy otherwise available if the issue is not resolved as a result of the appeal process. The decision resulting from the independent appeals process can be used as evidence.