Each corporation that receives income from the sources designated in section 57-38-14, whether or not required to file an income tax return pursuant to the provisions of the United States Internal Revenue Code of 1954, as amended, shall, unless exempted by the provisions of section 57-38-09, make a return in such form as the tax commissioner may prescribe, stating specifically such facts as the tax commissioner may require for the purpose of making any computation required by this chapter. Any corporation which is required to file a state income tax return but not required to compute a federal taxable income figure for federal income tax purposes is required to compute such a federal taxable income figure using a pro forma return pursuant to the provisions of the Internal Revenue Code of 1954, as amended, in order to determine a starting point for the computation of state income tax. Any foreign loan and investment company engaged in business in this state, and whose income in this state consists solely of income exempt from taxation under this chapter, need not file an annual report unless specially requested to do so by the tax commissioner, but may file in lieu thereof an affidavit claiming exemption under this chapter. The return must be signed by the president, vice president, treasurer, assistant treasurer, chief accounting officer, or any other officer duly authorized so to act and it and any other declaration, statement, or document required to be made must contain or be verified by a written declaration that it is made under the penalties of perjury. The tax commissioner may prescribe alternative methods for signing, subscribing, or verifying a return filed by electronic means, including telecommunications, that shall have the same validity and consequence as the actual signature and written declaration for a paper return.