(a) No tax credit or credits shall be allowable against any tax or fee imposed under § 12-263q or 12-263r. Notwithstanding any other provision of the general statutes, any health care provider that has been assigned tax credits under § 32-9t for application against the taxes imposed under chapter 211a may further assign such tax credits to another taxpayer or taxpayers one time, provided such other taxpayer or taxpayers may claim such credit only with respect to a taxable year for which the assigning health care provider would have been eligible to claim such credit and such other taxpayer or taxpayers may not further assign such credit. The assigning health care provider shall file with the commissioner information requested by the commissioner regarding such assignments, including but not limited to, the current holders of credits as of the end of the preceding calendar year.

(b) (1) Each taxpayer doing business in this state shall, on or before the last day of January, April, July and October of each year, render to the commissioner a quarterly return, on forms prescribed or furnished by the commissioner and signed by one of the taxpayer’s principal officers, stating specifically the name and location of such taxpayer, the amount of its net patient revenue or resident days during the calendar quarter ending on the last day of the preceding month and such other information as the commissioner deems necessary for the proper administration of this section and the state’s Medicaid program. Except as provided in subdivision (2) of this subsection, the taxes and fees imposed under § 12-263q or 12-263r shall be due and payable on the due date of such return. Each taxpayer shall be required to file such return electronically with the department and to make such payment by electronic funds transfer in the manner provided by chapter 228g, irrespective of whether the taxpayer would have otherwise been required to file such return electronically or to make such payment by electronic funds transfer under the provisions of said chapter.

(2) (A) A taxpayer may file, on or before the due date of a payment of tax or fee imposed under § 12-263q or 12-263r, a request for a reasonable extension of time for such payment for reasons of undue hardship. Undue hardship shall be demonstrated by a showing that such taxpayer is at substantial risk of defaulting on a bond covenant or similar obligation if such taxpayer were to make payment on the due date of the amount for which the extension is requested. Such request shall be filed on forms prescribed by the commissioner and shall include complete information of such taxpayer’s inability, due to undue hardship, to make payment of the tax or fee on or before the due date of such payment. The commissioner shall not grant any extension for a general statement of hardship by the taxpayer or for the convenience of the taxpayer.

(B) The commissioner may grant an extension if the commissioner determines an undue hardship exists. Such extension shall not exceed three months from the original due date of the payment, except that the commissioner may grant an additional extension not exceeding three months from the initial extended due date of the payment (i) upon the filing of a subsequent request by the taxpayer on or before the extended due date of the payment, on forms prescribed by the commissioner, and (ii) upon a showing of extraordinary circumstances, as determined by the commissioner.

(3) If the commissioner grants an extension pursuant to subdivision (2) of this subsection, no penalty shall be imposed and no interest shall accrue during the period of time for which an extension is granted if the taxpayer pays the tax or fee due on or before the extended due date of the payment. If the taxpayer does not pay such tax or fee by the extended due date, a penalty shall be imposed in accordance with subsection (c) of this section and interest shall begin to accrue at a rate of one per cent per month for each month or fraction thereof from the extended due date of such tax or fee until the date of payment.

(c) (1) Except as provided in subdivision (2) of subsection (b) of this section, if any taxpayer fails to pay the amount of tax or fee reported to be due on such taxpayer’s return within the time specified under the provisions of this section, there shall be imposed a penalty equal to ten per cent of such amount due and unpaid, or fifty dollars, whichever is greater. The tax or fee shall bear interest at the rate of one per cent per month or fraction thereof, from the due date of such tax or fee until the date of payment.

(2) If any taxpayer has not made its return within one month of the due date of such return, the commissioner may make such return at any time thereafter, according to the best information obtainable and according to the form prescribed. There shall be added to the tax or fee imposed upon the basis of such return an amount equal to ten per cent of such tax or fee, or fifty dollars, whichever is greater. The tax or fee shall bear interest at the rate of one per cent per month or fraction thereof, from the due date of such tax or fee until the date of payment.

(3) Subject to the provisions of § 12-3a, the commissioner may waive all or part of the penalties provided under this subsection when it is proven to the commissioner’s satisfaction that the failure to pay any tax or fee on time was due to reasonable cause and was not intentional or due to neglect.

(4) The commissioner shall notify the Commissioner of Social Services of any amount delinquent under this section and, upon receipt of such notice, the Commissioner of Social Services shall deduct and withhold such amount from amounts otherwise payable by the Department of Social Services to the delinquent taxpayer.

(d) (1) Any person required under sections 12-263q to 12-263v, inclusive, to pay any tax or fee, make a return, keep any records or supply any information, who wilfully fails, at the time required by law, to pay such tax or fee, make such return, keep such records or supply such information, shall, in addition to any other penalty provided by law, be fined not more than one thousand dollars or imprisoned not more than one year, or both. As used in this subsection, “person” includes any officer or employee of a taxpayer under a duty to pay such tax or fee, make such return, keep such records or supply such information. Notwithstanding the provisions of § 54-193, no person shall be prosecuted for a violation of the provisions of this subsection committed on or after July 1, 1997, except within three years next after such violation has been committed.

(2) Any person who wilfully delivers or discloses to the commissioner or the commissioner’s authorized agent any list, return, account, statement or other document, known by such person to be fraudulent or false in any material matter, shall, in addition to any other penalty provided by law, be guilty of a class D felony. No person shall be charged with an offense under both this subdivision and subdivision (1) of this subsection in relation to the same tax period but such person may be charged and prosecuted for both such offenses upon the same information.