Subchapter B - General Powers and Duties

26 USC 7621 - Internal revenue districts

(a) Establishment and alteration 
The President shall establish convenient internal revenue districts for the purpose of administering the internal revenue laws. The President may from time to time alter such districts.
(b) Boundaries 
For the purpose mentioned in subsection (a), the President may subdivide any State, or the District of Columbia, or may unite into one district two or more States.

26 USC 7622 - Authority to administer oaths and certify

(a) Internal revenue personnel 
Every officer or employee of the Treasury Department designated by the Secretary for that purpose is authorized to administer such oaths or affirmations and to certify to such papers as may be necessary under the internal revenue laws or regulations made thereunder.
(b) Others 
Any oath or affirmation required or authorized under any internal revenue law or under any regulations made thereunder may be administered by any person authorized to administer oaths for general purposes by the law of the United States, or of any State or possession of the United States, or of the District of Columbia, wherein such oath or affirmation is administered. This subsection shall not be construed as an exclusive enumeration of the persons who may administer such oaths or affirmations.

26 USC 7623 - Expenses of detection of underpayments and fraud, etc.

(a) In general 
The Secretary, under regulations prescribed by the Secretary, is authorized to pay such sums as he deems necessary for
(1) detecting underpayments of tax, or
(2) detecting and bringing to trial and punishment persons guilty of violating the internal revenue laws or conniving at the same,

in cases where such expenses are not otherwise provided for by law. Any amount payable under the preceding sentence shall be paid from the proceeds of amounts collected by reason of the information provided, and any amount so collected shall be available for such payments.

(b) Awards to whistleblowers 

(1) In general 
If the Secretary proceeds with any administrative or judicial action described in subsection (a) based on information brought to the Secretarys attention by an individual, such individual shall, subject to paragraph (2), receive as an award at least 15 percent but not more than 30 percent of the collected proceeds (including penalties, interest, additions to tax, and additional amounts) resulting from the action (including any related actions) or from any settlement in response to such action. The determination of the amount of such award by the Whistleblower Office shall depend upon the extent to which the individual substantially contributed to such action.
(2) Award in case of less substantial contribution 

(A) In general 
In the event the action described in paragraph (1) is one which the Whistleblower Office determines to be based principally on disclosures of specific allegations (other than information provided by the individual described in paragraph (1)) resulting from a judicial or administrative hearing, from a governmental report, hearing, audit, or investigation, or from the news media, the Whistleblower Office may award such sums as it considers appropriate, but in no case more than 10 percent of the collected proceeds (including penalties, interest, additions to tax, and additional amounts) resulting from the action (including any related actions) or from any settlement in response to such action, taking into account the significance of the individuals information and the role of such individual and any legal representative of such individual in contributing to such action.
(B) Nonapplication of paragraph where individual is original source of information 
Subparagraph (A) shall not apply if the information resulting in the initiation of the action described in paragraph (1) was originally provided by the individual described in paragraph (1).
(3) Reduction in or denial of award 
If the Whistleblower Office determines that the claim for an award under paragraph (1) or (2) is brought by an individual who planned and initiated the actions that led to the underpayment of tax or actions described in subsection (a)(2), then the Whistleblower Office may appropriately reduce such award. If such individual is convicted of criminal conduct arising from the role described in the preceding sentence, the Whistleblower Office shall deny any award.
(4) Appeal of award determination 
Any determination regarding an award under paragraph (1), (2), or (3) may, within 30 days of such determination, be appealed to the Tax Court (and the Tax Court shall have jurisdiction with respect to such matter).
(5) Application of this subsection 
This subsection shall apply with respect to any action
(A) against any taxpayer, but in the case of any individual, only if such individuals gross income exceeds $200,000 for any taxable year subject to such action, and
(B) if the tax, penalties, interest, additions to tax, and additional amounts in dispute exceed $2,000,000.
(6) Additional rules 

(A) No contract necessary 
No contract with the Internal Revenue Service is necessary for any individual to receive an award under this subsection.
(B) Representation 
Any individual described in paragraph (1) or (2) may be represented by counsel.
(C) Submission of information 
No award may be made under this subsection based on information submitted to the Secretary unless such information is submitted under penalty of perjury.

26 USC 7624 - Reimbursement to State and local law enforcement agencies

(a) Authorization of reimbursement 
Whenever a State or local law enforcement agency provides information to the Internal Revenue Service that substantially contributes to the recovery of Federal taxes imposed with respect to illegal drug-related activities (or money laundering in connection with such activities), such agency may be reimbursed by the Internal Revenue Service for costs incurred in the investigation (including but not limited to reasonable expenses, per diem, salary, and overtime) not to exceed 10 percent of the sum recovered.
(b) Records; 10 percent limitation 
The Internal Revenue Service shall maintain records of the receipt of information from a contributing agency and shall notify the agency when monies have been recovered as the result of such information. Following such notification, the agency shall submit a statement detailing the investigative costs it incurred. Where more than 1 State or local agency has given information that substantially contributes to the recovery of Federal taxes, the Internal Revenue Service shall equitably allocate investigative costs among such agencies not to exceed an aggregate amount of 10 percent of the taxes recovered.
(c) No reimbursement where duplicative 
No State or local agency may receive reimbursement under this section if reimbursement has been received by such agency under a Federal or State forfeiture program or under State revenue laws.