11 U.S.C. § 727 : US Code - Section 727: Discharge

      (a) The court shall grant the debtor a discharge, unless - 
        (1) the debtor is not an individual;
        (2) the debtor, with intent to hinder, delay, or defraud a
      creditor or an officer of the estate charged with custody of
      property under this title, has transferred, removed, destroyed,
      mutilated, or concealed, or has permitted to be transferred,
      removed, destroyed, mutilated, or concealed - 
          (A) property of the debtor, within one year before the date
        of the filing of the petition; or
          (B) property of the estate, after the date of the filing of
        the petition;

        (3) the debtor has concealed, destroyed, mutilated, falsified,
      or failed to keep or preserve any recorded information, including
      books, documents, records, and papers, from which the debtor's
      financial condition or business transactions might be
      ascertained, unless such act or failure to act was justified
      under all of the circumstances of the case;
        (4) the debtor knowingly and fraudulently, in or in connection
      with the case - 
          (A) made a false oath or account;
          (B) presented or used a false claim;
          (C) gave, offered, received, or attempted to obtain money,
        property, or advantage, or a promise of money, property, or
        advantage, for acting or forbearing to act; or
          (D) withheld from an officer of the estate entitled to
        possession under this title, any recorded information,
        including books, documents, records, and papers, relating to
        the debtor's property or financial affairs;

        (5) the debtor has failed to explain satisfactorily, before
      determination of denial of discharge under this paragraph, any
      loss of assets or deficiency of assets to meet the debtor's
      liabilities;
        (6) the debtor has refused, in the case - 
          (A) to obey any lawful order of the court, other than an
        order to respond to a material question or to testify;
          (B) on the ground of privilege against self-incrimination, to
        respond to a material question approved by the court or to
        testify, after the debtor has been granted immunity with
        respect to the matter concerning which such privilege was
        invoked; or
          (C) on a ground other than the properly invoked privilege
        against self-incrimination, to respond to a material question
        approved by the court or to testify;

        (7) the debtor has committed any act specified in paragraph
      (2), (3), (4), (5), or (6) of this subsection, on or within one
      year before the date of the filing of the petition, or during the
      case, in connection with another case, under this title or under
      the Bankruptcy Act, concerning an insider;
        (8) the debtor has been granted a discharge under this section,
      under section 1141 of this title, or under section 14, 371, or
      476 of the Bankruptcy Act, in a case commenced within 8 years
      before the date of the filing of the petition;
        (9) the debtor has been granted a discharge under section 1228
      or 1328 of this title, or under section 660 or 661 of the
      Bankruptcy Act, in a case commenced within six years before the
      date of the filing of the petition, unless payments under the
      plan in such case totaled at least - 
          (A) 100 percent of the allowed unsecured claims in such case;
        or
          (B)(i) 70 percent of such claims; and
          (ii) the plan was proposed by the debtor in good faith, and
        was the debtor's best effort;

        (10) the court approves a written waiver of discharge executed
      by the debtor after the order for relief under this chapter;
        (11) after filing the petition, the debtor failed to complete
      an instructional course concerning personal financial management
      described in section 111, except that this paragraph shall not
      apply with respect to a debtor who is a person described in
      section 109(h)(4) or who resides in a district for which the
      United States trustee (or the bankruptcy administrator, if any)
      determines that the approved instructional courses are not
      adequate to service the additional individuals who would
      otherwise be required to complete such instructional courses
      under this section (The United States trustee (or the bankruptcy
      administrator, if any) who makes a determination described in
      this paragraph shall review such determination not later than 1
      year after the date of such determination, and not less
      frequently than annually thereafter.); or
        (12) the court after notice and a hearing held not more than 10
      days before the date of the entry of the order granting the
      discharge finds that there is reasonable cause to believe that - 
          (A) section 522(q)(1) may be applicable to the debtor; and
          (B) there is pending any proceeding in which the debtor may
        be found guilty of a felony of the kind described in section
        522(q)(1)(A) or liable for a debt of the kind described in
        section 522(q)(1)(B).

      (b) Except as provided in section 523 of this title, a discharge
    under subsection (a) of this section discharges the debtor from all
    debts that arose before the date of the order for relief under this
    chapter, and any liability on a claim that is determined under
    section 502 of this title as if such claim had arisen before the
    commencement of the case, whether or not a proof of claim based on
    any such debt or liability is filed under section 501 of this
    title, and whether or not a claim based on any such debt or
    liability is allowed under section 502 of this title.
      (c)(1) The trustee, a creditor, or the United States trustee may
    object to the granting of a discharge under subsection (a) of this
    section.
      (2) On request of a party in interest, the court may order the
    trustee to examine the acts and conduct of the debtor to determine
    whether a ground exists for denial of discharge.
      (d) On request of the trustee, a creditor, or the United States
    trustee, and after notice and a hearing, the court shall revoke a
    discharge granted under subsection (a) of this section if - 
        (1) such discharge was obtained through the fraud of the
      debtor, and the requesting party did not know of such fraud until
      after the granting of such discharge;
        (2) the debtor acquired property that is property of the
      estate, or became entitled to acquire property that would be
      property of the estate, and knowingly and fraudulently failed to
      report the acquisition of or entitlement to such property, or to
      deliver or surrender such property to the trustee;
        (3) the debtor committed an act specified in subsection (a)(6)
      of this section; or
        (4) the debtor has failed to explain satisfactorily - 
          (A) a material misstatement in an audit referred to in
        section 586(f) of title 28; or
          (B) a failure to make available for inspection all necessary
        accounts, papers, documents, financial records, files, and all
        other papers, things, or property belonging to the debtor that
        are requested for an audit referred to in section 586(f) of
        title 28.

      (e) The trustee, a creditor, or the United States trustee may
    request a revocation of a discharge - 
        (1) under subsection (d)(1) of this section within one year
      after such discharge is granted; or
        (2) under subsection (d)(2) or (d)(3) of this section before
      the later of - 
          (A) one year after the granting of such discharge; and
          (B) the date the case is closed.