Such a request does not have the effect of extending the regular period of limitation even though the request is made less than 18 months before the expiration of the regular period of limitation.

(2) If a corporation makes no income tax return under the Act, but each of the shareholders includes in his personal return his distributive share of the net income of the corporation, the tax of the corporation shall be assessed within four years after the last date on which any such shareholder's return was filed.

(3) In the case of a false or fraudulent return with intent to evade tax, the tax may be assessed at any time after such false or fraudulent return is filed.

(4) If there is omitted from the gross income stated in the return an amount properly includible therein which is in excess of 25 per cent of the gross income so stated, the tax may be assessed at any time within five years after the return was filed.

(5) In the event the taxpayer fails to file a return, the amount of tax due may be assessed at any time after the date prescribed for filing the return. (But see paragraph (2) of this article.)

(6) If before the expiration of the time prescribed in section 275 for the assessment of the tax the Commissioner and the taxpayer have consented in writing to the assessment of the tax after such time, the tax may be assessed at any time prior to the expiration of the period agreed upon. The period agreed upon may be extended by subsequent agreements in writing made before the expiration of the period previously agreed upon.

(7) If a notice of a deficiency has been mailed to the taxpayer under the provisions of section 272 (a), then the running of the statute of limitations on assessment of any deficiency shall be suspended for the period during which the Commissioner is prohibited from making the assessment (and in any event, if a proceeding in respect of the deficiency is placed on the docket of the Board, until the decision of the Board becomes final), and for 60 days thereafter. If the Commissioner mails to a taxpayer a notice of deficiency within the statutory period of limitation and the taxpayer does not appeal therefrom to the Board, the notice of deficiency so given does not suspend the running of the period of limitation on assessment for the purpose of any additional deficiency shown to be due in a subsequent deficiency notice.

(8) In bankruptcy or receivership proceedings or proceedings in a Federal court for the relief of debtors the running of the statute of limitations on the making of assessments is suspended from (1) the date of adjudication in bankruptcy, (2) the date of the filing of a debtor's petition or answer in proceedings for the relief of debtors under sections 74, 75, and 77 of the National Bankruptcy Act, as amended (relating to individuals and to railroad corporations en

gaged in interstate commerce), (3) the date when the debtor's petition or answer was approved in proceedings for the relief of corporate debtors under section 77B of the National Bankruptcy Act, as amended (relating to corporations other than railroad corporations engaged in interstate commerce), or (4) the date of the appointment of a receiver in receivership proceedings, to a date 30 days after the date upon which the notice provided for in section 274 (a) is received by the Commissioner in Washington, D. C., but in no case shall the suspension be for a period in excess of two years. See section 274 (a) and articles 274-1 and 274-2.

With respect to the period of limitation for assessing the amount of the liability of a transferee of property, or for assessing the amount of the liability of a fiduciary under section 3467 of the Revised Statutes (paragraph 41 of the Appendix to these regulations), see section 311.

ART. 275-2. Period of limitation upon collection of tax.—In the case of the income taxes imposed by the Act, a proceeding in court without assessment for the collection of such tax must be begun within three years after the return was filed.

The exceptions to the period of limitation upon collection of the tax without assessment stated in the preceding paragraph are as follows:

(1) In the case of income received during the lifetime of a decedent or by his estate during the period of administration, or by a corporation, a proceeding in court for the collection of the tax without assessment must be begun within 18 months after a written request therefor by the executor, administrator, or other fiduciary representing the estate of the decedent or by the corporation, but not after the expiration of 3 years after the return was filed. Such a request does not have the effect of extending the regular period of limitation within which a proceeding in court without assessment may be begun, even though the request is made less than one year before the expiration of the regular period of limitation, nor is it of any effect if made before the return is filed. In the case of a corporation the conditions stated in (a), (b), and (c) of paragraph (1) of article 275-1 also must be met.

(2) A proceeding in court for the collection of the tax without assessment may be begun at any time

(a) In case the taxpayer files a false or fraudulent return with intent to evade tax; and

(b) In case the taxpayer failed to file a return.

(3) If there is omitted from the gross income stated in the return an amount properly includible therein which is in excess of 25 per cent of the gross income so stated, a proceeding in court for the col

lection of the tax may be begun without assessment at any time within five years after the return was filed.

In any case in which the tax has been assessed within the statutory period of limitation properly applicable thereto, a proceeding in court or distraint for the collection of such tax may be begun within six years after the assessment thereof, or prior to the expiration of any period for collection agreed upon in writing by the Commissioner and the taxpayer before the expiration of such 6-year period. The period so agreed upon may be extended by subsequent agreements in writing made before the expiration of the period previously agreed upon. In determining the running of the statute of limitations in respect of distraint, the distraint shall be held to have been begun, in the case of personal property, on the date on which the levy upon such property is made, or, in the case of real property, on the date on which notice of the time and place of sale is given to the person whose estate it is proposed to sell.

If a notice of a deficiency has been mailed to the taxpayer under the provisions of section 272 (a) (see article 272-1), then the running of the statute of limitations on the beginning of distraint after assessment, or on the beginning of a proceeding in court after assessment or without assessment, in respect of any deficiency, shall be suspended for the period during which the Commissioner is prohibited from beginning such distraint or proceeding in court (and in any event, if a proceeding in respect of the deficiency is placed on the docket of the Board, until the decision of the Board becomes final), and for 60 days thereafter.

With respect to the period of limitation upon the collection of the tax on unpaid claims in bankruptcy or receivership proceedings, see section 274 (b) and article 274–2.

CHAPTER XXXI

INTEREST AND ADDITIONS TO TAX

Supplement M-Interest and Additions to the Tax

SEC. 291. FAILURE TO FILE RETURN.

In case of any failure to make and file a return required by this title, within the time prescribed by law or prescribed by the Commissioner in pursuance of law, 25 per centum of the tax shall be added to the tax, except that when a return is filed after such time and it is shown that the failure to file it was due to reasonable cause and not due to willful neglect no such addition shall be made to the tax. The amount so added to any tax shall be collected at the same time and in the same manner and as a part of the tax unless the tax has been paid before the discovery of the neglect, in which case the amount so added shall be collected in the same manner as the tax. The amount added to the tax under this section shall be in lieu of the 25 per centum addition to the tax provided in section 3176 of the Revised Statutes, as amended.

ART. 291-1. Addition to the tax in case of failure to file return.—In case of failure to make and file a return required by Title I within the prescribed time, 25 per cent of the amount of the tax is added to the tax unless the return is later filed and failure to file the return within the prescribed time is shown to the satisfaction of the Commissioner to be due to reasonable cause and not to willful neglect. Two classes of delinquents are subject to this addition to the tax: (a) Those who do not file returns and for whom returns are made by a collector or the Commissioner, and

(b) Those who file tardy returns and are unable to show reasonable cause for the delay.

A taxpayer who files a tardy return and wishes to avoid the addition to the tax must make an affirmative showing of all facts alleged as a reasonable cause for failure to file the return on time in the form of an affidavit which should be attached to the return. If such an affidavit is furnished with the return or upon the collector's demand, the collector, unless otherwise directed by the Commissioner, will forward the affidavit with the return, and, if the Commissioner determines that the delinquency was due to a reasonable cause and not to willful neglect, the 25 per cent addition to the tax will not be assessed. If the taxpayer exercised ordinary business care and prudence and was nevertheless unable to file the return in the prescribed time, then the delay is due to reasonable cause,

If the 25 per cent addition to the tax for delinquency in filing the return has been added, the amount so added shall be collected in the same manner as the tax.

For addition to the tax in case of a deficiency due to fraud with intent to evade tax, see section 293. As to the making of returns for taxpayers by collectors or the Commissioner in the case of delinquency in filing a return, or in the case of a false or fraudulent return, see section 3176 of the Revised Statutes, as amended (paragraph 54 of the Appendix to these regulations).

SEC. 292. INTEREST ON DEFICIENCIES.

Interest upon the amount determined as a deficiency shall be assessed at the same time as the deficiency, shall be paid upon notice and demand from the collector, and shall be collected as a part of the tax, at the rate of 6 per centum per annum from the date prescribed for the payment of the tax (or, if the tax is paid in installments, from the date prescribed for the payment of the first installment) to the date the deficiency is assessed, or, in the case of a waiver under section 272(d), to the thirtieth day after the filing of such waiver or to the date the deficiency is assessed whichever is the earlier.

SEC. 293. ADDITIONS TO THE TAX IN CASE OF DEFICIENCY. (a) Negligence.-If any part of any deficiency is due to negligence, or intentional disregard of rules and regulations but without intent to defraud, 5 per centum of the total amount of the deficiency (in addition to such deficiency) shall be assessed, collected, and paid in the same manner as if it were a deficiency, except that the provisions of section 272 (i), relating to the prorating of a deficiency, and of section 292, relating to interest on deficiencies, shall not be applicable.

(b) Fraud. If any part of any deficiency is due to fraud with intent to evade tax, then 50 per centum of the total amount of the deficiency (in addition to such deficiency) shall be so assessed, collected, and paid, in lieu of the 50 per centum addition to the tax provided in section 3176 of the Revised Statutes, as amended.

SEC. 294. ADDITIONS TO THE TAX IN CASE OF NONPAYMENT. (a) Tax shown on return.

(1) GENERAL RULE.-Where the amount determined by the taxpayer as the tax imposed by this title, or any installment thereof, or any part of such amount or installment, is not paid on or before the date prescribed for its payment, there shall be collected as a part of the tax, interest upon such unpaid amount at the rate of 1 per centum a month from the date prescribed for its payment until it is paid.

(2) IF EXTENSION GRANTED.—Where an extension of time for payment of the amount so determined as the tax by the taxpayer, or any installment thereof, has been granted, and the amount the time for payment of which has been extended, and the interest thereon determined under section 295, is not paid in full prior to the expiration of the period of the extension, then, in lieu of the interest provided for in paragraph (1) of this subsection, interest at the rate of 1 per centum a month shall be collected on such