MINERAL ROYALTIES

Personal holding company income, § 502 (h).

MINERAL UNIT

Definition, § 735 (a) (2).

MINERALS

Definition, § 735 (a) (7).

Excess profits tax on profits from, § 731.

MINES

Depletion in case of discovery value, § 114 (b) (2).

MINING AND TIMBER OPERATIONS

Excess profits taxes

Base period defined, § 735 (a) (5).

Estimated recoverable units defined, § 735 (a)
(10).

Excess output defined, § 735 (a) (4).
Exempt excess output defined, § 735 (a) (11).
Mineral property defined, § 735 (a) (6).
Mineral unit defined, § 735 (a) (2).
Minerals defined, § 735 (a) (7).
Nontaxable bonus income, § 735 (c).

Rule if income from excess output includes
bonus payment, § 735 (d).

Nontaxable income from excess output, § 735 (b).
Coal and iron mines, § 735 (b) (2).
General rule, § 735 (b) (1).

Rule if income from excess output includes

bonus payment, § 735 (d).

Timber properties, § 735 (b) (3).
Normal output defined, § 735 (a) (5).
Normal unit profit defined, § 735 (a) (9).
Producer defined, § 735 (a) (1).
Timber block defined, § 735 (a) (8).
Timber unit defined, § 735 (a) (3).
Unit net income defined, § 735 (a) (12).

MINISTERS

Rental value of dwelling house, § 22 (b) (6).

MINUS ADJUSTMENT

Definition, § 761 (b) (2).

MISCELLANEOUS ITEMS

Exclusion from gross income, § 22 (b) (8).
MISSIONARIES

Estate taxes, § 850.

MITIGATION OF EFFECT OF LIMITATION, ETC.,

IN INCOME TAX CASES

Adjustment to be made, § 3801.

MONEY OR MONEY'S WORTH

Transfers in gross estate, § 812 (b) (5).

MONTH

Definition, § 930 (c).

MUNICIPALITIES

Contributions to

Estate taxes, §§ 812 (d), 861 (a) (3).
Gift taxes, §§ 1004 (a) (2), 1004 (b).
Income taxes,
23 (0).
Income of, § 116 (d).

MUTUAL DITCH COMPANIES

Exempt from income tax, § 101 (10).

MUTUAL INSURANCE COMPANIES

Excess profits taxes, § 710 (a) (4).
Exempt from income tax, § 101 (11).

MUTUAL INSURANCE COMPANIES OTHER THAN
LIFE OR MARINE

Amortization of premium and accrual of discount,
§ 207 (d).

Credits against net income, § 207 (g).
Deductions from gross income, § 207 (b) (4).
Capital losses, § 207 (b) (4) (F).
Depreciation, § 207 (b) (4) (D).
Double, § 207 (f).

Foreign corporations, § 207 (e).
Interest, 207 (b) (4) (E).

Investment expenses, § 207 (b) (4) (B).
Real estate expenses, § 207 (b) (4) (C).
Tax-free interest, § 207 (b) (4) (A).
Dividends to policyholders defined, § 207 (b) (3).
Gross investment income defined, § 207 (b) (1).
Imposition of tax, § 207 (a).

Foreign mutual insurance companies, § 207 (a)
(5).

Gross amount between $75,000 and $125,000, § 207
(a) (4).

No United States insurance business, § 207 (a)
(6).

Net income defined, § 207 (b) (4).

Net operating losses, § 208.

Net premiums defined, § 207 (b) (2).
Rental value of real estate, § 207 (c).

MUTUAL INVESTMENT COMPANIES

See "Regulated Investment Companies."
Definition, § 361.

MUTUAL MARINE INSURANCE COMPANIES

See "Insurance Companies Other than Life or
Mutual."

NON-DEDUCTIBLE ITEMS

Amounts paid to holders of life or terminable in-
terest, § 24 (d).

Betterments, § 24 (a) (2).

Carrying charges, § 24 (a) (7).
Family expenses, § 24 (a) (1).

Indebtedness to purchase endowment contract, § 24
(a) (6).

Indebtedness to purchase single-premium life insur-
ance, § 24 (a) (6).

Inter-corporation losses, § 24 (b) (1).
Inter-family losses, § 24 (b) (1).

Inter-fiduciary-beneficiary losses, § 24 (b) (1).
Inter-fiduciary-fiduciary losses, § 24 (b) (1).
Inter-grantor-fiduciary losses, § 24 (b) (1).
Inter-individual-corporation losses, § 24 (b) (1).
Life insurance premiums, § 24 (a) (4).
Living expenses, § 24 (a) (1).

New buildings, § 24 (a) (2).

Permanent improvements, § 24 (a) (2).
Personal expenses, § 24 (a) (1).
Unpaid expenses, § 24 (c).

Unpaid interest, § 24 (c).

NON-EXEMPT PROPERTY

Definition, § 373 (e).

NON-INTEREST-BEARING OBLIGATIONS

Issued at discount, § 42 (b).

NON-PROFITABLE ORGANIZATIONS
Exempt from income tax, § 101.
NONRESIDENT ALIENS

Allowance of deductions and credits, § 215.
Return to contain information, § 215 (a).
Tax withheld at source, § 215 (b).
Credits against net income, § 214.
Credits against tax, § 216.

Deductions from gross gifts, § 1004 (b).
Gift tax, § 1000 (a).

Deductions from gross income, § 213.

Charitable, etc., contributions, § 213 (c).
General rule, § 213 (a).

Losses, 213 (b).

Estate taxes, § 860.

Gross income, § 212.

NONRESIDENTS

See "Nonresident Aliens.''

NON-TAXABLE EXCHANGES

See "Gain or Loss."'

NON-TRADE EXPENSES

Deductibility from gross income, § 23 (a) (2).

NORMAL OUTPUT

Definition, § 735 (a) (5).

NORMAL TAX

Corporations, § 13.

Special classes, § 14 (a).

Individuals, § 11.

NORMAL UNIT PROFIT

Definition, § 735 (a) (9).

NOTICE

Demand for payment of tax, § 3655.

NOTICE OF DEFICIENCY

Estate taxes, § 871 (a) (1).

Address for, § 871 (a) (1).
Jeopardy assessment, § 872 (b).
Gift tax, §§ 1012 (a), 1013 (b).
Address for, § 1012 (j).
Jeopardy assessment, § 1013.
Income taxes, § 272 (a) (1), (f).
Address for, § 272 (k).

Jeopardy assessment, § 273 (b).

NOTICE OF FIDUCIARY RELATIONSHIP

Estate taxes, § 901.

Address for notice of liability, § 901 (d).
Executor to give, § 820.

Fiduciary or decedent, § 901 (a).

Fiduciary or transferee, § 901 (b).
Manner of notice, § 901 (c).

Gift taxes, § 1026.

Fiduciary or donor, § 1026 (a).
Fiduciary or transferee, § 1026 (b).
Manner of notice, § 1026 (c).

OBLIGATIONS OF THE CORPORATION

Dividends paid in, § 27 (e).

OBLIGATIONS OF THE UNITED STATES

Credit against victory tax, defined, § 453 (a) (3).

Credit for personal service corporations, § 394 (c).
Definition, § 453 (a) (3).

Information at source, § 147 (b).
Interest on, § 22 (b) (4).

OBLIGEE

Withholding of tax at source, § 143 (a) (3).
OBLIGOR

Withholding of tax at source, § 143 (a) (3).
OBSOLESCENCE

Deductibility from gross income, § 23 (1).

Definition, § 3797 (a) (2).

PARTNERSHIP RULE

Definition, § 24 (b) (2).

PARTNERSHIPS

Amortization deduction, § 190.

Computation of partnership income, § 183.
Charitable contributions, § 183 (c).

General rule, § 183 (a).

Segregation of items, § 183 (b).

Capital gains and losses, § 183 (b) (1).

Ordinary net income or loss, § 183 (b) (2).

Credit against net income, § 184.

Credits for foreign taxes, §§ 131 (a) (4), 186.
Credits for taxes of possessions of United States,

§§ 131 (a) (4), 186.

Definition, § 3797 (a) (2).

PAYMENT OF INCOME TAXES Cont.

Extension of time, § 56 (c).

General rule, § 56 (c) (1).

Liquidation of personal holding companies, § 56
(c) (2).

Foreign corporations, § 236.
Time of payment, § 236 (a).
Withheld at source, § 144.

Fractional parts of cent, § 56 (g).
Information at source, § 147 (a).
Installments, § 56 (b).
Nonresident aliens, § 218.
Receipts, § 56 (h).

Time, § 56 (a).

Unjust enrichment tax, § 702 (c).

Victory tax by withholding agent, § 468.

Voluntary advance payment, § 56 (d).

Withheld at source, § 143 (c).

Foreign corporation, § 144.

PAYROLL PERIOD

Definition, §§ 465 (a), 1621 (b).

PENALTIES

Closing agreements, § 3762.

Concealment of property, § 3762 (a).

Withholding, falsifying or destroying records,
§ 3762 (b).

Compromises, § 3762.

Delinquency in payment of capital stock tax, § 1206.
Estate taxes, § 894.

Ad valorem, § 894 (a).

Failure to file return, § 3612 (d) (1).

False or fraudulent return,. § 3612 (d) (2).
Specific, 894 (b).

Civil, 894 (b) (1).

Criminal, § 894 (b) (2).

Gift taxes

Failure to file return, §§ 1018, 3612 (d) (1).

Fraudulent return, § 1019 (b).

Negligence, § 1019 (a).

Income tax

Attempt to defeat, § 145 (b).

Attempt to evade, § 145 (b).

Disclosing information on return, § 55 (f).
Failure to.

Collect income taxes on wages, § 1626.

File information return, § 145 (a).

File information return of foreign personal

holding company, § 340.

File return, § 291 (a).

Make declaration, § 294 (a) (3).

Pay, § 145 (a), (b).

Pay estimated tax, § 294 (a) (4).

Withhold tax, § 145 (b).

Fraudulent return, § 293 (b).

Improper accumulation of surplus, § 102.

Negligence, § 293 (a).

Underestimation of estimated tax, § 294 (a) (5).

Information and returns, § 3616.

Suits by United States for, § 3745.

Victory tax, § 470.

Additional penalty, § 470 (b).

Failure of withholding agent to file return, § 470

(c).

Failure to furnish receipt, § 470 (a).
Fraudulent receipt, § 470 (a).

Election as to deficiency dividends, § 506 (j) (1).
Effect of election, § 506 (j) (2).
Administrative provisions, § 508.

Corporations making consolidated returns, § 501
(c).

Deficiency dividends, § 506.

Definition, § 506 (c) (1).

Deficiency dividends credit or refund, § 506.
Deficiency paid, § 506 (a).

Unpaid deficiency, § 506 (b).
Claim required, § 506 (d).
Denied in case of.

Fraud, § 506 (f).

No return filed, § 506 (f).

Definition, § 501.

Exceptions, § 501 (b).
General rule, § 501 (a).

Exemption from excess profits tax, § 727.

Extension of time for payment of income tax by,
§ 56 (c) (2).

Foreign Personal Holding Companies. See "Foreign
Personal Holding Companies."

Liquidation of, § 56 (c) (2).

Personal holding company income defined, § 502.
Annuities, § 502 (a).
Dividends, § 502 (a).

Gains from transactions in
Commodities, § 502 (c).

Stock and securities, § 502 (b).

Income from estates and trusts, § 502 (d).

Income to shareholder, use of corporate property,

§ 502 (f).

Interest, § 502 (a).

Mineral, oil or gas royalties, § 502 (h).

Personal service contracts, § 502 (e).

PERSONAL HOLDING COMPANY INCOME

Definition, § 502.

PERSONAL PROPERTY

Authority to distrain, § 3690.

Casual sales of, installment basis, § 44 (b).
Certificates of sale, § 3697.