[Code of Federal Regulations]
[Title 26, Volume 2]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR1.148-9]

[Page 728-733]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
PART 1_INCOME TAXES--Table of Contents
 
Sec. 1.148-9  Arbitrage rules for refunding issues.

    (a) Scope of application. This section contains special arbitrage 
rules for refunding issues. These rules apply for all purposes of 
section 148 and govern allocations of proceeds, bonds, and investments 
to determine transferred proceeds, temporary periods, reasonably 
required reserve or replacement funds, minor portions, and separate 
issue treatment of certain multipurpose issues.
    (b) Transferred proceeds allocation rule--(1) In general. When 
proceeds of the refunding issue discharge any of the outstanding 
principal amount of the prior issue, proceeds of the prior issue become 
transferred proceeds of the refunding issue and cease to be proceeds of 
the prior issue. The amount of proceeds of the prior issue that becomes 
transferred proceeds of the refunding issue is an amount equal to the 
proceeds of the prior issue on the date of that discharge multiplied by 
a fraction--
    (i) The numerator of which is the principal amount of the prior 
issue discharged with proceeds of the refunding issue on the date of 
that discharge; and
    (ii) The denominator of which is the total outstanding principal 
amount of the prior issue on the date immediately before the date of 
that discharge.
    (2) Special definition of principal amount. For purposes of this 
section, principal amount means, in reference to a plain par bond, its 
stated principal amount, and in reference to any other bond, its present 
value.
    (3) Relation of transferred proceeds rule to universal cap rule--(i) 
In general. Paragraphs (b)(1) and (c) of this section apply to allocate 
transferred proceeds and corresponding investments to a refunding issue 
on any date required by those paragraphs before the application of the 
universal cap rule of Sec. 1.148-6(b)(2) to reallocate any of those 
amounts. To the extent nonpurpose investments allocable to proceeds of a 
refunding issue exceed the universal cap for the issue on the date that 
amounts become transferred proceeds of the refunding issue, those 
transferred proceeds and corresponding investments are reallocated back 
to the issue from which they transferred on that same date to the extent 
of the unused universal cap on that prior issue.
    (ii) Example. The following example illustrates the application of 
this paragraph of (b)(3):

    Example. On January 1, 1995, $100,000 of nonpurpose investments 
allocable to proceeds of issue A become transferred proceeds of issue B 
under Sec. 1.148-9, but the unused portion of issue B' s universal cap 
is $75,000 as of that date. On January 1, 1995, issue A has unused 
universal cap in excess of $25,000. Thus, $25,000 of nonpurpose 
investments representing the transferred proceeds are immediately 
reallocated back to issue A on January 1, 1995, and are proceeds of 
issue A. On the next transfer date under Sec. 1.148-9, the $25,000 
receives no priority in determining transferred proceeds as of that date 
but is treated the same as all other proceeds of issue A subject to 
transfer.

    (4) Limitation on multi-generational transfers. This paragraph 
(b)(4) contains limitations on the manner in which proceeds of a first 
generation issue that is refunded by a refunding issue (a second 
generation issue) become transferred proceeds of a refunding issue (a 
third generation issue) that refunds the second generation issue. 
Proceeds of the first generation issue that become transferred proceeds 
of the third generation issue are treated as having a

[[Page 729]]

yield equal to the yield on the refunding escrow allocated to the second 
generation issue (i.e., as determined under Sec. 1.148-5(b)(2)(iv)). 
The determination of the transferred proceeds of the third generation 
issue does not affect compliance with the requirements of section 148, 
including the determination of the amount of arbitrage rebate with 
respect to or the yield on the refunding escrow, of the second 
generation issue.
    (c) Special allocation rules for refunding issues--(1) Allocations 
of investments--(i) In general. Except as otherwise provided in this 
paragraph (c), investments purchased with sale proceeds or investment 
proceeds of a refunding issue must be allocated to those proceeds, and 
investments not purchased with those proceeds may not be allocated to 
those proceeds (i.e., a specific tracing method).
    (ii) Allocations to transferred proceeds. When proceeds of a prior 
issue become transferred proceeds of a refunding issue, investments (and 
the related payments and receipts) of proceeds of the prior issue that 
are held in a refunding escrow for another issue are allocated to the 
transferred proceeds under the ratable allocation method described in 
paragraph (c)(1)(iii) of this section. Investments of proceeds of the 
prior issue that are not held in a refunding escrow for another issue 
are allocated to the transferred proceeds by application of the 
allocation methods described in paragraph (c)(1) (iii) or (iv) of this 
section, consistently applied to all investments on a transfer date.
    (iii) Ratable allocation method. Under the ratable allocation 
method, a ratable portion of each nonpurpose and purpose investment of 
proceeds of the prior issue is allocated to transferred proceeds of the 
refunding issue.
    (iv) Representative allocation method--(A) In general. Under the 
representative allocation method, representative portions of the 
portfolio of nonpurpose investments and the portfolio of purpose 
investments of proceeds of the prior issue are allocated to transferred 
proceeds of the refunding issue. Unlike the ratable allocation method, 
this representative allocation method permits an allocation of 
particular whole investments. Whether a portion is representative is 
based on all the facts and circumstances, including, without limitation, 
whether the current yields, maturities, and current unrealized gains or 
losses on the particular allocated investments are reasonably comparable 
to those of the unallocated investments in the aggregate. In addition, 
if a portion of nonpurpose investments is otherwise representative, it 
is within the issuer's discretion to allocate the portion from whichever 
source of funds it deems appropriate, such as a reserve fund or a 
construction fund for a prior issue.
    (B) Mark-to-market safe harbor for representative allocation method. 
In addition to other representative allocations, a specific allocation 
of a particular nonpurpose investment to transferred proceeds (e.g., of 
lower yielding investments) is treated as satisfying the representative 
allocation method if that investment is valued at fair market value on 
the transfer date in determining the payments and receipts on that date, 
but only if the portion of the nonpurpose investments that transfers is 
based on the relative fair market value of all nonpurpose investments.
    (2) Allocations of mixed escrows to expenditures for principal, 
interest, and redemption prices on a prior issue--(i) In general. Except 
for amounts required or permitted to be accounted for under paragraph 
(c)(2)(ii) of this section, proceeds of a refunding issue and other 
amounts that are not proceeds of a refunding issue that are deposited in 
a refunding escrow (a mixed escrow) must be accounted for under this 
paragraph (c)(2)(i). Those proceeds and other amounts must be allocated 
to expenditures for principal, interest, or stated redemption prices on 
the prior issue so that the expenditures of those proceeds do not occur 
faster than ratably with expenditures of the other amounts in the mixed 
escrow. During the period that the prior issue has unspent proceeds, 
however, these allocations must be ratable (with reasonable adjustments 
for rounding) both between sources for expenditures (i.e., proceeds and 
other amounts) and between uses (i.e., principal, interest, and stated 
redemption prices on the prior issue).

[[Page 730]]

    (ii) Exceptions--(A) Mandatory allocation of certain non-proceeds to 
earliest expenditures. If amounts other than proceeds of the refunding 
issue are deposited in a mixed escrow, but before the issue date of the 
refunding issue those amounts had been held in a bona fide debt service 
fund or a fund to carry out the governmental purpose of the prior issue 
(e.g., a construction fund), those amounts must be allocated to the 
earliest maturing investments in the mixed escrow.
    (B) Permissive allocation of non-proceeds to earliest expenditures. 
Excluding amounts covered by paragraph (c)(2)(ii)(A) of this section and 
subject to any required earlier expenditure of those amounts, any 
amounts in a mixed escrow that are not proceeds of a refunding issue may 
be allocated to the earliest maturing investments in the mixed escrow, 
provided that those investments mature and the proceeds thereof are 
expended before the date of any expenditure from the mixed escrow to pay 
any principal of the prior issue.
    (d) Temporary periods in refundings--(1) In general. Proceeds of a 
refunding issue may be invested in higher yielding investments under 
section 148(c) only during the temporary periods described in paragraph 
(d)(2) of this section.
    (2) Types of temporary periods in refundings. The available 
temporary periods for proceeds of a refunding issue are as follows:
    (i) General temporary period for refunding issues. Except as 
otherwise provided in this paragraph (d)(2), the temporary period for 
proceeds (other than transferred proceeds) of a refunding issue is the 
period ending 30 days after the issue date of the refunding issue.
    (ii) Temporary periods for current refunding issues--(A) In general. 
Except as otherwise provided in paragraph (d)(2)(ii)(B) of this section, 
the temporary period for proceeds (other than transferred proceeds) of a 
current refunding issue is 90 days.
    (B) Temporary period for short-term current refunding issues. The 
temporary period for proceeds (other than transferred proceeds) of a 
current refunding issue that has an original term to maturity of 270 
days or less may not exceed 30 days. The aggregate temporary periods for 
proceeds (other than transferred proceeds) of all current refunding 
issues described in the preceding sentence that are part of the same 
series of refundings is 90 days. An issue is part of a series of 
refundings if it finances or refinances the same expenditures for a 
particular governmental purpose as another issue.
    (iii) Temporary periods for transferred proceeds--(A) In general. 
Except as otherwise provided in paragraph (d)(2)(iii)(B) of this 
section, each available temporary period for transferred proceeds of a 
refunding issue begins on the date those amounts become transferred 
proceeds of the refunding issue and ends on the date that, without 
regard to the discharge of the prior issue, the available temporary 
period for those proceeds would have ended had those proceeds remained 
proceeds of the prior issue.
    (B) Termination of initial temporary period for prior issue in an 
advance refunding. The initial temporary period under Sec. 1.148-2(e) 
(2) and (3) for the proceeds of a prior issue that is refunded by an 
advance refunding issue (including transferred proceeds) terminates on 
the issue date of the advance refunding issue.
    (iv) Certain short-term gross proceeds. Except for proceeds of a 
refunding issue held in a refunding escrow, proceeds otherwise 
reasonably expected to be used to pay principal or interest on the prior 
issue, replacement proceeds not held in a bona fide debt service fund, 
and transferred proceeds, the temporary period for gross proceeds of a 
refunding issue is the 13-month period beginning on the date of receipt.
    (e) Reasonably required reserve or replacement funds in refundings. 
In addition to the requirements of Sec. 1.148-2(f), beginning on the 
issue date of a refunding issue, a reserve or replacement fund for a 
refunding issue or a prior issue is a reasonably required reserve or 
replacement fund under section 148(d) that may be invested in higher 
yielding investments only if the aggregate amount invested in higher 
yielding investments under this paragraph (e) for both the refunding 
issue and the prior issue does not exceed the size limitations under 
Sec. 1.148-2 (f)(2) and (f)(3), measured by reference to the refunding

[[Page 731]]

issue only (regardless of whether proceeds of the prior issue have 
become transferred proceeds of the refunding issue).
    (f) Minor portions in refundings. Beginning on the issue date of the 
refunding issue, gross proceeds not in excess of a minor portion of the 
refunding issue qualify for investment in higher yielding investments 
under section 148(e), and gross proceeds not in excess of a minor 
portion of the prior issue qualify for investment in higher yielding 
investments under either section 148(e) or section 149(d)(3)(A)(v), 
whichever is applicable. Minor portion is defined in Sec. 1.148-2(g).
    (g) Certain waivers permitted. On or before the issue date, an 
issuer may waive the right to invest in higher yielding investments 
during any temporary period or as part of a reasonably required reserve 
or replacement fund. At any time, an issuer may waive the right to 
invest in higher yielding investments as part of a minor portion.
    (h) Multipurpose issue allocations--(1) Application of multipurpose 
issue allocation rules. The portion of the bonds of a multipurpose issue 
reasonably allocated to any separate purpose under this paragraph (h) is 
treated as a separate issue for all purposes of section 148 except the 
following--
    (i) Arbitrage yield. Except to the extent that the proceeds of an 
issue are allocable to two or more conduit loans that are tax-exempt 
bonds, determining the yield on a multipurpose issue and the yield on 
investments for purposes of the arbitrage yield restrictions of section 
148 and the arbitrage rebate requirement of section 148(f);
    (ii) Rebate amount. Except as provided in paragraph (h)(1)(i) of 
this section, determining the rebate amount for a multipurpose issue, 
including subsidiary matters with respect to that determination, such as 
the computation date credit under Sec. 1.148-3(d)(1), the due date for 
payments, and the $100,000 bona fide debt service fund exception under 
section 148(f)(4)(A)(ii);
    (iii) Minor portion. Determining the minor portion of an issue under 
section 148(e);
    (iv) Reasonably required reserve or replacement fund. Determining 
the portion of an issue eligible for investment in higher yielding 
investments as part of a reasonably required reserve or replacement fund 
under section 148(d); and
    (v) Effective date. Applying the provisions of Sec. 1.148-11(b) 
(relating to elective retroactive application of Sec. Sec. 1.148-1 
through 1.148-10 to certain issues).
    (2) Rules on allocations of multipurpose issues--(i) In general. 
This paragraph (h) applies to allocations of multipurpose issues, 
including allocations involving the refunding purposes of the issue. 
Except as otherwise provided in this paragraph (h), proceeds, 
investments, and bonds of a multipurpose issue may be allocated among 
the various separate purposes of the issue using any reasonable, 
consistently applied allocation method. An allocation is not reasonable 
if it achieves more favorable results under section 148 or 149(d) than 
could be achieved with actual separate issues. An allocation under this 
paragraph (h) may be made at any time, but once made may not be changed.
    (ii) Allocations involving certain common costs. A ratable 
allocation of common costs (as described in paragraph (h)(3)(ii) of this 
section) among the separate purposes of the multipurpose issue is 
generally reasonable. If another allocation method more accurately 
reflects the extent to which any separate purpose of a multipurpose 
issue enjoys the economic benefit or bears the economic burden of 
certain common costs, that allocation method may be used.
    (3) Separate purposes of a multipurpose issue--(i) In general. 
Separate purposes of a multipurpose issue include refunding a separate 
prior issue, financing a separate purpose investment, financing a 
construction issue (as defined in Sec. 1.148-7(f)), and any clearly 
discrete governmental purpose reasonably expected to be financed by that 
issue. In general, all integrated or functionally related capital 
projects that qualify for the same initial temporary period under Sec. 
1.148-2(e)(2) are treated as having a single governmental purpose. The 
separate purposes of a refunding issue include the separate purposes of 
the prior issue, if any. Separate purposes may be treated as a single 
purpose if the proceeds used to finance those purposes are eligible for 
the same initial

[[Page 732]]

temporary period under section 148(c). For example, the use of proceeds 
of a multipurpose issue to finance separate qualified mortgage loans may 
be treated as a single purpose.
    (ii) Financing common costs. Common costs of a multipurpose issue 
are not separate purposes. Common costs include issuance costs, accrued 
interest, capitalized interest on the issue, a reserve or replacement 
fund, qualified guarantee fees, and similar costs properly allocable to 
the separate purposes of the issue.
    (iii) Example. The following example illustrates the application of 
this paragraph (h)(3).

    Example. On January 1, 1994, Housing Authority of State A issues a 
$10 million issue (the 1994 issue) at an interest rate of 10 percent to 
finance qualified mortgage loans for owner-occupied residences under 
section 143. During 1994, A originates $5 million in qualified mortgage 
loans at an interest rate of 10 percent. In 1995, the market interest 
rates for housing loans falls to 8 percent and A is unable to originate 
further loans from the 1994 issue. On January 1, 1996, A issues a $5 
million issue (the 1996 issue) at an interest rate of 8 percent to 
refund partially the 1994 issue. Under paragraph (h) of this section, A 
treats the portion of the 1994 issue used to originate $5 million in 
loans as a separate issue comprised of that group of purpose 
investments. A allocates those purpose investments representing those 
loans to that separate unrefunded portion of the issue. In addition, A 
treats the unoriginated portion of the 1994 issue as a separate issue 
and allocates the nonpurpose investments representing the unoriginated 
proceeds of the 1994 issue to the refunded portion of the issue. Thus, 
when proceeds of the 1996 issue are used to pay principal on the 
refunded portion of the 1994 issue that is treated as a separate issue 
under paragraph (h) of this section, only the portion of the 1994 issue 
representing unoriginated loan funds invested in nonpurpose investments 
transfer to become transferred proceeds of the 1996 issue.

    (4) Allocations of bonds of a multipurpose issue--(i) Reasonable 
allocation of bonds to portions of issue. After reasonable adjustment of 
the issue price of a multipurpose issue to account for common costs, the 
portion of the bonds of a multipurpose issue allocated to a separate 
purpose must have an issue price that bears the same ratio to the 
aggregate issue price of the multipurpose issue as the portion of the 
sale proceeds of the multipurpose issue used for that separate purpose 
bears to the aggregate sale proceeds of the multipurpose issue. For a 
refunding issue used to refund two or more prior issues, the portion of 
the sales proceeds allocated to the refunding of a separate prior issue 
is based on the present value of the refunded debt service on that prior 
issue, using the yield on investments in the refunding escrow allocable 
to the entire refunding issue as the discount rate.
    (ii) Safe harbor for pro rata allocation method for bonds. The use 
of the relative amount of sales proceeds used for each separate purpose 
to ratably allocate each bond or a ratable number of substantially 
identical whole bonds is a reasonable method for allocating bonds of a 
multipurpose issue.
    (iii) Safe harbor for allocations of bonds used to finance separate 
purpose investments. An allocation of a portion of the bonds of a 
multipurpose issue to a particular purpose investment is generally 
reasonable if that purpose investment has principal and interest 
payments that reasonably coincide in time and amount to principal and 
interest payments on the bonds allocated to that purpose investment.
    (iv) Rounding of bond allocations to next whole bond denomination 
permitted. An allocation that rounds each resulting fractional bond up 
or down to the next integral multiple of a permitted denomination of 
bonds of that issue not in excess of $100,000 does not prevent the 
allocation from satisfying this paragraph (h)(4).
    (v) Restrictions on allocations of bonds to refunding purposes. For 
each portion of a multipurpose issue that is used to refund a separate 
prior issue, a method of allocating bonds of that issue is reasonable 
under this paragraph (h) only if, in addition to the requirements of 
paragraphs (h)(1) and (h)(2) of this section, the portion of the bonds 
allocated to the refunding of that prior issue--
    (A) Results from a pro rata allocation under paragraph (h)(4)(ii) of 
this section;
    (B) Reflects aggregate principal and interest payable in each bond 
year that is less than, equal to, or proportionate to, the aggregate 
principal and interest payable on the prior issue in each bond year;

[[Page 733]]

    (C) Results from an allocation of all the bonds of the entire 
multipurpose issue in proportion to the remaining weighted average 
economic life of the capital projects financed or refinanced by the 
issue, determined in the same manner as under section 147(b); or
    (D) Results from another reasonable allocation method, but only to 
the extent that the application of the allocation methods provided in 
this paragraph (h)(4)(v) is not permitted under state law restrictions 
applicable to the bonds, reasonable terms of bonds issued before, or 
subject to a master indenture that became effective prior to, July 1, 
1993, or other similar restrictions or circumstances. This paragraph 
(h)(4)(v)(D) shall be strictly construed and is available only if it 
does not result in a greater burden on the market for tax-exempt bonds 
than would occur using one of the other allocation methods provided in 
this paragraph (h)(4)(v). (See also Sec. 1.148-11(c)(2).)
    (vi) Exception for refundings of interim notes. Paragraph (h)(4)(v) 
of this section need not be applied to refunding bonds issued to provide 
permanent financing for one or more projects if the prior issue had a 
term of less than 3 years and was sold in anticipation of permanent 
financing, but only if the aggregate term of all prior issues sold in 
anticipation of permanent financing was less than 3 years.
    (5) Limitation on multi-generation allocations. This paragraph (h) 
does not apply to allocations of a multipurpose refunded issue unless 
that refunded issue is refunded directly by an issue to which this 
paragraph (h) applies. For example, if a 1994 issue refunds a 1984 
multipurpose issue, which in turn refunded a 1980 multipurpose issue, 
this paragraph (h) applies to allocations of the 1984 issue for purposes 
of allocating the refunding purposes of the 1994 issue, but does not 
permit allocations of the 1980 issue.
    (i) Operating rules for separation of prior issue into refunded and 
unrefunded portions--(1) In general. For purposes of paragraph (h)(3)(i) 
of this section, the separate purposes of a prior issue include the 
refunded and unrefunded portions of the prior issue. Thus, the refunded 
and unrefunded portions are treated as separate issues under paragraph 
(h)(1) of this section. Those separate issues must satisfy the 
requirements of paragraphs (h) and (i) of this section. The refunded 
portion of the bonds of a prior issue is based on a fraction the 
numerator of which is the principal amount of the prior issue to be paid 
with proceeds of the refunding issue and the denominator of which is the 
outstanding principal amount of the bonds of the prior issue, each 
determined as of the issue date of the refunding issue. (See also 
paragraph (b)(2) of this section.)
    (2) Allocations of proceeds and investments in a partial refunding. 
As of the issue date of a partial refunding issue under this paragraph 
(i), unspent proceeds of the prior issue are allocated ratably between 
the refunded and unrefunded portions of the prior issue and the 
investments allocable to those unspent proceeds are allocated in the 
manner required for the allocation of investments to transferred 
proceeds under paragraph (c)(1)(ii) of this section.
    (3) References to prior issue. If the refunded and unrefunded 
portions of a prior issue are treated as separate issues under this 
paragraph (i), then, except to the extent that the context clearly 
requires otherwise (e.g., references to the aggregate prior issue in the 
mixed escrow rule in paragraph (c)(2) of this section), all references 
in this section to a prior issue refer only to the refunded portion of 
that prior issue.

[T.D. 8476, 58 FR 33541, June 18, 1993; 58 FR 44453, Aug. 23, 1993, as 
amended by T.D. 8538, 59 FR 24045, May 10, 1994; T.D. 8718, 62 FR 25512, 
May 9, 1997]