IRS News Release  
August 16, 1999

IRS Announces Quarterly Interest Rates

WASHINGTON - The Internal Revenue Service today announced that interest rates for the calendar quarter beginning October 1, 1999, will remain at eight (8) percent for overpayments (seven (7) percent in the case of a corporation), eight (8) percent for underpayments, and ten (10) percent for large corporate underpayments. The overpayment rate for the portion of a corporate overpayment exceeding $10,000 will remain at five and one-half (5.5) percent.

Under the Internal Revenue Code, the rate of interest is determined on a quarterly basis. For taxpayers other than corporations, the overpayment and underpayment rate is the federal short-term rate plus 3 percentage points. Generally, in the case of a corporation, the underpayment rate is the federal short-term rate plus 3 percentage points and the overpayment rate is the federal short-term rate plus 2 percentage points. The rate for large corporate underpayments is the federal short-term rate plus 5 percentage points. The rate on the portion of a corporate overpayment of tax exceeding $10,000 for a taxable period is the federal short-term rate plus one-half (0.5) of a percentage point.

The interest rates announced today are computed from the federal short-term rate based on daily compounding determined during July 1999. Rev. Rul. 99-36, announcing the new rates of interest, is attached and will appear in Internal Revenue Bulletin No. 1999-35, dated August 30, 1999.

Part I
Section 6621.-- Determination of Interest Rate
26 CFR 301.6621-1: Interest rate.

Rev. Rul. 99-36
Section 6621 of the Internal Revenue Code establishes the rates for interest on tax overpayments and tax underpayments. Under 6621(a)(1), the overpayment rate beginning October 1, 1999, is the sum of the federal short-term rate plus 3 percentage points (2 percentage points in the case of a corporation), except the rate for the portion of a corporate overpayment of tax exceeding $10,000 for a taxable period is the sum of the federal short-term rate plus 0.5 of a percentage point for interest computations made after December 31, 1994. Under 6621(a)(2), the underpayment rate is the sum of the federal short-term rate plus 3 percentage points.

Section 6621(c) provides that for purposes of interest payable under 6601 on any large corporate underpayment, the underpayment rate under 6621(a)(2) is determined by substituting "5 percentage points" for "3 percentage points." See 6621(c) and 301.6621-3 of the Regulations on Procedure and Administration for the definition of a large corporateunder payment and for the rules for determining the applicable date. Section 6621(c) and 301.6621-3 are generally effective for periods after December 31, 1990.

Section 6621(b)(1) provides that the Secretary will determine the federal short-term rate for the first month in each calendar quarter.

Section 6621(b)(2)(A) provides that the federal short-term rate determined under 6621(b)(1) for any month applies during the first calendar quarter beginning after such month. Section 6621(b)(3) provides that the federal short-term rate for any month is the federal short-term rate determined during such month by the Secretary in accordance with 1274(d), rounded to the nearest full percent (or, if a multiple of 1/2 of 1 percent, the rate is increased to the next highest full percent).

Notice 88-59, 1988-1 C.B. 546, announced that, in determining the quarterly interest rates to be used for overpayments and underpayments of tax under 6621, the Internal Revenue Service will use the federal short-term rate based on daily compounding because that rate is most consistent with 6621 which, pursuant to 6622, is subject to daily compounding. Rounded to the nearest full percent, the federal short-term rate based on daily compounding determined during the month of July 1999 is 5 percent. Accordingly, an overpayment rate of 8 percent (7 percent in the case of a corporation) and an underpayment rate of 8 percent are established for the calendar quarter beginning October 1, 1999. The overpayment rate for the portion of a corporate overpayment exceeding $10,000 for the calendar quarter beginning October 1, 1999, is 5.5 percent. The underpayment rate for large corporate underpayments for the calendar quarter beginning October 1, 1999, is 10 percent. These rates apply to amounts bearing interest during that calendar quarter.

Interest factors for daily compound interest for annual rates of 5.5 percent, 7 percent, 8 percent, and 10 percent are published in Tables 16, 19, 21, and 25 of Rev. Proc. 95-17, 1995-1 C.B. 556, 570, 573, 575, and 579.

Annual interest rates to be compounded daily pursuant to 6622 that apply for prior periods are set forth in the tables accompanying this revenue ruling.

DRAFTING INFORMATION
The principal author of this revenue ruling is Raymond Bailey of the Office of Assistant Chief Counsel (Income Tax and Accounting). For further information regarding this revenue ruling, contact Mr. Bailey on (202) 622-6226 (not a toll-free call).

TABLE OF INTEREST RATES
PERIODS BEFORE JUL. 1, 1975 - PERIODS ENDING DEC. 31, 1986
OVERPAYMENTS AND UNDERPAYMENTS
In 1995-1 C.B.
PERIOD RATE DAILY RATE TABLE

Before Jul. 1, 1975 6% Table 2, pg. 557

Jul. 1, 1975--Jan. 31, 1976 9%  Table 4,  pg. 559
Feb. 1, 1976--Jan. 31, 1978 7%  Table 3,  pg. 558
Feb. 1, 1978--Jan. 31, 1980 6%  Table 2,  pg. 557
Feb. 1, 1980--Jan. 31, 1982 12% Table 5,  pg. 560
Feb. 1, 1982--Dec. 31, 1982 20% Table 6,  pg. 560
Jan. 1, 1983--Jun. 30, 1983 16% Table 37, pg. 591
Jul. 1, 1983--Dec. 31, 1983 11% Table 27, pg. 581
Jan. 1, 1984--Jun. 30, 1984 11% Table 75, pg. 629
Jul. 1, 1984--Dec. 31, 1984 11% Table 75, pg. 629
Jan. 1, 1985--Jun. 30, 1985 13% Table 31, pg. 585
Jul. 1, 1985--Dec. 31, 1985 11% Table 27, pg. 581
Jan. 1, 1986--Jun. 30, 1986 10% Table 25, pg. 579
Jul. 1, 1986--Dec. 31, 1986 9%  Table 23, pg. 577


TABLE OF INTEREST RATES
FROM JAN. 1, 1987 - Dec. 31, 1998
OVERPAYMENTS UNDERPAYMENTS
1995-1 C.B. 1995-1 C.B.
RATE TABLE PG RATE TABLE PG

Jan. 1, 1987--Mar. 31, 1987 8%  21 575 9%  23 577
Apr. 1, 1987--Jun. 30, 1987 8%  21 575 9%  23 577
Jul. 1, 1987--Sep. 30, 1987 8%  21 575 9%  23 577
Oct. 1, 1987--Dec. 31, 1987 9%  23 577 10% 25 579
Jan. 1, 1988--Mar. 31, 1988 10% 73 627 11% 75 629
Apr. 1, 1988--Jun. 30, 1988 9%  71 625 10% 73 627
Jul. 1, 1988--Sep. 30, 1988 9%  71 625 10% 73 627
Oct. 1, 1988--Dec. 31, 1988 10% 73 627 11% 75 629
Jan. 1, 1989--Mar. 31, 1989 10% 25 579 11% 27 581
Apr. 1, 1989--Jun. 30, 1989 11% 27 581 12% 29 583
Jul. 1, 1989--Sep. 30, 1989 11% 27 581 12% 29 583
Oct. 1, 1989--Dec. 31, 1989 10% 25 579 11% 27 581
Jan. 1, 1990--Mar. 31, 1990 10% 25 579 11% 27 581
Apr. 1, 1990--Jun. 30, 1990 10% 25 579 11% 27 581
Jul. 1, 1990--Sep. 30, 1990 10% 25 579 11% 27 581
Oct. 1, 1990--Dec. 31, 1990 10% 25 579 11% 27 581
Jan. 1, 1991--Mar. 31, 1991 10% 25 579 11% 27 581
Apr. 1, 1991--Jun. 30, 1991 9%  23 577 10% 25 579
Jul. 1, 1991--Sep. 30, 1991 9%  23 577 10% 25 579
Oct. 1, 1991--Dec. 31, 1991 9%  23 577 10% 25 579
Jan. 1, 1992--Mar. 31, 1992 8%  69 623 9%  71 625
Apr. 1, 1992--Jun. 30, 1992 7%  67 621 8%  69 623
Jul. 1, 1992--Sep. 30, 1992 7%  67 621 8%  69 623
Oct. 1, 1992--Dec. 31, 1992 6%  65 619 7%  67 621
Jan. 1, 1993--Mar. 31, 1993 6%  17 571 7%  19 573
Apr. 1, 1993--Jun. 30, 1993 6%  17 571 7%  19 573
Jul. 1, 1993--Sep. 30, 1993 6%  17 571 7%  19 573
Oct. 1, 1993--Dec. 31, 1993 6%  17 571 7%  19 573
Jan. 1, 1994--Mar. 31, 1994 6%  17 571 7%  19 573
Apr. 1, 1994--Jun. 30, 1994 6%  17 571 7%  19 573
Jul. 1, 1994--Sep. 30, 1994 7%  19 573 8%  21 575
Oct. 1, 1994--Dec. 31, 1994 8%  21 575 9%  23 577
Jan. 1, 1995--Mar. 31, 1995 8%  21 575 9%  23 577
Apr. 1, 1995--Jun. 30, 1995 9%  23 577 10% 25 579
Jul. 1, 1995--Sep. 30, 1995 8%  21 575 9%  23 577
Oct. 1, 1995--Dec. 31, 1995 8%  21 575 9%  23 577
Jan. 1, 1996--Mar. 31, 1996 8%  69 623 9%  71 625
Apr. 1, 1996--Jun. 30, 1996 7%  67 621 8%  69 623
Jul. 1, 1996--Sep. 30, 1996 8%  69 623 9%  71 625
Oct. 1, 1996--Dec. 31, 1996 8%  69 623 9%  71 625
Jan. 1, 1997--Mar. 31, 1997 8%  21 575 9%  23 577
Apr. 1, 1997--Jun. 30, 1997 8%  21 575 9%  23 577
Jul. 1, 1997--Sep. 30, 1997 8%  21 575 9%  23 577
Oct. 1, 1997--Dec. 31, 1997 8%  21 575 9%  23 577
Jan. 1, 1998--Mar. 31, 1998 8%  21 575 9%  23 577
Apr. 1, 1998--Jun. 30, 1998 7%  19 573 8%  21 575
Jul. 1, 1998--Sep. 30, 1998 7%  19 573 8%  21 575
Oct. 1, 1998--Dec. 31, 1998 7%  19 573 8%  21 575


TABLE OF INTEREST RATES
FROM JANUARY 1, 1999 - PRESENT
NONCORPORATE OVERPAYMENTS AND UNDERPAYMENTS
1995-1 C.B.
RATE TABLE PAGE

Jan. 1, 1999--Mar. 31, 1999 7% 19 573
Apr. 1, 1999--Jun. 30, 1999 8% 21 575
Jul. 1, 1999--Sep. 30, 1999 8% 21 575
Oct. 1, 1999--Dec. 31, 1999 8% 21 575


TABLE OF INTEREST RATES
FROM JANUARY 1, 1999 - PRESENT
CORPORATE OVERPAYMENTS AND UNDERPAYMENTS
OVERPAYMENTS UNDERPAYMENTS
1995-1 C.B. 1995-1 C.B.
RATE TABLE PG RATE TABLE PG

Jan. 1, 1999--Mar. 31, 1999 6% 17 571 7% 19 573
Apr. 1, 1999--Jun. 30, 1999 7% 19 573 8% 21 575
Jul. 1, 1999--Sep. 30, 1999 7% 19 573 8% 21 575
Oct. 1, 1999--Dec. 31, 1999 7% 19 573 8% 21 575


TABLE OF INTEREST RATES FOR
LARGE CORPORATE UNDERPAYMENTS
FROM JANUARY 1, 1991 - PRESENT
1995-1 C.B.
RATE TABLE PG

Jan. 1, 1991--Mar. 31, 1991 13% 31 585
Apr. 1, 1991--Jun. 30, 1991 12% 29 583
Jul. 1, 1991--Sep. 30, 1991 12% 29 583
Oct. 1, 1991--Dec. 31, 1991 12% 29 583
Jan. 1, 1992--Mar. 31, 1992 11% 75 629
Apr. 1, 1992--Jun. 30, 1992 10% 73 627
Jul. 1, 1992--Sep. 30, 1992 10% 73 627
Oct. 1, 1992--Dec. 31, 1992 9%  71 625
Jan. 1, 1993--Mar. 31, 1993 9%  23 577
Apr. 1, 1993--Jun. 30, 1993 9%  23 577
Jul. 1, 1993--Sep. 30, 1993 9%  23 577
Oct. 1, 1993--Dec. 31, 1993 9%  23 577
Jan. 1, 1994--Mar. 31, 1994 9%  23 577
Apr. 1, 1994--Jun. 30, 1994 9%  23 577
Jul. 1, 1994--Sep. 30, 1994 10% 25 579
Oct. 1, 1994--Dec. 31, 1994 11% 27 581
Jan. 1, 1995--Mar. 31, 1995 11% 27 581
Apr. 1, 1995--Jun. 30, 1995 12% 29 583
Jul. 1, 1995--Sep. 30, 1995 11% 27 581
Oct. 1, 1995--Dec. 31, 1995 11% 27 581
Jan. 1, 1996--Mar. 31, 1996 11% 75 629
Apr. 1, 1996--Jun. 30, 1996 10% 73 627
Jul. 1, 1996--Sep. 30, 1996 11% 75 629
Oct. 1, 1996--Dec. 31, 1996 11% 75 629
Jan. 1, 1997--Mar. 31, 1997 11% 27 581
Apr. 1, 1997--Jun. 30, 1997 11% 27 581
Jul. 1, 1997--Sep. 30, 1997 11% 27 581
Oct. 1, 1997--Dec. 31, 1997 11% 27 581
Jan. 1, 1998--Mar. 31, 1998 11% 27 581
Apr. 1, 1998--Jun. 30, 1998 10% 25 579
Jul. 1, 1998--Sep. 30, 1998 10% 25 579
Oct. 1, 1998--Dec. 31, 1998 10% 25 579
Jan. 1, 1999--Mar. 31, 1999 9%  23 577
Apr. 1, 1999--Jun. 30, 1999 10% 25 579
Jul. 1, 1999--Sep. 30, 1999 10% 25 579
Oct. 1, 1999--Dec. 31, 1999 10% 25 579


TABLE OF INTEREST RATES FOR CORPORATE
OVERPAYMENTS EXCEEDING $10,000
FROM JANUARY 1, 1995 - PRESENT
1995-1 C.B.
RATE TABLE PG

Jan. 1, 1995--Mar. 31, 1995 6.5% 18 572
Apr. 1, 1995--Jun. 30, 1995 7.5% 20 574
Jul. 1, 1995--Sep. 30, 1995 6.5% 18 572
Oct. 1, 1995--Dec. 31, 1995 6.5% 18 572
Jan. 1, 1996--Mar. 31, 1996 6.5% 66 620
Apr. 1, 1996--Jun. 30, 1996 5.5% 64 618
Jul. 1, 1996--Sep. 30, 1996 6.5% 66 620
Oct. 1, 1996--Dec. 31, 1996 6.5% 66 620
Jan. 1, 1997--Mar. 31, 1997 6.5% 18 572
Apr. 1, 1997--Jun. 30, 1997 6.5% 18 572
Jul. 1, 1997--Sep. 30, 1997 6.5% 18 572
Oct. 1, 1997--Dec. 31, 1997 6.5% 18 572
Jan. 1, 1998--Mar. 31, 1998 6.5% 18 572
Apr. 1, 1998--Jun. 30, 1998 5.5% 16 570
Jul. 1. 1998--Sep. 30, 1998 5.5% 16 570
Oct. 1, 1998--Dec. 31, 1998 5.5% 16 570
Jan. 1, 1999--Mar. 31, 1999 4.5% 14 568
Apr. 1, 1999--Jun. 30, 1999 5.5% 16 570
Jul. 1, 1999--Sep. 30, 1999 5.5% 16 570
Oct. 1, 1999--Dec. 31, 1999 5.5% 16 570

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