Washington Administrative Code
Title 458 - Revenue, Department of
Chapter 458-18 - Property tax Abatements, credits, deferrals and refunds
Section 458-18-220 - Refunds-Rate of interest
Current through Register Vol. 24-06, March 15, 2024
(1) Introduction. Interest applies to refunds of taxes made pursuant to RCW 84.69.010 through 84.69.090 in accordance with RCW 84.69.100. Interest also applies to judgments entered in favor of the plaintiff pursuant to RCW 84.68.030.
(2) Calculation of interest rate. The interest rate is calculated from the equivalent coupon issue yield of the average bill rate for 26-week treasury bills as determined at the first bill market auction conducted after June 30th of the calendar year preceding the date the taxes were paid.
(3) Interest rates. The following rates are applied to the amount of the judgment or the amount of the refund, until paid:
|
Year tax |
Auction |
|
|
paid |
Year |
Rate |
|
1984 |
1983 |
9.29% |
|
1985 |
1984 |
11.27% |
|
1986 |
1985 |
7.36% |
|
1987 |
1986 |
6.11% |
|
1988 |
1987 |
5.95% |
|
1989 |
1988 |
7.04% |
|
1990 |
1989 |
8.05% |
|
1991 |
1990 |
8.01% |
|
1992 |
1991 |
5.98% |
|
1993 |
1992 |
3.42% |
|
1994 |
1993 |
3.19% |
|
1995 |
1994 |
4.92% |
|
1996 |
1995 |
5.71% |
|
1997 |
1996 |
5.22% |
|
1998 |
1997 |
5.14% |
|
1999 |
1998 |
5.06% |
|
2000 |
1999 |
4.96% |
|
2001 |
2000 |
5.98% |
|
2002 |
2001 |
3.50% |
|
2003 |
2002 |
1.73% |
|
2004 |
2003 |
0.95% |
|
2005 |
2004 |
1.73% |
|
2006 |
2005 |
3.33% |
|
2007 |
2006 |
5.09% |
|
2008 |
2007 |
4.81% |
|
2009 |
2008 |
2.14% |
|
2010 |
2009 |
0.29% |
|
2011 |
2010 |
0.21% |
|
2012 |
2011 |
0.08% |
|
2013 |
2012 |
0.15% |
|
2014 |
2013 |
0.085% |
|
2015 |
2014 |
0.060% |
|
2016 |
2015 |
0.085% |
|
2017 |
2016 |
0.340% |
|
2018 |
2017 |
1.130% |
|
2019 |
2018 |
2.085% |
|
2020 |
2019 |
2.040% |
|
2021 |
2020 |
0.165% |
|
2022 |
2021 |
0.050% |
|
2023 |
2022 |
2.50% |
|
2024 |
2023 |
5.26% |
Statutory Authority: RCW 84.34.360, 84.34.065, 84.34.141, and 84.69.100. 13-02-053, § 458-18-220, filed 12/26/12, effective 1/1/13; 12-01-040, § 458-18-220, filed 12/13/11, effective 1/1/12. Statutory Authority: RCW 84.69.100. 11-02-017, § 458-18-220, filed 12/29/10, effective 1/1/11; 10-07-038, § 458-18-220, filed 3/10/10, effective 4/10/10; 08-24-094, § 458-18-220, filed 12/2/08, effective 1/2/09; 07-24-037, § 458-18-220, filed 11/30/07, effective 12/31/07; 06-21-059, § 458-18-220, filed 10/16/06, effective 11/16/06; 05-22-096, § 458-18-220, filed 11/1/05, effective 12/2/05; 04-24-101, § 458-18-220, filed 12/1/04, effective 1/1/05; 03-24-014, § 458-18-220, filed 11/20/03, effective 12/21/03; 02-23-081, § 458-18-220, filed 11/19/02, effective 12/20/02; 02-03-039, § 458-18-220, filed 1/8/02, effective 2/8/02; 00-24-106, § 458-18-220, filed 12/6/00, effective 12/31/00; 99-24-033, § 458-18-220, filed 11/23/99, effective 12/24/99. Statutory Authority: RCW 84.08.010, 84.08.070 and 84.69.100. 99-01-066, § 458-18-220, filed 12/14/98, effective 1/1/99; 98-01-177, § 458-18-220, filed 12/23/97, effective 1/1/98; 97-02-068, § 458-18-220, filed 12/31/96, effective 1/1/97; 96-01-093, § 458-18-220, filed 12/19/95, effective 1/1/96; 95-06-044, § 458-18-220, filed 2/24/95, effective 3/27/95; 94-05-063, § 458-18-220, filed 2/11/94, effective 3/14/94. Statutory Authority: RCW 84.08.010 and 84.69.100. 93-06-096, § 458-18-220, filed 3/3/93, effective 4/3/93; 92-17-027, § 458-18-220, filed 8/11/92, effective 9/11/92; 91-15-024, § 458-18-220, filed 7/11/91, effective 8/11/91. Statutory Authority: RCW 84.69.100 and 84.08.010(2). 89-10-067 (Order PT 89-6), § 458-18-220, filed 5/3/89; 88-07-003 (Order PT 88-3), § 458-18-220, filed 3/3/88. Statutory Authority: RCW 84.69.100 as amended by 1987 c 319 and 84.08.010(2). 87-19-141 (Order PT 87-7), § 458-18-220, filed 9/23/87.
