Idaho post-judgment interest rate
United States Idaho’s official fiscal-year judgment rate and complete published history.
→ All Idaho judgment & prejudgment interest rates
Statutory formula / table
2026 Idaho post-judgment interest at a glance
- Current rate
- 8.875% per year
- Effective date
- July 1, 2026
- Controlling authority
- Idaho Code § 28-22-104(2)
- Rate basis
- Statutory formula / table
- Source checked
- August 20, 2026
- Recorded history
- 41 data points
Idaho’s current post-judgment rate is 8.875%. Idaho Code §28-22-104(2) sets the rate at five percentage points above the State Treasurer’s one-year Treasury base rate in effect when judgment is entered. The Treasurer publishes one selection for each July-to-June fiscal year, and the dataset preserves all 41 published selections beginning with fiscal year 1987.
How Idaho post-judgment interest works
Which rate applies
Section 28-22-104(2) supplies the statutory rate for judgments. Idaho appellate authority describes that judgment rate as mandatory and applicable to all judgments; subsection (1)’s written-contract language concerns interest due before judgment and should not be presented as a general post-judgment exception.
When interest accrues
The entry date selects the Treasurer’s July-to-June rate in force at that time. The current statute and decisions reviewed establish that selection rule, but a judgment’s precise accrual event and any special judgment treatment still must be checked against the controlling order and law.
Compounding and rate lock
The official sources reviewed do not establish one universal compounding, day-count, or partial-payment method for every Idaho judgment. StatuteRates therefore publishes the verified rate history but keeps a payoff calculator disabled rather than assume those mechanics.
Official history coverage
The official State Treasurer schedule contains 41 continuous fiscal-year selections from July 1, 1986 through the current published period. Historical values are copied from that table, not recomputed from market data.
→ Calculate interest at this rate
→ See Idaho’s prejudgment interest rate (interest before judgment — different rules)
Effective-date history
| Effective date | Rate | Basis |
|---|---|---|
| July 1, 2026 | 8.875% | Statute |
| July 1, 2025 | 9.125% | Statute |
| July 1, 2024 | 10.125% | Statute |
| July 1, 2023 | 10.250% | Statute |
| July 1, 2022 | 7.375% | Statute |
| July 1, 2021 | 5.125% | Statute |
| July 1, 2020 | 5.250% | Statute |
| July 1, 2019 | 7.125% | Statute |
| July 1, 2018 | 7.375% | Statute |
| July 1, 2017 | 6.250% | Statute |
| July 1, 2016 | 5.625% | Statute |
| July 1, 2015 | 5.375% | Statute |
| July 1, 2014 | 5.125% | Statute |
| July 1, 2013 | 5.250% | Statute |
| July 1, 2012 | 5.250% | Statute |
| July 1, 2011 | 5.250% | Statute |
| July 1, 2010 | 5.375% | Statute |
| July 1, 2009 | 5.625% | Statute |
| July 1, 2008 | 7.625% | Statute |
| July 1, 2007 | 10.000% | Statute |
| July 1, 2006 | 10.125% | Statute |
| July 1, 2005 | 8.375% | Statute |
| July 1, 2004 | 7.125% | Statute |
| July 1, 2003 | 6.000% | Statute |
| July 1, 2002 | 7.250% | Statute |
| July 1, 2001 | 8.750% | Statute |
| July 1, 2000 | 11.250% | Statute |
| July 1, 1999 | 10.125% | Statute |
| July 1, 1998 | 10.500% | Statute |
| July 1, 1997 | 10.750% | Statute |
| July 1, 1996 | 10.875% | Statute |
| July 1, 1995 | 10.875% | Statute |
| July 1, 1994 | 10.500% | Statute |
| July 1, 1993 | 8.500% | Statute |
| July 1, 1992 | 9.125% | Statute |
| July 1, 1991 | 11.375% | Statute |
| July 1, 1990 | 13.250% | Statute |
| July 1, 1989 | 13.375% | Statute |
| July 1, 1988 | 12.625% | Statute |
| July 1, 1987 | 11.875% | Statute |
Use this recorded history
41 source-backed periods are released from 1986-07-01 through 2026-08-22. For this series, the date input means judgment-entry date. General Idaho Code §28-22-104(2) judgment series; this lookup does not decide accrual, payments, compounding, or a special judgment path.
Source & provenance
Observation recorded August 20, 2026 (00:00 UTC) from the cited source (Idaho State Treasurer (official)):
https://sto.idaho.gov/Banking/Legal-Rate-of-Interest
Cite this page
StatuteRates. “Idaho Judgment Interest Rate.” StatuteRates.com. Accessed today. https://statuterates.com/rates/idaho-judgment-rate/ Rate recorded under Idaho Code § 28-22-104(2), effective July 1, 2026.