Indiana Prejudgment Interest Rate
United States Indiana prejudgment interest is discretionary — here is the rate courts apply.
Set by statute Discretionary
In Indiana, prejudgment interest is discretionary: a court may award it, and when it does the rate is 8% per year under Contract/liquidated: IC 24-4.6-1-103. CONTRACT/liquidated money claims (IC 24-4.6-1-103): prejudgment interest at 8% is available AS A MATTER OF RIGHT (not discretionary) only where damages are complete and ascertainable as of…
When Indiana prejudgment interest applies
CONTRACT/liquidated money claims (IC 24-4.6-1-103): prejudgment interest at 8% is available AS A MATTER OF RIGHT (not discretionary) only where damages are complete and ascertainable as of a fixed time by fixed rules of evidence/known standards of value (common-law Roper rule) — i.e., liquidated/readily-computable sums (written instruments not specifying a rate, accounts stated, closed accounts, money had and received). Unliquidated damages requiring judgment/discretion to fix the amount do NOT qualify.
When it starts accruing
Contract (IC 24-4.6-1-103): accrues from the date money became due / date of demand — e.g., date of settlement on money due on a written instrument without a stated rate, or the date an itemized bill was rendered and payment demanded on accounts stated/closed accounts/money had and received.
Simple or compound
Simple. Tort statute (IC 34-51-4-9) expressly requires the court to compute prejudgment interest "at the simple rate." Contract-claim prejudgment interest (IC 24-4.6-1-103, 8%) is likewise applied as simple interest.
→ Compare with the Indiana post-judgment interest rate (interest after judgment)
Prejudgment interest under Contract/liquidated: IC 24-4.6-1-103 — 8% (simple interest). This is PREjudgment interest (accruing before entry of judgment) and is separate from Indiana’s post-judgment rate; availability is limited by claim type (see the page). Verify against the statute text. Not legal advice.
Effective-date history
| Effective date | Rate | Basis |
|---|---|---|
| July 9, 2026 | 8% | Statute |
Source & provenance
Latest value retrieved July 10, 2026 (02:55 UTC) from the official source:
https://iga.in.gov/laws/2024/ic/titles/24#24-4.6-1-103