Connecticut judgment & prejudgment interest rates
Everything Connecticut charges in interest on a money judgment or an overdue debt, in one place — the rate after judgment and the rate before it, each verified against the statute and linked to its full page with sources, history, and carve-outs.
| Metric | Rate | Basis |
|---|---|---|
| Post-judgment interest | 10% | Set by statute |
| Prejudgment interest | 10% | Discretionary |
Post-judgment interest
Connecticut's post-judgment interest rate is 10% per year. Connecticut money judgments carry a fixed statutory rate of 10% per year under Conn. Gen. Stat. §37-3a, as simple interest. §37-3a covers both prejudgment and postjudgment interest as damages for detention of money; §37-3b postjudgment interest runs from the earlier of 20…
→ Full Connecticut post-judgment page — statute, effective-date history, and source.
Prejudgment interest
Connecticut's prejudgment interest rate is 10% per year (discretionary). In Connecticut, prejudgment interest is discretionary: a court may award it, and when it does the rate is 10% per year under Conn. Gen. Stat. § 37-3a(a). § 37-3a prejudgment interest is available ONLY as "damages for the detention of money after it becomes payable" — i.e., a LIQUIDATED or readily ascertainable sum that was wrongfully…
→ Full Connecticut prejudgment page — when it applies, accrual, compounding, and carve-outs.
Frequently asked
What is the post-judgment interest rate in Connecticut?
As of January 1, 2026, the Connecticut post-judgment interest rate is 10% per year. Connecticut’s statutory judgment interest rate.
What is the prejudgment interest rate in Connecticut?
Connecticut's prejudgment interest rate is 10% per year (discretionary). § 37-3a prejudgment interest is available ONLY as "damages for the detention of money after it becomes payable" — i.e., a LIQUIDATED or readily ascertainable sum that was wrongfully…
Is Connecticut judgment interest simple or compound, and when does it start?
See each rate's page for the exact compounding rule, accrual date, and statutory carve-outs — Connecticut prejudgment interest in particular turns on the type of claim.
Compare every state on the state interest-rate index and the prejudgment interest index, or run the numbers with our interest calculators. Reference data only — not legal advice.