## US-CT interest rules

This source-backed guide covers US-CT interest authority (Conn. Gen. Stat. § 37-1, § 37-3a, § 37-3b). It certifies only the quoted source-backed rules below; related interest categories remain outside this page unless they are expressly listed in the receipt.

## Conn. Gen. Stat. § 37-1, § 37-3a, § 37-3b

US-CT interest controlling authority under Conn. Gen. Stat. § 37-1, § 37-3a, § 37-3b.

> **37-1.** cent and so remained until 1872 when parties were permitted to contract for any rate; in 1873 the maximum was fixed at 7 per cent and in 1874 this was made the legal rate in absence of agreement for a lesser rate; in 1877 the rate was fixed at 6 per cent, in the absence of agreement to the contrary. 107 C. 278. Cited. 110 C. 259; 117 C. 253; 125 C. 315. Table of Contents Note: Readers should refer to the 2026 Supplement, revised to January 1, 2026, for updated versions of statutes amended, repealed or added during

## Use the calculator

DocketMath's interest calculator can model interest scenarios once you identify the controlling jurisdiction, amount, rate type, and accrual date. Use the source panel for the verified source-backed rule.

[Open the Interest calculator](/tools/interest)

## Sources

- [37-1 — Conn. Gen. Stat. § 37-1, § 37-3a, § 37-3b](https://www.cga.ct.gov/current/pub/chap_673.htm)

All sources are official primary law published by `www.cga.ct.gov`.

**Corroboration method:** government_primary_source_direct_fetch.


Local rule variations that can change interest results in Connecticut.

How interest rules vary in Connecticut

ANO-831 CT interest-calculator surgery 2026-04-24. Fabrications fixed: (1) § 37-3c 'good faith cure' sub-rule under late_payment — § 37-3c does not address cure periods; removed. (2) penalty.§ 37-1 rate claimed 10% — actual 8%; entry recast as unverified. (3) penalty.§ 37-3a sub-rule @ 5% — fabrication (§ 37-3a is 10%); removed. (4) penalty.§ 37-4 text fabricated — § 37-4 concerns demand-for-payment on loans, not penalty interest; removed. (5) erisa.§ 37-3a sub-rule cited a Queensland, Australia URL with fabricated CT 8% judgment text — removed; replaced with 28 U.S.C. § 1961 which is the actual rate courts apply. (6) escrow.§ 49-2 miscited — § 49-2 governs mortgage release, not escrow interest; entry recast as unverified. (7) escrow.§ 37-4 text fabricated; removed. (8) security_deposit: prior interest_rate 0.1 plus raw text '3% per annum' contradicted each other; § 47a-21(i) imposes a 1.5% statutory floor — corrected. Discretionary 'may' in § 37-3a vs mandatory 'shall' in § 37-3b distinguished in judgment.rate_notes. § 52-192a offer-of-compromise (8%) clarified. _ano_711_research block (wrong phase, verified_date was effective-date 1983-10-01) replaced with _ano_710_research.

A civil action may be brought... by a participant or beneficiary... for the recovery of benefits due to him under the terms of his plan, to enforce his rights under the terms of the plan, or to clarify his rights to future benefits under the terms of the plan.

Interest shall be allowed on any money judgment in a civil case recovered in a district court... at a rate equal to the weekly average 1-year constant maturity Treasury yield... Interest shall be computed daily... and shall be compounded annually.

Except as provided in sections 37-3b, 37-3c and 52-192a, interest at the rate of ten per cent a year, and no more, may be recovered and allowed in civil actions or arbitration proceedings under chapter 909, including actions to recover money loaned at a greater rate, as damages for the detention of money after it becomes payable.

For a cause of action arising on or after May 27, 1997, interest at the rate of ten per cent a year, and no more, shall be recovered and allowed in any action to recover damages for injury to the person, or to real or personal property, caused by negligence, computed from the date that is twenty days after the date of judgment...

After trial the court shall examine the record to determine whether the plaintiff made an offer of compromise which the defendant failed to accept. If the court ascertains from the record that the plaintiff made such an offer of compromise and that the defendant failed to accept such offer, the court shall add to the amount so recovered eight per cent annual interest on said amount...

Except as provided in sections 37-3b, 37-3c and 52-192a, interest at the rate of ten per cent a year, and no more, may be recovered and allowed in civil actions or arbitration proceedings... as damages for the detention of money after it becomes payable.

(a) The compensation for forbearance of property loaned at a fixed valuation, or for money, shall, in the absence of any agreement to the contrary, be at the rate of eight per cent a year...

Each landlord... shall pay interest on each security deposit received... at a rate equal to the average rate paid, as of December thirtieth of the prior year, on savings deposits by insured commercial banks as last published in the Federal Reserve Board Bulletin, rounded to the nearest one-tenth of one percentage point, except in no event shall such rate of interest be less than one and one-half per cent per year.

The Banking Commissioner... shall determine annually the deposit index... and shall publish such rate...

§ 37-3a(a): ... interest at the rate of ten per cent a year, and no more, may be recovered and allowed in civil actions or arbitration proceedings under chapter 909, including actions to recover money loaned at a greater rate, as damages for the detention of money after it becomes payable.

interest in US-CT is governed by Conn. Gen. Stat. § 37-1, § 37-3a, § 37-3b.