Connecticut security deposit law

Read from the statute itself on 2026-11-09. Statewide rule; a city or county can add its own.

Maximum deposit: 2 months of rent
Return deadline: 21 days
Interest: Required in some cases

Up to two months' rent for tenants under 62 and one month for tenants 62+ (a tenant turning 62 can ask for the excess back). Interest is owed at the rate the Banking Commissioner sets yearly. Return within 21 days after the tenancy ends, or fifteen days after receiving the forwarding address.

Source: Conn. Gen. Stat. § 47a-21(b), (d)(2), (i) · read on 2026-11-09

Calculate it for your rent

State

Monthly rent ($)

Maximum legal deposit

$5,000

Up to 2 months of rent under Conn. Gen. Stat. § 47a-21(b), (d)(2), (i).

Return deadline

21 days

21 days after the tenancy ends, or 15 days after receiving the tenant's written forwarding address, whichever is later: the deposit with interest, and an itemized statement of any damage deducted.

Interest required

Yes

In some situations — see the note

Connecticut: Up to two months' rent for tenants under 62 and one month for tenants 62+ (a tenant turning 62 can ask for the excess back). Interest is owed at the rate the Banking Commissioner sets yearly. Return within 21 days after the tenancy ends, or fifteen days after receiving the forwarding address.

Source: Conn. Gen. Stat. § 47a-21(b), (d)(2), (i) · read on 2026-11-09

Connecticut: common questions

How much can a landlord charge for a security deposit in Connecticut?

Up to 2 months of rent under Conn. Gen. Stat. § 47a-21(b), (d)(2), (i). Up to two months' rent for tenants under 62 and one month for tenants 62+ (a tenant turning 62 can ask for the excess back). Interest is owed at the rate the Banking Commissioner sets yearly. Return within 21 days after the tenancy ends, or fifteen days after receiving the forwarding address.

How long does a landlord have to return a security deposit in Connecticut?

21 days. 21 days after the tenancy ends, or 15 days after receiving the tenant's written forwarding address, whichever is later: the deposit with interest, and an itemized statement of any damage deducted.

Not legal advice. Confirm with a local landlord-tenant attorney before relying on a figure.

For associations, blogs and resource pages

Add this calculator to your website

Free, no signup, no tracking form inside. Paste this code where you want it; it opens on Connecticut, and your readers can switch to any other.

<iframe src="https://www.proprietio.com/embed/security-deposit-calculator?state=ct" title="Security deposit calculator by state" width="100%" height="820" style="border:0;max-width:720px" loading="lazy"></iframe>
<p style="font-size:13px;margin:4px 0 0">Free <a href="https://www.proprietio.com/tools/security-deposit-calculator">security deposit calculator by state</a> by Proprietio.</p>