Amount of Connecticut Security Deposit: The security deposit can't be more than two month's rent. In addition, your landlord can make you pay the first month's rent before you move in. If you are 62 or older, your landlord can't demand or hold more than one month's rent as a security deposit.

Interest on Security Deposits Connecticut:  The minimum rate is set each year by the Banking Commissioner.  (For 2002 through 2010 it was 1.5%) The interest must be paid each year on the anniversary date of your lease. Your landlord is not required to pay the interest for any month in which you paid your rent more than 10 days late, (unless the landlord has imposed a late charge for late payment in that month). If you haven't received any interest payments, and you have lived in the same apartment for a long time, your landlord may owe you a substantial amount for overdue interest.

General Preventative Steps to Take to Ensure a Deposit Return

A tenant must meet all of the above conditions to ensure a refund of the deposit, but meeting those conditions is not all the tenant should do. The chances of receiving return of the deposit will be increased if the following suggestions are also followed:

Move-in Inventory Inspection. When you move in your home or apartment, make a list and take photos of the apartment and any damage. Typically, you should do a walk through with the owner or manager prior to moving in. Get them to sign an acknowledgement of the damage and note what (if anything) will be done. This will help you when you move out.

Move-Out Notice. A lease may require that the tenant give the landlord 30 days written notice prior to move-out in order to get the security deposit back. Even if the lease does not require it, notify the landlord  prior to moving.

Move-out Inventory Inspection. When the tenant prepares to move, the apartment or home should be cleaned and the landlord asked to appear for a move out inspection. The tenant should fill out another inventory form, similar to the move-in inventory. Ideally, you should have a copy of the original move in form - for both your use and the landlord.

Turn in the Keys. The keys should be turned in on the exact day the tenant vacates the premises. If the keys are turned in later, the landlord may be able to charge the tenant additional rent or other charges under the lease. A tenant's actual move out date is often considered to be when the keys are turned in.

Deductions from the Security Deposit: A landlord cannot legally deduct for normal wear and tear. This refers to deterioration which occurs during regular, daily, intended use of the rental unit, for example nail holes in the walls from pictures or paintings. See our guide.

If the landlord makes any deductions from the deposit, a written, itemized accounting of how much is being charged for each item must be sent to the tenant. 

If you gave your landlord a forwarding address in writing, your landlord must do one of the following within 30 days after you move out:

• Return your full security deposit plus any interest; or

• Send you an itemized written statement of expenses deducted from your security deposit, along with the balance of your deposit and interest.

(If you wait more than 15 days after you move out to give your forwarding address to your landlord in writing, then the landlord has 15 days from when you give your address to respond.)

Your landlord must either:

1. return the full security deposit, plus interest, or

2. give you an itemized written statement of the nature and amount of the damages (including lost rent) deducted from your deposit because you violated your obligations.

If your landlord does not return your deposit and does not give you the required written statement, s/he is may have to pay you  twice the amount of your deposit. (A landlord who returns a security deposit, but not the interest owed to the tenant, and gives no written explanation, may have to pay twice the amount of the interest only.)

Give your landlord your forwarding address in writing as soon as you move out. Until you do, your landlord does not have to return your security deposit! If you don’t know where you will be moving, give the landlord an address at which you will receive mail. Send your new (forwarding) address by certified mail with return receipt requested through the US Post Office so you have proof your letter was sent.

How to Dispute Deposit Deductions - Find Connecticut Lawyers 
If a tenant receives a list of deductions, it is possible to dispute items on that list. The deductions should be addressed by the tenant in a letter sent to the landlord. The demand letter should include a response to each of the deductions, explaining which charges are being disputed and why. The tenant should keep a copy of the letter and send the original by certified mail, return receipt requested.

If the tenant receives a partial refund along with the list of deductions and wants to dispute some or all of the deductions, the tenant may want to refrain from cashing the check. If the tenant must cash the check then the tenant should tell the landlord in the letter that even though the check has been cashed, it does not mean the tenant agrees with the amount of the check.

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