Connecticut Security Deposit Rules (2026): The 21-Day Deadline, Interest and Deductions

Connecticut changed its security deposit deadline in 2023, cutting the time a landlord has to return your money from 30 days to 21. The state also caps deposits, requires interest and penalizes landlords who miss the deadline. This guide explains the rules in plain English and how to move out so cleaning and damage charges do not eat into your deposit. It is general information, not legal advice; check the current statute (Connecticut General Statutes §47a-21) or ask a lawyer about your own situation.

Connecticut deposit rules at a glance

• Cap: no more than two months’ rent; no more than one month’s rent for tenants aged 62 or older
• Escrow: the landlord must hold the deposit in an escrow account in a Connecticut financial institution
• Interest: paid every year on the anniversary of the tenancy, at a rate set each year by the Banking Commissioner (0.49% for 2026)
• Return deadline: 21 days after the tenancy ends, or 15 days after receiving your forwarding address in writing, whichever is later
• Itemized notice: any damage claimed must be listed in writing, with the amount, and the balance returned
• Penalty: a landlord who misses the deadline or fails to send the notice can be liable for twice the deposit

The forwarding address matters

The 21-day clock only works in your favor if the landlord knows where to send the money. Give your forwarding address in writing, and keep proof. The Connecticut Department of Banking recommends certified mail with a return receipt. If you never send one, the landlord’s deadline is 15 days after they receive it, whenever that is, so do it before you leave.

What a landlord can deduct

A Connecticut landlord can use the deposit to cover rent or other charges you owe under the lease and the cost of repairing damage you caused beyond normal wear and tear. Normal wear and tear is the decline that comes from living in a home: faded paint, light scuffs, worn carpet in walkways, small picture-hook holes. Damage is harm beyond that: holes in walls, burns, broken fixtures, pet damage to floors and trim.

Cleaning sits in between. A home left with a greasy oven, a filthy fridge or heavy grime can lead to a claim for the cost of putting it right, while ordinary dust after you move out should not. Rather than argue about where the line is, leave the home clean and photograph it.

Typical Connecticut move-out items

Usually wear and tear	Can lead to a deduction
Light scuffs on paint	Large holes or unapproved paint colors
Worn carpet in hallways	Burns, pet stains or tears
Dust on sills after moving out	Heavy grease in the oven and range hood
Loose cabinet hinges	Broken doors or cracked counters
Faded blinds	Missing or broken blinds and screens

Interest on your deposit

Connecticut is one of the states where a deposit earns interest for the tenant. The Banking Commissioner sets the rate each year, and for 2026 it is 0.49%. Interest is paid on each anniversary of the tenancy, either directly or as a credit against the next month’s rent. You can lose interest for any month in which rent was paid more than ten days late, unless the lease already charges a late fee. Any interest still owed is due with the deposit at the end.

Protect yourself at move-in

Connecticut does not require a move-in condition checklist, so your own record is your best protection. On the day you get the keys, take dated photos and video of every room: inside the oven, fridge and cabinets, the bathroom grout, the floors, walls, windows and screens, and the basement or storage area. Email a short list of existing problems to the landlord and keep the reply.

A move-out plan that protects your deposit

• Three weeks out: book your move-out clean for the day after the movers, and ask the landlord to walk through the unit with you
• Two weeks out: send your forwarding address by certified mail
• The day before: defrost and empty the fridge and freezer
• Moving day: remove everything, including the basement storage area, porch and garage
• Cleaning day: kitchen, bathrooms, vents, baseboards, windows and floors, then photograph every room
• Keys: return them in a way you can prove, and note the date

What Connecticut landlords check first

After the oven and bathrooms, Connecticut landlords look at the things winter leaves behind: salt stains on entry floors and stair runners, dust on baseboard heaters and vents, and the condition of the basement storage area. Students leaving apartments around UConn at the end of May should also expect the landlord to check every window screen and the fridge. Our move-out cleaning starts at $190 and follows that checklist; inside appliances and carpet cleaning can be added where offered.

Keep a simple paper trail

Most deposit disputes come down to what each side can prove. Keep a folder, paper or digital, with the lease, the receipt or bank details for the deposit, your move-in photos and list, any repair requests you sent during the tenancy, your move-out photos, the cleaning receipt and proof of when you sent your forwarding address and returned the keys. It takes ten minutes to assemble and can be the difference between a quick refund and a long argument.

Ask for a walk-through

Connecticut law does not require a joint move-out inspection, but most landlords will agree to one if you ask. Walking through the unit together, with the keys in hand, is the best moment to settle small questions: a scuff that can be touched up, a fridge shelf that needs another wipe. Bring your move-in photos. If the landlord points out something you missed, you may be able to fix it on the spot rather than see it on an itemized list three weeks later.

Notes for seniors and students

Tenants aged 62 and older have a lower cap: a landlord cannot ask for more than one month’s rent as a deposit, and a tenant who turns 62 during a tenancy may be entitled to the return of any amount above one month’s rent. Students renting near UConn and other campuses should remember that every roommate on the lease shares responsibility for the condition of the unit. Agree who cleans what before move-out week, or book one professional clean after the last roommate leaves and split the cost.

If your deposit isn’t returned

If the deadline passes, write to the landlord with your forwarding address, the date you moved out and the amount owed, and cite §47a-21. Keep copies. If that does not work, you can file a complaint with the state’s security deposit program, which can investigate and help recover deposits, or bring a claim in small claims court, where the double-damages rule applies. Legal aid organizations and the Department of Banking’s rental security deposit pages explain each step.

What to do next

Planning a move? Get a free quote with your move date, or see the Connecticut areas we cover for move-out cleaning, including Hartford, West Hartford, Storrs and Norwalk.