New Jersey security deposit law, without the guesswork.

The cap and the account: 1.5 months, held in trust

New Jersey caps a security deposit at one and one-half months' rent. You cannot collect more up front, and while you may increase the deposit over time, any annual increase is limited to ten percent of the current deposit. First month plus one and a half months of deposit is the ceiling at signing.

The money is not yours to hold in a shoebox or a personal account. It must sit in a separate, New Jersey-based insured interest-bearing account or an approved money-market investment, kept apart from your own funds. The tenant's deposit is held in trust, and commingling it with your operating money is itself a violation.

The 30-day notice most landlords never send

Within thirty days of receiving the deposit, you must give the tenant written notice of where it is held: the name and address of the bank, the type of account, the current interest rate, and the amount deposited. You owe a fresh notice again whenever you move the money to a new bank or account, and at each annual interest payment.

This is the single most-skipped requirement in the statute, and it has teeth. If you fail to give the required notice, the tenant can send you written notice applying the full deposit toward rent, and once they do, you lose the right to hold a deposit at all for that tenancy. A one-page letter at move-in avoids the entire problem.

Move-out: 30 days, itemized, in writing

When the tenancy ends, you have thirty days from the date the tenant surrenders the unit to return the deposit, plus any earned interest, minus lawful deductions, and to send an itemized written statement of what you kept and why. In certain displacement situations, fire, flood, condemnation, or eviction, the clock shrinks to five days. Send it by personal delivery or by certified or registered mail so you can prove you did.

Deductions are limited to unpaid rent and charges and to damage beyond ordinary wear and tear. Normal wear, faded paint, worn carpet, minor nail holes, is not chargeable. A cracked door, a burned countertop, a hole in the wall is. The difference is exactly where disputes live, which is why move-in and move-out condition reports with dated photos are worth more than any lease clause.

Why sloppy deposits cost double

The penalty is what makes this law dangerous to wing. A landlord who wrongfully withholds a deposit, or who blows the deadlines and itemization, can be ordered to pay the tenant double the amount wrongfully withheld, plus court costs and, often, the tenant's attorney fees. A judge does not need to find bad faith; the deposit rules operate close to strict liability.

The defense is boring and effective: cap the deposit correctly, park it in the right account, send the move-in notice, document condition at both ends, and return the balance with an itemized statement inside thirty days. We run this exact checklist on every unit we manage, which is why deposit disputes almost never become deposit lawsuits.