Quick Answer
New Jersey limits a security deposit to 1.5 months’ rent (N.J.S.A. 46:8-21.2). Any additional deposit collected in a later year cannot exceed 10% of the current deposit. Under N.J.S.A. 46:8-21.1, the deposit is returned within 30 days after the tenancy ends. If the tenant leaves because of fire, flood, condemnation or evacuation, the deadline is five days, and if the tenancy ends due to domestic violence, 15 business days. Statute text last checked October 22, 2026.
Key Takeaways
- 1.5 months. The ceiling for a security deposit.
- 10% increases. A later-year top-up cannot exceed 10% of the current deposit.
- Thirty days. The standard return period after the tenancy ends.
- Five days or 15 business days. Shorter deadlines apply in the listed special cases.
- Document both ends. Receipt at move-in, accounting at move-out.
1. The Cap
On $2,000 monthly rent, 1.5 months is $3,000. Put the rent, the multiple and the deposit amount side by side in the lease. Collect only up to the cap, and keep the receipt.
2. Later-Year Increases
If rent rises, you may collect more deposit, but the added amount in any later year cannot exceed 10% of the current deposit. Calculate the new total against the 1.5-month ceiling as well, and record the date and amount of each addition.
3. The 30-Day Return
The 30 days run from the end of the tenancy. Prepare the accounting during the final walkthrough: the deposit, interest, each deduction with a reason, and the balance. Mail or hand deliver within the period and keep proof.
4. Shorter Deadlines
The statute lists shorter deadlines when a tenant leaves because of fire, flood, condemnation or evacuation (five days) and when the tenancy ends due to domestic violence (15 business days). Keep these dates in mind when a tenancy ends suddenly.
5. Where the Money Is Held
Deposit holding and interest are separate duties, covered in the companion guide. The accounting at move-out should include interest earned.
6. A Checklist
- Confirm the deposit is within 1.5 months’ rent.
- Record the date and amount received.
- Track later-year additions against the 10% limit.
- Finish the walkthrough and prepare the accounting.
- Return the balance with the accounting within the deadline.
Building the Move-Out File
Keep one folder per tenancy: the lease, the receipt for the deposit, the bank disclosure letter, the move-in condition report, move-out photographs, repair invoices, and the final accounting. When the folder is organized from day one, the 30-day return is a matter of assembling what you already have. Review the folder at renewal, too.
7. What This Guide Does Not Cover
This guide covers the cap and return deadlines. It does not cover deposit account rules, interest calculation, or the court process. Confirm current text on the New Jersey Legislature site, because this summary draws on a secondary source. It states the statute and does not predict how a court will rule.
8. Questions Owners Ask
Can I ask for more deposit after a rent increase? Within the limits: a later-year addition cannot exceed 10% of the current deposit.
When does the 30 days start? After the tenancy ends.
Is a pet deposit separate? Treat anything held as a deposit with care and check the total against the cap.