New Hampshire security deposit rules.
The New Hampshire rules for residential security deposits in plain English: how much can be charged, how fast it comes back, whether interest is owed, and what catches operators out.
Last reviewed · Statute: N.H. Rev. Stat. § 540-A · Not legal advice
How much can be charged
One month of rent or $100, whichever is greater.
When it has to come back
30 days from termination, with itemised deductions and supporting documentation.
Interest
If the deposit is held one year or longer, interest accrues at the rate paid on regular savings accounts at the New Hampshire institution holding it, from the date received. The tenant may ask for accrued interest once every three years (30 days before that anniversary, paid within 15 days), and all interest is paid with the deposit at termination.
Where the money has to sit
Deposits must be held in a New Hampshire-located escrow account, separate from operating funds.
What catches operators out
- The $100-floor rule means even tiny rents can attract a deposit cap.
- The 1-year interest trigger is easy to miss for long-term tenants.
What this looks like with Standby in New Hampshire.
When a resident takes a Standby certificate there is no cash deposit to hold, so the cap, the return deadline and the interest rules above have nothing to attach to. You are covered up to the full deposit and draw on it when you need to.
When a resident pays cash instead, Standby handles that deposit under your lease and New Hampshire law, so your team is not tracking return deadlines by hand.
This page summarises the most common single-family and multifamily residential rule in New Hampshire. Furnished units, senior leases, mobile-home tenancies and short-term rentals can differ, and city ordinances may override the state default. Check the statute before relying on a figure for a specific lease.