Iowa security deposit law: two months, 30 days and a landlord who carries the proof

How much can you collect, and where does it go?

Subsection 1 is short: a landlord shall not demand or receive a security deposit above two months' rent. Subsection 2 then says every rental deposit is held for the tenant in a bank, savings and loan association or credit union insured by a federal agency, and is not mixed with the landlord's personal funds. The statute allows a common trust account, and the account may earn interest.

The interest rule favors the owner. Interest earned on a deposit during the first five years of a tenancy belongs to the landlord, so you owe the tenant no interest for a tenancy that short. The section does not say what happens to interest after year five, so a long-term tenant is a question for a local attorney.

When does the 30-day clock start?

Subsection 3 gives you thirty days from the date the tenancy ends and you receive the tenant's mailing address or delivery instructions. Both conditions must be met. A tenant who moves out on the 1st and tells you nothing has not started your clock, which is why a written forwarding address request in your move-out checklist is worth the line.

Within that window you either return the whole deposit or send a written statement of the specific reason for withholding. If any money is held back for restoring the unit, the statement must also describe the nature of the damages. Specific means specific: "cleaning" is weaker than "steam clean two bedroom carpets, stained beyond ordinary use."

Example a made-up tenant leaves a $1,800 unit on June 30 with a $1,800 deposit and gives a forwarding address on July 3. The thirty days run from July 3, so the landlord's deadline is August 2. A statement mailed on July 20 that keeps $240 for carpet damage and returns $1,560 is inside the window.

What may you deduct for?

The statute lists three reasons, and the amount must be reasonably necessary:

1. To cover rent the tenant did not pay, or other money due under the rental agreement.
2. To restore the unit to its condition at the start of the tenancy, ordinary wear and tear excepted.
3. To recover costs of getting possession from a tenant who does not act in good faith about leaving after a noncompliance notice.

In a deposit case, the landlord carries the burden of proving the reason for withholding by a preponderance of the evidence. That is a practical instruction: dated move-in and move-out photos, receipts and a signed condition checklist are the proof the court will ask for.

What happens if you miss the deadline?

Subsection 4 is blunt. A landlord who fails to provide the written statement within thirty days of termination and receipt of the address forfeits all rights to withhold any portion of the deposit. The other side has a clock too: if the tenant gives no address or instructions within one year after the tenancy ends, the deposit reverts to the landlord and the tenant is deemed to have forfeited the claim.

Subsection 7 adds a bad-faith penalty. Retaining the deposit, or part of it, in bad faith can bring punitive damages up to twice the monthly rent on top of actual damages. Subsection 8 lets the court award reasonable attorney fees to the prevailing party, so a weak deduction can cost more than the deduction.

What if you sell the building?

When your interest in the unit ends, you must within a reasonable time transfer the deposit, or what is left after lawful deductions, to the buyer and notify the tenant of the transfer and the new owner's name and address, or return it to the tenant. Once you do, you are relieved of further liability. The buyer takes over the rights and duties, and the buyer's responsibility is limited to the notified amount unless the tenant objects within twenty days of the written notice, which must include a stamped envelope addressed to the buyer.

How DoorKeeping helps in Iowa

DoorKeeping keeps each tenant's deposit as its own line on the property's books, records the date a forwarding address arrives, and shows the thirty-day date on your list. It can draft the statement from your move-in and move-out records for you to read and approve; nothing goes out until you tap. Your money stays in your own bank account. This is general information, not legal advice. Check the current statute or ask a local attorney before you rely on it.

Sources

1. Iowa Code 562A.12, Rental deposits (Iowa Legislature), read Oct 30, 2026

Questions

What is the maximum security deposit in Iowa?

Two months' rent. Iowa Code 562A.12(1) says a landlord shall not demand or receive more.

How long does an Iowa landlord have to return a deposit?

Thirty days from the end of the tenancy and receipt of the tenant's mailing address or delivery instructions, by returning the deposit or sending a written statement of the reasons for withholding.

Does a landlord owe interest on an Iowa deposit?

Interest earned during the first five years of a tenancy belongs to the landlord, so none is owed to the tenant for that period.

What is the penalty for bad-faith withholding in Iowa?

Punitive damages up to twice the monthly rent in addition to actual damages, and the court may award attorney fees to the winning side.