Arizona Late Fee Laws for Landlords (2026)
What the statute actually says
Arizona requires only “a reasonable late fee set forth in a written rental agreement.” No percentage or dollar limit is defined, and the fee is unenforceable if it is not in the written lease.
Citation: Ariz. Rev. Stat. § 33-1368(B) · read the source
Is there a grace period in Arizona?
No statutory grace period was found in the chapter cited above. That does not make a fee charged on day one automatically safe - a court still asks whether the fee is reasonable - but Arizona does not set a waiting period by statute. Whatever grace you give should be written into the lease so both sides are working from the same date.
Does the fee have to be in the lease?
Yes. Arizona requires the late fee to be stated in the written rental agreement. A fee that is not in the lease is not collectable, no matter how reasonable the amount.
Charging it without getting it wrong
Most late-fee disputes are not about the amount. They are about the date the clock started, whether the fee was in the lease, and whether a payment got applied to the fee before the rent. Those are bookkeeping problems, and they are the ones that lose in court.
LandlordPro applies the grace period you set, charges the fee once, and applies payments to rent before fees, so the ledger tells the same story the statute does. The rent roll shows exactly which day a charge landed and why, and the tenant sees the same breakdown in their portal.
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Start freeFrequently asked questions
What is the maximum late fee a landlord can charge in Arizona?
Arizona does not set one by statute. Arizona requires only “a reasonable late fee set forth in a written rental agreement.” No percentage or dollar limit is defined, and the fee is unenforceable if it is not in the written lease.
How many days late before a landlord can charge a fee in Arizona?
Arizona sets no statutory grace period, so the lease governs. Put the number of days in writing.
Does a Arizona late fee have to be in the lease?
Yes. The statute requires the fee to be set out in the written rental agreement, so a fee charged without one is not enforceable.
Can a landlord charge a late fee every month the rent stays unpaid in Arizona?
Arizona does not address repeat fees by statute. Compounding a fee month after month on the same unpaid rent is the kind of charge courts treat as a penalty, so it is a risk worth avoiding.
Is a late fee the same as interest in Arizona?
No. A late fee is a one-off charge for the administrative cost of a late payment. Interest accrues over time and is regulated separately. Charging both on the same rent invites a challenge.