Arizona Late Fee Calculator

No cap no general late fee rule in the law we read; see the note below
Rent limit
None in A.R.S. §§ 33-1301 to 33-1381; mobile home park and recreational vehicle long-term rental space leases have a separate rule (below)
Earliest fee day
–
Statute
A.R.S. §§ 33-1301 to 33-1381
Checked
What was not paid on time. Copies the rent until you type here.
How the lease sets the late fee
How many days the lease gives before a late fee; 0 if none.

Your late fee

$62.50

Paid 12 days late; the lease has no grace period.

Days past due
12 days
Grace period ends
No grace period
Earliest fee date
October 20, 2026
Lease late fee
5% of $1,250.00 = $62.50
Rent + late fee
$1,312.50

Arizona: A.R.S. §§ 33-1301 to 33-1381 contains no late fee provision, so there is no legal cap or waiting period to apply; only your lease terms count.

Late rent notice builder

Who it is from and to
Amounts
Taken from the calculator. Set 0 if the rent itself is paid.
Taken from the result; you may change it.
Adds the two above until you type your own figure.
Blank: the letter asks for payment at the earliest opportunity.
Payment and contact
Where and how the tenant can pay.
Late rent notice

[Your name or company]

Date: October 31, 2026

To: [Tenant name]

[Rental property address]

Re: Overdue rent for [Rental property address]

Dear [Tenant name],

This letter is a reminder that the rent of $1,250.00 for [Rental property address] was due on October 19, 2026. As of October 31, 2026, $1,250.00 of it is still unpaid (12 days past due).

Your lease provides for a late charge, which comes to $62.50.

Amount now due

Unpaid rent
$1,250.00
Late charge
$62.50
Total
$1,312.50

Please pay $1,312.50 at your earliest opportunity.

If this letter crossed with your payment, please disregard it.

Regards,

[Your name or company]

10% legal default rate (contract silent)
Max written B2B rate
No cap — any rate agreed in writing is lawful.
Cap regime
No statutory cap
Statute
A.R.S. §§ 44-1201, 44-1202
Verified
— how we verify · changelog

Legal rate when no rate is agreed in writing.

Pre-filled with Arizona's statutory default (10%), which governs only when the contract names no rate; a rate stated in your contract replaces it.

Interest at 10% a year

Interest owed on an overdue invoice in Arizona at 10% per year
Invoice amount30 days late60 days late90 days late
$1,000.00$8.22$16.44$24.66
$5,000.00$41.10$82.19$123.29
$10,000.00$82.19$164.38$246.58

Maximum late fee in Arizona — written B2B contracts

No statutory cap

Basis: A.R.S. §§ 44-1201, 44-1202.

About this page

Mobile home parks in Arizona

This applies to mobile home park tenancies only: the lease must give the tenant at least five days past the due date before any late penalty, and if the rent is still not paid by the sixth day the penalty can be up to five dollars a day, counted from the due date.

A. A rental agreement shall not provide that the tenant agrees to: [...] 4. Permit the landlord to charge a penalty fee for late payment of rent unless a tenant is allowed a minimum of five days beyond the date the rent is due in which to remit payment. [...] C. A landlord may charge a penalty fee of not to exceed five dollars per day from the due date of the rent for late payment of rent if the payment is not remitted by the sixth day from the due date.
— A.R.S. § 33-1414(A)(4), (C). Read it at the official source · checked .

Recreational vehicle spaces in Arizona

This covers recreational vehicle long-term rental space agreements only: if rent is still unpaid by the sixth day after it was due, the agreement may charge at most five dollars a day, counted from the due date until payment.

The rental agreement shall be for a specific period and: [...] 2. May provide that the landlord may charge a late fee of not more than five dollars per day from the due date of the rent until the rent is paid if the rent is not remitted by the sixth day after the due date.
— A.R.S. § 33-2105(A)(2). Read it at the official source · checked .

Arizona rent late fee law

Arizona's landlord and tenant act for dwellings names no maximum late fee and no grace period; late fees appear in it only as charges stated in the written rental agreement.

Read in full for this check: Arizona Revised Statutes, Title 33, chapter 10 (Arizona Residential Landlord and Tenant Act). Official source · checked .

Before you send the late rent notice: it is a reminder letter about overdue rent and a late charge, not an eviction notice. A notice to pay rent or quit is a separate document, and Arizona has its own rules for it. Nothing on this page is legal advice.

What Arizona law says about invoice interest

For any loan, indebtedness or obligation other than medical debt, interest shall be at the rate of ten percent a year, unless a different rate is contracted for in writing, in which event any rate of interest may be agreed to.
— A.R.S. § 44-1201(A)(2). Read it at the official source · row verified 2026-08-19.

No usury ceiling: any rate is lawful if agreed in writing. The 10% figure is only a gap-filler when the contract sets no rate.

Not legal advice. Figures were last verified on the date shown; check the cited statute before charging a late fee.