Hawaii Late Fee Calculator

8% most a lease may charge as a late fee
Rent limit
8% of the monthly rent
Earliest fee day
Day 1 after the due date
Statute
HRS § 521-21(f)
Checked
What was not paid on time. Copies the rent until you type here.
How the lease sets the late fee
Pre-filled with the Hawaii limit; type the figure from your lease.
How many days the lease gives before a late fee; 0 if none.

Your late fee

$100.00

At the legal limit

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

The lease asks for $100.00, exactly the most HRS § 521-21(f) permits on these figures.

Days past due
12 days
Grace period ends
No grace period
Earliest fee date
October 20, 2026
Lease late fee
8% of $1,250.00 = $100.00
Legal maximum
$100.00
Rent + late fee
$1,350.00

Limit set by Hawaii (8% of the monthly rent): $100.00

8% × $1,250.00 monthly rent = $100.00

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 $100.00.

Amount now due

Unpaid rent
$1,250.00
Late charge
$100.00
Total
$1,350.00

Please pay $1,350.00 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 for non-consumer transactions — any rate may be stipulated by written contract.
Cap regime
No statutory cap
Statute
HRS §§ 478-2, 478-4(c)
Verified
— how we verify · changelog

Legal rate when there is no express written contract fixing a different rate.

Pre-filled with Hawaii'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 Hawaii 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 Hawaii — written B2B contracts

No statutory cap

Basis: HRS §§ 478-4(c), 478-8.

About this page

Hawaii rent late fee law

Hawaii: if the rental agreement provides for a late charge on rent not paid when due, that charge can be at most 8% of the rent due.

(f) Where the rental agreement provides for a late charge payable to the landlord for rent not paid when due, the late charge shall not exceed eight per cent of the amount of rent due.
— Haw. Rev. Stat. § 521-21(f). Read it at the 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 Hawaii has its own rules for it. Nothing on this page is legal advice.

What Hawaii law says about invoice interest

When there is no express written contract fixing a different rate of interest, interest shall be allowed at the rate of ten per cent a year [...] With respect to any transaction other than a consumer credit transaction, a home business loan, or a credit card agreement, it shall be lawful to stipulate by written contract for any rate of interest not otherwise prohibited by law.
— HRS §478-2 (first clause); HRS §478-4(c). Read it at the official source · row verified 2026-08-19.

No ceiling for non-consumer deals: any rate may be set by written contract. A B2B invoice is neither consumer credit nor a home loan, so it is uncapped.

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