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⏰ Late Fee Calculator

Calculate late fees for overdue rent using flat fee, percentage, or daily rate structures. Track collection timeline and non-payment action steps.

📍 Property Address (optional)
InputsYour Numbers
Lease Terms
Monthly Rent?
$
Grace Period (days)?
Days Late?
Late Fee Structure
Flat Late Fee ($)?
$
Percentage Late Fee %?
%
Daily Fee (if applicable)?
$
Pro Forma (Extended Non-Payment)
Extended Late Days?
As-Is AnalysisCurrent
Enter values to see results
Late Fee Owed
--
at current days late
Days in Grace Period
--
before fee applies
Billable Days Late
--
after grace period
Total Owed (rent + fee)
--
if collecting today
Late Fee Calculation
Days Late (from due date)--
Grace Period--
Billable Days After Grace--
Flat Fee--
Percentage Fee--
Daily Fee (if applicable)--
Total Late Fee--
Collection Summary
Unpaid Rent--
Late Fee--
Total Amount to Collect--
Pro FormaAfter Plan
Enter pro forma values
Fee at 30 Days Late
--
extended non-payment
Eviction Notice Timing
--
guideline
Total Loss at 30 Days
--
rent + costs
Days Until Eviction Can File
--
typical timeline
Non-Payment Timeline
Day 1-3 (grace)--
Day 5 (fee kicks in)--
Day 10 (serve notice)--
Day 30 (total owed)--

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1
Set Your Grace Period
Most leases give 3-5 days. Rent is 'due' on the 1st but a late fee doesn't apply until day 4 or 6. The calculator calculates billable days after the grace period.
2
Choose Your Fee Structure
Use the higher of flat fee or percentage (most states allow this). A $75 flat fee or 5% of $1,500 rent = $75 -- same result. On $2,500 rent, 5% = $125 which beats the flat fee.
3
Check Your State's Law
Most states cap late fees at 5-10% of rent. California caps at 5-6%; Texas has no cap. Daily fees are prohibited in some states. Check your state's landlord-tenant law.
4
Document Everything
Late fee provisions must be clearly written in the lease to be enforceable. Verbal late fee agreements generally won't hold up in court.
5
Know the Eviction Timeline
The pro forma shows what happens at day 5, 10, and 30. After grace period expires, serve a 3-day pay-or-quit notice. Non-payment after that = file for eviction.
6
Act Consistently
Late fees only work as a deterrent if enforced consistently. Waiving fees occasionally trains tenants that late payment has no consequences.

Late fees serve two purposes: compensating the landlord for the inconvenience of late payment, and incentivizing timely rent. They must be in the lease, comply with state limits, and be enforced consistently.


Most states allow late fees of 5-10% of the monthly rent or a flat fee of $25-100. A few states (California, for example) have strict caps. Check your state's specific rules before setting your late fee structure.


Procedure when rent is late: wait until grace period expires, send a written 3-day Notice to Pay or Quit (in most states), then if rent remains unpaid, begin the eviction process. Accepting partial payment can complicate evictions -- consult a local attorney.

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