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Late fee calculator

Calculate late fees per your policy — flat, percentage, or per-day.

The short answer

$2,000 rent with a 5% fee, ten days late after a five-day grace period, is a $100 late fee.

Keep these numbers in Ayillo

Late fee

Flat: a fixed amount. Percentage: rent × fee %. Per day: daily amount × days late after the grace period, capped

Chargeable days late
5 days
Late fee
$100.00
  • Confirm your state and local late-fee limits and required grace period before charging.
Show the arithmetic
  • Chargeable days: 10 − 5 = 5
  • Fee (percent): 100
Worked example

$2,000 rent with a 5% fee, ten days late after a five-day grace period, is a $100 late fee.

Assumptions
  • The grace period is counted in days after the due date; fees start the day after it ends.
  • Late-fee amounts, caps and grace periods are regulated in many states and cities. Enter your own lawful policy — this does not know your local limit.

Every figure is calculated from the values you entered. Nothing is fetched from market data, and this is general information rather than financial, legal or tax advice.

Formula

Flat: a fixed amount. Percentage: rent × fee %. Per day: daily amount × days late after the grace period, capped

What you need

  • Monthly rent
  • Flat fee or daily amount
  • Percentage fee
  • Grace period
  • Days past the due date
  • Maximum fee (0 for none)

Worked example

$2,000 rent with a 5% fee, ten days late after a five-day grace period, is a $100 late fee.

Assumptions and units

  • The grace period is counted in days after the due date; fees start the day after it ends.
  • Late-fee amounts, caps and grace periods are regulated in many states and cities. Enter your own lawful policy — this does not know your local limit.

Limitations

Every figure is calculated from the values you enter — nothing is estimated from market data. Real outcomes depend on your state, your lease terms and your property. This is general information, not financial, legal or tax advice.

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Run this workflow in Ayillo

$49/month includes 5 units, then per-unit pricing that drops as you grow. Optional modules are billed separately and must be added deliberately.

Keep these numbers in Ayillo

30 days free. A card in your own name is required to start — we place a refundable $1 authorization to confirm it, and release it right away. Cancel any month.