Housing decisions

Lease Break Calculator

Estimate the cost of terminating a lease early using the three most common fee structures, then adjust for cleaning, repairs, and the security deposit offset.

Termination estimator

Run the downside math before you make the move

Model the most common lease-break structures, compare every penalty path side by side, and stress-test how much of the bill your deposit can realistically absorb.

Real-time summary

Deposit offset logic

Contract comparison

Remaining lease value

$20,000

Deposit coverage

36%

Current exposure

$3,650

Core input

Monthly rent

USD

Enter the rent you pay each month before utilities, parking, or other extras.

Core input

Remaining term

Months

Enter the number of whole months left on the lease agreement.

Termination structure

Compare every penalty model

Highest path wins

Contract setting

Termination fee selector

Contract type

Use this when the lease requires a certain number of months of rent as the penalty.

Penalty variable

Fixed fee

USD

If the lease names a flat termination amount, enter it here.

Penalty variable

Percentage fee

Enter the percentage applied to the remaining lease value.

Penalty variable

Months of rent

Months

Enter how many months of rent the lease requires as the fee.

Fixed fee path

$3,500

Flat contract buyout amount

Percentage path

Max

$5,000

Percentage of remaining lease value

Months-of-rent path

Max

$5,000

Contracted number of rent months

Adjustment

Additional costs

USD

Add cleaning, repairs, reletting costs, or any manual charges you already know about.

Adjustment

Security deposit amount

USD

Enter the deposit you expect could offset part of the termination bill.

Estimated termination summary

$3,650

This estimate uses the maximum of the three penalty structures, then adds known costs and subtracts the available security deposit offset.

Primary method: months

Base termination fee

$5,000

Highest contract penalty across all supported structures.

Additional fees

$450

Cleaning, repairs, and any other manual charges.

Deposit offset

−$1,800

Security deposit assumed to be available to reduce the bill.

Net estimated penalty

$3,650

Estimated amount still owed after the deposit is applied.

Fixed fee path

$3,500

Percentage path

$5,000

25% of rent remaining

Months-of-rent path

$5,000

2 months of rent

Operator notes

How to use this estimate well

1. Enter your monthly rent and the number of months left on the lease.
2. Fill in the flat fee, percentage fee, and months-of-rent fields from your contract.
3. Add any repair or cleaning charges you expect, then subtract the security deposit amount.
4. Review the net estimate and compare the three penalty paths before you negotiate.

Best use case

Run a base case with the numbers in your lease, then a downside case with higher cleaning and repair assumptions so you know your realistic negotiation range.

Formula

Net penalty = max(fixed fee, percentage path, months-rent path)

+ additional costs

− security deposit

The tool intentionally uses the highest penalty path so the result is conservative rather than overly optimistic.

FAQ

What does this estimate include?

The model compares fixed-fee, percentage, and months-of-rent penalty paths, takes the highest value, adds extra costs, and subtracts the security deposit offset.

Why compare all three fee structures?

Some leases are written ambiguously or mix several penalty concepts. Comparing all three paths gives you a conservative estimate instead of assuming the lowest outcome.

Does this replace legal advice?

No. This is a planning tool for rough financial exposure. Local laws, mitigation duties, and lease-specific clauses can still change the real amount owed.

Planning note

This is an estimate, not a legal cap

State rules, landlord mitigation duties, and lease-specific wording can all change the final number. Use this to frame the decision and prepare for negotiation, not as a substitute for legal advice.