FreeByte

Lease mileage overage calculator

Cost of driving past the allowance.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$

Overage charge

$3,000

Excess miles

12,000

With these inputs, overage charge comes to $3,000 over 3 years. Excess miles works out to 12,000.

Per month set aside
$83.33

Over time · by lease years

What moves the number · Overage charge

Input−10%Now+10%
Allowance per year$3,750$3,000$2,250
Actual miles per year$1,950$3,000$4,050
Lease years$2,700$3,000$3,300
Fee per mile$2,700$3,000$3,300

Solve for an input

Whatmakesequal

Compare scenarios

Save this set of inputs, change something, then save again to compare the outcomes side by side.

Cost of driving past the allowance.

A worked example

Starting figures

Allowance per year
10,000
Actual miles per year
14,000
Lease years
3
Fee per mile
$0.25

What it returns

Overage charge
$3,000
Excess miles
12,000
Per month set aside
$83.33

How to read the results

With the defaults above, overage charge works out at $3,000.

Related calculators

Motorcycle running cost calculatorCommute comparison calculatorMileage reimbursement calculatorLegacy calculatorCar maintenance budget calculatorCar total cost of ownership calculator