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Calcimator

Impact Fee Calculator

Calculate total development impact fees across transportation, water, sewer, parks, and schools.

Inputs

$/unit
$/unit
$/unit
$/unit
$/unit
$/unit

Results

Total Impact Fees

$750,000.00

≈ 18 Teslas

Total per Unit

$15,000.00

≈ 8 gaming PCs

Transportation Total$225,000.00
Water Total$160,000.00
Sewer Total$140,000.00
Parks Total$75,000.00
School Total$110,000.00
Fire/EMS Total$40,000.00
Largest Percent30%
How to Use This Calculator
  1. Enter Total Units for the project — typically residential equivalent units.
  2. Input per-unit impact fees for each category: Transportation, Water, Sewer, Parks, School, and Fire/EMS.
  3. Check your local jurisdiction's fee schedule — fees vary dramatically by city and county.
  4. Review Total Impact Fees and Per Unit Total for use in your development pro forma.
  5. Include impact fees in land acquisition underwriting — they are paid at building permit and affect project feasibility.
  6. Check Transportation and School fees, which are typically the largest components.

How the result changes with Total Units

Total UnitsTotal Impact FeesTotal per Unit
501$7,515,000.00$15,000.00
1,751$26,265,000.00$15,000.00
3,250$48,750,000.00$15,000.00
4,500$67,500,000.00$15,000.00

What each input means

Total Units
Total number of residential units or equivalent.
Transportation Fee
Transportation impact fee per unit.
Water Fee
Water system impact fee per unit.
Sewer Fee
Sewer/wastewater impact fee per unit.
Parks Fee
Parks and recreation impact fee per unit.
School Fee
School impact fee per unit.
Fire/EMS Fee
Fire and emergency services impact fee per unit.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Units = 50, Transportation Fee = 4500, Water Fee = 3200, Sewer Fee = 2800 = 7 input(s) provided
  2. Calculate Total Impact Fees
    Total Impact Fees
    750000 = $750,000
  3. Calculate Total per Unit
    Total per Unit
    15000 = $15,000
  4. Calculate Transportation Total
    Transportation Total
    225000 = $225,000
  5. Calculate Water Total
    Water Total
    160000 = $160,000

Engine last updated . Checked against 1 independently-derived test — how we verify calculators.

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