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Calcimator

ITC/PTC Calculator

Investment and production tax credit for solar projects.

Inputs

Results

Best credit value ($)

$600,000.00

Effective ITC rate (%)30%
ITC credit amount ($)$600,000.00
Annual PTC credit ($)$40,150.00
Total PTC over 10 years ($)$401,500.00
PTC net present value ($)$281,997.00
Recommended (1=ITC, 2=PTC)1
Effective project cost ($)$1,400,000.00
Annual production (kWh)1,460,000
Tax Equity Value$2,857,142.86
How to Use This Calculator
  1. Enter the total project cost and system capacity in kW DC.
  2. Set peak sun hours and system derate factor for annual production estimates.
  3. Toggle prevailing wage (required for full 30% ITC), domestic content bonus, and energy community bonus.
  4. Enter the current PTC rate and federal tax rate.
  5. Review the recommended credit (ITC vs. PTC), credit value, and effective project cost after incentives.
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