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ITC vs PTC comparison with all Inflation Reduction Act bonus adders
The calculator applies OBBBA phase-down multipliers automatically when a Beginning of Construction (BOC) date is provided. Projects without BOC before the July 4, 2026 deadline face reduced or eliminated credit eligibility for wind and solar technologies.
Configure project parameters to compare ITC vs PTC
Can elect either ITC or PTC (Section 48/48E or 45/45Y). Low-income adder available for <5 MW. OBBBA: ITC/PTC terminated for PIS after Dec 31, 2027 unless BOC before July 4, 2026.
IRA bonus credits stack on top of the base rate
Only for projects under 5 MW
Recommended
PTC
ITC Credit Value
$36.0M
PTC 10-Year Total
$64.2M
NPV Advantage
-$9.9M
Break-even CF: 19.3% -- Your CF is above break-even, so PTC is preferred.
One-time credit claimed in the tax year the project is placed in service
| Component | Rate | Status |
|---|---|---|
| Base Rate | 30.0% | |
| Prevailing Wage & Apprenticeship | +24.0% (included in base) | |
| Domestic Content | +0.0% | Off |
| Energy Community | +0.0% | Off |
| Low-Income Community | +0.0% | N/A |
| Total ITC Rate | 30.0% |
Total CapEx
$120.0M
$120,000,000
ITC Credit Value
$36.0M
$36,000,000