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IRA Tax Credit Guide (2026 Edition)
The definitive reference for developers and finance teams. All 7 federal credits, bonus adders, transferability, direct pay, state stacking, and compliance — ~4,000 words with tables and worked examples.
- 7 federal credits explained
- Bonus adder stacking math
- Transferability vs direct pay
Tools, Guides & Databases
Incentive ROI Calculator
Input your project type, size, location, and technology to get an instant estimate of your total IRA incentive stack — federal, state, and utility programs combined.
- 60-second results
- Federal + state + utility
- Export to PDF
IRA Due Diligence Checklist
A 47-point checklist for verifying IRA tax credit eligibility before closing. Covers prevailing wage, domestic content, energy community classification, and recapture risk.
- 47-point checklist
- Prevailing wage verification
- Recapture risk flags
Federal Incentives Database
Browse the complete federal IRA incentive landscape. Filter by credit type, technology, project size, and entity type. Backed by 848,995 verified programs.
- ITC, PTC, 45L, 179D, 45Q, 45V, 48C
- Bonus adder eligibility
- Updated daily
State Incentives
Comprehensive index of state clean energy incentive programs by state, technology, and credit type. Stacks with federal IRA credits.
- All 50 states covered
- PACE, green banks, SREC
- Stacking guidance
Direct Pay (§6417)
Tax-exempt entities — municipalities, nonprofits, tribal governments — can elect direct cash payment for IRA credits at full face value. See eligibility and calculator.
- Municipalities & nonprofits
- Full face value refund
- Eligibility calculator
Direct Pay Calculator
Enter your organization type and project details to check §6417 eligibility and estimate your potential direct pay credit value, including all applicable bonus adders.
- 6 entity types
- Bonus adder modeling
- Instant estimates
API & Developer Docs
Programmatic access to 848,995 incentive programs. Build incentive calculators, automate eligibility matching, and embed clean energy credit data into any platform.
- REST API
- OpenAPI 3.1 spec
- Python / Node / Go SDKs
Incentive Glossary
Plain-language definitions for every IRA term — from MACRS and ITC basis to energy communities, safe harbor, and prevailing wage. Referenced by our research team.
- 100+ terms defined
- IRC section references
- Plain language