Finance category
Mortgage, loan, investing, tax, and money calculators.
Green Energy Tax Credit Rental Calculator
Green tax credits add value. This calculator sizes.
Total credit value
$762,000
Total 45L credit
$750,000
Total 179D deduction value
$12,000
How the math works
45L = units × credit. 179D deduction × tax rate = tax value. Total credit = sum.
150 units × $5k = $750k credit. 8k SF × $5 = $40k deduction × 30% = $12k. Total $762k tax benefit — real money. Document efficiency standards and obtain third-party certifications.
How to Use
- Enter new unit count.
- Enter per-unit 45L credit.
- Enter commercial SF.
- Enter 179D deduction/SF.
- Enter marginal tax rate %.
- Read total credit value.
Frequently Asked Questions
45L credit?
Energy-efficient new residential construction. $5,000/unit for zero-energy ready homes. $2,500/unit for Energy Star. Available for new multifamily construction meeting standards. Certified by qualified tester. Applied as tax credit (dollar-for-dollar tax reduction).
179D deduction?
Commercial building energy efficiency. Up to $5/SF deduction for meeting efficiency thresholds. Applies to HVAC, lighting, building envelope. Architects/engineers can claim for government-owned buildings (allocation). Building owner otherwise.
Combining?
Solar ITC (30%+ federal) stacks with 45L, 179D, state credits. Typical multifamily development: $7k-15k/unit in combined tax benefits. Major component of development return — don't leave on the table. CPA specialization required.
Related Calculators
More Finance Calculators
Browse all finance →AI Cost Calculator
Compare token costs across OpenAI, Anthropic, and Google AI models. Calculate monthly API spending for GPT-4o, Claude, Gemini, and more.
Tip Calculator
Calculate the perfect tip and split the bill between friends. Choose preset percentages or enter a custom tip amount.
Bill Splitter Calculator
Split an uneven restaurant bill by item, divide tax and tip proportionally, and see exactly who owes whom.
Discount Calculator
Calculate sale price, discount amount, stacked discounts, sales tax, and total savings for any markdown.
Gas Mileage Calculator
Calculate MPG or km/L, estimate trip fuel cost, and compare annual fuel expenses between two vehicles.
Sales Tax Calculator
Add sales tax to a price, reverse-calculate the pre-tax amount from a total, and estimate tax for multiple items on one receipt.
Keep exploring