Carbon Credit Calculator Formula

Understand the math behind the carbon credit calculator. Each variable explained with a worked example.

Formulas Used

Net Revenue

net_revenue = gross_value - broker_fee - verification_cost

Gross Value

gross_out = gross_value

Total Costs

total_costs = broker_fee + verification_cost

Net per Credit

net_per_credit = (gross_value - broker_fee - verification_cost) / credits_tons

Variables

VariableDescriptionDefault
credits_tonsCarbon Credits Generated(metric tons CO2e)500
price_per_creditPrice per Credit(USD)30
verification_costVerification Cost(USD)5000
broker_pctBroker Commission(%)10
gross_valueDerived value= credits_tons * price_per_creditcalculated
broker_feeDerived value= gross_value * broker_pct / 100calculated

How It Works

How to Calculate Carbon Credit Value

Carbon credits represent verified emission reductions that can be sold on voluntary or compliance markets.

Formula

Gross Value = Credits (tons) * Price per Credit

Net Revenue = Gross Value - Broker Fee - Verification Cost

Market Prices

  • Voluntary market: $5-50/ton
  • EU ETS allowances: $55-80/ton
  • RGGI (US): $12-15/ton
  • Worked Example

    A project generates 500 credits at $30 each, with $5,000 verification and 10% broker fee.

    credits_tons = 500price_per_credit = 30verification_cost = 5000broker_pct = 10
    1. 01Gross value: 500 * $30 = $15,000
    2. 02Broker fee: $15,000 * 10% = $1,500
    3. 03Total costs: $1,500 + $5,000 = $6,500
    4. 04Net revenue: $15,000 - $6,500 = $8,500
    5. 05Net per credit: $8,500 / 500 = $17.00/ton

    Frequently Asked Questions

    What is a carbon credit?

    A carbon credit represents one metric ton of CO2 equivalent that has been reduced, avoided, or removed. Credits are verified by third-party standards like Verra or Gold Standard.

    What is the difference between compliance and voluntary credits?

    Compliance credits are required by regulations (e.g., EU ETS) and trade at higher prices. Voluntary credits are purchased by organizations choosing to offset, typically at lower prices.

    How are carbon credits verified?

    Projects undergo independent third-party audits to confirm emission reductions are real, additional, permanent, and measurable. Verification adds cost but ensures credibility.

    Ready to run the numbers?

    Open Carbon Credit Calculator