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Sebi bans Rajesh Exports' CMD for fin irregularities · 2 hours ago RBI rejects bids for treasury bills, move signals lower rates · 2 hours ago Interest in India strong despite volatility: Bank of America chief · 2 hours ago Govt sets aside Rs 10k crore to cap jet fuel price, keep air fares in check · 2 hours ago Exporters keep tabs on USTR probe, trade talks · 2 hours ago Tech stocks slide on AI fears, oil gives Dalal Street a headache · 2 hours ago BHEL secures order worth over Rs 2,000 crore from Nigerian firm · 4 hours ago District economy data: Govt issues uniform framework for district GDP estimates with 2022-23 base year · 5 hours ago Rupee slides 40 paise to 95.76 against dollar as tariff concerns, oil prices weigh on sentiment · 6 hours ago India’s 500 GW clean energy goal could create 44 lakh jobs, says study · 6 hours ago India's economy shows resilience amid geopolitical uncertainty, says RBI deputy governor · 7 hours ago Grid stability, large-scale integration of renewable energy discussed in Parl panel meet · 7 hours ago Sebi bans Rajesh Exports' CMD for fin irregularities · 2 hours ago RBI rejects bids for treasury bills, move signals lower rates · 2 hours ago Interest in India strong despite volatility: Bank of America chief · 2 hours ago Govt sets aside Rs 10k crore to cap jet fuel price, keep air fares in check · 2 hours ago Exporters keep tabs on USTR probe, trade talks · 2 hours ago Tech stocks slide on AI fears, oil gives Dalal Street a headache · 2 hours ago BHEL secures order worth over Rs 2,000 crore from Nigerian firm · 4 hours ago District economy data: Govt issues uniform framework for district GDP estimates with 2022-23 base year · 5 hours ago Rupee slides 40 paise to 95.76 against dollar as tariff concerns, oil prices weigh on sentiment · 6 hours ago India’s 500 GW clean energy goal could create 44 lakh jobs, says study · 6 hours ago India's economy shows resilience amid geopolitical uncertainty, says RBI deputy governor · 7 hours ago Grid stability, large-scale integration of renewable energy discussed in Parl panel meet · 7 hours ago
Thursday, 4 Jun 2026 · IST
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What is marginal cost?

The marginal cost of an additional unit of output is the cost of the additional inputs needed to produce that output. More formally, the marginal cost is the derivative of total production costs with respect to the level of output.

Marginal cost and average cost can differ greatly. For example, suppose it costs $1000 to produce 100 units and $1020 to produce 101 units. The average cost per unit is $10, but the marginal cost of the 101st unit is $20

The Econ Model applications Perfect Competition and Monopoly emphasize the roles of average cost and marginal cost curves. The short movie Derive a Supply Curve (40 seconds) shows an excerpt from the Perfect Competition presentation that derives a supply curve from profit maximizing behavior and a marginal cost curve.

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