All Major Commodities: Lot Size and Estimated Margin Required

Commodity margin is the amount of funds a trader needs to maintain with a broker to take a position in a commodity futures contract.

A futures contract represents a specific quantity of the underlying commodity. This quantity is known as the lot size. Instead of paying the entire value represented by that lot, a trader deposits a specified amount as margin.

For example, the September 2026 Aluminium Mini contract has a lot size of 1 MT and an NRML margin of ₹32,355. The standard Aluminium contract, on the other hand, has a lot size of 5 MT and requires an NRML margin of ₹1,61,725.

This shows why lot size matters. A larger lot generally represents higher market exposure and can require more capital.

What is NRML Margin?

It represents the amount that needs to be available to establish the position under the applicable normal margin requirements.

The margin is not the same as the total value of the futures contract.

For example, September 2026 Gold contract has a lot size of 1 kg and an NRML margin of ₹14,09,702. The contract therefore requires substantially less capital as margin than the full underlying exposure represented by the lot.

The NRML margin rate also differs between commodities. In the supplied data, Crude Oil has a 31.25% margin rate, while Lead has a 7.35% rate for the September 2026 contract.

Therefore, traders should look at both the absolute margin amount and the margin rate when comparing commodity contracts.

Major Commodities, Lot Sizes and Estimated NRML Margins

The following sections cover all the commodities and commodity-related contracts contained in the supplied data.

Precious Metals

Precious metals form one of the largest groups in the commodity market, with Gold and Silver available in standard as well as smaller contract sizes.

Gold has contracts ranging from 1 gram through 1 kg, while Silver is available in standard, Mini, Micro and 100-gram contracts. The smaller contracts can reduce the absolute margin requirement compared with the standard contracts.

*price last update 3rd september 2026

Base Metals

Base metals include Aluminium, Copper, Lead, Nickel and Zinc. The lot sizes range from 250 kg for Nickel to 5 MT for several standard metal contracts.

Copper has the highest absolute margin among the base-metal contracts listed below, at ₹3,17,842 for the September 2026 contract

*price last update 3rd september 2026

Energy Commodities

The energy contracts in the supplied data include Crude Oil, Crude Oil Mini, Natural Gas and Natural Gas Mini.

Crude Oil stands out for its high NRML margin rate of 31.25% in the supplied contracts. Its standard contract requires ₹2,68,751 in margin, compared with ₹26,864 for Crude Oil Mini.

*price last update 3rd september 2026

Agricultural Commodities

The agricultural contracts in the supplied data include Cotton, Cotton Oil, Kapas and Mentha Oil. Unlike metals and energy contracts, their lot sizes are specified in bales, metric tonnes or kilograms depending on the commodity.

*price last update 3rd september 2026

Steel and Electricity Contracts

The supplied data also contains Steel Rebar and Electricity contracts. Electricity contract has different margin rates across expiry months. September 2026 contract has a 15.10% NRML margin rate, while October and November contracts show 12.41% and 13.90%, respectively.

*price last update 3rd september 2026

Commodity Indices

The supplied data also includes two commodity index contracts: MCX Bulldex and MCX Metldex. These are index-based contracts rather than futures contracts on an individual commodity.

*price last update 3rd september 2026

READ MORE: Types of Mutual Funds

How Does the Commodity Margin Calculation Work?

The margin requirement is linked to 3 main factors:

• Commodity price
• Contract lot size
• NRML margin rate

The basic calculation is:

Margin Required = Price × Lot Size × NRML Margin Rate

For example, consider the September 2026 Aluminium Mini contract. The supplied data shows a lot size of 1 MT, an NRML margin rate of 9.29% and an NRML margin of ₹32,355.

The calculation can be understood as:

Contract Value × NRML Margin Rate = Margin Required

The same principle applies across commodity futures, although the price unit and lot-size unit differ from one commodity to another.

A trader can also estimate how many lots can be taken based on available capital:

Number of Lots = Available Capital ÷ Margin Required per Lot

For instance, if a trader has ₹1,00,000 and one contract requires ₹32,355 as margin, the mathematical result would be approximately 3.09 lots. Since futures contracts cannot be traded in fractional lots, the trader could take up to three lots based purely on the margin calculation.

However, using all available capital as margin is not necessarily prudent. Traders also need sufficient funds to absorb mark-to-market losses and other applicable charges.

Which Commodity Contracts Require the Most Margin?

The amount of capital required can vary across commodity contracts. Among the contracts covered above, the standard Gold contract requires approximately ₹14.10 Lakh in NRML margin, while standard Silver requires about ₹8.80 Lakh. Copper requires ₹3.18 Lakh, followed by Crude Oil at about ₹2.69 Lakh.

Conclusion

Commodity margin tells traders how much capital is required to take a futures position, while the lot size shows how much of the underlying commodity one contract represents.

The requirements vary widely across MCX contracts, with smaller contracts generally requiring less absolute margin than their standard counterparts.