How Many Shares Are in 1 Lot? Here Are the IDX Rules and How to Calculate Them
2026-07-23
One lot of shares is equivalent to 100 shares based on the trading unit used on the Indonesia Stock Exchange. Therefore, when the stock price is listed at Rp1,000, the gross capital required to purchase one lot is Rp100,000, excluding transaction fees.
Key Takeaways
- Based on BEI regulations, 1 lot consists of 100 shares.
- The capital to purchase shares is calculated using the formula number of lots × 100 × share price per share.
- The actual payment value may be higher due to transaction fees from the securities company.
How many shares are in 1 lot in Indonesia?
In the Indonesian stock market, one lot consists of 100 shares. This is the standard unit for buying and selling shares on the regular market.
It means:
- 1 lot = 100 shares.
- 2 lots = 200 shares.
- 5 lots = 500 shares.
- 10 lots = 1,000 shares.
- 100 lots = 10,000 shares.
Investors don't just need to look at the price displayed on the securities app. That price is for a single share, not a lot.
For example, a company's stock price is Rp2,000. This price translates to Rp2,000 per share. Since the purchase is made in units of 100 shares, the value of one lot of shares is Rp200,000 before transaction fees.
The 100-share per lot requirement has been in effect since January 2014. Previously, one lot in the Indonesian capital market consisted of 500 shares. This change was made to make transaction values more affordable for retail investors.
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What is meant by a stock lot?
Lot is a standard unit used to determine the number of shares in a transaction.
Using lots helps the trading system process orders uniformly. Investors simply enter the number of lots when placing a buy or sell order, and the system converts this into the number of shares.

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For example, when an investor enters a purchase order for 4 lots, the number of shares ordered is:
4 lots × 100 shares = 400 shares
A lot does not indicate the price or value of a company. It simply indicates the number of shares to be bought or sold.
Two shares can be purchased in the same lot, but the capital requirements can be very different. The difference is determined by the price of each share.
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Formula for Calculating the Price of 1 Lot of Shares
The way to calculate the price of one lot of shares is very simple:
Gross purchase value = Number of lots × 100 × Price per share
To calculate just one lot, the formula is:
Price of 1 lot = 100 × Share price per sheet
The results of this formula do not include the purchase fees charged by the securities company.
Example of Stocks with a Price of Rp. 500
If the price of a stock is IDR 500 per share:
1 lot × 100 × Rp500 = Rp50.000
So, the gross capital to buy 1 lot is IDR 50,000.
Example of Stock with Price of IDR 1,250
If the stock price is listed at IDR 1,250 per share:
1 lot × 100 × Rp1.250 = Rp125.000
Investors need at least IDR 125,000 before taking into account the purchase fee.
Example of Buying 5 Lots of Stocks
An investor wants to buy 5 lots of shares at a price of IDR 750 per share.
The calculation:
5 × 100 × Rp750 = Rp375.000
Thus, the gross purchase value is IDR 375,000.
Example of Buying 20 Lots of Stocks
If the stock price is Rp2,400 and the investor buys 20 lots:
20 × 100 × Rp2.400 = Rp4.800.000
Investors obtained 2,000 shares with a gross transaction value of IDR 4.8 million.
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Is the Capital to Buy Shares the Same as the Lot Calculation Result?
Not always exactly the same.
The product of the number of lots, the number of shares, and the share price is the gross transaction value. Investors are usually still charged a purchase fee based on the securities company's policy.
Costs that may arise include:
- Broker or securities company commission.
- Exchange transaction fees.
- Transaction settlement and guarantee fees.
- Value added tax on related cost components.
The total buy and sell fees can vary for each security. Therefore, investors should check the fee list on the securities company's official website or app.
When selling shares, investors are also subject to a final tax of 0.1% of the gross value of the sale transaction. This tax is calculated on the sale value, not just the profit.
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How to Calculate Share Capital Including Fees
For example, an investor buys 2 lots of shares at a price of IDR 1,500 per share.
Gross transaction value:
2 × 100 × Rp1.500 = Rp300.000
If the securities charge a purchase fee of 0.15%, then:
Fee beli = Rp300.000 × 0,15% = Rp450
Total funds needed:
Rp300.000 + Rp450 = Rp300.450
These percentages are used as calculation examples only. Actual rates should be checked with individual securities firms.
Investors should maintain a balance slightly larger than the gross transaction value. If the balance only equals the stock price, the order may be rejected due to insufficient funds to cover the transaction fee.
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How to Calculate the Number of Lots from the Capital Owned
Investors can also calculate how many lots they can afford to buy based on their capital.
The formula:
Number of lots = Capital ÷ Price of 1 lot
The result must be rounded down because transactions in the regular market are conducted in full lot units.
Example of Capital of IDR 1 Million
An investor has capital of IDR 1 million and wants to buy shares at IDR 2,000 per share.
Price of one lot:
100 × Rp2.000 = Rp200.000
Gross number of lots that can be purchased:
Rp1.000.000 ÷ Rp200.000 = 5 lot
However, purchasing the full 5 lots may result in insufficient funds to cover the fees. Investors can choose 4 lots or add funds to cover the transaction costs.
Example of Capital of IDR 500 Thousand
The desired share price is Rp. 800 per share.
Price of one lot:
100 × Rp800 = Rp80,000
Maximum gross amount:
Rp500.000 ÷ Rp80.000 = 6,25 lot
Since purchases use full lots, investors can only purchase a maximum of 6 lots before taking fees into account.
The value of the 6 lots is:
6 × 100 × Rp800 = Rp480,000
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How to Calculate Profit from 1 Lot of Shares
The profit from a stock price increase is called capital gain. The simple calculation is:
Gross capital gain = Price difference × Number of shares
For example, an investor buys 1 lot at a price of IDR 1,000 and sells it at a price of IDR 1,150.
Price gap:
Rp1.150 − Rp1.000 = Rp150
Gross profit:
Rp150 × 100 = Rp15.000
Net profit will be lower after deducting purchase fees, sales fees, and sales transaction taxes.
If the price falls from Rp1,000 to Rp900, the unrealized loss is:
Rp100 × 100 = Rp10.000 per lot
Seemingly small price changes can have a larger impact as the number of lots held increases.
How to Calculate Dividends Based on the Number of Lots
Dividends are usually declared as a per-share value. To determine the dividend amount received, investors need to multiply the dividend per share by the total number of shares held.
The formula:
Gross dividend = Dividend per share × Number of lots × 100
For example, a company distributes a dividend of Rp75 per share. An investor owns 8 lots, or 800 shares.
The calculation:
Rp75 × 800 = Rp60.000
Investors have the potential to receive a gross dividend of IDR 60,000, as long as they meet the ownership requirements in the dividend distribution schedule.
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Why Do Stocks Use Lot Units?
The use of lots has several important functions.
Standardizing Transaction Sizes
Each buy and sell order uses the same size. The trading system can match orders more orderly.
Simplify Calculations
Investors can calculate the number of shares, capital requirements, profits, losses, and dividends more simply.
Making Stocks More Affordable
The change from 500 to 100 shares per lot lowers the minimum purchase amount. Retail investors can start with less capital.
Assisting Portfolio Management
Lot units make it easier for investors to divide capital into several shares and arrange purchases in stages.
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Are All Stock Prices the Same for 1 Lot?
No. The number of sheets in one lot is always 100, but the price of one lot depends on the share price per sheet.
For example:
- Shares of Rp100 per sheet require Rp10,000 per lot.
- Shares of Rp500 per sheet require Rp50,000 per lot.
- Shares at Rp2,000 per share require Rp200,000 per lot.
- Shares of Rp10,000 per sheet require Rp1,000,000 per lot.
- Shares of Rp50,000 per sheet require Rp5,000,000 per lot.
A low stock price doesn't automatically mean a company is cheap or more attractive. Investors need to consider the company's valuation, financial performance, debt, business prospects, governance, and risks.
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Tips for Buying Stock Lots for Beginners
Don't Spend All Your Balance
Leave funds for transaction fees and future purchasing needs.
Start with a Small Amount
Buying 1–2 lots can help beginners understand price movements and the transaction process without taking on too much risk.
Avoid Choosing Stocks Just Because They Are Cheap
Shares worth Rp100 per share are not necessarily cheaper in terms of valuation than shares worth Rp10,000 per share.
Check Liquidity
Infrequently traded stocks can be more difficult to sell at the desired price.
Learn Company Fundamentals
Examine financial statements, profits, cash flow, debt, industry prospects, and management quality.
Use Cold Funds
Do not use daily needs funds, emergency funds, or funds to pay short-term obligations.
To keep up to date with the latest financial markets, digital assets and economic news, you can register at Bittime and regularly read market updates. Indonesian stock trading continues to be conducted through licensed securities firms.
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Common Mistakes in Calculating Stock Lots
The most common mistake is to consider the price on the application as the price of one lot.
When a stock price appears to be Rp3,000, novice investors sometimes assume it can be purchased for Rp3,000. However, that price is per share.
The value of one lot is:
100 × Rp3.000 = Rp300.000
Other mistakes to avoid include:
- Does not include purchase fees.
- Does not take tax into account when selling.
- Wrong lot number entered.
- Purchase with the entire available balance.
- Ignoring the risk of falling prices.
- Assuming low priced stocks are definitely cheaper.
- Does not check whether the order has been successfully traded.
Before pressing the buy button, double-check the price, number of lots, order value, and remaining balance.
Conclusion
Answers to questions1 lot of shares is 100 shares. This number is a unit of capital trading used on the Indonesia Stock Exchange.
To calculate equity, multiply the number of lots by 100 and the share price per share. For example, one lot of shares priced at Rp2,500 has a gross value of Rp250,000.
Investors also need to set aside funds for transaction costs. When shares are sold, the proceeds are reduced by sales fees and sales transaction taxes.
Understanding the lot concept helps beginners more accurately calculate capital requirements, profits, losses, and dividends. However, the number of lots isn't the only consideration. Always research the company's quality and adjust your purchases based on your risk tolerance.
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FAQ
How many shares are there in 1 lot?
One lot consists of 100 shares based on the IDX trading unit. Therefore, purchasing 10 lots means acquiring 1,000 shares.
How much is 1 lot of shares?
The price of one lot depends on the share price per share. The formula is 100 times the share price.
Is it possible to buy just 1 share?
Stock transactions on the regular market use lots, which are 100 shares or multiples thereof. Normal purchase orders placed through securities applications are entered in lots.
How much capital is needed to buy 1 lot of shares?
The capital depends on the share price. If the price per share is Rp1,000, the gross value of one lot is Rp100,000, excluding purchase fees.
Does the value of 1 lot include transaction fees?
Not yet. The value of one lot is derived from the share price multiplied by 100 shares, with transaction fees added according to the securities rate.
Disclaimer: The views expressed belong exclusively to the author and do not reflect the views of this platform. This platform and its affiliates disclaim any responsibility for the accuracy or suitability of the information provided. It is for informational purposes only and not intended as financial or investment advice.



