Can a Zero-Commission Platform Still Charge Fees? Understanding the Real Cost of Trading

Zero-commission platforms have lowered the barrier to investing, but “zero commission” does not mean “zero cost.” When you trade U.S. stocks, Hong Kong stocks, ETFs, fractional shares, or assets across different currencies, you may still encounter platform fees, regulatory fees, trading activity fees, settlement fees, FX costs, bid-ask spreads, and execution differences. What matters is not only the commission shown on a promotional page, but the total cost across order placement, execution, currency conversion, clearing, settlement, and account statements. This is especially important for small orders, frequent trading, and cross-market investing.

Key Takeaways

• Zero commission usually means the trading commission is waived, not that all costs disappear.
• Real trading costs include both visible charges and hidden costs such as spreads and execution differences.
• Small orders are more sensitive to minimum charges, platform fees, and fractional-share rules.
• Frequent trading can amplify the impact of bid-ask spreads, order types, and financing costs.
• To judge whether a platform is cost-effective, review its fee schedule, order confirmation, and account statement.
• Transparent pricing and clear rules matter more than a simple low-fee slogan.

Why Can a Zero-Commission Platform Still Charge Trading Fees?

A zero-commission platform may still charge fees because “commission” is only one part of trading costs. When you see zero commission, it usually means the platform no longer charges a traditional trading commission based on order value or a fixed amount per trade. However, a trade still passes through exchanges, clearing institutions, regulators, market makers, brokerage systems, and sometimes cross-currency funding channels. As long as these layers exist, platform fees, regulatory fees, trading activity fees, clearing fees, FX spreads, and execution costs may still exist.

Zero Commission Usually Only Waives the “Commission” Item

In a traditional brokerage fee structure, commission is the most visible charge. In the past, buying or selling stocks could involve a fixed fee per trade, a percentage of the transaction amount, or a combination of both. When zero-commission pricing became common, many investors naturally interpreted it as “trading stocks for free.” A more accurate interpretation is this: the platform sets the commission item to zero, but other fees may still apply depending on the platform’s pricing schedule and order details.

FINRA explains trading fees and commissions as costs related to buying and selling securities, including commissions, markups, markdowns, and sales charges. In other words, commission is one type of trading cost, not the whole cost.

Common cost items can be grouped as follows:

Brokers, Exchanges, Regulators, and Clearing Institutions May Each Involve Costs

A stock trade is not simply “you buy, the platform matches, and the trade is done.” In public markets, a trade usually involves order submission, routing, execution, clearing, settlement, and regulatory reporting. Rules differ by market, and platforms differ in whether they pass certain costs on to users.

For example, selling U.S. stocks may involve regulatory transaction fees or trading activity fees. In its fiscal year 2026 fee rate advisory, the SEC stated that, starting April 4, 2026, the Section 31 transaction fee rate for most securities transactions would be $20.60 per million dollars. FINRA also charges a Trading Activity Fee to member firms to help fund its regulatory responsibilities. When shown to end users, these may appear as regulatory fees, trading activity fees, or external institution fees.

These fees are usually small, but they highlight an important point: zero commission does not mean the trading chain has no cost. It only means the platform may not charge the traditional commission item.

Free Trading May Still Involve Platform Fees, Spreads, and Execution Costs

Zero-commission platforms do not all use the same business model. Some charge platform fees to cover system and service costs. Others earn revenue through interest income, margin lending, securities lending, currency exchange, paid features, or order-flow-related arrangements. For ordinary investors, the key question is not whether one model is always good or bad, but whether it is transparent, verifiable, and unlikely to harm execution quality.

In 2020, the U.S. SEC announced an enforcement action against Robinhood Financial, stating that the firm failed to fully disclose its receipt of payment for order flow from trading firms and made statements relating to execution quality. The case shows that even when commission is zero, users should still care about order routing and execution quality. This is especially relevant for short-term trading, less liquid stocks, extended-hours trading, and volatile market conditions.

You can understand zero commission through a simple framework:

• Commission is zero: the platform does not charge a traditional trading commission.
• Fees are not necessarily zero: platform fees, regulatory fees, settlement fees, and FX fees may still apply.
• Costs are not zero: spreads, slippage, and execution differences may not appear as separate fee items.
• Risk is not zero: trading frequency, product complexity, and funding routes all affect the final outcome.

Summary: A zero-commission platform reduces the commission item, not the entire trading cost chain. What you really need to examine is the full cost structure from order placement to execution, currency conversion, clearing, and settlement. Commissions, platform fees, regulatory fees, and trading activity fees are visible costs that usually appear in fee schedules or statements. Spreads, slippage, execution quality, and FX differences are hidden costs that may not be listed as a separate line item but still affect your execution price and cash balance. To judge whether a platform is truly cost-effective, do not stop at the phrase “zero commission.” Review whether the fee rules are complete, whether the order confirmation page is clear, whether the trade statement can be reconciled, and whether your order size, trading frequency, and product type fit that pricing model.

What Parts Make Up the Real Cost of Trading?

The real cost of trading should be viewed in three layers: visible fees, hidden costs, and funding costs. Visible fees are items you can see on your statement, such as commissions, platform fees, regulatory fees, trading activity fees, and settlement fees. Hidden costs mainly come from bid-ask spreads, execution prices, and order execution quality. Funding costs include FX spreads, cross-border transfer fees, margin interest, and interest differences on idle cash. Looking only at commission can lead you to underestimate the real cost.

Visible Fees: Charges You Can See on Your Statement

Visible fees are the easiest to understand because they are usually shown in the fee schedule, order confirmation page, or trade statement. After you buy or sell, you may see specific amounts deducted from your account. Naming conventions vary by platform, but common items include commissions, platform fees, external institution fees, regulatory fees, trading activity fees, clearing fees, settlement fees, and exchange fees.

The SEC’s investor education materials remind investors that investment products and services often involve fees, and even seemingly small fees and expenses can affect portfolio outcomes over time. The same logic applies to stock trading. A fee may look small in absolute terms, but when trading frequency is high, order size is small, or holding period is short, the fee can become more significant relative to your investment result.

Visible fee checklist:

Hidden Costs: Spreads, Execution Price, and Order Execution Quality

Hidden costs may not appear as “fees,” but they change your actual buying or selling price. The most typical example is the bid-ask spread. In its ETF investor bulletin, Investor.gov explains that securities markets usually have both a bid price and an ask price, and the difference between them is the bid-ask spread. If you use a market order to buy, you are generally more likely to execute near the ask price. If you sell, you are generally more likely to execute near the bid price. That difference is the cost of market liquidity.

For example, suppose a stock has a bid price of $100.00 and an ask price of $100.06. If you place a market order to buy 100 shares, you may execute near $100.06. If you immediately sell, you may execute near $100.00. Even if the commission is zero, the spread could create about $6 of market friction. For highly liquid large-cap stocks, spreads may be narrow. For less liquid stocks, extended-hours trading, or volatile periods, spreads can widen significantly.

Hidden costs mainly depend on these factors:

• Whether the bid-ask spread is stable or widens significantly during extended hours.
• Whether the market order execution price deviates meaningfully from the quote you saw.
• Whether a limit order can execute, and whether an overly strict limit causes you to miss the trade.
• Whether the platform discloses order routing and execution quality information.
• Whether the same stock has enough market depth across different trading sessions.

Cross-Market Trading Also Requires FX and Funding Cost Analysis

If you invest in U.S. or Hong Kong stocks using a different base currency, trading costs extend to currency conversion and funding routes. FX costs usually include explicit handling fees and exchange rate spreads. Even if a platform advertises “no FX handling fee,” you still need to compare the actual executed exchange rate with a reasonable market reference rate. For long-term investors, occasional conversion may have limited impact. For users who frequently move between currencies, trade short term, or switch across markets, FX costs can become an important part of total cost.

Funding routes also include remittance fees, settlement time, deposit and withdrawal restrictions, and intermediary bank charges. Whether you convert currency before funding the account or fund first and convert later may lead to different final costs. Instead of asking only “which platform has the lowest commission,” it is more practical to map the full path: funding the account, executing the trade, selling the position, and withdrawing the funds.

You can break down real cost this way:

Summary: Real trading cost is not one single number but the sum of multiple cost layers. Visible fees determine how much is directly deducted from your account. Hidden costs determine whether you execute at a favorable price. Funding costs determine whether cross-currency trading and cash movement are efficient. Zero commission only means the commission item is zero; it does not automatically remove platform fees, regulatory fees, spreads, FX differences, or margin interest. For ordinary investors, the most practical approach is to check the fee schedule and estimated costs before placing an order, review the statement and execution price after the trade, and periodically calculate total costs as a percentage of trading volume. Only by combining fees, price, and funding path can you judge whether a platform’s real trading cost suits your needs.

Why Are Small Investors More Sensitive to Fees Beyond Zero Commission?

Small investors are more sensitive to fees beyond zero commission because fixed minimum charges and platform fees can raise the effective cost ratio of each order. For a large order, $0.99 or a few cents of regulatory fees may not seem significant. But for a $50, $100, or $200 order, the same fixed charge becomes a much higher percentage of the trade. Fractional shares, recurring investments, and frequent partial buys all require special attention to minimum charges and fee caps.

Minimum Charges Can Raise the Effective Cost of Small Orders

Many platforms do not charge purely by percentage. Instead, they may set a minimum charge per order. A minimum charge helps cover the platform’s basic order-processing cost, but for small investors, it can significantly increase the effective fee rate.

Suppose a platform charges a platform fee of $0.005 per share, with a minimum of $0.99 per order. If you buy 10 shares, the per-share calculation would only be $0.05, but because of the minimum charge, the actual fee may be $0.99. If your order size is $100, $0.99 equals about 0.99%. If your order size is $1,000, $0.99 equals about 0.099%. The same minimum charge affects different order sizes very differently.

This is why many long-term investors avoid excessive order splitting. It does not mean small recurring investments are unsuitable. It means you need to understand the relationship between order size and per-order cost. If you buy very small amounts every week, it may be worth comparing the cost of buying weekly versus consolidating into a monthly order.

Fractional Shares May Use Different Fee Rules

Fractional shares allow investors to buy high-priced stocks with smaller amounts of capital, but fractional-share fee rules are not always the same as whole-share rules. Some platforms do not charge traditional commissions on fractional shares. Others charge a fixed percentage of the trade amount. Some use different rules for orders below one share and non-integer orders above one share. Therefore, when trading fractional shares, you should not only ask whether fractional trading is available, but also how it is charged.

Using Biya’s U.S. stock fee structure as an example, Biya charges $0 commission for U.S. stock trading, a platform fee of $0.005 per share, with a minimum of $0.99 per order and a maximum of 1% of trade value. External institution fees and trading activity fees are $0.00396 per share. Its U.S. stock trading fees also state that fractional-share orders with executed quantity below one share are charged only a platform fee equal to 1% of the total transaction amount, capped at $1. Platform fees, external institution fees, and other charges are subject to the fee center and order page shown at the time of trading.

This kind of rule is important for small investors. If you buy only 0.2 shares, the fee logic may no longer follow the ordinary whole-share structure. If you buy 1.5 shares, the platform may apply regular order rules or another set of non-integer share rules. The actual rule should always follow the platform’s displayed order details.

Recurring Investments and Split Orders Require Cost-Ratio Awareness

Recurring investments and split purchases can reduce timing pressure, but if each order is too small, the cost ratio may rise. You need to balance “spreading out entry timing” with “controlling per-order cost.”

Small investors should focus on:

• Whether the platform has a minimum charge per order.
• Whether fractional-share orders follow different fee rules from whole-share orders.
• Whether recurring investment frequency is too high and raises the cost ratio.
• Whether sell-side regulatory fees or trading activity fees apply.
• Whether FX costs are amplified by frequent currency conversion.

For small investors, a simple formula can help evaluate platform cost:

Summary: Small investors are not unsuitable for zero-commission platforms. In fact, zero commission lowers the initial barrier to participation. However, small orders are more sensitive to minimum charges, fractional-share rules, regulatory fees, and FX costs. The key question is not only whether there is a commission, but what percentage each trade’s total cost represents relative to the order amount. If the order size is too small, fixed minimum charges can significantly raise the effective fee rate. If trading frequency is too high, spreads and sell-side costs can also accumulate. A more practical approach is to control order-splitting frequency without changing your investment discipline, understand fractional-share pricing rules, and reconcile your statement after execution. This helps avoid misunderstanding real costs simply because the commission item is zero.

How Does Zero Commission Affect Cost Analysis for Frequent Trading?

For frequent trading, zero commission can make every order feel easier to place, but it can also make hidden costs easier to underestimate. The more often you trade, the more bid-ask spreads, slippage, execution differences, extended-hours liquidity, margin interest, and product-specific fees can accumulate. For short-term traders, zero commission lowers the visible threshold per trade, but it does not remove market friction.

More Trades Mean Spreads and Execution Differences Accumulate More Easily

If you hold a highly liquid large-cap stock for the long term, the spread may only matter at the time of purchase and sale. But if you trade multiple times a day, the spread appears repeatedly. Many investors underestimate this because the spread is not deducted like a commission. It is embedded in the execution price.

For example, suppose a stock has an average bid-ask spread of $0.03. If you trade 200 shares each time and cross the spread on both entry and exit, one round trip may involve several dollars of market friction. One trade may not seem significant, but after 50 or 100 trades, the difference becomes meaningful. When the SEC updated Rule 605 order execution quality disclosure in 2024, it emphasized that the rule helps the public compare and evaluate execution quality across market centers. This shows that execution quality itself is part of trading cost analysis.

Frequent traders should especially watch:

Market Orders, Limit Orders, and Extended-Hours Trading Have Different Cost Profiles

A market order prioritizes execution speed but does not guarantee price. A limit order controls price but does not guarantee execution. For long-term investors, the difference may not be dramatic. For frequent traders, order type directly affects real cost.

During regular market hours with sufficient liquidity, market orders can usually execute quickly. However, during major news events, earnings releases, popular IPO debuts, or extreme volatility, the execution price may differ meaningfully from the quote you saw. Extended-hours trading usually has lower liquidity than regular trading hours, wider spreads, and possible order-type restrictions.

Order types can be understood this way:

• Market order: prioritizes execution and may suit liquid stocks with narrow spreads, but price is uncertain.
• Limit order: prioritizes price control and may suit volatile or wide-spread situations, but execution is not guaranteed.
• Stop order: can help manage risk, but once triggered, execution may occur at an unfavorable price.
• Extended-hours order: requires special attention to liquidity, spreads, and platform-specific rules.

If you trade short term, zero commission may reduce the psychological barrier to clicking “trade,” but it does not reduce market volatility. The more frequently you trade, the more important it becomes to include execution quality in your cost analysis.

Margin, Options, and Leveraged Products Should Not Be Judged Only by Stock Commission

Many platforms advertise zero commission for stocks, but margin trading, options, derivatives, and special order types may have entirely different pricing structures. Margin trading requires attention to interest rates. Options trading involves contract fees, regulatory fees, exchange fees, and bid-ask spreads. Leveraged products also involve margin calls, overnight costs, and volatility decay.

These products should not be evaluated only by asking whether stock commissions are zero. You need to examine the risk structure of the product itself:

The SEC’s explanation of Rule 606 order routing disclosure shows that brokers must disclose certain order routing information. Ordinary users may not review these reports in detail, but they should understand that where an order is routed, how it is executed, and whether order-flow-related revenue exists may affect a platform’s business model and trading experience.

Summary: For frequent trading, zero commission can cause investors to underestimate trading friction. A zero commission does reduce direct charges per trade, but bid-ask spreads, slippage, execution quality, extended-hours liquidity, and margin interest still exist. The more often you trade, the more these small differences can turn into real costs. For short-term traders, the focus should not be only on finding a low-commission platform. It should also include using limit orders appropriately, avoiding illiquid trading sessions, reviewing execution prices, and understanding product-level costs. Zero commission may lower the entry barrier, but it should not be the only reason to increase trading frequency. Every trade should have clear price boundaries, risk boundaries, and cost expectations.

How Can You Decide Whether a Zero-Commission Platform Is Right for You?

To decide whether a zero-commission platform is right for you, look at four factors: fee transparency, statement clarity, product fit, and funding path. A lower commission does not necessarily mean a lower total cost. If platform fees, FX costs, spreads, withdrawal costs, margin rates, or funding rules are unclear, it is difficult to judge the real cost. A suitable platform should let you estimate costs before placing an order and reconcile fees after execution.

Review the Fee Schedule First, Not Just the Promotional Page

Promotional pages usually highlight the most attractive features, such as zero commission, low entry thresholds, fractional shares, or easy trading. But the full fee schedule determines the real cost. You should check how the platform charges for stocks, ETFs, options, Hong Kong stocks, U.S. stocks, fractional shares, margin, FX, deposits, and withdrawals. Do not assume “zero commission on stocks” means every product is low-cost.

Before opening an account, check in this order:

1. Review commissions, platform fees, and minimum charges for stocks and ETFs.
2. Review sell-side regulatory fees, trading activity fees, and settlement fees.
3. Check whether fractional-share orders have separate rules.
4. Review FX, remittance, withdrawal, and margin interest costs.
5. Check whether fees vary by market, product, or account tier.

If a platform highlights “zero commission” but makes its complete fee schedule hard to find, you should be cautious. Low fees are not the problem; unclear fees are.

Then Review the Statement and Trade Confirmation

After a trade, the most useful things to review are not only account profit and loss, but also the trade confirmation and fee breakdown. The trade confirmation shows executed quantity, execution price, execution time, and order type. The fee breakdown shows commissions, platform fees, regulatory fees, external institution fees, and other charges. Only by combining the two can you understand where your cost came from.

You can build a simple review table:

If you repeatedly find that execution prices are unfavorable or fee items are difficult to explain, you should reassess whether the platform fits your trading style, even if the commission is zero.

Finally, Match the Platform to Your Trading Frequency, Order Size, and Product Type

Different investors need different things from a platform. Long-term investors often care more about asset security, product coverage, fee transparency, and stability. Small recurring investors care more about minimum charges, fractional-share rules, and FX costs. Short-term traders care more about quote speed, order execution, spreads, and trading hours. Options or margin users must additionally consider complex product fees and risk controls.

You can use the following decision table as a starting point:

Whether a platform is suitable is not determined by a single number. It depends on your trading behavior. A platform may be well suited for small U.S. stock purchases but less suitable for high-frequency short-term trading. Another platform may work well for long-term ETF holding but not for complex options strategies. Before increasing trade size, it is often better to test the full workflow with a small order first.

Account security and compliance boundaries should also not be ignored. Investor.gov’s explanation of SIPC notes that SIPC does not protect investors against losses caused by declines in the market value of securities. In other words, platform compliance, asset protection, and investment gains or losses are separate issues. Service availability also depends on the user’s location, identity verification result, platform rules, and applicable laws and regulations.

Summary: To judge whether a zero-commission platform is right for you, do not only ask whether the commission is zero. Ask whether the total cost is understandable, predictable, and verifiable. The most practical three-step process is to review the fee schedule before opening an account, check the order confirmation before trading, and reconcile the statement after execution. Small investors should focus on minimum charges and fractional-share rules. Frequent traders should focus on spreads and execution quality. Cross-market users should focus on FX and funding routes. Users of complex products should focus on margin rates, contract fees, and risk controls. The right platform is not necessarily the one with the lowest single fee item, but the one with clear pricing, stable rules, and a trading experience that matches your needs.

Using Biya as an Example: How to Read U.S. Stock Trading Costs Through the Fee Center

Using Biya as an example, the key to understanding U.S. stock trading costs is to separate “zero commission” from “other fees.” Biya charges $0 commission for U.S. stock trading, but users should still review platform fees, external institution fees, trading activity fees, and fractional-share rules. Before placing an order, you can review the fee center and order page. After execution, you can check the statement to compare estimated fees with actual charges.

Under Zero Commission, Platform Fees and External Institution Fees Still Matter

Biya is a global multi-asset trading wallet that supports U.S. stocks, Hong Kong stocks, and digital asset trading, as well as conversion services between major fiat currencies and digital assets. For users focused on U.S. stock trading costs, the key is not only to see that commission is zero, but also to check platform fees and external institution fees.

Biya charges $0 commission for U.S. stock trading. Its platform fee is $0.005 per share, with a minimum of $0.99 per order and a maximum of 1% of trade value. External institution fees and trading activity fees are $0.00396 per share. When comparing zero-commission platforms, you can break Biya costs into several dimensions: commission, platform fee, external institution fee, trading activity fee, and fractional-share rules. Platform fees, external institution fees, and other charges are subject to the fee center and order page displayed at the time of trading.

Fractional-Share Orders and Whole-Share Orders May Use Different Fee Logic

If you use a small amount of capital to buy high-priced U.S. stocks, fractional-share rules matter. Biya’s fee center states that fractional-share orders with executed quantity below one share are charged only a platform fee equal to 1% of the total transaction amount, capped at $1. This means that if you buy less than one share, you should not simply apply the ordinary whole-share platform fee calculation.

This is especially important for new investors. Many people begin U.S. stock investing by buying small amounts of high-priced stocks or ETFs. If you do not distinguish between whole-share orders and fractional-share orders, the statement may look confusing. A more reliable approach is to review estimated fees on the order page before placing the trade, then check after execution whether the executed quantity was below one share and whether the statement applied the fractional-share rule.

Cross-Check the Order Page, Fee Center, and Statement

When using any trading platform, it is useful to develop the habit of estimating before trading and reconciling after execution. For a multi-asset platform such as Biya, if you follow U.S. stocks, Hong Kong stocks, digital assets, or FX services at the same time, you should separate the fee structures of different products. Do not mix maker fees for digital asset trading, platform fees for stock trading, FX spreads, and deposit or withdrawal costs into a single comparison.

You can review costs in this sequence:

1. Confirm the market: U.S. stocks, Hong Kong stocks, or another asset type.
2. Confirm the order type: whole share, fractional share, market order, or limit order.
3. Review the fee center and order confirmation page before placing the order.
4. After execution, check executed quantity, execution price, and actual fees.
5. If currency conversion is involved, separately review the actual exchange rate and cash ledger.

If you are researching stocks and trading costs, you can use the U.S. stock search tool to review stock information, then combine it with the fee rules to evaluate whether your order size and trading frequency are appropriate. If you prefer using a mobile app, you can download Biya, but before trading, you should still follow the actual account display, identity verification result, service availability, and applicable local regulations.

Summary: Using Biya as an example, the right way to evaluate a zero-commission platform is to acknowledge that the commission is indeed zero, and then continue breaking down platform fees, external institution fees, trading activity fees, and fractional-share rules. Biya charges $0 commission for U.S. stock trading, but ordinary orders still involve platform fees and external institution-related costs. Fractional-share orders below one share have a separate fee structure. For users, the most important thing is not to remember only one promotional number, but to compare the fee center, order page, and trade statement together. This helps you understand what zero commission really means and avoid cost misjudgments in small orders, fractional-share orders, or cross-currency transactions. Service availability depends on the user’s location, identity verification result, platform rules, and applicable laws and regulations.

If you are comparing zero-commission platforms, it is better to evaluate trading opportunities and trading costs together. A zero commission can lower the barrier to participation, but platform fees, regulatory fees, trading activity fees, spreads, FX costs, and funding costs can still affect the real trading experience. Biya may be worth reviewing for users who want to explore multi-asset trading, fiat conversion, and U.S. or Hong Kong stock opportunities within one account. Before trading, confirm whether the service is available based on your location and account status, and review the fee center, order confirmation page, and trade statement. The information above explains public market information, trading rules, and fee structures only, and does not constitute investment advice.

FAQ

Is a zero-commission platform completely free?

A zero-commission platform is not necessarily completely free. Zero commission usually means the platform does not charge a traditional trading commission, but platform fees, regulatory fees, trading activity fees, FX costs, spreads, and margin interest may still apply. Costs should be checked against the platform’s fee schedule, order confirmation, and trade statement.

How can ordinary investors identify hidden costs in U.S. stock trading?

Ordinary investors can identify hidden U.S. stock trading costs by reviewing bid-ask spreads, execution prices, and order types. Market orders, extended-hours trading, and low-liquidity stocks are more likely to create price differences. After execution, compare the trade price with market quotes at the time of order placement.

Is a zero-commission platform always cheaper for small U.S. stock orders?

A zero-commission platform is not always cheaper for small U.S. stock orders. If the platform has minimum charges, fractional-share platform fees, or FX spreads, the cost as a percentage of the order amount may still be high. Small investors should compare per-order cost ratios and avoid excessive order splitting.

Why should frequent traders care about bid-ask spreads?

Frequent traders should care about bid-ask spreads because spreads appear repeatedly with each buy and sell. Even when commission is zero, buying near the ask price and selling near the bid price creates market friction. The more frequently you trade, the more spreads and slippage can affect results.

Are fractional-share trading fees the same as whole-share trading fees?

Fractional-share trading fees are not always the same as whole-share trading fees. Some platforms apply separate pricing rules to orders below one share, which may involve percentage-based fees or fee caps. Before placing an order, check the executed share quantity, order type, and fractional-share fee rules.

What rules should investors check before choosing a zero-commission platform?

Before choosing a zero-commission platform, investors should check commissions, platform fees, minimum charges, sell-side regulatory fees, fractional-share rules, FX fees, and deposit or withdrawal restrictions. They should also confirm service availability, identity verification requirements, and product risks. Fees and account rules should follow the platform’s real-time display.