Regulatory Trading Fees: SEC and FINRA Charges

The SEC and FINRA regulatory trading fees are small charges levied on every equity trade and passed directly to the trader. The Section 31 fee (charged by the SEC) applies to stock sales; the FINRA transaction activity fee applies to both sales and options. Though individually tiny, these fees compound significantly for active traders and are disclosed on every trade confirmation.

The SEC Section 31 Fee on Stock Sales

The SEC charges a fee on the sale of publicly traded equity securities. This fee finances the Securities and Exchange Commission’s operations and is codified in Section 31 of the Securities Exchange Act of 1934.

The Section 31 fee is calculated as a fixed fraction of sale proceeds, not per share. Currently, it stands at approximately 0.0000021 of the gross dollar amount of the sale.

Example calculation:

• You sell 1,000 shares at $100 per share.
• Gross proceeds: $100,000.
• Section 31 fee: $100,000 × 0.0000021 = $0.21.

The fee is microscopic on a single trade but compounds for high-volume traders. Someone executing 100 similar trades per day would incur roughly $21 in Section 31 fees daily—nearly $5,300 per trading year.

Key characteristics of Section 31:

• Sales only: The fee applies only to sales (short sales included), not purchases.
• Adjusted annually: The SEC changes the rate quarterly based on market conditions to keep total SEC revenues stable.
• Applies to all venues: Whether you sell on the NYSE, NASDAQ, or an alternative trading system, you pay the fee.

The FINRA Transaction Activity Fee

FINRA, the self-regulatory organization overseeing brokers, charges a separate transaction activity fee on sales of equity securities and all options transactions (both purchases and sales).

The FINRA transaction activity fee is per-share (for equities) or per-contract (for options):

• Equities: ~0.000119 per share on sales.
• Options: A fixed amount per contract, typically $0.002 to $0.01 depending on the contract size.

Example calculation:

• You sell 1,000 shares at $100 per share.
• FINRA fee: 1,000 shares × $0.000119 = $0.119 ≈ $0.12.

Like the SEC fee, this rate is minuscule per trade but material across thousands of transactions. A day trader executing 50 round-trips (100 sales) of 500 shares each incurs:

• 50,000 shares × $0.000119 = $5.95 daily.

Over a 250-trading-day year, that is roughly $1,500 in FINRA fees alone.

Why These Fees Exist

Both the SEC and FINRA fund their regulatory operations through trading fees rather than direct budget allocation. The principle is that those who benefit from regulated markets (and create the need for oversight) should bear the cost.

The SEC uses these revenues to:

• Fund enforcement actions against illegal trading.
• Maintain disclosure standards and market surveillance.
• Support the public securities database.

FINRA uses its fee revenue to:

• Fund surveillance of trading for manipulation, insider trading, and other violations.
• Support member compliance and continuing education.
• Administer its disciplinary processes.

These are genuine costs of market infrastructure, not pure profit extraction.

Combined Cost Per Trade

For a typical stock sale, both fees combine:

Example: Selling 1,000 shares at $50 per share

• Gross proceeds: $50,000
• Section 31 fee: $50,000 × 0.0000021 = $0.105
• FINRA fee: 1,000 × $0.000119 = $0.119
• Total regulatory fees: $0.224 per trade

In percentage terms, this is $0.224 / $50,000 = 0.00045%, or 0.45 basis points—imperceptible to a buy-and-hold investor but meaningful to a day trader or high-frequency algo.

Options and Other Instruments

FINRA applies a flat per-contract fee to options that is larger in nominal terms but still small:

• A single options contract (100 shares) might incur $0.002 to $0.01 in FINRA fees.
• Multiply by hundreds of contracts per day, and the cost becomes visible.

SEC Section 31 applies only to equity sales, not options. Options traders pay only the FINRA fee.

Disclosure and Avoiding Hidden Costs

Brokers are required to disclose all regulatory fees on trade confirmations and in monthly statements. They typically appear as a separate line item labeled “SEC Fee” or “FINRA Fee” or bundled under “Other Charges.”

Some brokers absorb small regulatory fees into their spreads or commission structures rather than itemizing them. This is legal but less transparent. A trader choosing between brokers should compare all fees—commissions, spreads, AND regulatory charges—on a representative trade.

The Impact on Strategy

For most retail investors, regulatory fees are negligible. A quarterly rebalance of a $100,000 portfolio incurs perhaps $1–2 in total regulatory costs.

For active traders, the picture is different:

• Scalpers trading 10,000+ shares per day face $1–2 in regulatory fees alone per day.
• Systematic traders running algos must account for these fees in backtests and break-even calculations.
• Options market-makers face a per-contract fee that eats into bid-ask spreads.

Some hedge funds and trading firms factor regulatory fees into their order sizing and profit targets. A strategy that clears only 5 basis points per trade must cover commissions, spreads, AND regulatory fees to be viable.

See also