MiFID II is the European Union's core framework for investment services and financial markets. Set out in Directive 2014/65/EU and applied since 3 January 2018, it works alongside the Markets in Financial Instruments Regulation (MiFIR, Regulation (EU) 600/2014). Together they aim to make EU financial markets more robust and transparent and to strengthen investor protection.
The directive governs how investment firms provide services and how trading venues operate. It expands the rules to cover more instruments and activities, introduces a new category of trading venue (the organised trading facility), tightens conduct-of-business and product-governance standards, and broadens pre- and post-trade transparency and transaction-reporting obligations. National authorities and the European Securities and Markets Authority (ESMA) supervise and provide detailed guidance.
What is MiFID II and how does it relate to MiFIR?
MiFID II is Directive 2014/65/EU of the European Parliament and of the Council. It is paired with MiFIR (Regulation (EU) 600/2014), which together form a single framework for investment services and securities markets in the EU.
- The directive (MiFID II) covers authorisation and organisation of investment firms, conduct of business, investor protection and trading venues; it is transposed into each Member State's national law.
- The regulation (MiFIR) is directly applicable and covers transparency to the public, transaction reporting to regulators, and the trading of derivatives on organised venues.
Both instruments were adopted in 2014 and became applicable on 3 January 2018.
Who and what does MiFID II cover?
MiFID II applies to investment firms, market operators, and trading venues providing or operating investment services and activities in the EU.
It recognises three categories of trading venue:
- Regulated markets
- Multilateral trading facilities (MTFs)
- Organised trading facilities (OTFs) — a new venue type introduced to bring previously unregulated trading (notably in non-equity instruments) into scope.
Operators of MTFs and OTFs must establish transparent rules and procedures for fair and orderly trading and objective criteria for the efficient execution of orders. The framework also introduced rules for algorithmic and high-frequency trading and strengthened oversight of commodity-derivatives markets.
What investor-protection rules apply?
Investment firms must act in the best interests of their clients. Key obligations include:
- Suitability — when giving investment advice or portfolio management, firms must assess whether a product is suitable for the client, including the costs and benefits of switching investments, and provide a suitability report before the transaction is concluded.
- Appropriateness — for non-advised services in more complex products, firms must assess whether the client understands the risks involved.
- Product governance — manufacturers and distributors must define a target market for each product and ensure products are designed and offered to meet the needs of identified end clients.
- Safeguarding client assets and ensuring remuneration arrangements do not conflict with clients' interests.
Appropriate information must be provided in good time about the firm, its services, the financial instruments and strategies, execution venues, and all costs and charges.
What is the best-execution obligation?
Firms must take all sufficient steps to obtain the best possible result for their clients when executing orders.
Relevant factors include:
- price
- costs
- speed
- likelihood of execution and settlement
- size and nature of the order
The relative importance of these factors depends on the client, the order, the financial instrument and the available execution venues. Firms must establish and apply an order-execution policy and be able to demonstrate that they executed orders in line with it.
What are the costs disclosure and inducements rules?
MiFID II strengthened cost transparency. Firms must disclose all costs and associated charges relating to investment and ancillary services and to the financial instrument, aggregated so the client can understand the total cost and its cumulative effect on returns, both before the service is provided and on an ongoing basis.
The framework also tightened rules on inducements — fees, commissions or non-monetary benefits paid to or by third parties. ESMA has issued detailed guidance and Q&As on information on costs and charges, inducements, and post-sale reporting.
What changed for investment research (unbundling)?
MiFID II introduced research unbundling, requiring firms to pay separately for investment research and for execution services rather than receiving research as a bundled benefit. The aim was to reduce conflicts of interest and improve cost transparency for clients.
These provisions have since been amended. Following the EU Listing Act, investment firms may again choose to pay jointly or separately for execution and research, subject to conditions — relaxing the strict separate-payment requirement that originally applied.
What transparency and transaction-reporting duties apply?
MiFID II and MiFIR expanded both pre-trade and post-trade transparency, requiring trading venues and systematic internalisers to publish quotes and trade information, calibrated by instrument type (equities and non-equities).
Firms and venues must also report transaction data to regulators to support market surveillance and the detection of market abuse. MiFIR sets out the public-disclosure and supervisory-reporting requirements, while MiFID II governs the conduct and organisational rules behind them. The regimes have been refined by later amendments, including Directive (EU) 2021/338 and Directive (EU) 2024/790.
Frequently asked questions
When did MiFID II take effect?
MiFID II became applicable on 3 January 2018. It was adopted in 2014, and its original application date of January 2017 was postponed by one year by Directive (EU) 2016/1034.
What is the difference between MiFID II and MiFIR?
MiFID II (Directive 2014/65/EU) is a directive transposed into national law, covering firm authorisation, organisation, conduct and trading venues. MiFIR (Regulation (EU) 600/2014) is directly applicable and covers market transparency, transaction reporting and the trading obligation for derivatives. They form one combined framework.
What is the difference between suitability and appropriateness?
A suitability assessment applies to investment advice and portfolio management and checks whether a product fits the client's objectives, financial situation and knowledge. An appropriateness assessment applies to certain non-advised services and checks only whether the client understands the risks of the product.
What does best execution require?
Firms must take all sufficient steps to obtain the best possible result for clients, considering factors such as price, costs, speed, and likelihood of execution and settlement, and must maintain and follow an order-execution policy.
What is research unbundling under MiFID II?
Research unbundling required firms to pay separately for investment research and for trade execution, to reduce conflicts of interest and improve cost transparency. The EU Listing Act later reintroduced the option to pay jointly or separately under conditions.
Who supervises MiFID II?
National competent authorities in each EU Member State supervise firms and venues, while the European Securities and Markets Authority (ESMA) coordinates supervision and issues guidelines, technical standards and Q&As to promote consistent application.