FX Global Code: The Rulebook That Isn't a Rulebook

A market where trust had to be rebuilt

Foreign exchange — FX for short — is the business of swapping one currency for another. It's the largest financial market in the world, and it quietly keeps international trade and investment moving. When you buy imported goods or a fund holds overseas assets, FX is doing the plumbing.

By the mid-2010s, that plumbing had a reputation problem. Serious misconduct had been uncovered, heavy fines followed, and confidence between market participants — and between the public and the market — had worn thin. Guy Debelle, who chaired the group that wrote the FX Global Code, put it bluntly: the lack of trust was impairing how the market functioned.

The response was unusual. Rather than wait for regulators to impose a new rulebook, central banks and private-sector firms built one together. The FX Global Code was launched in May 2017, developed by the Foreign Exchange Working Group under the auspices of the Markets Committee, with support from a Market Participants Group drawing on the sell side, the buy side and infrastructure providers.

What the Code actually is

The Code is a set of global principles of good practice for the wholesale FX market. It contains 55 principles grouped into six areas: ethics, governance, execution, information sharing, risk management and compliance, and confirmation and settlement.

Its stated purpose is to promote a market that is robust, fair, liquid, open and appropriately transparent — one where a diverse set of participants can transact confidently at competitive prices that reflect available information, and behave to acceptable standards.

Here's the part people often miss. The Code does not impose legal or regulatory obligations, and it does not replace regulation. It's designed to supplement local laws, rules and regulations, not to override them. That voluntary character is the whole point.

Why principles instead of rules? Debelle's answer is memorable: rules are easier to arbitrage than principles. The more prescriptive a code becomes, the less people stop to think about what they're doing. A principles-based document forces firms to ask whether their behaviour is consistent with the spirit of the guidance, not just whether it technically clears a checklist.

Who it applies to — and how much

The Code is written for all participants in the global wholesale FX market. That includes sell-side institutions such as dealers and banks, buy-side firms such as asset managers, hedge funds and corporates, plus market infrastructures including trading platforms and algorithmic service providers.

That's a deliberately wide net, and it raises an obvious question: does a small corporate treasury really face the same expectations as a global bank? No — and the Code says so. Adoption is meant to reflect the size of a firm, the complexity of its FX activity and the nature of its engagement with the market. A firm handling a few hedges a year and a firm streaming thousands of prices a second are both in scope, but the specific principles that matter most to each will differ.

To make that practical, the Global Foreign Exchange Committee — the body that maintains the Code — created a Proportionality Self-Assessment Tool. Answer a few questions about your FX activity and it produces a report highlighting which principles apply to you. There's also a Roadmap to Adherence setting out ten steps firms can consider, and a set of 38 frequently asked questions.

Signing on the dotted line

Commitment is demonstrated through a Statement of Commitment — a document an institution signs to signal that it has reviewed the Code, regards its principles as good practice, and is committed to acting consistently with them.

These statements sit on public registers, and the GFXC maintains a Global Index of Public Registers, a central location compiling participants who have adopted the Code. As of December 2024, 1,328 entities globally had signalled adherence. One caveat the GFXC itself notes: that figure may involve some double counting, since a firm's statement might appear on more than one register.

Central banks aren't asking others to do anything they won't do themselves. The Riksbank observes the Code and expects its FX counterparties to follow it — new counterparties must certify adherence before transactions can be executed. The Bank of Thailand has said that from 2025 onwards, its eligible domestic FX trading counterparties must adhere. The Central Bank of Ireland and its European System of Central Banks peers have renewed their own Statements of Commitment. The Federal Reserve Bank of New York revised its counterparty policy to emphasise Code adherence and expects member firms of its Foreign Exchange Committee to demonstrate commitment.

Notice the pattern: for a voluntary standard, the practical pressure can feel rather firm. A central bank can't legally compel you, but it can decline to trade with you. That's a nudge with elbows.

Where brokers, liquidity providers and platforms fit

If you provide liquidity — meaning you quote prices and stand ready to trade — the Code has specific expectations about how you treat the firms asking you for prices.

One area the GFXC spent enormous effort on is "last look." That's a practice where a liquidity provider receives a trade request and has an opportunity to accept or reject it against its quoted price. The Code is clear that if last look is used, it should be a risk mechanism for checking price and validity — and for nothing else. The guidance says providers should apply those checks without delay. Anything that deliberately prolongs the window is contrary to the intent of the Code.

There's a genuine definitional trap here, and Debelle flagged it directly. Some people use "hold time" to mean the length of the last look window; others use it to mean a deliberate delay before checks begin. A non-zero window is unavoidable — no technology runs instantaneously — but a deliberate delay is a different thing entirely. His advice: if someone talks to you about hold time, ask them what they mean before you reply. Semantic clarity, it turns out, is a risk control.

Another area is "pre-hedging" — managing the risk associated with anticipated client orders, designed to benefit the client. The Code's guidance is that a liquidity provider conducting pre-hedging should behave with integrity. Importantly, there's no guarantee it will result in a trade, or a trade at a price beneficial to the client. Pre-hedging with no intent to benefit the client or market functioning is not consistent with the Code and may constitute illegal front-running.

For e-trading platforms, including anonymous venues, the Code encourages transparency about market data policies — which user types get data, at what frequency and latency — and about how credit limits are monitored. Platforms are also encouraged to disclose policies for managing users' unique identifiers, and to make available the Code signatory status of their users.

Providers of algorithmic trading or aggregation services are encouraged to disclose conflicts of interest that could affect how client orders are handled, such as those arising from interaction with their own principal market-making desk. To make comparison easier, the GFXC has published templates for algo due diligence and transaction cost analysis, plus standardised Disclosure Cover Sheets for liquidity providers and platforms. Using them is voluntary.

It keeps changing

The Code is a living document. It was reviewed and updated in July 2021, when 11 of the 55 principles were amended, and again in December 2024, when five principles were updated to strengthen guidance on FX settlement risk and to increase transparency around certain transactions and the use of client-generated data on electronic trading platforms. The ESCB welcomed the December 2024 update in October 2025.

Settlement risk matters because the sums involved are large and the consequences of a payment failure can ripple outward. The 2021 amendments placed greater emphasis on payment-versus-payment mechanisms, where the two sides of a currency exchange settle together, and added language discouraging "strategic fails" — deliberately missing a payment obligation. The GFXC also runs semi-annual FX settlement risk surveys.

Reviews happen roughly every three years, with the 2026 FX Global Code Survey feeding into a 2027 review. When updates land, the GFXC has suggested a 12-month period should be sufficient for affected firms to align their practices, and encourages signatories to renew their Statements of Commitment.

What it means if you're outside the wholesale market

If you're an individual exchanging currency for a holiday or a small payment, the Code isn't aimed at your transaction. It governs the wholesale market — the professional layer where institutions trade with each other and with large clients. Its relevance to you is indirect but real: a well-functioning, trustworthy FX market supports trade, investment and, as the Central Bank of Ireland notes, the smooth transmission of monetary policy to the real economy.

It's also worth being precise about what the Code can and can't do. It cannot force anyone to behave well. As the New York Fed's remarks put it, no code — and indeed no law or regulation — can compel every participant in a market this broad and diverse to maintain a marketplace that values openness, resilience, high ethical standards and competition. That's not a reason to stop trying.

And jurisdiction still matters. The Code supplements local laws rather than replacing them, and different regulators have adopted it in different ways as a reference point for oversight. If you're trying to understand your own obligations, the Code is one input alongside whatever rules apply where you operate. That's a question for your compliance team, not a blog post.

The Code's own guidance acknowledges continued debate — on last look especially — and the GFXC has said it will keep monitoring and may take further action if needed. So treat it as a living standard with genuine open questions, rather than a settled answer sheet. Which, for a document built on the idea that participants should think rather than tick boxes, seems entirely fitting.