Glossary

Managed Floating Exchange Rate: Definition & How It Works

A managed floating exchange rate — also known as a "dirty float" — is a currency regime in which a central bank actively intervenes in foreign exchange markets to keep its currency within a target range, without committing to a fully fixed peg.

Unlike a pure floating regime, where market forces alone determine a currency's value, and unlike a hard peg, where a rate is locked to another currency by policy mandate, managed floats occupy the middle ground. The central bank monitors the exchange rate continuously and steps in — typically by buying or selling its own currency in the open market — whenever the rate drifts beyond an acceptable corridor. The goal is not to eliminate exchange rate movement, but to prevent extreme swings that could destabilise the economy, harm exporters, or fuel inflation.

How it works in practice

The most prominent modern example is China's renminbi (CNY) regime. Each morning, the People's Bank of China publishes a reference rate — a midpoint — against which the renminbi is permitted to move no more than 2% in either direction during onshore trading that day. This creates a daily band: narrow enough to give the central bank meaningful control, wide enough to allow some market-driven movement.

Other central banks — particularly in emerging market economies — use similar mechanisms, intervening less systematically but still with clear intent to smooth volatility or defend competitive exchange rate levels.

Why it matters for corporate treasurers

For companies with international operations, the regime governing a trading partner's currency has a direct bearing on FX risk management. A managed float introduces a specific kind of complexity: the currency behaves as though it floats, and standard hedging tools can be applied, but central bank intervention can cause abrupt, policy-driven moves that do not follow typical market logic.

This is particularly relevant for businesses exposed to currencies such as CNY, INR, or BRL — currencies that operate under varying degrees of managed float arrangements. In these cases, a treasurer cannot rely solely on market signals when forecasting exchange rate movements. Policy decisions, reserve levels, and the central bank's credibility all feed into the picture.

Understanding the exchange rate regime of each currency in your portfolio is therefore a foundational step before building any FX hedging programme. It informs which instruments are available and liquid, how far in advance exposure can realistically be hedged, and how to interpret rate movements when calibrating your budget rate.

A managed float is neither inherently more nor less risky than a free float — what matters is that your currency risk management approach accounts for the specific dynamics of each regime your business operates in.

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The deliberate difference or margin applied between the spot foreign exchange rate at the time of budget creation and the actual rate used for pricing during the campaign period.

For example, if a EUR-based company purchases inputs in PLN and the spot EUR-PLN rate is 4.3113 at budget creation, using a budget rate of 4.1820 for pricing represents a 3% markup. This markup serves as a buffer against adverse currency movements and helps maintain profitability.

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Major currency pairs are the most widely traded currency pairs: EUR-USD, USD-JPY, GBP-USD and USD-CHF. According to data from the Bank for International Settlements (BIS), the U.S. dollar is the most widely traded currency, being on one side of 88% of all trades in the $6.1 trillion/day FX market. Other major currency pairs include EUR-CHF, USD-CAD, AUD-USD. Major currency pairs are traded 24/5 all over the world in highly liquid markets, with low bid-offer spreads both in spot and forward markets.

Margin is the security required from the borrower in all kinds of financial transactions. It protects lenders against the risk of a payment default. If a borrower fails to pay the amount owed on the due date, the lender can claim the collateral in order to minimise losses from the defaulted payment. Margin is a crucial element in loans and other financial instruments like forward or futures contracts, as it lowers the risk of default and limits the negative impact of any default to a transaction as well as, more generally speaking, to international trade and the financial markets.

A margin call is a demand to deposit additional funds or securities to cover possible losses. A margin call usually indicates that the collateral held for a given position has lost value. Let us imagine a situation where a ‘short’ EUR forward position is initiated, on which a 5% margin is requested. The position is ‘long’ USD 100,000 and the forward rate is EUR-USD 1.1111. Measured in EUR, the initial margin requirement is EUR 4,500 = 100,000 x 0.9000 x 0.05. If the forward rate moves to 1.1240, the forward position loses EUR 1,032.03. A margin call may be triggered if the ‘cover’ (the loss in proportion to collateral in deposit) falls below, say, 80%. This would be the situation in our example, as the ‘cover’ would be 77.07% = (4500 - 1,032.03)/4,500. An unheeded margin call on such a position may result in the automatic closing of the position at the prevailing market rate. That would happen if the ‘cover’ falls below, say, 60%.

A margin deposit refers to the funds held in security that is required as a protection against possible losses. Let us imagine a situation where a ‘short’ EUR forward position is initiated, on which a 5% margin is requested. The position is ‘long’ USD 100,000 and the forward rate is EUR-USD 1.1111. Measured in EUR, the initial margin requirement is EUR 4,500 = 100,000 x 0.9000 x 0.05. If the position shows losses, the margin deposit may need to be increased, depending on the severity of the loss.

Margin requirement is a financial concept related to the minimum amount in collateral that the issuer of a financial security requests from the buyer, to hedge against the risk of adverse price movements or the buyer defaulting.In the foreign exchange markets, businesses or individuals who wish to enter a currency forward contract in order to protect their exposure to exchange rate volatility are normally requested to deposit a minimum margin requirement.It acts as a surety against transactional default and provides other parties to a transaction with confidence that the counterparty will fulfil its contractual obligations.The margin requirement in currency exchange is normally in cash, deposited in a margin account. It is usually a percentage of the total amount to be transacted.Should the margin requirement change – as is regularly the case in currency transactions as exchange rates change continuously – there is a margin call, whereby the counterparty must deposit the shortfall in order to meet the new margin requirement.

Margin risk, in the context of FX risk management, refers to the impact of unexpected currency fluctuations on operating profit margins. A Europe-based exporter to the United States could see operating profit margins decrease in the event of a sharp EUR appreciation, as it would be forced to slash USD selling prices in order to maintain market share. A hard definition of margin risk management would be a stated policy of not having operating margin decrease by more than 5%, for example, due to the changes in exchange rates. Currency management, including pricing in foreign currencies and effective hedging programs, can go a long way in protecting a firm from FX-induced margin risk.

Mark-to-market is a valuation method aimed at providing a measurement based on current market conditions. Because mark-to-market is based on current market values, it gives a realistic picture of a company’s financial position. Originally introduced to assess the value of futures contracts, mark-to-market accounting has become prominently used in over-the-counter derivatives markets, including forward markets, where it is one of the main tools to calculate FX gains and losses. Mark-to-market has received criticism because in volatile times, it can provide results that do not accurately portray the true value of an asset or liability. If, for example, investor confidence in a certain market suddenly dissipates, leading to forced liquidations in the short-term, values could fall sharply, while not reflecting long-term valuation considerations.

In financial markets, the figure of a market maker defines any company with the power to set buy and sell prices of financial instruments or commodities. The U.S. Securities and Exchange Commission defines it as "a firm that stands ready to buy and sell a particular stock on a regular and continuous basis at a publicly quoted price".In practice, a market maker, also known as a liquidity provider, is a company or individual that quotes the bid and ask price of any commodity or financial product in order to make a profit from the bid/ask spread.In stock markets, market makers are the entities entitled to buy and sell stocks listed on an exchange, such as the London, New York or Tokyo stock exchanges.In the foreign exchange market, most trading firms and many commercial banks are market makers. They create a bid/ask spread between the price they pay for a specific currency and the price at which they sell that currency, in some cases applying significant surcharges.

In FX trading, a market order is an order to buy or sell a currency immediately, whether it is undertaken in the spot or forward market. This type of order guarantees that the order will be executed, but does not guarantee the execution price. A market order generally will execute at or near the current bid (for a sell order) or ask (for a buy order) price. However, it is important for traders and risk managers to remember that the last-traded price is not necessarily the price at which a market order will be executed. Other types of FX orders include limit orders, stop-loss orders and take-profit orders.