What a carry trade is
A carry trade means holding a position in a currency with a higher interest rate against a currency with a lower interest rate. The trader aims to collect the difference between the two rates, called the rate differential.
In spot forex and CFDs, this differential reaches your account as swap. Swap is the interest adjustment applied to a position held open past the daily rollover time. If you are long the higher-yielding currency, the swap can be a credit. If you are on the other side, it is usually a charge.
The idea is simple. The risk is not. While you collect swap, the exchange rate keeps moving. A small adverse price move can cancel a long run of swap credits.
How swap interest works in forex
Swap interest depends on the rates of both currencies in the pair, plus the broker's own markup.
- Swap points. Platforms such as MetaTrader 4 and MetaTrader 5 list a "swap long" and a "swap short" value for each instrument. These are usually in points and are applied per lot for each night the position stays open.
- Positive and negative swap. One side of a pair may show a credit and the other a charge. Often both sides show a charge, because the broker's markup is larger than the rate differential.
- Rollover. Swap is applied once per trading day at the broker's rollover time. Positions closed before that time do not receive or pay swap for that day.
- Weekend charge. Many brokers apply a larger swap on a set weekday to cover the weekend, when the market is closed but interest still accrues.
- Changes. Swap values change when central banks change rates and when brokers update their conditions. A pair that pays a credit today may stop paying later.
To turn swap points into money for your own position size, use the calculator below.
Fill in the empty fields to see the result.
Swap = points × point size × contract size × lots, per night; negative means you pay. Swap values are set by the broker and change.
For more on how swap is charged and shown on trading platforms, see Swap fees. If you trade with Exness, check the current swap for each instrument in the Exness personal area or on the official site.
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Where the rate differential comes from
Central banks set policy rates, and market interest rates follow them. A currency whose central bank keeps rates high relative to others tends to carry a higher yield.
Pakistan offers an example of a policy rate decision: SBP policy rate raised by 50 bps to 12% with effect from 27.10.2026 (MPC). Policy rates like this move over time, and the differential between any two currencies can narrow or reverse after a single meeting. For background on how SBP decisions are made and published, see SBP rates and economy. For how rate decisions affect currencies in general, see Fundamental analysis.
Typical carry trade strategy rules
Traders who run a carry trade strategy usually follow a set of habits. These are common practices, not recommendations:
- Check the swap on the platform, not the headline rates. The broker's swap values decide what you actually receive or pay.
- Look at the trend. Many carry traders hold a carry position only while price is also moving in their favour. If price is moving against the carry, the swap rarely makes up for it. See Trend following.
- Use low leverage. Carry positions are held for weeks or months. High leverage makes even normal price swings dangerous for the account.
- Set a stop-loss. The stop decides the maximum loss, and that loss is often far larger than the swap you can collect in the time you hold.
- Spread across pairs carefully. Many carry pairs move together because they react to the same risk sentiment. Holding several of them does not always reduce risk. See Pairs trading.
- Watch the central bank calendar. Rate decisions and inflation data can change the differential and move price sharply. See News trading.
Carry trades fit within longer holding styles, so Position trading and Swing trading are useful background.
Hypothetical example: swap income vs price move
This example is hypothetical. It uses no real prices or swap values and shows no past or expected results.
A trader opens a long position in a pair where the base currency has a higher rate than the quote currency. The platform shows a small positive swap for long positions.
- Each night, the account receives a small swap credit.
- After several weeks, the credits add up to an amount the trader notices.
- Then, after a weak risk-sentiment day, the pair falls sharply in a single session.
The price drop in that one session is worth more than all the swap collected over the previous weeks. The position is now at a net loss even though it "earned interest" every night.
The point is the imbalance. Swap builds slowly in small steps, while price can move a large distance in hours. Use the swap calculator above with your own lot size to see how many nights of swap one adverse move of a given size would cancel. The Calculators page has pip and margin tools for the price side.
How carry trades lose money
These are the specific ways a carry position goes wrong:
- Price moves against you. This is the main risk. The exchange rate change usually dwarfs the swap.
- The swap turns negative. A central bank cuts rates, or the broker changes its markup, and the credit becomes a charge.
- Leverage and margin. A sharp move can push margin level down to the broker's stop-out level. Positions are then closed automatically at a loss. See Risk management.
- Gaps. Prices can open far from the last close after weekends or major news. A stop-loss may be filled much worse than its level.
- Spread widening. Around rollover and during stress, spreads can widen and trigger stops or raise costs.
- Crowded positions. When many traders hold the same carry trade, everyone tries to exit at once when conditions change.
Leveraged forex and CFD trading can lose money fast, and a carry trade is no exception. The nightly credit can make a losing position feel safe when it is not.
Crash risk when risk sentiment turns
Carry trades tend to do well when markets are calm and investors are willing to take risk. Higher-yielding currencies are often bought in those periods, and lower-yielding currencies are sold to fund them.
When fear rises after bad economic news, a financial shock or a surprise central bank move, the opposite happens. Traders close carry positions together. They sell the high-yield currency and buy back the low-yield funding currency. Because so many positions unwind at once, the move can be fast and large. This is often called a carry unwind or carry crash.
Historically, low-yielding funding currencies such as the Japanese yen have often risen sharply during these episodes. Pairs like AUDJPY or NZDJPY can drop hard in a short time. Losses in such moves can exceed a long period of collected swap.
Managing your own reaction in these moments matters too. See Trading psychology.
Pakistan context: legal points to know
Readers in Pakistan should understand the official position before using any overseas platform:
- On remittances: per the SBP, remitting foreign exchange to overseas forex/margin/CFD platforms is not allowed through any payment channel (FERA s.5(1))
- On residents' purchases: per the SBP, the purchase of offshore forex/margin/CFD products by Pakistani residents violates section 4(1) of FERA 1947
- On protection: per the SECP, offshore platforms have no Pakistani licence or oversight and offer no legal protection or recourse
For the full picture, see Law and regulators and Regulation and Safety. For the Islamic finance view on interest-based swap, see Islamic finance.
Frequently asked questions
Is a carry trade a way to earn steady income?
No. Swap credits can be cancelled by a single adverse price move, and swap values change over time. Leveraged trading can lose money fast.
Why do both sides of a pair sometimes show a negative swap?
The broker adds a markup to the swap. When the markup is larger than the rate differential, both long and short positions pay.
How do I know the swap on a specific pair?
Check the instrument specification in your trading platform, or your broker's official conditions. The swap calculator converts swap points into money.
Does a stop-loss protect a carry trade?
It limits the loss in normal conditions. In gaps or fast markets, it can be filled at a worse price than set.
Can I practise a carry trade without real money?
A demo account shows how swap is applied overnight. Demo results do not reflect real fills or emotions. See Forward testing and Demo account.
What is a swap-free account?
Some brokers offer accounts without overnight swap, often for Islamic finance reasons. Without swap, there is no carry to collect. Check current conditions with the broker directly.