Why Futures Prices Move Forex and CFDs

When you buy EURUSD or an S&P 500 CFD on your broker's platform, it's easy to assume the price is made right there. But other markets are working behind those numbers, and one of the most important is the futures market.

In this guide you'll learn how futures, forex and CFDs are linked, why their prices differ slightly, and how to use that link in your own trading.

Three markets, one product

Picture three petrol stations at the same junction. If one drops its price, drivers pile in and the others soon follow. Financial markets behave the same way:

• Spot forex: buying and selling currencies for near-immediate delivery between banks and institutions, outside any exchange. According to the BIS Triennial Survey, global FX trading reached about $9.6 trillion a day in April 2025, with spot making up 31%.
• Futures: an exchange-traded contract to buy or sell at a set date in the future, a bit like ordering now and settling later. The best-known ones trade on CME in the US.
• CFDs: a contract between you and your broker on the difference in price. You never own the asset; you just take the gain or loss from the price change.

All three are talking about the same thing: the price of a currency or an index. That's why they can't drift far apart.

Link one: currency futures and the spot price

CME explains that a currency future is priced from two ingredients: the spot price and the short-term interest rate gap between the two currencies. The difference between the futures price and spot is called the basis.

• If the second currency in the pair (the US dollar in EURUSD) has a higher interest rate than the first, the future usually trades above spot.
• If it's the other way round, the future trades below spot.
• As expiry gets closer, the gap shrinks, and on expiry day futures and spot meet.

CME even offers a tool called FX Link that ties FX futures to the off-exchange spot market as a single spread. In other words, the two markets are tied together with a rope.

A practical tip: according to CME, Japanese yen, Canadian dollar and Mexican peso futures are quoted the opposite way round to the spot market. Yen futures, for example, show the price of the yen in dollars. So when the yen futures chart rises, USDJPY usually falls. Miss that and you could read a signal backwards.

Link two: index futures and index CFDs

For stock index futures, CME defines a fair value, the price a future should have in theory:

Fair value = cash index × [1 + interest rate × (days to expiry ÷ 360)] − dividends to expiry

The logic is simple: a futures buyer doesn't have to pay for all the shares up front, but also doesn't receive the dividends. The real futures price wobbles around this number with supply and demand, and if it strays too far, arbitrageurs (traders who profit from price gaps between markets) pull it back.

Now the key point: the NYSE core trading session runs from 9:30 a.m. to 4 p.m. New York time, which is 14:30 to 21:00 UK time for most of the year. But CME's E-mini S&P 500 futures and options trade almost around the clock. So when the New York cash market is shut and you're trading a US index CFD, the big market still making fresh prices is futures. UK readers will know the same pattern from the FTSE 100: its futures on ICE Futures Europe trade from 01:00 to 21:00 London time.

How does this help you? Check your broker's contract specifications to see which price your index CFD follows: the cash index or a futures contract. It affects the number on your chart and how the price behaves when the contract month rolls over.

How it connects to other markets

Futures don't just mirror other markets; they often lead, because they're awake while others sleep. Two real examples from CME:

• The night Russia invaded Ukraine (February 2022): nearly 560,000 E-mini S&P 500 options contracts traded at CME before the US cash equity market opened.
• The March 2023 banking crisis: as news broke about Silicon Valley Bank and the emergency measures US regulators announced overnight, more than 686,000 E-mini S&P 500 options contracts traded outside US hours.

So the market's first reaction to the news formed in derivatives, hours before the cash exchange opened. CFDs that quote outside cash hours carry that move with them.

The effect spreads to other indices too: CME says the S&P 500 is widely used as a stand-in for many Asian and European indices, and investors there use it to hedge their local benchmarks. A move in US futures during Asian hours can set the tone elsewhere.

Remember, this link isn't fixed or exact. Futures can trade a little above or below fair value in the short run, and market behaviour changes with conditions.

A worked example with simple numbers

This example is hypothetical, and the numbers are simplified.

Part one: index futures

• Cash index: 5,000 points
• Interest rate: 4% a year
• Days to expiry: 90
• Dividends to expiry: 12 points

Fair value = 5,000 × [1 + 0.04 × (90 ÷ 360)] − 12 = 5,000 × 1.01 − 12 = 5,038

So it's normal for the future to sit about 38 points above the cash index. That gap isn't free money: it shrinks as expiry approaches and hits zero on expiry day. If your CFD is built on futures, rolling to the next contract month (which has more days to run) can make its price jump in one go.

Part two: currency futures

• EURUSD spot: 1.1000
• US dollar rate: 4%; euro rate: 2%
• 90 days to expiry

Approximate futures price = 1.1000 × (1 + 0.04 × 90 ÷ 360) ÷ (1 + 0.02 × 90 ÷ 360) = 1.1000 × 1.01 ÷ 1.005 ≈ 1.1055

So the future sits about 55 pips above spot, because the dollar (the second currency) has the higher rate. If you spot a level like 1.1055 on a EURUSD futures chart, don't paste it straight onto your spot chart; take the gap off first.

How to use this link in your trading

• Check futures before the cash open: index futures give a clue about the mood the cash market may open in.
• Know which price your CFD follows: cash or futures, and know the contract roll dates.
• In forex, remember the inverted contracts: yen, Canadian dollar and Mexican peso.
• Take leverage seriously: in the EU, for example, ESMA caps CFD leverage for retail clients at 30:1 on major currency pairs and 20:1 on major indices and gold, because of how risky these products are.

Common mistakes

• Copying levels from a futures chart onto spot: without allowing for the basis, your levels end up in the wrong place.
• Reading yen or Canadian dollar futures charts backwards.
• Treating the futures-cash gap as risk-free profit: the gap has a reason, and trading costs usually swallow any small opportunity.
• Forgetting about the price jump on roll day.
• Ignoring overnight moves: the cash market may be closed, but your risk isn't.

Practical checklist

• I know whether my CFD takes its price from the cash index or from futures.
• I have the expiry and roll dates in my calendar.
• Before the cash market opens, I check the futures on the same index.
• On currency futures charts, I've checked which way the price is quoted.
• I've set my leverage and stop-loss with overnight swings in mind.

Frequently asked questions

Why is my index CFD price different from the number on news sites?

Your CFD may be built on futures rather than the cash index. The gap between the two is the basis, which comes from interest rates and dividends. Outside cash hours, the cash index also stops moving while futures keep going.

Can I make risk-free money from the futures-spot gap?

That's usually done by large institutions with very low costs, and their activity is exactly what keeps prices close to fair value. For a retail trader, spreads and fees are usually bigger than those small gaps.

Why should a forex trader watch currency futures?

Because futures trade on an exchange and their price is tied to spot, so watching them gives you a fuller picture of the market. Just don't forget the basis and the quoting direction.

Wrapping up

Forex, futures and CFDs are like three petrol stations at one junction selling the same fuel. The gaps between their prices have reasons: interest rates, dividends and time to expiry. Because futures are open almost around the clock, they're often the first place news hits the price. Know where your CFD gets its price, account for the basis, and you'll be caught off guard far less often.

Want to learn this step by step, at your own pace? Check out our free courses and explore our pro tools in the software section.

Adapted from: CME Group (FX basis, FX Link, non-US hours trading), NYSE, ICE, BIS and ESMA

Trading carries a significant risk of loss. This article is for educational purposes only and is not financial advice.