Forex rollover rate – The complete guide!

Forex rollover rate is something traders come across if they have ever held an open position overnight. These are additional costs that you pay when trading forex (besides spread and/or commissions).

The rollover rates can go by different names. Some traders refer to forex rollover as overnight interest rate, or swap rates.

No matter what name you call it, forex rollovers cannot be avoided if you are a swing trader. It does not matter what currency pair you are trading either!

In many cases, the rollover rates should not be much of a concern anyways. Of course, these overnight fees tend to add up if you keep your position open over a span of weeks.

This article about the rollover rate in forex trading gives you complete insights into what is a rollover rate. You will learn why there is a rollover rate in the first place in the forex market and how it is calculated.

Be warned though, that calculating the exact swap rate is not possible. There is also a mark up applied to the overnight swap rate. Hence, you will never get the correct swap rate fee even if you painstakingly calculate it by yourself.

You will also learn some important points to bear in mind when trading the currency markets.

What is forex rollover?

A forex rollover is the overnight interest rate that is debited or credited to your trading account when your position is held overnight.

The swap rollover is based on the interest rate differential. This is applicable because when you trade in the currency markets, you are simultaneously buying one currency and selling the other.

When you buy one currency, you are essentially borrowing it from your broker.

Hence, there is an interest to pay on borrowing this currency. Similarly, when you buy another currency, you will also earn interest on this other currency. The swap rates tend to balance the difference in interest rates.

Generally, interest rates are represented as an annual percentage. But when it comes to the rollover fees, this annualized interest rate is broken down to the exact number of days for which your trading position is kept open.

Depending on the calculation, your trading account may get debited with extra interest, or it may get credited with the extra interest.

Traders refer to the forex markets as a positive rollover or a negative rollover. A rollover in forex is defined as the net difference between the interest rates of the two currencies.

For example, if you are buying the EURUSD, you are buying the EUR and selling the USD. Hence, for the EURUSD, the interest rates or the long rate (EUR) and the short rate (USD) apply.

Many websites misleadingly mention that the forex rollover rates is the difference between the central bank interest rates. This is not true!

If you don’t believe me, take a look at the overnight swap fees charged by your broker. If one goes by the logic of swap rates being the interest rate differential, then there are many currency pairs such as AUDNZD, or NZDJPY and many more which should attract positive swap rates on open positions.

But this is not the case!

The difference in interest rate is based on different factors such as the

What time is a rollover in forex applied?

Since the forex markets operate 24 hours a day, the term overnight can vary from one geographical location to another. Broadly speaking, a rollover in forex happens at 5PM EST (Eastern Standard Time).

The 5PM EST is the same as 21:00 GMT. You can now deduce at what time the rollover fees kicks in.

To be more precise, as long as your close out your position by 4:59 PM, you won’t be charged the rollover. But if you keep your position open at 5PM EST, then that currency position will attract the rollover rate.

Every forex broker follows a standard timezone.

You will typically find a forex broker using a GMT timezone or a GMT+2 (during European summer time) and GMT +3 (when daylight savings are on). Hence, it does not matter where a forex trader is located.

What matters is what timezone your forex broker is using. Based on this, at 5PM EST, the forex broker will automatically rollover your currency position into the next day.

What is a triple rollover day?

The triple rollover day is a Wednesday. On Wednesdays the rollover points are tripled to account for the weekends.

This comes into effect if you keep any of your trades open through to 5 p.m EST on a Wednesday. It does not matter whether you opened the position on a Monday or at 4:50 p.m. EST. Both the trades will attract the triple rollover fees.

How does forex rollover work?

To understand where a rollover rate is applied in forex trading, we need to look at how the currency markets work.

In the real spot markets, banks and other financial institutions exchange once currency for another. This spot transaction is based on the current prevailing exchange rate. But when it comes to currencies changing hands, the delivery is on T+2, or two business days after the spot date.

This is also known as the value date.

Similar to the spot transaction, there are other conventions such as Spot Next, Tomorrow Next or Tom-next or T/N.

The forex rollover calculations are not straight forward as using just interest rates. There is also another component to this.

What is Tomorrow next in forex and why it matters for overnight swap points?

Tomorrow next or T/N is a short term transaction in the currency markets. It allows traders to buy and sell currencies over two separate business days.

This is obvious from the name, Tomorrow and the Next day. This is where Tom-next differs quite a bit from the spot markets. In the spot markets, we already learned that traders take delivery of the underlying currency two business days later.

Using Tom-Next, traders can prevent taking delivery of the currencies. But the Tom-Next allows them to keep the forex positions open overnight.

The provider simply swaps the overnight positions for a similar contract on the next day. But since the markets keep moving, there is a difference between the two contracts.

This difference becomes the overnight swap rate adjustment.

Hence, if on the first day, you purchased EURUSD at 1.1810. But you need to sell this in order to buy the next day. Let’s assume that you sold the EURUSD position at 1.1812. But the next day, the EURUSD is at 1.1815. It is about 3 points higher.

Hence, for a 1 lot size trading position, one pip is equal to $10. Thus, at 3 points, the overnight swap rate is 3 points x $10, which is $30.

Financing costs also matter

Besides the Tom-next swap rates, there is an additional layer, which is the financing costs.

Since you are essentially borrowing one currency to buy or sell the other currency, there is an interest you need to pay or receive. This interest rate comes from the underlying LIBOR rates (not to be confused with the short term interest rates set by central banks).

These LIBOR rates dictate the actual lending rates in the interbank markets.

Hence, a forex position left open overnight attracts both the swap points as well as the interest rate for borrowing and lending.

How to avoid rollover forex?

Day trading will help traders to avoid the rollover fees. Day trading is when the trades are open and closed within the day. Since there are no overnight positions, there are no fees to pay or receive.

However, this should not be the primary reason for not keeping your currency pair open overnight. In many cases, the trading platforms automatically add or deduct the fees into your trading account.

As long as you close the positions by the end of the trading day, or 5PM EST, you can safely trade, knowing that there will not be any extra fees to bother about.

How to calculate the rollover interest overnight?

To calculate the overnight swap rates on open positions held overnight, we use the following formula:

Long Currency interest rate/Short Currency interest rate * Number of lots = Swap points in the quote currency.

If you are long on AUD/NZD, and if your account balance is also in AUD, then the above calculation is straightforward.

The long rate and the short rate are the financing rates, represented annually.

In another example that is more typical, your account balance may be in USD. In this case, you convert the resulting swap points into USD at the prevailing exchange rate.

How to find out the rollover interest rates charged by your forex broker?

Forex rollover rates from MT4
Forex rollover rates from MT4

A forex broker is generally publishes the rollover rates. You can find this information from the forex broker’s website.

Alternately, you can access the Market watch window in MT4 and right click on the currency pair. Then click on specifications which opens the specification window in your trading terminal. You will then notice the swap long and swap short points here.

A swap long, means that the swap rate applies to a long position. Likewise, swap short, applies to the short positions held overnight.

Not many brokers fully explain how the rollover rates work. Oanda is one of the few brokers who are an exception to the case. This page gives more details on how the swap rates are calculated.