What factors affect the value of the US dollar?

What impacts the value of the US dollar?

There are six fundamental factors that have an influence on the US dollar exchange rate. These include things such as economic performance, supply and demand of currency, inflation and geopolitical factors. More of these are detailed below.
Learn more about forex

1. Moves in the federal funds rate

The federal funds rate is the interest rate commercial banks lend extra reserves to one another on an overnight basis. The target rate is set by the Federal Reserve’s Open Market Committee, and it serves as the base interest rate to control the supply of money in America.¹
Regulations governing commercial banks in the US require that a certain percentage of total funds deposited are held in reserves. This serves as assurance towards the bank’s financial stability and solvency.¹
In a constantly changing environment, banks may find themselves in excess or shortfall of the required daily reserves. When in a shortfall of reserves, banks take out overnight loans from their peers. And when in excess banks will also lend to their peers.¹
The federal funds rate has an impact on inflation, short-and long-term interest rates, as well as foreign currency exchange rates – and is used to bring these costs under control. The higher the federal funds rate, the more expensive bank loans, home loans or mortgages and credit cards will cost to pay back.²

Above and beyond its effect on other interest rates, the federal funds rate also serves as the base interest rate to control the supply of money within the US economy.² When there’s a higher demand for the US dollar, which often occurs when there’s a short supply of the currency, its monetary value increases.
When the federal funds rate increases, the cost of borrowing also boosts the economy’s wealth, but it also helps bring an end to a rise in inflation.
Learn more about the Federal Open Market Committee

2. Demand for currency

The US dollar has been predominantly used as a currency peg. This is when a government policy implements fixed exchange rates for its national currency to that of another country, in this case the US dollar. Some countries that use the US dollar as a medium of exchange include Ecuador, Puerto Rico and Zimbabwe.

Using the US dollar as a dominant currency increases its demand, making it the world’s reserve currency as most countries use it for the global trade of commodities. Central banks and major financial institutions store reserve currencies for use in global transactions and to decrease risks associated with exchange rates.³

However, over the years, another threat to the US dollar’s status as a reserve currency has been other alternative currencies. These are the euro, Japanese yen, British pound sterling, including the smaller reserve currencies like the Canadian dollar and Australian dollar.³

Despite their small market share in the reserve currency, these alternative currencies are slowly eating away at the US dollar’s dominance and might negatively impact the future demand for this currency.³
Learn more about the most traded currencies in the world

3. Inflation

Inflation is the rate at which an economy’s currency loses its purchasing power over time. A weaker US dollar would increase the price of imports, leading to a rise in inflation. This would place more pressure on the US economy, that’s currently dealing with rising inflation and potentially restricting consumers from borrowing.³
The government tends to increase the federal funds target rate, subsequently leading to a rise in short-term interest rates. This raises the cost of credit, which increases the economy's wealth as the supply of money is reduced. However, it also deters consumers and businesses from taking out loans, encouraging them to save and potentially earn higher interest.⁴
An economic cycle shows how inflation affects the financial markets. There’s an increase in interest rate when the economy grows and a decrease when the economy contracts.

For instance, the cost of a Mars chocolate bar you buy today is likely to be priced higher than it was a year or two ago. Meaning if you buy an item for $10 today, it’ll cost quite a bit more in a year or two.
While this is a simplified example, it does demonstrate the impact inflation has on the consumer’s purchasing power, which is applicable to the cost of both goods and services.
Learn about how to trade on inflation

4. Performance of the US economy

When the US economy performs well, the value of the dollar appreciates. The US dollar showed its resilience post-pandemic bouncing back to its former glory as interest rates increase at a fast pace compared to other global economies.³ Interest rate hikes are often attractive to foreign investors, as they might increase earnings when trading the US dollar.
The opposite would hold true if the US dollar price depreciated due to a weak economic performance. A severe weak US dollar would negatively affect global economies. And with the depreciation of the US dollar, other world currencies like the Eurozone, China and Japan will also be devalued since their economic growth heavily rely on exports.³
Learn more about the major currency pairs

5. Trade balances

America’s huge current account deficit is one of the biggest threats to the US dollar. Since almost four decades ago, the value of goods and services imported into the US exceeds those being exported. This is reflected in the high inflation, subsequently decreasing the US dollar’s value.³

In 2021, the US’s current account deficit increased by 33.4% ($205.5 billion) to $821.6 billion due to its widened shortfall on goods. The US also takes out loans from foreign lenders to finance itself against the deficit. This may have a negative impact on the value of the US dollar price if this global economic leader does not claw its way out of debt.^3,5

6. Political instability and unpredictable events

When geo-political uncertainty is on the rise, investors tend to move wealth into safer, less volatile currencies that will weather the storm better. There are several of these currencies around the world – with the US dollar being one of them.
The ongoing Ukraine-Russia conflict has also led to the dominance of the US dollar as investors looked for a ‘safer haven’ and a more liquid market.6 Since the beginning of the Russian invasion on Ukraine earlier in the year, the price of the US dollar has continued to strengthen.³
This followed the US dollar’s weakened state compared to major currencies like the euro and the pound sterling in the first year of the pandemic. Other major currencies include the Japanese yen, Canadian dollar, Swedish krona and Swiss franc.⁷
In the 12 months to June 2022, the US dollar price increased by 12% against the euro, 9% against the pound, and 16% against the yen.⁷
In mid-May of this year, the US dollar’s weighted average value against the world’s six major currencies and appreciated by 9% since February – a 20-year high. Market sentiment is that the US dollar may reach the same level as the euro come end of 2022.7
Learn more about ‘war economies’

How does war affect the US dollar?

The gold price is used as a measure of the US dollar’s value and investor confidence in the currency during times of war and peace. Challenges the value of the US dollar faced during times of war led to other nations exploring alternative forms of money, which if successful, could have eroded its dominance as an international currency.⁸
Since the Korean War, which took place between 1950 to 1953, the US lost a significant amount of its gold reserves. The Vietnam War that occurred from 1964 to 1975 saw a continued loss of reserves leading to the depreciation of the US dollar.⁸
The short-term depreciation of the US dollar during the Iraq War that started in 2003 and is still ongoing wasn’t representative of the value of this dominant currency during war times.⁸
During times of war, some nations involved in the conflict tend to take advantage of the situation by trying to dislodge the US dollar from its dominant position. This was evident in 2007 when Russia tried to replace the US dollar for rubles in its financial markets. That same year Iran also attempted to persuade the Organization of the Petroleum Exporting Countries (OPEC) to accept euros rather than the US dollars for oil.⁸
This would have reversed the geopolitical diplomatic arrangements from the 1970s and 1980s that enabled the US dollar to be closely linked with gold, making it an international currency for the global commodity markets.⁸

How to trade on forex and the US dollar

1. Choose a currency pair to trade
2. Create an account or practise on a demo
3. Decide whether to ‘buy’ or ‘sell’
4. Take steps to manage your risk
5. Open your first trade
6. Monitor your position

Open a CFD trading account and trade forex with us. Take your position on the forex spot price, FX forwards and FX options using contracts for difference.
When trading with leverage, you’ll need to pay an initial deposit called margin to open a position and increase your exposure to your foreign exchange currency of your choice. While leverage can magnify your profits, it’ll amplify your losses – manage your risk carefully.
With us, you can trade the US dollar by choosing a forex pair that includes the American currency. Forex trading involves buying one currency while selling another based on how much each currency is valued on the FX market.
For instance, the current market price of the GBP/USD forex pair shows how many US dollars it would take to buy one pound. Some of the other common forex pairs you can trade are the USD/CAD, USD/CHF, USD/JPY, AUD/USD and USD/NZD.
Once you’ve chosen the forex market to trade, you can then open a live account with us. If you’re not confident with your trading skills, you can open a demo account with us so you can practice with £10,000 in virtual funds in a risk-free environment. You can also use our online trading courses to improve your skills.

Factors affecting the US dollar price summed up

• The federal funds rate has an impact on inflation, short and long-term interest rates, as well as foreign currency exchange rates and is used to bring these costs under control
• Inflation is the rate at which an economy’s currency loses its purchasing power over time. A weaker US dollar would increase the price of imports, which would lead to a rise in inflation
• America’s huge current account deficit is one of the biggest threats to the US dollar
• When geo-political uncertainty is on the rise, investors tend to move wealth into safer, less volatile currencies that will weather the storm better
• The gold price is used as a measure of the US dollar’s value and investor confidence in the currency during times of war and peace
• With us, you can choose to trade forex by using a CFD trading account

Footnotes
¹ Forbes Advisor, 2022
² Bankrate, 2022
³ CNBC, 2022
⁴ Forbes, 2022
⁵ Bureau of Economic Analysis, 2022
⁶ Financial Times, 2022
⁷ Econofact, 2022
⁸ The Economics of Peace and Security Journal, 2009