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Exchange Rates Explained: What They Are, Why They Change & Where to Find the Best Rates

Katherine Li
May 31, 2025
5 minute read

Exchange rates impact everything from your vacation budget to business profits. Yet many people don’t fully understand what they are or how they work. At Pulse FX, we believe that clarity leads to smarter financial decisions. Here's your ultimate guide to understanding exchange rates and how to make them work for you.

What Is an Exchange Rate?

An exchange rate tells you how much one currency is worth compared to another. For example, if 1 Canadian Dollar (CAD) equals 0.67 Euros (EUR), you’ll get €0.67 for every CAD you exchange.

But exchange rates change all the time—which can affect how much foreign currency you get when you travel or transfer funds internationally.

Market Rate vs. Customer Rate

Market Rate (a.k.a. Interbank or Mid-Market Rate):
This is the real-time currency conversion rate used between large banks and financial institutions. It's the “wholesale” rate.

Customer Rate:
This is the rate you’ll typically receive when exchanging money. It’s based on the market rate, but includes a margin to cover operational costs and provider profit.

At Pulse FX, we aim to offer customer rates as close to the market rate as possible—with minimal fees.

Why Do Exchange Rates Change?

Exchange rates fluctuate due to a mix of economic, political, and market factors, including:

  • Interest Rates – Higher interest rates usually attract more foreign capital, raising the value of the currency.
  • Inflation – Countries with lower inflation rates tend to see their currency appreciate over time.
  • Political Stability & Economic Performance – Stable, economically sound countries often enjoy stronger currency values.
  • Supply and Demand – Like any market, currency values shift based on buying and selling trends.

These changes can occur hourly, daily, or over weeks—just like ocean tides.

Comparing Exchange Rates: What to Watch For

When comparing rates, don’t just focus on the number. Consider these key factors:

  • Margin or Mark-Up: The hidden fee embedded in your rate.
  • Flat Transaction Fees: These can vary widely and sometimes cancel out a good-looking rate.
  • Transfer Speed: Some providers offer better rates but slower delivery.

At Pulse FX, we eliminate guesswork. Our rates are competitive, transparent, and optimized for both small and large transfers.

Where to Find the Best Exchange Rates

1. Banks and Financial Institutions

Reliable but often expensive. Banks charge higher margins and may include international transaction fees.

2. Currency Kiosks (e.g., Airports, Malls)

Convenient, but often the worst rates due to fixed pricing and high mark-ups.

3. Online Currency Platforms (like Pulse FX)

Fast, accessible, and usually the most cost-effective. We offer near-market rates and low to no fees.

Pulse FX Advantage: Smarter Exchange, Greater Value

Global Network, Local Efficiency

By using local bank accounts in over 100 countries, we minimize transfer routes and reduce costs.

Low Margins, No Surprise Fees

We strip out unnecessary middlemen and pass the savings on to you.

Real-Time Alerts & Rate Locking

Use our tools to track exchange rates and lock in favorable ones when they hit your target.

24/7 Support and Flexibility

Make transfers at your convenience—day or night, from your phone or desktop.

FAQs

What is the difference between a market rate and a customer rate?
The market rate is the real-time wholesale rate. The customer rate includes a margin added by providers.

Why do exchange rates fluctuate so frequently?
Rates shift based on supply and demand, economic indicators, central bank policies, and global events.

Where can I find the best exchange rates?
Online platforms like Pulse FX typically offer better rates than banks or kiosks, especially for larger transfers.

Conclusion

Exchange rates aren’t just numbers—they’re opportunities. By understanding how they work and where to find the best ones, you can save more on every transaction. With Pulse FX, you get transparent pricing, real-time tools, and expert support to ensure you make the most of your money every time.

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