Interest Rate
An interest rate is the percentage charged or earned on borrowed or saved money over a period of time.
It represents the cost of borrowing money or the reward for saving and investing.
Why interest rates are important
Interest rates affect:
- Loans and mortgages
- Savings accounts
- Investments
- Inflation
- The overall economy
Even small changes in interest rates can influence spending and financial markets.
How interest rates work
When money is borrowed, the borrower usually pays back:
- The original amount
- Additional money called interest
Example:
If you borrow €100 with a 5% interest rate, you may need to repay €105.
Interest on savings
Banks can also pay interest to people who save money.
Example:
- Deposit money into a savings account
- Bank pays interest over time
This allows savings to grow gradually.
Types of interest rates
Fixed interest rate
The rate stays the same over time.
Variable interest rate
The rate can increase or decrease depending on market conditions.
Simple vs Compound Interest
Simple Interest
Interest is calculated only on the original amount.
Compound Interest
Interest is calculated on both:
- The original amount
- Previously earned interest
Compound interest can significantly increase growth over time.
Who controls interest rates?
Central banks often influence interest rates to manage the economy.
They may:
- Raise rates to reduce inflation
- Lower rates to encourage spending and borrowing
Interest rates are an important economic tool.
How interest rates affect the economy
Higher interest rates
- Borrowing becomes more expensive
- Spending may decrease
- Inflation may slow down
Lower interest rates
- Borrowing becomes cheaper
- Spending and investment may increase
Why learning interest rates matters
Understanding interest rates helps you:
- Manage loans and savings
- Understand financial markets
- Make better financial decisions
- Understand economic changes
Interest rates affect both personal finance and the global economy.
A simple example
If a bank offers 3% yearly interest on savings, your money slowly grows over time.
Related terms
- What is Inflation?
- What is Compound Interest?
- What is Investment?
Source
Information simplified from the Wikipedia article “Interest Rate”.