Financial Calculators

Interest Calculator

Our interest calculator allows you to calculate the interest payments and final balances for not only fixed principal amounts but also periodic contributions.

Interest Calculator

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Table of contents

Understanding Interest
History and Interest Rates
Special Considerations
Types Of Interest Rates
Inflation Rate


The interest charge is the monetary cost of borrowing money. It is usually expressed in an annual percentage rate (APR). The interest is the money that a lender or financial institution gets for lending money. The percentage of ownership that a stockholder holds in a company is also known as interest.

Understanding Interest

There are two main types of interest that can be applied to loans: simple or compound. Simple interest refers to a fixed rate on the principle that was originally lent to the borrower. The borrower must pay this amount in order to be able to use the money. Compound interest refers to an interest in the principal as well as the compounding interest. The most popular type of interest is the latter.
Here are some of the factors that will be considered when calculating the type and amount of interest a lender will charge to a borrower:
  • Opportunity cost, or the inability to borrow the money.
  • Expected inflation
  • There is a chance that the lender will not be able to repay the loan due to default
  • Time is taken to lend the money
  • Potential for government intervention in interest rates
  • Liquidity
  • APR is the loan's interest rates plus any other charges such as origination fees, closing cost, or discount point.

    History and Interest Rates

    Today, borrowing money is a common practice. The Renaissance brought about the acceptance of interest in large numbers.
    Although interest is a common practice, it was considered a sin to charge interest on loans. This was according to social norms that date back to ancient Middle Eastern civilizations and Medieval times. This was partly because loans were given to those in need and no other product was created by the act of lending assets with interests.
    The Renaissance ended the moral dubiousness that interest was charged on loans. In an effort to improve their financial situation, people borrowed money to start businesses. Due to the increasing number of markets and relative economic mobility, loans became more common and more acceptable. This was when money was considered a commodity and it was thought that charging interest was worth the potential cost.
    In the 1800s, political philosophers explained the economic theory behind charging interest rates on lent money. These authors were Frederic Bastiat and Adam Smith.
    Interest rates are available for a variety of financial products, including mortgages and credit cards, car loans, and personal loan. In 2019, interest rates began to decline and were reduced to almost zero by 2020.

    Special Considerations

    Low-interest rates are designed to encourage economic growth and make it easier to borrow money. It is beneficial to those looking for homes because they have lower monthly payments and can afford more. The Federal Reserve lowers rates which means consumers have more money to spend in other areas and larger purchases such as houses. This environment is also good for banks because they can lend more money.
    Low-interest rates may not be ideal. High-interest rates are a sign that the economy is doing well and the economy is healthy. Low-interest rates can lead to lower returns on savings and investments, as well as a higher level of debt, which could increase the chance of default if rates rise again.
    Rule of 72 is a quick way to estimate how long it takes for interest-bearing accounts to double. Divide 72 by the applicable rate. For example, if you pay 4% interest, your investment will double in 18 years.

    Types Of Interest Rates

    There are many interest rates available, including rates for credit cards and auto loans. There are many interest rates available, including auto loans and credit cards.
    There are many factors that influence the average credit card interest rate. These include whether you have a business credit card, a reward card, or if you get cashback.
    The interest rate that you receive on various loans and credit lines will be influenced by your credit score.
    For those with low credit scores, the subprime market credit cards can have interest rates up to 25%. These cards are designed for people with poor credit and can be used to repair or build bad credit.

    Inflation Rate

    Inflation can be defined as an increase in prices over time. Inflation means that a fixed amount will be able to afford less in the long-term. Inflation has been around 3% in the United States over the past 100 years. For comparison, the S&P 500 (Standard & Poor's), index in the United States has an average annual return rate of around 10% over the same time period.
    Inflation and tax combined make it difficult to increase the real value of money. The average inflation rate in the United States is 3% and the marginal tax rate for the middle class is 25%. It is difficult to maintain the value of money by earning a stable interest rate, or an investment return rate, of at least 4%.
    Parmis Kazemi
    Article author
    Parmis Kazemi
    Parmis is a content creator who has a passion for writing and creating new things. She is also highly interested in tech and enjoys learning new things.
    Interest Calculator English
    Published: Thu Apr 21 2022
    In category Financial calculators
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