•

Updated Mar 16, 2026

•

1 page

How Banks Calculate Savings Interest: Easy Interest Tips for Kids

Nifemi Ilori

@nifemiilori_vflp

This document explains how to calculate simple interest on savings... Show more

# calculatings

# Sample

Nifemi Ilori 8P

intrest...

Simple interest is
calculated on a yearly basis (annually) and depends
on the interes

Understanding Simple Interest

Simple interest is a method used to calculate the amount of interest earned on savings or paid on loans. It is based on the principal amount, interest rate, and time period.

Definition: Simple interest is calculated on a yearly basis (annually) and depends on the interest rate, which is often given per annum (per year).

When you deposit money into a bank or building society, you earn interest on your savings. Conversely, if you borrow money for a mortgage or other loan, you have to pay interest to the lender.

Example: Sally deposits £600 into an account with an interest rate of 5% per annum. To calculate the interest she receives in one year:

Interest = 5% of £600
5/100 × 600 = £30

Therefore, Sally earns £30 in interest after one year.

To find out how much money Sally has in her account after one year:

New Balance = Original Deposit + Interest
New Balance = £600 + £30 = £630

Highlight: After one year, Sally will have £630 in her account.

The document also provides a practice question to reinforce the concept:

Example: Jamie's bank account pays interest at a rate of 4.3% per year. If he puts £850 into his account, how much will Jamie have after a year?

To solve this problem, you would:

Calculate the interest: 4.3% of £850
Add the interest to the original deposit

Vocabulary:

Principal: The original amount of money deposited or borrowed.

Interest Rate: The percentage charged or earned on the principal amount.

Per Annum: Latin for "per year," often used in financial contexts.

Understanding simple interest is crucial for managing personal finances effectively. It allows you to calculate potential earnings on savings or costs on loans accurately. This knowledge can help you make informed decisions about where to save your money or how to manage your debts.

Highlight: For those looking to maximize their savings, using a simple interest calculator or compound interest calculator can help compare different savings options. Many online tools, such as a simple interest calculator monthly or a bank interest calculator, can assist in these calculations.

Remember that while simple interest is straightforward to calculate, many financial products use compound interest, which can result in higher returns on savings or higher costs on loans over time. Always check whether an account or loan uses simple or compound interest when making financial decisions.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Most popular content

An Inspector Calls: Character Insights

Explore in-depth analysis and key quotes for characters in J.B. Priestley's 'An Inspector Calls'. This resource covers Gerald Croft, Inspector Goole, Sheila Birling, Mrs. Birling, Eric Birling, and Eva Smith, focusing on themes of class, gender roles, and social responsibility. Ideal for students aiming for Grade 8 and above.

English Literature

Sociology of Education Overview

Explore comprehensive A-Level Sociology notes on the education system, covering key theories, policies, and sociological perspectives. This resource includes insights on marketisation, gender roles, cultural deprivation, and educational inequalities, providing a thorough understanding of how education shapes social stratification and individual achievement. Ideal for exam preparation and in-depth study.

Sociology

Comprehensive Crime & Deviance Overview

Explore an extensive revision of crime and deviance topics, including theories, types of crime, and the impact of media. This resource covers key concepts such as Marxism, functionalism, gender and crime, and the influence of globalization on criminal behavior. Ideal for students seeking a thorough understanding of criminology and its various theories. Type: Full Topic Revision.

Sociology

Sociology of Families: Comprehensive Revision

Dive into an extensive overview of family dynamics, perspectives, and patterns in sociology. This resource covers key concepts such as family diversity, gender roles, marriage, and the impact of social policies on family structures. Perfect for A-Level Sociology students preparing for Paper 2.

Sociology

WJEC Unit 4 Criminology

Criminology unit 4 detailed revision note

Criminology

aqa higher tier combined science - biology b1 : cell biology, paper 1

b1: cell biology - paper 1

Biology

Criminology: Crime & Punishment Overview

Comprehensive mindmaps covering key concepts in the Crime and Punishment topic for WJEC Criminology Unit 4. This resource includes detailed insights into the Criminal Justice System, crime prevention strategies, sentencing models, and the roles of various agencies. Ideal for A-Level revision, ensuring you grasp essential theories and legislative processes to excel in your exams.

Criminology

Macbeth: Guilt and Ambition

Explore the complex themes of guilt and ambition in Shakespeare's 'Macbeth'. This analysis covers key characters, including Macbeth and Lady Macbeth, their moral dilemmas, and the tragic consequences of their ambition. Ideal for students studying character motivations, thematic elements, and the psychological impact of power. Includes insights on the natural order, manipulation, and the descent into madness.

English Literature

AQA Biology: Key Concepts

Explore essential AQA Biology topics including Photosynthesis, Respiration, Homeostasis, Genetics, and Ecology. This comprehensive knowledge organizer covers key concepts such as energy transfer, hormonal control, and genetic variation, providing a solid foundation for your studies. Ideal for exam preparation and understanding biological processes.

Biology

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5

App Store

4.7/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

Stefan S

iOS user

Samantha Klich

Android user

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Basil

Android user

David K

iOS user

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

Rohan U

Android user

Xander S

iOS user

Elisha

iOS user

Paul T

iOS user

Maths

•

317

•

Updated Mar 16, 2026

•

1 page

How Banks Calculate Savings Interest: Easy Interest Tips for Kids

Nifemi Ilori

@nifemiilori_vflp

This document explains how to calculate simple interest on savings accounts and loans. It covers the basic concept of interest rates and provides examples of interest calculations.

Simple interest is calculated annually based on the interest rate, typically expressed as... Show more

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Understanding Simple Interest

Simple interest is a method used to calculate the amount of interest earned on savings or paid on loans. It is based on the principal amount, interest rate, and time period.

Definition: Simple interest is calculated on a yearly basis (annually) and depends on the interest rate, which is often given per annum (per year).

When you deposit money into a bank or building society, you earn interest on your savings. Conversely, if you borrow money for a mortgage or other loan, you have to pay interest to the lender.

Example: Sally deposits £600 into an account with an interest rate of 5% per annum. To calculate the interest she receives in one year:

Interest = 5% of £600
5/100 × 600 = £30

Therefore, Sally earns £30 in interest after one year.

To find out how much money Sally has in her account after one year:

New Balance = Original Deposit + Interest
New Balance = £600 + £30 = £630

Highlight: After one year, Sally will have £630 in her account.

The document also provides a practice question to reinforce the concept:

Example: Jamie's bank account pays interest at a rate of 4.3% per year. If he puts £850 into his account, how much will Jamie have after a year?

To solve this problem, you would:

Calculate the interest: 4.3% of £850
Add the interest to the original deposit

Vocabulary:

Principal: The original amount of money deposited or borrowed.

Interest Rate: The percentage charged or earned on the principal amount.

Per Annum: Latin for "per year," often used in financial contexts.

Highlight: For those looking to maximize their savings, using a simple interest calculator or compound interest calculator can help compare different savings options. Many online tools, such as a simple interest calculator monthly or a bank interest calculator, can assist in these calculations.