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11+interest-growth

Reinvesting interest

Explore why every naira of interest reinvested earns interest forever going forward.

In this lesson

Reinvesting interest is part of Make Money Work for You. This preview shows how interest-growth connects to everyday family decisions such as earning, saving, spending choices, goals, approvals, or parent-guided money conversations inside Progress Penguin.

Today’s money mission

Imagine this situation: Your savings earns 2000 in local currency interest in Year 1. Option A: withdraw it. Option B: leave it in.

What you need to know

Every naira of interest reinvested earns interest forever going forward. Withdrawn interest removes a permanent contributor from the compound machine. Over decades, this choice creates massive wealth differences.

Real-life example

Real-life money moment: 100000 in local currency at 10% for 10 years: if you withdraw all interest annually vs reinvest it all, what is the approximate difference in final value? — Withdraw interest: 100,000+(100,000×10%×10)=200,000 (simple interest). Reinvest: 100,000×(1.1)^10=259,374. Difference: 59,374. The entire compound advantage comes from reinvestment.

Progress Penguin connection

Open your savings history and find the line where interest was credited to your balance. Confirm that amount was added back to the balance total rather than being paid out separately. Interest added back to the balance means it will earn further interest next cycle.

Activity preview

Choose the best money move

Use what you just learned. Choose the option you can explain.

Practice adding money to savings

Open Requests and make a deposit request into savings so you can see how saving starts. Parent approval can happen later.

Quiz preview

To get compound benefits, you should:

Leave interest in account, let it grow
Withdraw monthly
Spend immediately
Wait until your balance is large enough to make compounding worth it

Your savings earns 2000 in local currency interest in Year 1. Option A: withdraw it. Option B: leave it in. In Year 2 at 10%, how much interest does each earn?

Both earn 2200 in local currency — the interest is the same regardless
Option A: 2000 in local currency again. Option B: 2200 in local currency — the reinvested 2000 in local currency itself earns 10%
Option A earns more — withdrawing and reinvesting is smarter
Option B earns 4000 in local currency — doubling the reinvested amount