£10,000-£15,000 of savings? Here’s how I’d aim for a second income worth £21,800!

Many of us invest for a second income. It’s the holy grail of investing. But how can we turn £10k-£15k into a significant passive income? Here’s how.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

Smiling white woman holding iPhone with Airpods in ear

Image source: Getty Images

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

Personally, I’d prefer to invest in stocks and shares for a second income rather than purchase a buy-to-let property or something similar.

Why’s that? Well, investing in the stock market is among the most passive ways to earn a second income.

I don’t need to worry about letting voids, or have to do any manual labour. It’s all about research and hitting the ‘buy’ and ‘sell’ buttons.

Moreover, there’s certainly capacity for much greater returns. In fact, I’ve been following a portfolio that’s up 75% over 18 months.

That’s clearly an extreme example of the success that investors can achieve. However, I stick by my original comment — it’s easier to make money from stocks, than houses.

Getting started

Embarking on an investment journey can feel daunting. However, I could start small and prioritise education.

After setting up an account with a major investment platform, the next step is setting clear financial goals and assessing my risk tolerance.

This involves defining what I aim to achieve through investments and understanding how much market volatility I am comfortable with.

Depending on my goals and risk exposure, I can explore various investment options, such as stocks, bonds, or funds, allowing me to diversify my portfolio and manage risk effectively.

As I gain experience and confidence, I can gradually adjust my strategy and increase my investment contributions, fostering a steady and informed approach to wealth-building.

Effective strategies

With £10,000-£15,000, I have a great starting point. It’s more than most Britons have in savings. So, how could I go about turning that into a second income?

Well, to start with, I’d need to build wealth. Unfortunately, the passive income I could generate from £10,000-£15,000 isn’t going to be life-changing, but with time, it could be.

Through the power of compounding, reinvesting even modest returns over time can significantly amplify wealth. In simple terms, to practice compounding I need to reinvest my returns year after year.

As the initial investment grows, so does its earning potential, fostering a gradual yet impactful financial transformation.

I may also be inclined to contribute monthly to help my portfolio grow. Take a look what happens if I could actualise 8% returns annually while contributing £100 a month — I’m using £12,500 as my starting figure.

After 30 years, I’d have almost £300,000. And with £300,000, I could generate around £21,800 a year in the 30th year.

Created at thecalculatorsite.com

Making wise choices

The only problem is, many novice investors lose money. And if I lose 50%, I’ve got to gain 100% to be back where I was.

The key is research. By thoroughly researching my investments and using platforms like The Motley Fool, I can make wiser investment decisions.

This may include practicing pound-cost-averaging or using a value investing approach. There’s certainly a lot to learn, but there are a host of resources to help me.

James Fox has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Mature black woman at home texting on her cell phone while sitting on the couch
Investing Articles

The FTSE 100 hits 10,000! What does this mean for investors?

The FTSE 100 -- the blue-chip stock index -- has reached an all-time high, representing a milestone for the supposedly…

Read more »

British coins and bank notes scattered on a surface
Investing Articles

How much do you need in an ISA for £2,026 passive income a month?

What kind of nest egg would an investor need for £2,026 monthly passive income? Our author crunches the numbers required…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Warren Buffett has retired. Could his investing approach still work today?

Warren Buffett has handed over the reins at Berkshire Hathaway. He's been investing for decades and the world has changed.…

Read more »

ISA coins
Investing Articles

Got a spare £20k for a Stocks and Shares ISA? Here’s how it could generate a £1,400 passive income in 2026!

A Stocks and Shares ISA can be a serious source of long-term passive income. Christopher Ruane explains more about this…

Read more »

Growth Shares

2 of the cheapest FTSE stocks to consider buying as we hit 2026

Jon Smith calls out a couple of FTSE companies that have fallen in the past year that he believes are…

Read more »

Tesla building with tesla logo and two teslas in front
Investing Articles

Why Tesla stock outperformed the S&P 500 — again — in 2025

As the Tesla share price shrugs off declining revenues and profits to climb 19%, what kind of further excitement will…

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

Thinking of investing in the stock market? Keep these basic rules in mind

Investing in the stock market can put investors on the fast track to building wealth and earning passive income. And…

Read more »

piggy bank, searching with binoculars
US Stock

This Dow Jones stock could be a dark horse outperformer for 2026

Jon Smith looks across the pond and spots a Dow Jones company that has fallen by 11% in the past…

Read more »