Building a £100k ISA from scratch

Edward Sheldon shows how it’s possible to build up a six-figure ISA in less than 10 years by saving regularly and investing in the stock market.

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.

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.

Young black woman walking in Central London for shopping

Image source: Getty Images

Building up £100k in an ISA is a common goal. With that kind of money, one has a lot of options financially.

The good news is that with a long-term perspective, a regular savings plan, and a sound investment strategy, it’s definitely achievable. With that in mind, here’s how I’d aim to build a six-figure ISA from scratch today.

Opening the right type of ISA

If I was just starting my wealth-building journey today, and my goal was to build up £100k, I’d start by opening a Stocks and Shares ISA, and maybe also a Lifetime ISA if I was under 40.

The advantage of these ISAs is that they offer access to a wide range of investments including stocks, funds, exchange-traded funds (ETFs), and investment trusts. This means they could help me grow my money much faster than a Cash ISA could.

Meanwhile, contributions into a Lifetime ISA come with a 25% bonus from the government, which again, could help me grow my wealth faster.

Making regular contributions

Once my ISA was open, I’d start a regular savings plan.

Here, I’d work out how much I could afford to contribute to my account every month. And then I’d pay in this amount as soon as I was paid.

This approach would help me save consistently. Even if I was only able to save a little bit of money every month, it would add up over time.

Investing in the stock market

Finally, I would put my money to work by investing it in the stock market. Over the long term, the stock market tends to outperform other assets such as bonds and cash savings.

Now, there are many different approaches to investing I could pursue.

I could invest in index funds such as Vanguard’s FTSE Global All Cap Index. This is a diversified product that provides exposure to over 7,000 stocks globally for a low fee.

Or, I could invest in actively-managed funds such as Fundsmith Equity and Lindsell Train UK Equity. These products are managed by portfolio managers, who try to outperform the market.

Alternatively, I could invest in individual stocks. This approach is higher risk but the potential rewards are greater.

For example, had I invested $5k in Apple shares 10 years ago, I’d now have about $50k (not including dividends). There are unlikely to be many funds that have produced that kind of return for investors over the last decade.

Personally, I’d use a mix of all three approaches. This would lower my overall risk while also giving me the chance to generate high returns.

Hitting £100k

How long would it take me to hit £100k with this approach?

Well, that would depend on my level of contributions and the returns I was able to generate from the stock market.

However, as an example, if I contributed £600 a month into my ISA and generated a return of 9% per year on my money over the long term, I’d hit the £100k mark in less than 10 years.

Edward Sheldon has positions in Apple and Fundsmith Equity. The Motley Fool UK has recommended Apple. 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

Transparent umbrella under heavy rain against water drops splash background.
Investing Articles

How a SIPP can save your retirement from an insufficient UK State Pension

I don’t know about you, but I’ll need more than a grand a month to get by in retirement. That’s…

Read more »

Light bulb with growing tree.
Investing Articles

Here’s how this overlooked 6.5p penny stock could turn £5,000 in an ISA into £11,077

City analysts have been carefully scrutinising this depressed UK penny stock, and their price target suggests they like what they…

Read more »

Light bulb with growing tree.
Investing Articles

Dividend stocks: here’s my top name to consider buying in May

When it comes to dividend stocks for May, Stephen Wright is looking past the high yields at a FTSE 100…

Read more »

Business manager working at a pub doing the accountancy and some paperwork using a laptop computer
Investing Articles

£7,007 invested in Aston Martin shares 1 week ago is now worth…

Aston Martin shares have put on a spurt lately but they're still down 27% in the last year. Harvey Jones…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

£20,000 invested in Tesco shares 3 years ago is now worth…

Tesco shares have already delivered huge gains, but analysts think the story may not be over. Could today’s price still…

Read more »

DIVIDEND YIELD text written on a notebook with chart
Investing Articles

Here’s how I’m targeting £13,534 in yearly passive income from £20,000 in this FTSE financial star

This FTSE opportunity could hand investors major passive income, yet the market still seems to be overlooking just how much…

Read more »

Investing Articles

With BP shares boosted by Q1 results, how much higher can they go?

A big jump in profit in the first quarter put BP shares among the FTSE 100's upwards movers, with the…

Read more »

Three generation family are playing football together in a field. There are two boys, their father and their grandfather.
Investing Articles

How many Standard Life shares must an investor buy to give up work and live off the income?

Standard Life shares could be hiding one of the market’s most powerful long-term income engines — and the latest numbers…

Read more »