Missed the ISA deadline? It’s not too late to start saving

It makes sense to start putting money in your ISA as soon as possible.

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.

The deadline for ISA contributions for the 2017/18 tax year has passed, but if you missed the cut-off, there’s no reason to worry.

The ISA allowance is a recurring one, and it refreshes at 00:00 every year on April 6. So if you forgot to make the most of your £20,000 allowance last tax year, you have 355 days left to take advantage of the benefit for this year.

And while that may seem like plenty of time to get your affairs in order, it is always best to start putting money aside as soon as possible.

Time to start saving 

ISAs are a wonderful savings tool for investors of all shapes and experiences. Any investments held inside an ISA wrapper are tax-free — for both income and capital gains. In fact, you don’t even need to declare your ISA on your tax return.

With this being the case, it makes a lot of sense to start using up your ISA allowance as soon as possible. Even if you don’t believe you will benefit from the ISA’s beneficial tax status, it makes sense to use one because you don’t know what the future holds and they are flexible. You can take money out from prior years at any time, unlike pensions.

For example, if you used an ISA to invest £3,000 in a high growth stock today, and the value of this asset had grown to £30,000 by 2020, you could sell with no tax. However, if you made this investment outside the ISA wrapper, you will have to tell the taxman about your £27,000 profit and pay capital gains tax on the total (the rate of which depends on your income tax bracket). This could be as much as £3,050 for a higher rate taxpayer.

Put simply, it makes sense to start saving as much as possible into an ISA as soon as possible to make the most of its tax-free properties. The benefits might not seem apparent today, but they should have a significant impact on your wealth over time.

The power of tax-free compounding

As a rough example, if you invest £250 a month in a stock that pays a 5% dividend yield, assuming no capital growth and a basic dividend tax rate of 7.5% per annum, you will save £586,090 including dividend income of £436,090 over a period of five decades according to my calculations. 

However, the same investment without tax will grow to a total of £665,200 with total income earned of £515,200, £79,110 more than the taxed sum.

Using a shorter time frame example. If you earned a return of 5% over the 12-month period from April 6 2017, to April 5 2018, on a £20,000 investment you would have earned £1,000 just for investing early and not leaving it to the last minute.

The bottom line

So overall, if you missed out on last year’s ISA allowance, it makes a lot of financial sense to get a head start on this year’s quota. Not only should you be able to achieve higher after-tax returns, but saving earlier will help you plan out your finances throughout the year.

Rupert Hargreaves owns no share 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

Stack of one pound coins falling over
Investing Articles

Want to turn your ISA into a passive income machine? These 3 steps help

Christopher Ruane looks at a trio of factors he reckons could help an investor as they aim to earn passive…

Read more »

Investing For Beginners

2 FTSE shares that have been oversold in this stock market correction

Jon Smith reviews the recent market slump and points out a couple of FTSE shares he believes have been oversold…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

As the stock market moves down, I’m taking the Warren Buffett approach!

Rather than getting nervous as markets move around, our writer is looking to the career of Warren Buffett to see…

Read more »

Fans of Warren Buffett taking his photo
Investing Articles

Here’s how a stock market crash could be brilliant news for your retirement!

This writer isn't peering into a crystal ball trying to time the next stock market crash. Instead, he's making an…

Read more »

Burst your bubble thumbtack and balloon background
Investing Articles

Down 93%, should I load up on this penny stock while it’s under 1p?

The small-cap company behind this penny stock is eyeing up a substantial global market opportunity. So why did it crash…

Read more »

Portrait of pensive bearded senior looking on screen of laptop sitting at table with coffee cup.
Investing Articles

Is Fundsmith Equity still worth holding in a Stocks and Shares ISA or SIPP in 2026?

The performance of the Fundsmith Equity fund has been shocking over the last two years. Is it still smart to…

Read more »

Young female hand showing five fingers.
Investing Articles

5 smart moves to make before the 2025/2026 ISA deadline

Taking advantage of the annual allowance isn’t the only smart move to make before the upcoming ISA deadline, says Edward…

Read more »

Businesswoman calculating finances in an office
Investing Articles

Here’s the dividend forecast for Lloyds shares through to 2028

Can dividend forecasts tell investors much about the outlook for banking shares? Stephen Wright sets out what investors really need…

Read more »