ISA deadline alert! Time is running out to make the most of your allowance

Want to give as little back to the taxman as possible? Read this now.

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.

With March almost upon us, the end of the tax year is in sight. That means you only have just over one month to use up your full ISA allowance.

Here’s a reminder of why all at the Fool hold this kind of account in such esteem and why we think every investor should be making the most of them.

Use it or lose it

Let’s start with the basics. The two versions of the account that are probably most relevant for readers are the standard Stocks and Shares ISA and the Lifetime ISA (LISA).

Both are tax-free wrappers. In other words, any profits you make or dividends you receive from the investments you own are protected from the taxman in either account. Buy a stock for £1,000, sell it for £2,000 and whatever’s left over after fees is yours.

There are, however, also some key differences between these accounts. 

The maximum amount you can pay into an ISA is £20,000 in any one year. This allowance runs until April 5 and can’t be carried over. Contributions to the LISA count towards this limit (as does anything you put in a Cash ISA) but are capped at £4,000.

The extent to which you can get to your money also differs.

While there are no restrictions when it comes to retrieving your cash from a normal ISA, you can only access the money in the LISA when you reach 60 years of age or earlier if you wish to fund the purchase of your first home.

Assuming you’re not a first-time buyer, the LISA is therefore only something to be considered if you can leave your money well alone. As an incentive, whatever you feed into to this account over the year entitles you to a 25% bonus from the government. So, paying in the full £4,000 gets you an extra £1000 to invest as you please. Cash out early and you’ll be hit with a 25% penalty. 

Taking all this into account, it’s not hard to see why having at least one of these accounts is a no-brainer for the vast majority of investors looking to accumulate wealth.

Another thing worth doing within your ISA or LISA is taking advantage of regular investing plans. Rather than invest a lump sum all in one go, it can be psychologically easier (although not necessarily more profitable) to invest a fixed amount each month. This allows you to buy more of a particular share or fund when the price is low and less when the price is high, thereby smoothing out your returns. 

Depending on your ISA or LISA provider, using a monthly investment plan can also reduce buying costs by as much as 90%! As many experienced investors will attest, keeping a lid on costs can be just as important as the investments you choose. 

Every little helps

Over a long enough timeline, the full benefits of the ISA allowance really become apparent. Assuming you are able to invest the maximum £20,000 per year (and for simplicity’s sake, assuming the allowance does not change over the years), you’d have almost £2m after 30 years, assuming a return of 7% per annum.

Of course, very few of us are able to make the maximum contribution every year (if ever). Nevertheless, the more you can stash away in either account, the more you’ll benefit from compounding over time. 

Paul Summers 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

This way, That way, The other way - pointing in different directions
Investing For Beginners

1 FTSE 250 stock I like and 1 I’ll avoid after the stock market correction

Jon Smith analyses the move lower in certain FTSE 250 companies over the past month and picks one that looks…

Read more »

Playful senior couple in aprons dancing and smiling while preparing healthy dinner at home
Investing Articles

Is April 2026 a great time to buy Lloyds shares?

Lloyds shares have been flying over the last two years. And there's one factor that could mean the bank continues…

Read more »

Young mixed-race couple sat on the beach looking out over the sea
Investing Articles

Want to aim for a £500 second income each month? Here’s how much it takes

Christopher Ruane digs into the numbers and mechanics that could let someone with no shares today build an annual second…

Read more »

Aston Martin DBX - rear pic of trunk
Investing Articles

Down 95%, what might it take for the Aston Martin share price to rise 2,000%?

The Aston Martin share price has collapsed. Our writer considers what it might take for it to regain some ground…

Read more »

Investing Articles

How are Diageo shares looking in April 2026?

It's been an eventful year so far, but what has the impact been for Diageo shares, and where might they…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

P/Es below 7! 3 staggeringly cheap shares despite yesterday’s rally

Investors who fear they have missed their opportunity to buy cheap shares as the stock market recovers might want to…

Read more »

ISA coins
Investing Articles

Want to know what UK investors have been buying in their ISAs?

Looking for stock, trust, and fund ideas this April? Royston Wild discusses what Brits have been stuffing in their Stocks…

Read more »

Mature Caucasian woman sat at a table with coffee and laptop while making notes on paper
Investing Articles

Why aren’t people buying Greggs shares by the bucketload?

Greggs' shares remain in the doldrums. But should Foolish investors consider pouncing while others won't? Paul Summers takes a fresh…

Read more »