These are my best shares to buy in an ISA for 2026!

Zaven Boyrazian has invested almost £10,000 in two companies he believes are among the best shares to buy now. Here’s why.

| More on:
Finger clicking a button marked 'Buy' on a keyboard

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.

With 2025 coming to a close, I’m on the prowl for the best shares to buy for 2026. And I’ve already spotted two US businesses that look strong contenders. So much so that I’ve already invested just shy of £10,000 over the last three months.

A rising fintech

First on the list is Toast (NYSE:TOST). The firm offers a complete restaurant operating system, solving the headaches of digital ordering, reservations, marketing, supply chain management, payroll, accounting, analytics, and even financing.

This all-in-one solution is already deployed at over 156,000 locations with 22,000 added since the start of 2025. And with adoption accelerating, its latest third-quarter results showed 30% revenue expansion, a 147% operating profit surge, and an upgrade to full-year guidance.

Despite this record performance, the shares are actually down by around 8% since the start of the year. Why?

The fear is that with pressure rising on everyday American households, restaurant trips could be cut back. And since Toast makes the bulk of its money by charging a small transaction fee on each order, that signals a potential slowdown.

It’s a valid concern. But it might be overstated.

Even if footfall waivers, the added cost-saving benefits of deploying Toast could turn this into an adoption tailwind, resulting in further location growth offsetting the impact on earnings. That obviously isn’t guaranteed, but at a forward price-to-earnings (P/E) ratio of 27, it’s a risk I’m willing to take.

Getting more exotic

The second stock I’ve been buying is a bit more volatile – Sezzle (NASDAQ:SEZL). Unlike Toast, Sezzle’s been a strong performer in 2025, rising by 20% since the start of the year. Yet at one point, it was up over 300%!

The Buy Now, Pay Later (BNPL) platform has grown dramatically over the last 12 months, sparking over-enthusiasm that eventually tumbled back to reality. But then the shares kept falling. And now the stock trades at a dirt cheap forward P/E of just 12.8.

Yet once again, the share price doesn’t align with the fundamentals.

Thanks to its subscription-based approach to BNPL, Sezzle has the highest operating profit margins in the industry at 30%. And in its latest results, revenue skyrocketed by 67% paired with a 71% jump in earnings, driven a 53% surge in transactions to 9.5 million during the quarter.

So why’s the market pricing this stock so cheaply? Again, the answer lies in macroeconomics. A weaker US consumer increases the credit risk of Sezzle users not keeping up with payments. And the group’s provisions for credit losses did tick up slightly – a potential early warning sign that this has already started to happen.

However, this uptick seems to be a seasonal shift rather than a structural one. In fact, management actually lowered its credit loss provision guidance for 2025, indicating confidence in the quality of its credit. And if market conditions turn out to be better than investors are expecting, a rebound could emerge.

The bottom line

Out of these stocks, Sezzle’s definitely the riskier investment. But in my opinion, both look like underdogs that could thrive in 2026 once economic conditions stabilise. That’s why I think investors hunting for shares to buy may want to take a closer look at these under-the-radar opportunities. Yet, these aren’t the only shares I’ve been buying lately.

Zaven Boyrazian has positions in Sezzle and Toast. The Motley Fool UK has recommended Toast. 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

Investing Articles

Looking for shares to buy as precious metals surge? 3 things to remember!

Gold prices have been on a tear. So has silver. So why isn't this writer hunting for shares to buy…

Read more »

British Pennies on a Pound Note
Investing Articles

Up 27% in 2025, might this penny share still be a long-term bargain?

Christopher Ruane's happy that this penny share he owns has done well in 2025. But it's still cheaper now than…

Read more »

Two employees sat at desk welcoming customer to a Tesla car showroom
Investing Articles

Here’s what a single share of Tesla stock cost in January – and what it’s worth now!

Tesla stock's moved up this year -- and it's had a wild ride along the way. Christopher Ruane explains why…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Rolls-Royce shares have done it again in 2025! But could the party be over?

2025's been another storming year for Rolls-Royce shares -- and this writer missed out! Might it still be worth him…

Read more »

Businessman with tablet, waiting at the train station platform
Investing Articles

Is this the last chance to buy these FTSE 100 shares on the cheap?

Diageo and Barratt Redrow's share prices have tanked. Is this the opportunity investors seeking cheap FTSE 100 shares have been…

Read more »

Young mixed-race woman jumping for joy in a park with confetti falling around her
Investing Articles

Legal & General shares yield a staggering 8.7% – will they shower investors with income in 2026?

Legal & General shares pay the highest dividend yield on the entire FTSE 100. Harvey Jones asks whether there is…

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

With its 16% dividend yield, is it time for me to buy this FTSE 250 passive income star?

Ithaca Energy’s 16% dividend yield looks irresistible -- but with tax headwinds still blowing strong, can this FTSE 250 passive…

Read more »

Hand of person putting wood cube block with word VALUE on wooden table
Investing Articles

Under £27 now, Shell’s share price looks a huge bargain – here’s why

Shell’s share price is at a major discount to its peers, but Simon Watkins believes it won’t do so for…

Read more »