We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

How much is needed in a Stocks and Shares ISA to target a £3,111 monthly passive income?

This FTSE hidden gem could deliver ultra-high returns over time in a Stocks and Shares ISA, but how much exactly could investors be looking at?

| More on:
Passive income text with pin graph chart on business table

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.

Given my economic objection to — and practical dislike of — high taxes, I use my full £20,000 Stocks and Shares ISA allowance with a near-religious fervour every year.

This is not only exempt from income and capital gains tax but also has no age-related restrictions on withdrawals. So, unlike private pensions, I could withdraw this ISA money anytime and in any amount with no tax penalties.

XXX

But what sort of returns am I targeting in my latest Stock and Shares ISA?

Please note that tax treatment depends on the individual circumstances of each client and may be subject to change in future. The content in this article is provided for information purposes only. It is not intended to be, nor does it constitute, any form of tax advice. Readers are responsible for carrying out their own due diligence and for obtaining professional advice before making any investment decisions.

A better return than the ‘risk-free rate’?

There is more risk involved in share investment than there is in investing in the UK 10-year government bond, known as the ‘risk-free rate’.

And currently, it delivers an annual yield of 5.1%, although the interest rate (coupon) on bonds — just like with shares — can go up and down over time.

Nevertheless, at the current rate with the returns compounded (reinvested into the bonds), I could make £13,270 after 10 years. And this would rise to £72,065 after 30 years. And at the end of that time, I could have a monthly income from the interest of around £306.

Incidentally, gilts can be included in a Stock and Shares ISA. So, it is a straight comparison of risk and reward.

What are the FTSE options here?

Happily, several shares in the FTSE 100 and FTSE 250 deliver much higher annual returns than this. One is the UK’s only integrated multi-utility provider, Telecom Plus (LSE: TEP).

It is best known for its Utility Warehouse brand, but what really sets it apart is its bundled‑services model. Instead of selling energy separately like traditional suppliers, it wraps broadband, mobile, insurance and home energy into a single package. That keeps customers loyal and cash flows steady.

A risk here is any slowdown in customer acquisition or partner recruitment that could weaken the growth model. Another would be rising wholesale energy or telecom costs that could squeeze its margins.

However, the company’s mix of essential, everyday services creates unusually strong recurring earnings. Indeed, analysts forecast these will rise by 9.8% a year on average over the medium term, at minimum. And this is exactly the kind of foundation that supports a dependable and rising dividend profile.

How much in dividends over time?

Telecom Plus’ dividend yield is forecast to hit 9.4% next year, 10% in 2028, and 10.6% in 2029.

So, a £20,000 holding in the firm on the projected 10.6% as an average (and including ‘dividend compounding’) could make £32,035 after 10 years. And after 30 years on the same basis, this dividend gain could rise to £332,226.

By that point, the holding’s total value could be £352,226. And that would deliver a monthly passive income (from dividends) of £3,111!

My investment view

My holdings in other telecoms and energy firms (BT, BP, Shell, Harbour Energy) preclude me from adding another in the same sector. To do so would unsettle my portfolio’s risk/reward balance.
Instead, I have my eye on other high-yielding stocks that also look cheap to me at their current price.

However, for investors considering it without this problem, I think Telecom Plus offers the rare mix of stability, growth and income that long‑term ISA investors often struggle to find.

Simon Watkins has positions in Bp P.l.c., Bt Group Plc, Harbour Energy Plc, and Shell Plc. 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

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »