How I’d invest £300 a month in UK shares to target a £30,855 annual second income

Owning UK stocks can build substantial wealth for patient investors. Given enough time, mid-cap and even small-cap stocks can deliver big produce that can unlock an impressive income stream. Even for investors who can only put aside £300 a month, it is enough to make a double annual income of £30,855.

Invest for long-term growth

The most popular stock market index in the UK is FTSE 100. However, the FTSE 250 it may be more suitable for investors looking for growth. Why? Because the index contains almost exclusively medium- and small enterprises with significantly more growth potential than the stalwarts inside the British flagship index.

In fact, since its inception in 1992, UK shares in the FTSE 250 have returned a total annual average of 10.6%. And even after a drop of almost 20% in 2022. By comparison, the total annual return of the FTSE 100 over the same period was closer to 7.1%.

Let’s assume the index continues to return this average for the next 30 years. What would a monthly investment of £300 be?

Needless to say, a 3.5% difference in returns, compounded over three decades, has a big impact. And by following the 4% withdrawal rule, a portfolio worth £771,396 would give you an annual income of £30,885.84.

UK shares can be volatile

As exciting as the prospect of earning £31k for doing nothing is, there are some risk factors to consider. The higher returns of the FTSE 250 are not without risk. As I mentioned earlier, indexes can be volatile.

With the instability of the economy rising thanks to expanding inflation, many UK shares were pummeled to the ground last year. And the majority are medium and small stocks. Why? Because these smaller companies usually have fewer resources to deal with a poor operating environment. On the other hand, large-cap stocks can use their size to weather these storms and are usually more resilient.

Nothing paints this picture more clearly than comparing the performance of the FTSE 250 with the FTSE 100 in 2022. The former lost almost a quarter of its value, while the latter ended the year last.

Stock market declines are rare. But they can damage the wealth building process. As such, average returns over the next 30 years are likely to be lower than historically achieved. In other words, investors will have to wait longer to achieve the desired income milestones.

Bottom line

Buying UK shares is far from a risk-free venture. However, as he points out, it can unlock vast wealth and accelerate your journey to financial independence. That, in my opinion, makes this risk worth taking.