With a 400% profit margin, Sirius Minerals is a dirt cheap future cash cow

Sirius Minerals plc (LON: SXX) could be the world’s most profitable mining company.

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.

Sirius Minerals (LSE: SXX) might not be everyone’s favourite company yet, but it’s hard to criticise the firm’s prospects. Its flagship North Yorkshire potash mine is a world-class asset, and now the company has planning permission and the financing in place to progress the development of this mine, the project is substantially de-risked.

Granted, there is still plenty that can go wrong. Mining and resource projects are notorious for running over budget and being delayed. Often this is due to factors completely out of management’s control such as poor weather or unforeseen development obstacles, and there’s no guarantee that Sirius will not succumb to one of these problems.

That being said, so far the company’s management has been highly efficient in executing the planning process for the mine and raising the required financing, which was no small accomplishment. The company has already raised $1.2bn from various partners, from shareholders and by debt, giving it plenty of firepower to progress the initial stages of the mine’s development.

As part of the fundraising process, management has moved Sirius’s shares from the Alternative Investment Market to the main market, a move that should allow more funds to buy into the group’s success story. Sirius needs to raise another $1.7bn to finish the construction of the potash mine, and the good news is, considering the prospective profit margins available here, the company should quite quickly be able to raise this additional finance.

Guaranteed profit

Sirius already has many agreements in place with companies around the world to buy its polyhalite (a premium version of potash that does more to boost crop yields than the basic version) at a price of $145 a tonne. Customers have agreed to buy 8.1m tonnes of the stuff every year at this price.

The good news for Sirius and its shareholders is that at $145 a tonne, the company is booking a gross profit margin of nearly 400% on estimated production costs of $30 a tonne. Based on these figures, Sirius already has contracts in place giving the company an initial $1.2bn in annual revenue.

To mine the required 8.1m tonnes, it would cost the company an estimated $243m at the price of $30 per tonne giving an estimated profit before depreciation, admin, interest and tax costs of just under $960m. Over the long term, the company is targeting production of 20m tonnes a year, giving an estimated profit of $2.4bn based on the above numbers.

Cash cow

These are just back-of-the-envelope estimates, but they show just how profitable Sirius could become. And even in the base case scenario of production of 8.1m tonnes per annum, the company could be a dividend champion.

Excluding the non-cash cost of depreciation, assuming a 5% interest bill on $3bn borrowing (an extremely pessimistic scenario) and that Sirius’s management can keep corporate admin costs to under $100m per annum, the company is on track to report an estimated net profit of around $500m, or £380m per year. This estimate implies an earnings yield of around 29% on the firm’s current market capitalisation of £1.3bn.

Rupert Hargreaves has no position in any 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

Lady wearing a head scarf looks over pages on company financials
Investing Articles

How to try and turn a small ISA into £250k, starting in 2026

With regular contributions and a sound investment strategy, it's possible to turn a small ISA into a huge amount of…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

Here’s how much passive income £10,000 worth of Legal & General shares could deliver in 2026

An investment in Legal & General is likely to deliver far more passive income than a high-interest savings account in…

Read more »

Investing Articles

3 potentially explosive penny stocks to consider buying for 2026

Edward Sheldon has scanned the market for penny stocks with significant investment potential as we start 2026. Here are three…

Read more »

Investing Articles

3 top stock market investment ideas for UK investors in 2026

In 2026, the stock market is likely to throw up plenty of lucrative opportunities for investors. Here are three investment…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

How to invest a Stocks and Shares ISA like a pro in 2026

The Stocks and Shares ISA is a powerful investment account. Here are some strategies used by professional investors to get…

Read more »

Investing Articles

£5,000 invested in BP shares could generate this much dividend income in 2026…

Andrew Mackie weighs up whether BP shares’ attractive dividend yield is reason enough for him to keep holding the stock…

Read more »

Investing Articles

In 2026, I think the FTSE 100 could pass 12,000

How could FTSE 100 replicate the success of 2025? Our Foolish author examines why the index might pass 12,000 in…

Read more »

Investing Articles

3 brilliant British shares to consider buying for 2026

If an investor is looking for shares to buy for 2026, they have plenty of great options whether the goal…

Read more »