Investing in sustainable companies offers you the chance to make a long-term positive impact in the world while growing your wealth.
But what makes a company sustainable and how do you go about finding them?
Discover everything you need to know about investing in sustainable companies in our guide.
A sustainable company focuses on the impact it makes on people and the planet while generating a profit.
Some of the hallmarks of a sustainable company include (but certainly aren’t limited to:)
Environmental, Social and Governance (ESG) investing measures a company’s financial performance against the following themes:
ESG helps people make more informed decisions about the companies they invest in and their impact on the environment and society.
A growing number of people are trying to make a difference through their financial choices. For example, buying ethical investment funds, opening ethical bank accounts and savings accounts and being strategic about where they spend money.
Sustainable investing is important for helping to tackle present and forecasted challenges affecting our world today. This includes everything from climate change, pollution, to food security, human rights and global health.
At the same time, investing sustainably can help grow your wealth and generate a competitive return on your money.
Investing sustainably can generate profitable returns. According to investment firm Morgan Stanley, sustainable funds achieved a median performance of 4.7% more than traditional funds over a 5-year period in 2024. ESG assets are also predicted to hit a value of $40 trillion by 2030, according to Bloomberg Intelligence.
The chart below shows how our round up of the best ethical investment funds compare to traditional assets:
1. Decide your sustainability standards
Before getting started, take a moment to think about what type of sustainable company you want to invest in.
If you already have a checklist in mind – that’s great! But if you’re unsure, consider the following questions to help you make a mini checklist:
Having these factors in mind will help guide your decision-making process when looking at different organisations and whether you want to put your money into them.
2. Positive screening
Positive screening is when you choose to invest in companies that take active steps to benefit people and the environment. It’s sometimes referred to as “thematic” screening or “impact investing”.
The process of positive screening usually involves looking at a company’s environmental records, workplace practices, community work and whether they have been involved in any controversies.
This helps you get a better understanding of how a company operates and the type of impact it’s having in the world.
Through positive screening, you can select sustainable companies that align with your values. For example, if you wanted to focus on companies that produce materials for renewable energy.
Or perhaps, companies that invest in local social enterprises and community organisations.
3. Negative screening
Negative screening is when you avoid investing in certain companies that have a harmful impact on people and the planet. This process is also called “exclusion-based” screening or “socially responsible investing (SRI)”.
During the negative screening process, companies are filtered out if they are part of (or just associated with) industries that are considered unethical and unsustainable.
Some of the industries typically excluded through negative screening include:
4. Look for ESG ratings
Considering a company’s ESG credentials can also help you find sustainable businesses to invest in.
There are several organisations that measure how sustainable companies are, by using ESG standards.
They award each company an ESG rating or score. One thing to point out is that each rating system is unique.
That means some scores may be out of 100 while others use a letter-grading or star-rating method.
Usually, a higher ESG rating means that a company is very sustainable. However, lower ESG ratings suggest that a company is less sustainable and has room for improvement.
Providers such as Sustainalytics, LSEG (previously Refinitiv) and S&P Global offer access to ESG ratings for free. All you’ll need to do is pop the company’s name into their search feature.
MSCI, Bloomberg and Morningstar also offer comprehensive ESG ratings and analysis for a fee.
Remember, a company’s ESG rating should form part of your complete analysis of how suitable a company is to invest in. It’s also important to do your own research into its performance to ensure it’s suitable for your portfolio.
5. Beware of “greenwashing”
Some companies invest a lot of money into creating the illusion that they’re more sustainable than they really are – this is called “greenwashing.”
They usually use vague terms such as “green,” “eco-friendly,” “sustainable,” “natural,” and “carbon offsetting” to market themselves as a sustainable option and boost their profits.
The only way to truly tell if a company is truly sustainable is by checking its policies and yearly reports. These should clearly explain their sustainability commitments and their impact on the planet.
Investing in sustainable companies is simple. All you’ll need to do is buy them through investment assets such as stocks and shares, funds and bonds.
To buy, sell or keep a hold of investment assets, you’ll need to open one of the following accounts:
GIA accounts don’t have an upper limit on how much you can invest. GIA’s don’t have any tax perks so may have to pay capital gains tax (CGT) or dividend tax if you earn profits over a certain amount. Try our GIA calculator to check how much an account might cost you.
A stocks and shares ISA lets you invest up to £20,000 each tax-free each tax year (which runs from 6 April to 5 April the following year). Check out our round up of the best stocks and shares ISAs for more.
A SIPP account allows you to invest for retirement. You can invest up to £60,000 tax-free into your pensions each year. Take a look at our best personal pensions and SIPPs guide to find out the top-rate providers available now.
If you’re looking to make a positive difference in the world, investing in sustainable companies is the way forward. As well as empowering organisations that benefit society and the environment, you could also stand to earn a notable return on your investment.
Some of the main reasons to consider investing in sustainable companies include:
Investing in sustainable companies can help drive beneficial innovation and change within society and for the environment. These companies have strict policies in place to protect their staff and ensure that they have a positive impact on the world.
Sustainable companies can allow you to invest in alignment with your personal values and help you fund organisations and initiatives that benefit society and the climate.
Sustainable companies may provide a strong return. In 2023, sustainable funds had a median return of 12.6% compared to an 8.6% return for traditional funds, according to Morningstar. It’s important to note that past performance doesn’t guarantee future profit, so wherever you decide to invest, always do your research.
Here are some tips to help you spot greenwashing and avoid being caught out:
Beware of vague language: general statements like “green,” “eco-friendly,” or “sustainable” don’t explain how a company operates and the steps it’s taking to be sustainable.
Try to find clear proof of a company’s environmental impact, social policies and business operations to get a better idea of whether they’re having a positive impact. These should be easily accessible on their website.
ometimes companies that target sustainability-minded customers and investors are owned by larger companies (or conglomerates) which have a damaging impact. Checking who a company is really owned by can help you determine whether it’s truly sustainable.
Carbon-offsetting is when a company tries to balance out its emissions by doing activities that are the equivalent of removing greenhouse gases from the atmosphere. (For example, planting trees.) Really scrutinise a company’s environmental records to help determine whether it fits your standards for sustainability. These should be made readily available on their website.