Good Money need to know: are digital banks still ethical?
As digital banks like Monzo, Revolut and Starling become profitable mainstream players, a bigger question is emerging: are their ethical and environmental promises keeping pace with their growth?
Some digital banks do have responsible policies, including restrictions on fossil fuels and other harmful sectors. But there is a difference between avoiding the worst and actively using customer money for good.
That is where transparency matters. The more clearly a bank shows where money goes, what it avoids and what positive impact it supports, the easier it is for customers to judge whether the ethics are real – or just part of the brand.
There’s a certain irony in the timing.
In a milestone moment for UK fintech, the UK’s biggest digital banks – Monzo, Revolut and Starling – are now reporting eye-catching profits.
But just as the numbers are turning to black, their environmental commitments are fading to grey.
Starling, once seen as one of the more ethical digital options, has quietly stepped back from its 2030 net zero commitments, saying it does not want to make promises it can’t keep.
So, as digital banks mature from challengers into profitable mainstream players, we ask the question – are there still any UK banks doing the right thing for people and planet as well as their profits?
UK digital banks turn profitable – at what cost?
Monzo has posted its first full year of profitability, with revenue reaching £1.7 billion and adjusted profit before tax of £172.6 million in its latest annual report. Starling has posted a fourth straight year of profitability, with profit before tax of £223 million, while Revolut continues to expand globally.
For investors, this is no doubt good news. Profitable banks are generally more stable, less reliant on venture capital, and better positioned to invest in services.
For customers, the picture is more complicated. Profitability does not happen in a vacuum. It reflects choices about lending, investing, customer experience and, more generally, signals their priorities moving forward.
Starling’s update on its net zero strategy denotes a change in direction. The shift has been framed as pragmatic, an adjustment to ensure targets are realistic and aligned with the business.
Another way to read it is a familiar return to ‘traditional banking’ form – when financial performance improves, environmental ambition and purpose-driven values start to look negotiable and, potentially in the future, off the table altogether.
The key issue behind ethical banking
Banks do not just hold money. They shape the economy through what they choose to finance.
These profit-driven lending or investment decisions rarely align with climate goals; lending to the fossil fuel sector remains highly profitable and lessening or removing the ‘minimum standards’ widens the pool of eligible customers.
The trade-offs behind the scenes
Set against this backdrop, ethical banks like Triodos or Unity Trust offer a striking contrast. Read on for more detail on these two providers, or skip to our summary table to discover other ethical banking alternatives.
Triodos’ growth is quieter, steadier and more constrained than the digital banking giants’. But its purpose is also clearer – it is focused as much on delivering impact for society and the environment as it is on delivering profit.
Triodos says it has delivered more than £2.5 billion in lending to projects generating social and environmental impact since it opened in 1995. Its lending spans social housing, charities, healthcare providers, renewable energy, nature restoration and community projects. It also publishes details of the organisations it lends to through its Know Where Your Money Goes platform.
In 2025, Triodos Bank as a wider group reported €1.1 billion (£950 million) in business loan origination across its five transition themes and said it had already met its 2030 emissions target, with a 42 per cent reduction in greenhouse gas emissions compared with its 2020 baseline.
Is Triodos Bank an ethical alternative in the UK?
Triodos is one of the clearest ethical current account options in the UK.
Why we like Triodos:
- It actively chooses what not to finance, including fossil fuels and other harmful sectors.
- It publishes detailed information about where customers’ money is lent.
- It prioritises sectors like renewable energy, social housing, charities, healthcare, nature, community projects and sustainable business.
Triodos charges a £3 monthly fee which may put some customers off, especially when most digital current accounts are free. But for people who want a bank where the ethical position is central rather than on the sidelines, it remains one of the strongest choices.
Unity Trust Bank: impact-led savings and business banking
Unity Trust Bank, which offers savings and banking services to UK businesses, charities and other socially minded organisations, also recently issued its Impact Report.
Unity says it measures success in two ways: financial performance and social value. It reports that 43.2 per cent of lending was directed to organisations serving disadvantaged communities, while 736 homes and 21 communal spaces were supported to decarbonise. It also says every loan it funds is assessed not just for returns, but for the positive change it creates.
For customers who want their savings to support UK organisations with a social purpose, Unity is a clear alternative to conventional banking.
Other ethical banking options in the UK
| Bank / provider | Main ethical strength |
| Triodos Bank | Fully impact-led ethical bank |
| Unity Trust Bank | Social impact and community lending |
| Charity Bank | Lending to charities and social purpose organisations |
| Ecology Building Society | Sustainable housing and renovation focus |
| Nationwide | Mutual structure and relatively limited fossil fuel exposure |
There are other banks and building societies worth considering, depending on what you need.
- The Co-operative Bank remains one of the best-known mainstream ethical options, with a long-standing ethical policy and a clearer position on harmful sectors than many high street banks. Its merger with Coventry Building Society, which is a certified B Corp and a mutual, could strengthen its position as a more responsible mainstream banking option.
- Nationwide Building Society is more ‘relatively responsible’ than fully ethical, but its mutual structure, branch presence and limited fossil fuel exposure make it a stronger mainstream option than many of the big banks.
- Charity Bank lends to charities and social purpose organisations, making it a strong option for savers who want their money to support positive impact.
- Ecology Building Society specialises in mortgages for energy-efficient homes, renovation projects and sustainable buildings, as well as offering a range of cash savings accounts. Like Triodos and Unity Trust, it is also a Good Egg company.
- Reliance Bank has a social purpose focus and lends to charities, churches and mission-led organisations.
- Gatehouse Bank offers Shariah-compliant savings and home finance, and has developed ESG and climate policies.
Together, these options show there are still several UK banks and building societies that pass at least some parts of the Good Money Test.
How ethical is Monzo?
Given Starling’s reported review of its climate targets, we are often asked: how ethical is Monzo?
Monzo does have some responsible policies. It says it does not invest in fossil-fuel based energy companies, arms companies or tobacco companies. It also says the majority of customer deposits are held at central banks, while its investments are limited to high-quality government and quasi-government bonds, such as development banks.
Monzo also says it lends out a relatively small proportion of deposits – currently 3.5 per cent – through unsecured personal overdrafts and loans.
That is a better position than many mainstream banks with significant fossil fuel exposure. But it is not the same as being impact-led.
The main issue is transparency. Monzo tells customers what it avoids and gives some information about where deposits are held, which is welcome. But it does not publish the same level of detail on where customer money goes, what positive impact it supports, or how its lending and wider business activity align with social and environmental goals.
So Monzo may be a reasonable option for customers who want a low-cost digital bank with some responsible policies. But if your priority is knowing your money is actively supporting people and planet, there are stronger choices.
What does the Good Money Test tell us?
The Good Money Test is not about expecting perfection. It is about asking better questions.
Where does your money go? Can you see what is happening to it? Is it doing any good? Are customers treated fairly? And do the actions back up the claims?
On that basis, the difference between digital banks and ethical banks becomes clearer.
Monzo and Starling may avoid some harmful sectors, but they are not primarily designed around positive impact. Triodos, Unity Trust, Charity Bank and Ecology Building Society are.
There is a clear contrast in how banks approach success. One version of success is rapid growth, global ambition, strong profits and slick digital services, with ethics sitting somewhere in the background.
Another is slower growth, fewer headline-grabbing features and less mainstream appeal, but a much bolder commitment to using money for good.
Perhaps one day there will be a truly scalable, ethical digital bank. For now, customers still have a choice to make.
You can vote with your head, your heart and your current account.
FAQ: ethical digital banking in the UK
Are digital banks like Monzo and Starling ethical?
Some digital banks have responsible policies and may avoid certain harmful sectors, but that is not necessarily the same as being fully impact-led or ethical.
What is the difference between an ethical bank and a digital bank?
An ethical bank is designed around social and environmental impact as well as profit. A digital bank primarily focuses on technology, customer experience and growth, although some may also introduce sustainability policies.
Which UK banks are considered the most ethical?
The most commonly cited ethical banking options in the UK currently include Triodos Bank, Unity Trust Bank, Charity Bank and Ecology Building Society.
Why does transparency matter in ethical banking?
Transparency helps customers understand where their money is going, what sectors are being financed and whether a bank’s actions align with its public claims.
