Ethical and sustainable ISAs

An ethical or sustainable ISA is an ordinary ISA with a stated social or environmental purpose attached. The tax wrapper, the annual allowance and the protection rules are exactly the same as for any other ISA; what differs is what the provider says it does with your money, or alongside it. Two kinds dominate the UK market: cash ISAs from community and ethical banks, where the selling point is where the deposits are lent, and "woodland" cash ISAs, where the provider plants a tree for each account opened¹.

The ethical cash ISA described in the sources for this page is an instant access account from a community bank, opened online, with a dividend decided by the provider's board each October¹. The woodland alternative is a range of fixed term cash ISAs from Gatehouse Bank, which states that for every account opened or renewed it will plant a tree in a certified UK woodland project, at no cost to the customer³. Neither is a different species of ISA: both are cash ISAs under the standard rules, and both count towards the same £20,000 annual allowance⁴.

What the labels do not guarantee is performance. An ethical cash ISA pays a dividend set by the provider's board rather than a rate fixed in advance, and a woodland ISA fixes a rate for a term in the usual way. The environmental or ethical feature is a claim by the provider, and this page sets out what each provider says, what independent verification exists, and where the ordinary ISA rules still apply regardless of the label.

What makes an ISA "ethical" or "green"

There is no regulatory definition of an ethical, sustainable or green ISA. The words describe a provider's own claims about how it uses deposits or how it operates, and the substance varies a great deal between accounts. In the cases covered here, the claims are concrete and checkable: a community bank describing where savers' money is lent within its community, and a bank attaching a verified tree-planting scheme to its savings accounts¹.

The strongest verification in this market comes from the woodland side. Gatehouse Bank states that all the woodland projects in its tree planting scheme are registered on the UK Land Carbon Registry and independently verified under the UK Government's Woodland Carbon Code, which the provider says ensures the right trees are planted in the right places². That is an external, government-backed standard rather than a marketing label, and it is what separates a verified scheme from a simple promise to plant trees.

On the ethical lending side, the claims rest on the provider's own description of its business. Wessex Community Bank presents its ethical cash ISA as savings that support lending in its community, and states that deposits are protected under the Financial Services Compensation Scheme⁵. A saver weighing this kind of account is relying on the provider's account of its own lending, so it is worth reading the provider's product page and terms before opening, and treating words like "ethical", "green" and "sustainable" as descriptions to be checked rather than guarantees.

None of these features changes the tax position. Interest or returns inside any ISA are tax free under the standard ISA rules, and an ethical cash ISA is a cash ISA for every regulatory purpose. The label tells you about the provider's stated purpose, not about the rate you will earn or the protection you receive.

The ethical cash ISA: how it works day to day

The ethical cash ISA is an online account. You open it through the provider's website, and once it is running you manage it online, by telephone or through the provider's app¹. There is no branch network to visit, which is typical of community banks, and the account is designed to be operated remotely.

The return works differently from most cash ISAs. Instead of a published interest rate, the account pays a dividend, decided by the provider's Board of Directors annually in October and normally paid out in the same month¹. The practical consequence is that you will not know the exact return before the board announces it, and the dividend can change each year. This structure is common among mutual and community banks, where profits are shared with members rather than paid to external shareholders.

Because the dividend is set annually, the account suits savers who are comfortable without a guaranteed rate in advance. A saver who wants to know exactly what they will earn, and for how long, would generally look at a fixed rate cash ISA instead, where the rate is set at the outset for a fixed term. The trade-off is access: fixed term accounts usually restrict withdrawals, while the ethical cash ISA allows them at any time.

The account is a cash ISA in every other respect. It counts towards your annual ISA allowance, it can be transferred to another provider, and the money in it is protected by the Financial Services Compensation Scheme up to the limits described later on this page⁵.

Taking money out: instant access, but not a flexible ISA

The ethical cash ISA is a same day instant access account. You can take money out at any time by making a transfer online, by telephone or through the provider's app¹. There is no notice period and no withdrawal charge.

What the account is not, is a flexible ISA. The provider states plainly: "This ISA isn't flexible."¹ The distinction matters for how you use the account. In a flexible ISA, money you withdraw and later put back does not use up any more of your annual allowance. In a non-flexible ISA like this one, any money you pay back in counts as a fresh subscription, so it eats into your remaining allowance for the tax year.

This is not unusual. Other providers' easy access cash ISAs take the same position: Loughborough Building Society's Instant Access Cash ISA states "This is not a Flexible ISA"⁶, and Hampshire Trust Bank's Online Easy Access Cash ISA allows unlimited withdrawals at any time but is not a flexible ISA, so withdrawn money cannot be replaced without using more of that year's allowance⁷. Skipton Building Society's general guidance on cash ISAs likewise describes easy access accounts where you can withdraw anytime⁸.

In practice, the rule to remember is simple: take money out whenever you need it, but if you plan to put it back, check first how much allowance you have left for the tax year. Once the year ends, unused allowance is gone for good, and the withdrawal you made cannot be reversed into the old year's allowance. The dedicated page on taking money out of an ISA covers the wider rules.

The £20,000 allowance still applies

The annual ISA allowance is £20,000 per tax year, and the Treasury confirmed in its December 2025 policy statement that "the annual ISA allowance will be kept at £20,000"⁴. The ethical cash ISA provider states the same figure for the current tax year⁵. That £20,000 covers everything you pay into ISAs in the tax year across all your ISAs combined, not per account.

The allowance has been the subject of live policy debate, which is worth knowing about if you are deciding how much to commit. The Building Societies Association warned in October 2025 about proposals that included "a cut in the annual Cash ISA limit from £20,000 to £5,000"⁹, while the stocks and shares ISA limit was reported as remaining at £20,000¹⁰. The dedicated page on changes to the cash ISA limit tracks where those proposals stand.

For an ethical cash ISA saver, the practical points are these. First, the £20,000 is a payment limit, not a balance limit: interest or dividends credited inside the ISA do not use allowance, only money you pay in. Second, if you pay into more than one ISA in the same tax year, the combined payments must not exceed £20,000¹¹. Third, the allowance does not roll over: whatever you do not use by the end of the tax year is lost. The full rules are on the ISA allowance page.

Moving an existing ISA into an ethical one

You can move money from another ISA into an ethical cash ISA by filling out a transfer form with the new provider¹. The critical rule is to use the official transfer process rather than withdrawing the cash yourself: existing ISAs can be moved without losing their tax-free status only if the transfer is done between providers⁸. Withdraw the money into a normal account first and you cannot simply pay it back in beyond your current year's allowance.

Transfers are not limited to cash-to-cash. HMRC's June 2026 tax-free savings newsletter confirms that "It will remain possible to transfer from a cash ISA to a non-cash ISA."¹² So a saver with a stocks and shares ISA could move it into an ethical cash ISA, or the other way round, and the money keeps its ISA status either way. Which? notes the same flexibility for innovative finance ISAs: money already in a cash ISA or stocks and shares ISA can be transferred to an innovative finance ISA offered by a peer-to-peer provider¹³.

The process itself is handled between the providers once you have signed the form, and the page on how to transfer an ISA covers the timescales and what to do if a transfer is delayed. If you are moving only part of an older ISA, that is allowed too: partial transfers are a matter for the providers involved. Transfers of money already inside an ISA do not use up your current year's allowance, which is set out on the transfer and allowance page.

Fixed-term woodland ISAs that plant a tree for each account

The other main type of ethical cash ISA works quite differently. Gatehouse Bank's range of Fixed Term Woodland Cash ISAs are fixed rate accounts, and the key product information for the 3 Year Fixed Term Woodland Cash ISA states: "For every account you open or renew, we will plant a tree in a certified UK woodland project on your behalf, at no cost"³. The tree is attached to the account itself, so a renewal counts again.

Because these are fixed term accounts, the usual fixed rate cash ISA rules apply. You deposit a sum, the rate is fixed for the term, and access during the term is restricted: the terms for these accounts include a profit reduction for withdrawals during the fixed period. That is the trade-off for certainty: unlike the ethical cash ISA's annually decided dividend, a fixed term woodland ISA tells you the expected profit rate at the outset and holds it for the term.

The tree planting is a feature of the account, not a product in itself. The money is a normal cash deposit with the bank, protected in the normal way, and the woodland element is what the provider does alongside it. A saver choosing between an easy access ethical cash ISA and a fixed term woodland ISA is really choosing between access and rate certainty, with the ethical feature present in both cases but delivered differently: one through community lending, the other through verified tree planting.

Who pays for the tree and where it is planted

The provider is explicit that the customer does not pay for the tree. Gatehouse Bank states that it is paying for the tree planting on behalf of its customers and that "this does not impact the expected profit rate"². In other words, the planting scheme is presented as an addition to the account rather than a cost passed on to savers through a lower return.

The planting is carried out under an agreement with a specialist partner. Gatehouse Bank has entered into an agreement with woodland project developer Forest Carbon to plant a tree for every Woodland Saver account². The trees are located within four specific UK woodland creation projects, and customers cannot choose which project their tree goes to². One of the four, the Lowther Whale Project in the Lake District National Park, is described by the provider as visitable².

The verification is the part that makes the claim more than a promise. All the woodland projects are registered on the UK Land Carbon Registry and independently verified under the UK Government's Woodland Carbon Code, which the provider states "ensures the right trees are planted in the right places"².

For a saver comparing claims, the questions worth asking of any green ISA are the ones this scheme answers: who pays, who plants, where, and who checks. Where a provider cannot answer them, the environmental claim rests on its own word alone.

Where ethical ISAs sit alongside other options

An ethical or sustainable ISA is one choice within the whole ISA range, and the ethical feature does not narrow the other options. The main alternatives, each with the same £20,000 allowance, are set out below.

The risk differences matter as much as the ethical ones. Cash ISAs, ethical or otherwise, are deposits: the main risk is that the rate fails to keep pace with inflation. Investment ISAs carry market risk, and the FSCS cover for investments is different from deposit protection, as the next section explains. The Lifetime ISA has its own rule: withdrawals before age 60, unless buying a first home, come with a 25% penalty, which takes back the government bonus and reduces your own savings¹⁴. The Lifetime ISA withdrawal charge page covers that in full.

Who each tends to suit is a matter of circumstance rather than ranking. A saver who wants easy access and a community lending story may prefer an ethical cash ISA, accepting an annually decided dividend. A saver who can lock money away and wants rate certainty, with an environmental feature attached, may prefer a fixed term woodland ISA. A saver with a longer horizon and tolerance for falls may look at sustainable ready-made investment ISAs instead. Sharia-compliant ISAs, covered on a separate page, overlap with this market too, since Gatehouse Bank's accounts are Sharia-compliant in structure.

FSCS protection for savings in an ethical ISA

Cash ISA deposits are protected by the Financial Services Compensation Scheme. The ethical cash ISA provider states that "your savings are protected under the Financial Services Compensation Scheme (FSCS), up to £85,000 per person."⁵

The official picture on the deposit limit is currently mixed. FSCS leaflets dated November 2025 state that "We protect up to £120,000 per person or company, per authorised firm." for deposits¹⁵, and a February 2026 FSCS leaflet repeats the £120,000 figure¹⁶. Earlier and other documents give £85,000: an FSCS leaflet from August 2020 states "We protect up to £85,000 per person or company, per authorised firm."¹⁷, and Consumer Scotland described the scheme in June 2025 as compensating consumers "up to £85,000 per eligible person, per bank, building society or credit union"¹⁸. The provider's own figure for this account is £85,000⁵.

Two further points apply to any ISA saver. First, the limit is per authorised firm: if you hold accounts with two providers that share one banking licence, their balances count together. Second, investment ISAs are covered differently: FSCS protects investments up to £85,000 per person per authorised firm, which is protection against the provider failing, not against the investments falling in value. The page on how your ISA is protected sets out both regimes, and the FSCS "protected" badge on a provider's site can be checked against the FSCS's own guidance¹⁹.

Inheritance and ethical ISAs

An ISA does not pass on outside the tax net. Isas form part of a person's taxable estate, along with other savings, property and possessions, and are subject to inheritance tax except when passed to a spouse²⁰. Which? makes the same point: "Isas aren't excluded from inheritance tax, so while widowers can inherit their partners' Isas tax-free, for everyone else they form part of the estate"²¹. The tax itself is usually paid by the personal representative, an executor or administrator, before the inheritance is distributed²².

The spouse exception is significant. Married couples and civil partners can pass possessions and assets, including savings and Isas, to each other tax-free regardless of the amount²³. On top of that, the surviving spouse or civil partner receives an extra ISA allowance equivalent to the value of the ISA inherited, known as the additional permitted subscription¹⁴. The additional permitted subscription page explains how that works, and what happens to an ISA when someone dies covers the process.

There is even a woodland-specific relief, though it applies to woodland owners rather than to ISA savers. Under Woodlands Relief, the value of the trees or underwood, but not the land itself, can be elected to be excluded from the value of the estate²⁴. That is inheritance tax relief on owning woodland, not on holding a woodland ISA, but it illustrates that the tax treatment of trees and the tax treatment of savings are separate matters. A tree planted through a woodland ISA belongs to the planting project, not to the saver, so it forms no part of the saver's estate.

Complaints and free help

If something goes wrong with an ethical or sustainable ISA, the route is the same as for any ISA. Complain first to the provider, in writing, setting out what went wrong and what you want put right. The page on complaining about an ISA provider explains the process, the timescales providers must keep to, and how to escalate to the Financial Ombudsman Service if the provider does not resolve the matter. Complaints about FSCS protection itself, including whether a firm is covered, can be checked through the FSCS's own published guidance¹⁹.

Free, impartial help is available without paying for advice. MoneyHelper, the government-backed money guidance service, provides free information on savings and ISAs, and the FSCS website publishes the current protection limits and the firms covered. For questions specific to a named product, the provider's product page and key product information document are the authoritative sources, and for the accounts on this page both are published online¹.