Most Right to Manage companies are run by leaseholders who volunteered for the job, not accountants, and the assumption that quietly takes hold is a reasonable-sounding one: we're not a business, we don't make a profit, so there's nothing to tax. There's a real principle behind that instinct — mutual trading — but it covers far less than most directors think, and the gap between what it actually covers and what people assume it covers is exactly where HMRC assessments and penalty notices come from.
An RTM company is still a company
A Right to Manage company, formed under the Commonhold and Leasehold Reform Act 2002 to take over management functions from a landlord without needing to prove fault, is a company limited by guarantee in exactly the same way any other UK company is. It has directors, it must file accounts at Companies House, and it exists as a legal entity separate from the leaseholders who are its members. None of that changes because its purpose happens to be managing a block of flats rather than trading for profit. For corporation tax purposes, HMRC starts from the same place it starts with any other company: it's chargeable on its profits unless a specific exemption takes a particular source of income out of scope.
The exemption that usually matters here is mutual trading, and it's worth being precise about what it actually protects, because the imprecision is where the trouble starts.
What mutual trading actually shields
The mutual trading principle says a body can't make a taxable profit by trading with itself. Where a group of people contribute to a common fund for a shared purpose, and any surplus can only ever come back to those same contributors or be applied for their shared benefit, there's no profit in any real sense — just members paying for their own costs collectively instead of individually. Service charge contributions collected from leaseholder members to pay for buildings insurance, cleaning, repairs and the management of their own building fit that description well. Money goes in from members, is spent on the members' building, and any unspent balance sits in the reserve fund for the members' future benefit. That whole cycle is outside the scope of corporation tax.
What mutual trading does not do is exempt the company itself, or every pound that passes through its bank account, from tax. It exempts a specific category of income: money received from members, for the members' shared purpose, with any surplus staying within that closed circle. Income that doesn't meet all three of those conditions falls back into the ordinary corporation tax regime, and RTM companies routinely receive exactly that kind of income without realising it's treated differently.
The one that catches almost everyone: reserve fund interest
This is the single most common source of an unexpected tax bill for RTM and residents' management companies, and it catches out companies with a healthy, well-run reserve fund more than anyone else. The principal in that deposit account is entirely made up of leaseholder contributions, so it feels like it should be covered by the same mutual protection as the contributions themselves. It isn't, because the interest isn't paid by a fellow member — it's paid by the bank. The mutual trading principle only shields income arising from transactions between the company and its own members; a bank is not a member, so interest it pays is ordinary investment income, chargeable to corporation tax like it would be for any other company holding funds on deposit.
The amounts involved are often small on a single block, a few hundred pounds a year, which is exactly why it goes unnoticed for years at a time. But the obligation to notify HMRC of chargeability doesn't have a de minimis threshold built in, and late notification penalties are calculated by reference to tax lost and behaviour, not by reference to how modest the underlying interest was.
Other income that sits outside the mutual pool
Reserve fund interest is the most frequent example, but it isn't the only one. Insurance commission or an introducer payment from a broker, where the policy is placed through an arrangement that generates a fee back to the company, comes from the insurer or broker, not from a member, and is taxable on the same logic. Rent or a licence fee received from a non-member — a caretaker's flat let out to someone who isn't a leaseholder, a car parking space licensed to an outside party, or income from telecoms equipment sited on the roof — is property or other income from a third party, again outside the mutual circle. Ground rent collected by the RTM company on behalf of the freeholder is generally passed through as agent rather than retained, but where any element is retained by the company itself, that retained element needs the same analysis applied to it individually.
The test to apply to any receipt isn't "does this ultimately benefit the leaseholders" — almost everything the company does benefits the leaseholders eventually. The test is where the money actually came from and under what arrangement. Money from a member, for the member's own shared purpose, with no possibility of it enriching anyone outside that circle, is mutual. Money from anyone else isn't, whatever it eventually gets spent on.
What this means in practice for the accounts and the filing
Companies House filing obligations apply regardless of the tax position; a company limited by guarantee still has to file accounts and a confirmation statement every year whether or not it owes a penny of corporation tax. The corporation tax question is separate and needs its own annual check: does this year's income include anything outside the mutual pool, and if so, has HMRC been notified and has a CT600 been filed covering that non-mutual income. Where the answer is reserve fund interest of a few hundred pounds, the resulting tax bill is small, but the compliance step, registering, filing, and paying on time, still has to happen, and it's usually cheaper and considerably less stressful to do it as a matter of routine than to discover several years of unreported interest after HMRC opens an enquiry.
Good practice is to keep mutual and non-mutual income clearly separated in the company's own bookkeeping from the outset, rather than trying to reconstruct the split retrospectively from bank statements when a return eventually needs preparing. It also makes the annual conversation with members far more straightforward when the accounts already show, in plain terms, what's shielded from tax and what isn't.
What we're actually telling clients
Don't extend the mutual trading exemption further than it actually goes. It protects contributions from members for their own shared purpose, full stop, and reserve fund interest is the recurring example that catches directors who assume the whole fund is untouchable simply because the money originally came from leaseholders. Check every income line the company receives against the three-part test, not against a general sense of who ultimately benefits, and register with HMRC as soon as any non-mutual income exists rather than waiting to be asked.
Common questions
Do Right to Manage companies pay corporation tax on service charges?
Generally no. Under the mutual trading principle, contributions collected from leaseholder members towards the cost of managing their own building are outside the scope of corporation tax, because a company can't be taxed on trading with itself. That protection only covers money coming from the members for the shared purpose the company exists to serve, not everything the company receives.
Is bank interest earned on an RTM company's reserve fund taxable?
Yes, in almost all cases. Interest is paid by the bank, not by a fellow member, so it falls outside the mutual trading exemption even though the underlying deposit is made up entirely of leaseholder contributions. This is the single most common source of an unexpected corporation tax liability for RTM and residents' management companies.
Does an RTM company need to register with HMRC for corporation tax?
It needs to register and notify chargeability once it has income that falls within the charge to corporation tax, such as reserve fund interest, insurance commission or rent from a non-member. A company with genuinely no non-mutual income has nothing to notify, but that should be confirmed each year rather than assumed, since most active RTM companies do hold interest-bearing reserve funds.
Is insurance commission received by an RTM company taxable?
Usually yes. Commission or an introducer fee paid by the insurer or broker doesn't come from a fellow member of the mutual pool, so it sits outside the mutual trading exemption in the same way bank interest does, and needs to be brought into account as taxable income for the accounting period in which it's received.
Kieran Holsgrove is a Director and Co-Founder of Grafene Accounting, the property tax specialist firm based in Liverpool. He advises property developers, investors and landlords across Merseyside, Greater Manchester, Lancashire and Cheshire on tax structuring, developer VAT, SDLT and the long-view decisions that compound over the life of a portfolio.
This article is general information, not personal tax advice, and tax rules change. Your own position depends on facts we cannot see from here — please take advice before acting on anything above.