Leasehold Advice
Reserve and Sinking Funds Explained
A reserve fund is money set aside through the service charge for future major works on the building. How it works, where the money sits and what it means when you sell.
The Big Picture
A reserve fund is money collected through the service charge and set aside for the building's future major works, rather than left to be raised as a large one-off bill when the work is needed. The roof, the lift, the external decoration: these are expensive and they come round on a long cycle, and a reserve fund is the building's way of saving up for them in advance.
For a flat seller, the reserve fund matters for two reasons that pull in different directions. A healthy fund is a real selling point, because it tells a buyer the building is not about to hit them with a surprise bill. At the same time, it is money you do not get back: when you sell, your share stays with the building. This guide explains how reserve funds work, what the rules are and how the fund affects your sale.
This guide describes the law in England and Wales. Scotland and Northern Ireland handle building costs under their own separate systems.
What a Reserve Fund Is (and the "Sinking Fund" Question)
Most of a service charge covers the cost of running the building from year to year: the insurance, the cleaning, the managing agent's fee, the day-to-day repairs. A reserve fund is the part that looks further ahead. Instead of waiting for the roof to fail and then sending every leaseholder a bill for several thousand pounds, the building collects a smaller amount each year and builds up a pot to draw on when the work comes due.
Reserve fund or sinking fund?
You will see both terms, and in residential leasehold they are mostly used to mean the same thing. Where people do separate them, a sinking fund usually means money earmarked for one big known item, such as replacing a lift, while a reserve fund is a more general pot for major works across the building. Your lease might use either word. The label is not what matters; what matters is whether the lease allows the money to be collected, what it can be spent on and whether the balance is healthy.
How it is collected
Reserve fund contributions are part of your service charge, not a separate bill. The annual service charge demand will usually show the reserve fund contribution as its own line, so you can see how much of what you pay is going towards future works rather than this year's costs. Over a long ownership the amount adds up, which is exactly why what happens to it when you sell is worth understanding. For the wider picture of how service charges work, see our guide to service charges explained.
Whether Your Lease Allows One, and Where the Money Sits
A reserve fund is not automatic. The lease has to give the freeholder or the management company the power to collect one, and to say what it can be spent on. If your lease is silent on reserve funds, contributions cannot be demanded, and some older leases are silent. This is one of the clauses worth checking, and our guide on how to read your lease shows where to look.
The money is held on trust
Where a reserve fund is collected, the money does not belong to the freeholder or the managing agent. Under section 42 of the Landlord and Tenant Act 1987, service charge money, including the reserve fund, is held on trust for the leaseholders. In practice that means it should sit in a separate account rather than being mixed in with anyone else's money, and a well-run managing agent will hold it that way and show it in the annual service charge accounts.
What the law does and does not require
The basic trust rule is in force and it matters: it is what stops the fund being treated as the freeholder's money. A more detailed statutory regime for designated accounts and leaseholder information rights was passed years ago but has never been brought into force. Tighter transparency over how these funds are held and reported is part of the current leasehold reform programme, so the rules here may firm up. For now, the practical test is simple: can the managing agent show you the balance, the account it sits in and what it is for.
What It Pays For, and How It Works With Section 20
A reserve fund is for major works: the large, occasional jobs that keep the structure and the common parts in good order. These are jobs like roof repairs or replacement, external decoration, communal window replacement, lift overhauls, structural repairs and resurfacing a car park. It is not meant for the routine running costs, which the rest of the service charge covers year by year.
The link to Section 20
Major works often trigger a separate process called Section 20 consultation. Where a set of qualifying works would cost any single leaseholder more than £250, the freeholder or management company has to consult the leaseholders before going ahead, following a set procedure of notices and estimates. If they skip it, they can only recover £250 per leaseholder for those works, however much they actually cost.
A reserve fund does not remove Section 20
This is a common misunderstanding. A reserve fund changes where the money comes from, not whether the work has to be consulted on. Qualifying works still go through the Section 20 process even when the reserve fund is paying for them. What the fund does is soften the impact: the cost has been spread across years of contributions rather than landing as a single demand. If the fund does not cover the full cost, the shortfall is still collected from leaseholders in the normal way. Our page on the Section 20 notice covers the consultation process in detail.
Why You Do Not Get Your Share Back When You Sell
Here is the point that catches most sellers out. The reserve fund is not a savings account with your name on it. The money is held on trust for the leaseholders of the building for the time being, which means whoever owns the flats now. When you sell, you stop being one of those leaseholders, and your share simply stays in the fund. You do not get it back, and it is not separately added to the price the buyer pays.
This is different from a service charge surplus. If the building spends less than it collected in a given year, the lease may provide for the surplus to be credited back or carried forward. The reserve fund is not a surplus: it is money deliberately accumulated for the future, and the whole point of it is that it stays with the building so the works can be paid for when they fall due.
It can feel unfair if you have paid into a fund for years and then move before the works happen. The fairer way to see it is that you also benefited from the fund the previous owner built up, and the value of a well-funded building is something you can reflect when you set your asking price. The money is not wasted; it just is not cash you can withdraw.
What the Reserve Fund Means for Your Sale
Once you know the fund stays with the building, the question becomes how it affects the sale itself. It cuts both ways, depending on the state of the fund.
A healthy fund is a selling point
A buyer looking at a flat wants to know whether they are walking into a large bill. A reserve fund with a sensible balance, matched to a known programme of works, is genuine reassurance: it says the building plans ahead and the next big job is at least part paid for. It is worth making sure your estate agent and your conveyancer can speak to this clearly, because it is a real point in the flat's favour.
A thin or empty fund is a red flag
The reverse is also true. A building with little or no reserve fund, and major works visibly due, points to a one-off bill heading the buyer's way. A buyer's solicitor will pick this up, and a careful buyer will either negotiate on price or want the position pinned down before exchange. An empty fund is not fatal to a sale, but it is the kind of thing that pulls the price down or slows the deal.
What the buyer's side will ask for
The reserve fund balance is part of the management pack your conveyancer obtains from the managing agent, and the buyer's solicitor will check it as a matter of routine. They will want the current balance, what it is earmarked for and whether any Section 20 works are planned or under way. The ground rent and the service charge are material information about the flat, and the reserve fund sits alongside them: it is not something to keep quiet, because it surfaces in the legal pack anyway.
Should you do anything about a low fund before selling?
Usually there is little you can do, and little point trying. You pay into the fund at the rate the service charge sets, not by voluntary top-ups, and you would not get the money back in any case. The useful work is not topping up the fund but making the position clear: what the balance is, what works are expected and what the plan is for paying for them. A buyer can deal with a modest fund that is honestly explained far more easily than a vague one. If a thin fund and looming works are genuinely stalling a sale, a cash buyer is the route least troubled by it, since they can take a view on the building as it stands rather than waiting on a lender's reaction.
Further Reading
Two related guides cover the wider picture: how the service charge that funds the reserve works, and who actually runs the building and holds the money.
Frequently Asked Questions
In residential leasehold the two terms are mostly used to mean the same thing: money collected through the service charge and set aside for future major works. Where people do draw a distinction, a sinking fund tends to mean money earmarked for one big known item, such as replacing the lift or the roof, while a reserve fund is a more general pot for major works across the whole building. Your lease may use either word, or both. What matters is not the label but whether the lease allows the money to be collected, what it can be spent on and how healthy the balance is.
No. This is the point that surprises most sellers. The reserve fund belongs to the building, not to you, and it is held on trust for the leaseholders for the time being. When you sell, your contributions stay in the fund and the buyer inherits the balance. You cannot ask for your share back, and it is not deducted from what the buyer pays. It is worth knowing this before you sell, because it changes how you think about a healthy fund: the money you have paid in is not lost, but it works for you as a selling point rather than as cash back in your pocket.
Only if your lease provides for it. A reserve fund is not automatic: the lease has to give the freeholder or management company the power to collect one. If the lease is silent on reserve funds, contributions cannot be demanded, and some older leases are silent. Where the lease does allow a reserve fund, the contributions form part of your service charge and you have to pay them, subject to the same reasonableness rules as any other service charge item.
Yes. Reserve fund contributions are part of the service charge, so they are subject to the same test under section 19 of the Landlord and Tenant Act 1985: the amount has to be reasonable. If the contributions look excessive, or the fund is being built up far beyond any realistic future need, you can challenge them at the First-tier Tribunal. In practice a well-run building sets the reserve fund against a planned programme of works, so there is a clear answer to what the money is for.
Under section 42 of the Landlord and Tenant Act 1987, service charge money, including the reserve fund, must be held on trust for the leaseholders. In practice that means it should sit in a separate account, not mixed in with the freeholder's or managing agent's own money, and a well-run managing agent will hold it that way and account for it in the annual service charge accounts. A more detailed statutory regime for designated accounts was passed years ago but has never been brought into force, and tighter transparency rules are part of the current reform programme.
Generally yes. A healthy reserve fund tells a buyer that future major works are at least part funded, so they are less likely to face a sudden large bill soon after moving in. A buyer's solicitor will ask for the balance and what it is earmarked for. The exception is a fund that looks oversized with no clear plan behind it, which can prompt questions instead of reassurance. A fund that is clearly matched to a sensible programme of works is the version that helps a sale.
Not necessarily. A reserve fund changes where the money comes from, not whether the work has to be consulted on. If major works qualify for Section 20 consultation, that process still has to happen even where the reserve fund is paying. What a healthy fund does is soften the impact: the cost has been spread over years of contributions rather than landing as a one-off demand. If the fund does not cover the full cost, the balance is still collected from leaseholders in the usual way.
The fund does not belong to the managing agent, so it does not leave with them. The money is held on trust for the leaseholders, which means an outgoing agent has to hand the balance over to whoever takes over the management, along with the accounts. In practice a change of agent is one of the moments when a poorly run fund comes to light, so if your building has recently switched agents it is worth checking the reserve fund balance carried across cleanly.
Usually not, and in most cases you could not even if you wanted to: you pay into the fund at the rate the service charge sets, not by making voluntary lump sums. The reserve fund balance is what it is, and you cannot get it back when you sell anyway. The better use of your effort is making sure the position is clearly explained: what the balance is, what works are expected and what the plan is for funding them. A buyer can handle a modest fund that is honestly set out far better than a vague one.