When a Bengaluru family moved into their new flat in 2026, the first bills after the keys were not the ones they had planned for. A monthly maintenance charge, a large one time corpus contribution, and questions about who now ran the community all arrived at once. These are not afterthoughts. Maintenance and the corpus fund shape the real cost and quality of apartment living for years, and how the builder hands the community over to its owners decides whether that money is well managed. Understanding them before you buy prevents unpleasant surprises after you move in.

The short answer. Maintenance charges are the recurring monthly cost of running your community, while the corpus or sinking fund is a reserve, usually collected once, for big future works like repainting or lift replacement. Under RERA these funds are your money, and the builder must maintain the project until the owners association is formed, then hand over the balance with an audited account. Monthly maintenance up to a threshold is exempt from GST, but the corpus is treated separately. The trade off is that good communities cost money to run, so check these terms before you buy.

Maintenance charges and the corpus fund are two different things that buyers often confuse. Maintenance charges are the recurring payments, usually monthly, that keep the community running: security, housekeeping, common area electricity, water, lifts, and shared amenities. The corpus or sinking fund is a reserve, typically collected as a one time contribution when you buy, meant to build a cushion for large future expenses such as structural repairs, external repainting, or replacing a lift. One funds day to day operations, the other funds the occasional big bill. Knowing which is which matters, because they are billed differently, treated differently for tax, and governed by different expectations of how the money is held.

How is the monthly maintenance charge set?

The monthly maintenance charge is usually set either as a rate per square foot of your flat or as a flat amount per unit, and it funds the community's running costs. A larger flat therefore often pays more under a per square foot model, while a per unit model spreads costs evenly regardless of size. What the charge buys, the level of security, the upkeep of amenities, and the quality of housekeeping, varies widely between communities, so a low charge is not always good news if it means services are underfunded. Ask what the current charge is, what it covers, and how it has moved over recent years, since this is a cost you will carry every month for as long as you own the flat.

What is the corpus or sinking fund for?

The corpus or sinking fund exists to pay for the large, infrequent works that ordinary monthly maintenance cannot absorb. Think of repainting the whole exterior, replacing a lift, waterproofing, or major structural repair, expenses that arrive rarely but cost a great deal when they do. By collecting a reserve up front and topping it up over time, the community avoids sudden large demands on residents when a big bill lands. For a buyer, the key questions are how much corpus is being collected, how it is held, and whether it will be properly transferred to the owners association, because this money is meant to protect you, not to disappear into the builder's accounts.

A healthy corpus is quietly one of the best signs of a well run community. When you consider a resale flat, ask the association how much sits in the corpus and how it has been used, because a well funded reserve means the next big repair will not trigger a sudden special levy on residents. An empty or depleted corpus, by contrast, is a warning that costs have been deferred and may soon land on owners as an unexpected demand. The corpus is not a fee to resent but a shared insurance against the large, predictable bills that every ageing building eventually faces.

How does GST apply to these charges?

GST treatment differs between the two, and the detail matters. Monthly maintenance is exempt from GST up to a threshold, commonly described as seven thousand five hundred rupees per member per month, above which the charge can attract GST, subject to the association's registration position. The corpus or sinking fund is treated separately, and that monthly exemption does not simply extend to it. A ruling in Karnataka has held that corpus contributions can be liable to GST as an advance for future services, generally at the time they are collected. Because the position is technical and depends on the association's turnover and registration, confirm the current treatment with a tax adviser rather than assuming any figure applies to your case.

What must the builder hand over to the owners association?

Under RERA, the money collected as maintenance and corpus is the buyers' money, and the builder has a specific duty around it. The promoter must maintain the project until the owners association is formed, and then transfer the balance held in the maintenance and corpus accounts to that association, along with an audited statement of account. A builder who sits on the collected corpus, or refuses to account for the maintenance fund, is in breach of that statutory duty, and it is a common and recoverable grievance. As a buyer, ask for clarity on how much has been collected and insist that the handover to the association includes a proper, audited transfer of these funds.

How is the owners association formed?

The owners association is the body of residents that takes over running the community from the builder, and its formation is governed by law. Under RERA, the developer is required to initiate the formation of the association within a defined period after a set share of units is handed over, commonly described as within three months of handing over half the units. Residents then register the association under a legal framework such as the Societies Registration Act or the Karnataka Apartment Ownership Act. Once formed, the association manages maintenance, holds the corpus, and represents owners collectively. A well run association is one of the biggest factors in how pleasant and well maintained a community remains over the years.

For a buyer, the transition from builder control to resident control is worth understanding, because it is often where communities stumble. While the builder runs maintenance, standards can be good but costs opaque, and once residents take over, the quality depends entirely on whether capable owners step forward and whether the funds were handed over cleanly. When you buy into an older project, ask whether the association is formed and active, whether the builder completed the handover with audited accounts, and how decisions are made. A community with an engaged, transparent association tends to hold its condition and its value far better than one where nobody wants the responsibility.

Your maintenance and corpus checklist

Work through these seven checks before and after you buy.

1. Ask the current monthly maintenance charge and exactly what it covers.
2. Confirm how the charge is set, per square foot or per unit.
3. Find out the corpus or sinking fund amount and how it is held.
4. Clarify the GST position on maintenance and corpus with a tax adviser.
5. Check whether the owners association has been or will be formed.
6. Insist the builder transfers funds to the association with an audited account.
7. Review how charges have moved over recent years for realism.

Where do these costs fit in your decision?

These recurring costs belong in your buying decision from the start, not as a surprise after handover. They are part of why an apartment differs from a plot, a contrast our guide to apartment versus plot buying explores, and the builder's duty to hand over these funds is one of the protections in our guide to your rights as a homebuyer under RERA. Whether you are buying a compact flat or a home in a project such as Adarsh Bellahalli in Kogilu, the quality of maintenance and the health of the corpus will shape your daily experience for years, so treat them as central, not incidental.

Frequently asked questions

What is the difference between maintenance charges and a corpus fund?

Maintenance charges are recurring, usually monthly, payments that fund day to day running costs such as security, housekeeping, and common area upkeep. The corpus or sinking fund is a reserve, typically collected once, for large future works like repainting or replacing a lift. One covers ongoing operations, the other covers occasional major expenses, and they are billed and taxed differently.

Is GST charged on apartment maintenance?

Monthly maintenance is exempt from GST up to a threshold, commonly seven thousand five hundred rupees per member per month, above which it can attract GST depending on the association's registration. The corpus fund is treated separately and does not share that exemption, and a Karnataka ruling has held it can attract GST. Confirm the position with a tax adviser.

Does the builder have to hand over the corpus fund?

Yes. Under RERA the maintenance and corpus funds are the buyers' money. The builder must maintain the project until the owners association is formed, then transfer the balance in these accounts to the association with an audited statement. A builder who withholds the corpus or refuses to account for it is in breach of a statutory duty.

When is the owners association formed?

Under RERA the developer must initiate forming the owners association within a defined period after a set share of units is handed over, within three months of handing over half the units. Residents then register it under a framework such as the Societies Registration Act or the Karnataka Apartment Ownership Act. The association then manages maintenance and holds the corpus.

Last updated 2026-08-15. PropNewz Team.