Every new coin a lending pool accepts as collateral brings its own risk into money other people supplied. If its price collapses or its price feed is manipulated, loans against it can go bad before liquidators clear them, leaving the loss with the pool. Lending protocols answer with limits that cap borrowing against a riskier coin.
On Aave V3 that limit was Isolation Mode, which arrived with the protocol's launch in March 2022 alongside supply caps and borrow caps (source: Aave Docs, Changelog). Aave retired it from eight V3 markets in an April 2026 upgrade (source: Aave Governance, Upgrade Aave instances to v3.7 Part 1). A May 2026 upgrade removed it from ten more, which changes what an older guide or an older position means for you today (source: Aave Governance, Upgrade Aave instances to v3.7 Part 2).
What is Aave Isolation Mode?
Aave Isolation Mode was a V3 setting that let a riskier asset back only approved assets, usually stablecoins, up to a debt ceiling (source: Aave Docs, Aave V3 Overview). The v3.7 upgrade removed it along with siloed borrowing (source: Aave DAO, Isolation Mode Removal).
Aave runs on a shared-pool model, where lenders fund one pool that borrowers draw from (source: ethereum.org, What is DeFi?). If you already know how Aave works with ordinary collateral, Isolation Mode changed one thing only: what a single asset was allowed to back, and how much the whole market could borrow against it.
Before V3, any newly listed collateral gave its holders access to the whole pool's liquidity. A borrower using the new coin could, in principle, borrow everything on offer, so every listing added liquidity and solvency risk for all suppliers. Aave V3 introduced Isolation Mode to break that link, drawing on the exposure management MakerDAO used. Governance voted each isolated asset in (source: Aave, V3 Technical Paper).
| Setting before v3.7 | Normal collateral | Isolated collateral |
|---|---|---|
| What you could borrow against it | any borrowable asset in the market | only stablecoins approved for Isolation Mode |
| Other collateral on the same account | could be combined | could not be enabled at the same time |
| Limit on total debt against the asset | borrow caps and available liquidity | a debt ceiling shared by every user |
Stablecoins could sit on the collateral side of Isolation Mode too. Under Aave's V3 risk framework, last revised in September 2023, USDT and sUSD could be used as collateral only in Isolation Mode. Both carried a single point of failure in how each is governed. Their counterparty risk was too high to secure the protocol's solvency (source: Aave, Risk Parameters).
How Isolation Mode worked before v3.7
Before v3.7, an isolated asset carried three restrictions at once. It had to be the only collateral enabled on your account and could back only stablecoins that governance had flagged as borrowable in isolation. All borrowing against it by every user stopped at a debt ceiling set in US dollars (source: Aave, V3 Technical Paper).
The ceiling was a market-wide limit, separate from the borrowing power of any one account. It counted only the principal borrowed, so interest building up on open loans used none of the capacity, and any asset whose ceiling sat above zero counted as isolated. Aave's design example used an isolated token called TOKEN2 with a $10M ceiling, against which users could borrow USDT, DAI or USDC up to a combined $10M (source: Aave, V3 Technical Paper).
Because the limit was shared, your own capacity depended on what everyone else had already borrowed. Suppose $9.6M of principal was outstanding against TOKEN2 when you supplied $2M worth of it. Give it a 40% loan-to-value (LTV), the share of collateral value you may borrow, which was one of the two lowest settings Aave's V3 risk framework used for its most volatile assets (source: Aave, Risk Parameters). Your collateral would have supported $800,000 of debt, yet only $400,000 was left under the ceiling, so the protocol stopped you at $400,000.
The common mistake was to read the LTV on your own position as the amount you could borrow. On an isolated asset the smaller of the two limits won, and close to a full ceiling the shared limit was the one that bound. You entered with the same supply and borrow steps you follow to borrow on Aave with ordinary collateral, on an account with nothing else enabled as collateral.
Leaving took two steps in a fixed order. You repaid every stablecoin borrowed against the isolated asset, interest included. Only then could you disable the asset as collateral, because the protocol allowed that switch once no borrow was open (source: Aave, V3 Technical Paper). The asset stayed supplied after that and kept earning interest as an ordinary supply.
Isolation Mode vs siloed borrowing
Siloed borrowing was the debt-side counterpart to Isolation Mode, and v3.7 removed both. It was a flag on a borrowable asset: once you borrowed a siloed asset, it had to be the only asset you borrowed from that pool, whatever collateral sat behind the loan (source: Aave Docs, Aave V3 Overview).
The flag was meant for assets whose price could be pushed around. Under Aave's V3 risk framework, a new asset whose oracle might be open to manipulation could be placed in Siloed Mode, which kept the protocol's overall insolvency risk down. An illiquid pair, where a single trade can move the price sharply, was the typical case (source: Aave, Risk Parameters). Keeping such an asset as the only debt on an account limited how far a manipulated price could spread into loans of other assets.
| Feature | Isolation Mode | Siloed borrowing |
|---|---|---|
| Side of the account it limited | collateral | debt |
| Asset it applied to | a newer or more volatile collateral asset | a borrowable asset whose oracle might be open to manipulation |
| Main limit | approved stablecoins only, sole collateral, market-wide debt ceiling | the siloed asset had to be your only borrow in that pool |
| What triggered it for you | enabling the isolated asset as collateral | borrowing the siloed asset |
Suppose you held a USDC loan and then tried to borrow a siloed token. The protocol refused until you repaid the USDC, and the reverse applied as well: with a siloed token borrowed, a USDC borrow was refused until the siloed debt was gone.
Both kinds of control now come from E-Mode settings. Since v3.6, an E-Mode category can restrict which assets are borrowable inside it, which covers what siloed borrowing did while leaving room for controlled borrowing of several assets. Category-specific LTV 0 rules can also make an asset count as collateral only inside one category (source: Aave DAO, Isolation Mode Removal).
When Aave v3.7 removed Isolation Mode
Aave v3.7 removed Isolation Mode from 18 DAO-governed Aave V3 markets in two governance upgrades. The first, AIP 473, executed on April 19, 2026 (source: Aave Governance, Upgrade Aave instances to v3.7 Part 1). The second, AIP 489, executed on May 28, 2026 (source: Aave Governance, Upgrade Aave instances to v3.7 Part 2).
The first upgrade covered eight markets: the Ethereum EtherFi market, Optimism, Gnosis, Celo, Scroll, Sonic, MegaETH and X Layer. Before installing the new contracts it cleaned up every reserve. Any non-zero debt ceiling was set to zero, which also cleared the running total of isolated debt, and every borrowable-in-isolation flag was switched off. Those reserves came out of the upgrade with no trace of Isolation Mode left in their settings (source: Aave Governance, Upgrade Aave instances to v3.7 Part 1).
The second upgrade ran the same clean-up on ten more markets: Arbitrum, Avalanche, Base, BNB Chain, Linea, Mantle, Plasma, Polygon, and Ethereum's Core and Prime markets, with Prime still listed under its older name, Lido (source: Aave Governance, Upgrade Aave instances to v3.7 Part 2). Prime is the Ethereum market that launched in July 2024 as the Lido market (source: Aave Docs, Changelog).
| Upgrade | Executed | Markets | Isolation settings afterwards |
|---|---|---|---|
| AIP 473, Part 1 | April 19, 2026 | 8, from Ethereum EtherFi to X Layer | Debt ceilings at zero, borrowable-in-isolation flags off |
| AIP 489, Part 2 | May 28, 2026 | 10, including Ethereum Core and Prime | Debt ceilings at zero, borrowable-in-isolation flags off |
| Monad market | July 2, 2026 | 1, opened directly on v3.7 | No Isolation Mode code to clean up |
The Monad market is the nineteenth. It opened on July 2, 2026 (source: Aave Docs, Changelog). In all, 19 DAO-governed Aave instances now run v3.7: the 18 upgraded markets plus Monad, which launched on v3.7 (source: LlamaRisk, Unified Handling of the Isolated Flag in Aave V3.7 E-Modes). On every one of them, the contract functions that set a debt ceiling, approved a stablecoin for isolation or marked an asset as siloed are gone. Governance therefore cannot switch Isolation Mode back on through a parameter vote (source: Aave DAO, Isolation Mode Removal).
The same upgrades carried other changes that matter to borrowers. They added the isolated flag to E-Mode categories and made small improvements to liquidation calculations. They also made each market's list of reserves append-only, which means a listed asset can no longer be dropped from it (source: Aave Governance, Upgrade Aave instances to v3.7 Part 2).
What limits riskier collateral on Aave V3 now
On a v3.7 market, riskier collateral is limited through three tools set by governance: Efficiency Mode (E-Mode) categories, a loan-to-value of 0 on individual assets and per-asset supply and borrow caps (source: Aave DAO, Isolation Mode Removal). Together they cover what Isolation Mode did with one switch.
An Efficiency Mode category groups related assets so you can borrow on better terms, and since v3.7 governance can mark a category as isolated. Inside an isolated category, only the assets on the category's own collateral list add borrowing power. Every other asset you supplied is treated as having an LTV of 0. Such an asset backs no new borrow but still counts toward your liquidation threshold and health factor (source: Aave DAO, Isolated eMode).
Suppose you hold WETH and LINK, both enabled as collateral, and want to enter an isolated category built around ETH. The protocol refuses the switch while LINK is enabled, because LINK would drop to an LTV of 0 inside the category. Disable LINK as collateral or withdraw it, and the entry goes through with WETH on the category's terms. Once you are inside, LINK can still be supplied as an ordinary deposit that the protocol will not let you enable as collateral (source: Aave DAO, Isolated eMode).
Governance can also turn the flag on for a category you already use, and that is where an account gets caught. Suppose you sit in a non-isolated ETH category with $10,000 of WETH at an illustrative 90% E-Mode LTV and $5,000 of a volatile token at 40%. Your borrowing power is $9,000 plus $2,000, or $11,000, and you have borrowed $9,500 against it. Once the category turns isolated, the token's LTV drops to 0 and your borrowing power falls to $9,000, below your debt. Your health factor stays where it was, because the liquidation threshold is unchanged, so nothing is liquidated. What you lose is the ability to borrow more. You also have to withdraw the zero-LTV token before any WETH, or leave the category to restore the token's normal LTV (source: Aave DAO, Isolated eMode).
Outside E-Mode, governance limits a single asset by setting its LTV to 0. Such an asset cannot be enabled as collateral. If you already hold it as collateral next to other assets, it has to be withdrawn first, because a withdrawal or transfer of the other collateral reverts (source: BGD Labs, v3.6 ARFC). Supply caps then limit how much of an asset the protocol accepts and borrow caps limit how much of it can be lent out, which reduces the protocol's exposure to any one asset (source: Aave, V3 Technical Paper).
Aave V3 markets outside the v3.7 upgrade
Isolation Mode can survive only where the v3.7 upgrade never ran. The zkSync, Metis and Soneium markets moved to v3.6 in January 2026 (source: BGD Labs, v3.6 ARFC). None of the three is among the 18 upgraded markets, so they still run a version that contains Isolation Mode.
All three are now being closed. AIP 521, executed on September 19, 2026, deprecated the whole zkSync, Metis and Soneium markets, along with Sonic and Scroll, two markets that did take v3.7. Every reserve on those markets is frozen with its supply and borrow caps cut to 1. Reserves that carry a borrow also have their reserve factor raised to 99% and their base interest rate set to 5% (source: Aave Governance, Low Adoption Asset Deprecation on Aave V3).
A freeze blocks new supply, new borrowing and fresh use of an asset as collateral, while positions already in place can stay open. The higher reserve factor sends a bigger share of borrow interest to the Aave treasury, which leaves suppliers earning less until they withdraw. Utilization then climbs as supply leaves, which pressures borrowers to repay (source: Aave Governance, Low Adoption Asset Deprecation on Aave V3).
Here is an illustrative case on a stablecoin reserve that had a reserve factor of 15% before the freeze. If borrowers pay $1,000 of interest on it in a month, suppliers used to share $850 and the treasury kept $150. At a reserve factor of 99%, the treasury keeps $990 and suppliers share $10, so most of them withdraw. Your own $2,000 borrow on that reserve now costs at least 5% a year, or $100, even before utilization pushes the rate higher. If you still hold a loan on one of these markets, repay it first and then withdraw your collateral.
Each of these markets stores its debt ceilings and other reserve settings in its own contracts, so check the asset on the Aave market and network where you hold it before you rely on any isolation rule.
Aave Horizon sits apart from all of this. It is a licensed, separate instance of the protocol built for real-world assets that began as a fork of v3.3 (source: Aave Docs, Horizon RWA Market). Horizon was not on either DAO v3.7 network list, and its collateral rules belong to that market, so read its own settings before you carry over anything learned from the DAO markets.
Isolation on Aave V4
Aave V4 handles isolation through its structure. Liquidity sits in a shared Liquidity Hub and you supply and borrow through Spokes. Each Spoke carries its own risk settings under a cap the Hub sets on how much liquidity it can draw or add (source: Aave Docs, Aave v4 Overview).
On V4, Isolation Mode can be built as its own Spoke, with separate parameters and access rules, that still borrows from the Hub's shared liquidity. Per-Spoke add and draw caps sit beside freeze and pause functions, which gives governance several ways to contain a newer asset without splitting liquidity into separate pools (source: Aave Labs, How Aave V4 Handles Risk Isolation).
V4 also changes what a parameter update means for a borrower who already has a position. Governance can tighten settings such as LTV for new positions only. An existing borrower feels the change only after taking on more risk, for example by borrowing more, withdrawing collateral or disabling collateral (source: Aave Labs, How Aave V4 Handles Risk Isolation). On V3, switching an E-Mode category to isolated reaches open positions at once, cutting their borrowing power the moment it takes effect (source: Aave DAO, Isolated eMode).
| Question | Aave V3 on v3.7 | Aave V4 |
|---|---|---|
| Where isolation is set | An isolated E-Mode category, LTV 0 on single assets, supply and borrow caps | Its own Spoke, with separate parameters and access rules |
| Where the liquidity sits | A separate pool for each market | A shared Liquidity Hub that Spokes draw from |
| When a tighter LTV reaches your loan | At once, for open positions too | When you borrow more, withdraw or disable collateral |
V4 went live on Ethereum mainnet on March 30, 2026 with three Hubs, called Core, Plus and Prime, and eleven Spokes. It has since opened markets on other networks, including Avalanche and Arc (source: Aave Docs, Changelog). On Base, Coinbase Tokenized Stocks serve as collateral for USDC loans (source: Aave Labs, Coinbase Tokenized Stocks Now Live on Aave V4). V3 markets keep running beside it, so the version you use decides which rules apply to your loan. Before you open a new position, compare Aave V3 versus V4 on caps, liquidations and the app each version uses, then pick the market that fits the loan.
Old isolated positions and outdated guides
On a v3.7 market there is no isolated position left to manage. Before the upgrade, no isolated positions were open in production markets, and every asset that had carried a debt ceiling already had an LTV of 0, so the removal had no effect on users (source: Aave DAO, Isolation Mode Removal).
A token that used to be isolated is likely to sit at an LTV of 0 on your market, so check its LTV before you count on it. At an LTV of 0 it adds no borrowing power. Your health factor still decides whether a loan can be liquidated, so keep a wide margin on your Aave health factor while any LTV 0 asset sits on the account.
Older guides are the bigger trap. Isolation Mode and siloed borrowing still appear among the key V3 features in Aave's own V3 overview, with a link to the parameters where debt ceilings used to be set (source: Aave Docs, Aave V3 Overview). Read any instruction to check a debt ceiling, look for an isolated icon or plan around a borrowable-in-isolation list as a description of the old rules.
Work through these checks before you rely on an older guide:
- Find which Aave market and version your position sits on. The markets upgraded by AIP 473 and AIP 489 run v3.7, while zkSync, Metis and Soneium do not, and V4 is a separate protocol.
- Look up the asset's LTV, liquidation threshold and caps on that market, since those settings now carry the limits a debt ceiling used to set.
- Check whether your account is in an E-Mode category and whether that category is isolated, because that setting decides which of your assets add borrowing power.
- Withdraw any LTV 0 asset before other collateral, using the same steps you would follow to supply on Aave, and check the health factor again after each change.
Borrowing on Aave vs trading AAVE
A loan on Aave is a position you manage with collateral and repayments inside a pool of smart contracts, while trading AAVE on an exchange is a position in the token's price. The same market move reaches both under different rules: a health factor on Aave and, for a perpetual position, a margin requirement on the exchange.
BloFin offers AAVE/USDT Spot for holding the token without margin and the AAVEUSDT Perpetual for trading its price through a margined contract. Neither market changes the collateral settings of an Aave loan.
| Position | Where it runs | What can force it closed |
|---|---|---|
| Aave borrow | the pool's smart contracts | a health factor below 1, acted on by any liquidator |
| AAVE/USDT Spot holding | the exchange's spot market | nothing; a lower price lowers its value without a forced sale |
| AAVEUSDT Perpetual position | the exchange's margin system | margin falling below what the position requires |
Your Aave collateral settings, your E-Mode category and your health factor stay exactly where they were after an order on either BloFin market, because all three are recorded in the pool contracts. Selling AAVE does not repay a USDC loan on Aave, and repaying that loan does not add margin to a perpetual position. Each side has to be funded from its own balance, which is the point to settle before you place the first order.
Keeping loan funds separate from trading funds
If you also trade AAVE, keep the loan's repayment reserve separate from the money committed to that trade. A market sell-off can put pressure on both balances at once, so check collateral settings and set aside funds for the loan before deciding what you can afford to trade.
Suppose your Aave loan sits at a comfortable health factor and you also open a long AAVEUSDT Perpetual position. A sell-off pushes your collateral down and the health factor toward 1, while the same move eats into the perpetual's margin. Both positions call for cash at once, which is why the routine below sets the loan's buffer aside before the trade opens.
A simple routine keeps both positions under control:
- Check the loan's health factor, and whether any collateral sits at an LTV of 0, before you open the trade.
- Size an AAVE perpetual futures position from the distance to your stop loss, so a stopped trade never uses funds you set aside for the loan.
- Keep a reserve of the stablecoin you borrowed, so you can repay on Aave without closing a trade at a bad price.
Before your first order, work through how to trade AAVE on BloFin so the order panel and position settings are familiar. Check the maker and taker rates for your tier on the BloFin fee schedule when planning the cost.
Looking to trade AAVE tokens on BloFin? To get started, you'll need to first create a BloFin account, fund your account with cryptocurrency, then open the AAVE/USDT Spot trading page or the AAVEUSDT Perpetual page.
Frequently asked questions
Why did Aave remove Isolation Mode?
Aave removed it because almost nobody used it and newer tools did the same work. Very few assets carried a debt ceiling, siloed borrowing was never switched on for a production asset, and the v3.6 upgrade had already brought more flexible tools for the same control. Dropping both features took about 600 lines out of the core contracts and cut gas on everyday actions, with a repayment saving roughly 3,200 to 7,200 gas (source: Aave DAO, Isolation Mode Removal).
Why does an Aave dashboard still show a debt ceiling of zero?
Apps and analytics tools that read the old fields still get an answer after v3.7, because the data contracts keep returning the disabled values. A reserve now reports isolated debt of 0 and siloed borrowing as false, while the storage slots that held the ceiling and the two flags are marked unused. A zero ceiling or zero isolated debt on a dashboard is therefore a trace of the removed feature, and it tells you nothing about how risky the asset is or how much you can borrow against it (source: Aave DAO, Isolation Mode Removal).
Could governance isolate an asset that users had already supplied?
Governance could mark an asset as isolated only while nobody had supplied it, a rule the contracts checked before the setting took effect. Isolation was therefore a decision taken when a token joined a market, before anyone held it as collateral. The opposite step stayed open at any time, because authorized entities could take an asset out of Isolation Mode whenever they chose. A listing could start strict and loosen later, while a token already in wide use could not be pulled into isolation (source: Aave, V3 Technical Paper).
Was isolated collateral switched on automatically when you supplied it?
Since v3.6, an isolated asset you supply stays a plain deposit until you enable it as collateral yourself. Version 3.2 had added a role that let certain permissioned entities deposit an isolated asset and have it enabled in the same step. Nobody ever needed that feature, and it added gas cost and code complexity, so v3.6 dropped the role. The zkSync, Metis and Soneium markets still run v3.6, so that is the rule an isolated asset follows there (source: BGD Labs, v3.6 ARFC).
How does borrowing work on Aave Horizon?
Horizon lets qualified institutions borrow USDC, RLUSD, GHO and other permissionless stablecoins against tokenized real-world assets. Only users allowlisted by each asset's issuer can supply that collateral, the aTokens they receive cannot be transferred, and supplied real-world assets cannot be borrowed by anyone else. Any user can supply the stablecoins to earn yield, but those stablecoins cannot serve as collateral, so borrowing starts with supplying and enabling a real-world asset (source: Aave Docs, Horizon RWA Market).
Does the isolated E-Mode flag change which assets I can borrow?
The flag changes which supplied assets contribute borrowing power, while the category's borrowable-asset list remains a separate setting. A category marked isolated can therefore still permit borrowing several assets if its borrowable list allows them. Check both lists when reviewing a category: the collateral list determines which deposits can back new debt, and the borrowable list determines which loans the category permits (source: Aave DAO, Isolated eMode).
Researched and written by the BloFin Academy editorial team with AI-assisted drafting. Primary sources include the Aave governance proposals that upgraded Aave V3 to v3.7 (AIP 473 and AIP 489) and wound down low-adoption markets (AIP 521), the Aave v3.7 documentation on removing Isolation Mode and on isolated E-Mode, BGD Labs' v3.6 proposal. Other sources are LlamaRisk's proposal on the isolated E-Mode flag, the Aave V3 technical paper and V3 risk-parameter framework, the Aave Docs V3 overview, V4 overview, Horizon page and changelog, Aave Labs on V4 risk isolation and on Coinbase Tokenized Stocks, and ethereum.org on DeFi lending. All facts independently verified against cited documentation current as of October 2026.
This article is for informational and educational purposes only. It is not financial, investment, trading, or legal advice. Cryptocurrency can lose value. Borrowing on Aave can lead to liquidation if the health factor drops below 1. Spot AAVE/USDT buys the token. An AAVEUSDT Perpetual is a contract on the price. Do your own research. Consider your circumstances before using any protocol or trading any asset.