DeFi Insurance
What is DeFi insurance, what does DeFi insurance cover, what does it cost and how can insurance alternatives like Nexus Mutual protect your assets in DeFi
Last updated: May 2026
TL;DR
DeFi insurance alternatives offer protection against loss events involving digital assets deposited in decentralized finance protocols. It is not regulated insurance, and cover is typically discretionary. Claims are assessed and paid at the discretion of the provider rather than under a legal obligation, as with Nexus Mutual. Loss events may occur due to smart contract exploits, oracle failures, staking slashing, or digital asset depegs. Coverage, cost and claims processes vary depending on how the assets are held and who provides the protection. Protection is available from onchain providers including Nexus Mutual (protocol, depeg, and staking risk), and some protocols embed it at the protocol level.
On this page
What is DeFi insurance?
DeFi insurance is a broad and emerging category of financial protection designed to cover losses from specific loss events involving digital assets deposited in decentralized finance (DeFi) protocols. Generally, coverage does not directly protect against market volatility or trading losses. Instead, it protects against defined risks where digital assets are lost or rendered inaccessible through no fault of the holder. What is covered, and what is excluded, depends on the provider, the product structure and how the digital assets are stored.
The main provider in the DeFi insurance alternative space is Nexus Mutual. Nexus Mutual uses transparent, onchain mechanisms to cover smart contract and protocol-level risks that other providers typically don't address.
How do DeFi insurance alternatives work?
Nexus Mutual provides discretionary cover, not insurance. Rather than relying on traditional insurance structures, it operates as a discretionary mutual on Ethereum, pooling capital to underwrite onchain risks collectively. The capital pool, claims history, and covers are all fully transparent onchain.
Capital and underwriting
Cover capacity on Nexus Mutual is created through staking pools. Members with underwriting expertise can create a staking pool, select which protocols and risks to cover, and set pricing for each cover product. Other members can delegate their NXM (the mutual's native utility token) to these pools, which opens up the capacity for cover to be sold.
Each staking pool underwrites a defined set of cover products, earns premiums for providing cover, and carries the risk associated with those products. When someone purchases cover, 50% of the cover fee is distributed as rewards to the NXM stakers in the pool that underwrote the cover. The other 50% accrues to the capital that backs all NXM tokens, benefiting the mutual as a whole.
This structure creates aligned incentives: staking pool managers and NXM stakers earn rewards for underwriting risk. If a claim is approved and paid out, the staked NXM allocated to the relevant pool is burned to facilitate the payout. Underwriters are compensated for taking on risk, and they bear the cost if that risk materializes.
Important
Cover functions similarly to insurance: members pay a premium for protection against specific, defined loss events, and losses are evaluated by experts before claims are paid out. Since 2019, Nexus Mutual has paid out more than $18.5 million in claims.
Pricing
Cover pricing on Nexus Mutual is dynamic and adjusts based on supply and demand. Each cover product has a target price, which is the lowest price a staking pool manager is willing to accept for that product. When demand increases and more cover is purchased, the price trends upward. When demand decreases and no new covers are purchased, the price decays back toward the target price over time.
The premium a cover buyer pays is calculated based on the cover amount, the annual price at the time of purchase, and the cover duration. Cover can be purchased for a minimum of 28 days and a maximum of 365 days. Premiums can be paid in ETH, NXM, USDC or cbBTC, depending on the product. Onchain cover through Nexus Mutual starts from approximately 0.12% per year. Large and bespoke covers are individually structured and priced on a case-by-case basis.
Claims
In the event of a covered loss, the claims process takes place onchain through the Nexus Mutual app, with support from our risk experts.
The first step is to provide details about the loss along with the supporting evidence (referred to as proof of loss). For onchain losses, this means cryptographic proof that you own and control the affected address, either by signing a message or sending a zero-value transaction from that address. After a loss event, a 14-day cool-down period applies before a claim can be submitted.
Once a claim is submitted, the Claims Committee reviews the submission, assesses its validity, and votes on the outcome. The Claims Committee is made up of publicly known experts with an established record of assessing claims within the mutual. Assessment typically takes between three and five days.
If the claim is approved, the payout is redeemable after a 24-hour post-assessment period. If the claim is denied, you can file another claim with additional supporting evidence.
There are six main categories for DeFi insurance (source: Onchain Risk Map 2026). Each risk category addresses a different risk profile.
Theft, hacks or withdrawal failures at third-party custodians
DeFi users and investors using third-party custody
Smart contract exploits, oracle failures, liquidation failures, governance attacks
At select protocols, transactions up to certain amounts can be protected against technical, economic and security risks
Users of select DeFi protocols that offer embedded coverage against Transaction Risk
DeFi users and investors with stablecoin and/or wrapped assets
ETH proof-of-stake slashing penalties, protocol staking penalties
Intrinsic risks of using public blockchain infrastructure, such as blocked/reversed transactions or network stalls
All blockchain system participants
DeFi insurance alternatives compared
Several providers offer protection against DeFi risks, each with a different structure, claims process, and capital model. Nexus Mutual is one of the most established and longest running onchain cover providers, with a broad product range and the extensive claims track record in the space. OpenCover extends Nexus Mutual's capacity across multiple chains. Chainproof takes a different approach as a regulated insurer backed by traditional reinsurance capital.
Note: Coverage terms, pricing, and availability change over time. Always review the current cover wording and terms directly with each provider before purchasing.
For a broader view of the crypto protection landscape including traditional insurers and custodial risk providers, see the Crypto Insurance page.
Do DeFi insurance alternatives actually pay claims?
This is the most common question in DeFi covers, and for good reason. Protection is only worth something if it pays out when things go wrong. Nexus Mutual has the significant claims track record with $18,502,138.31 paid to cover holders since 2019. Every claim event, including the outcome, the payout amount, and the assessment process, is publicly documented and verifiable onchain. Below are the documented claim events.
Source: Nexus Mutual Claims History and Claims Dune Dashboard.
Claims paid
2021
Claims paid
$2,716,958.11
2022
Claims paid
$6,615,394.75
2023
Claims paid
$8,883,212.99
2024
Claims paid
$6,895.07
2025
Claims paid
$245,957.29
Large and bespoke cover is individually structured and priced on a case-by-case basis.
Risks and limitations
No single protection fully eliminates all risk. Nexus Mutual's cover wordings define exactly what is and is not covered. Understanding these limitations is part of making an informed decision. The full terms and conditions are available on each product's cover page. For a list of cover product types, see the Cover Products section.
What is not covered
The cover wordings contain specific exclusions. Across both Protocol Cover and Crypto Cover, the following are not currently covered:
✕
Losses due to phishing, private key security breaches, malware, or any activity where the designated protocol continues to act as intended
✕
Losses from market price movements, unless caused by oracle failure or oracle manipulation as defined in the cover wording
✕
Losses from rug pulls, where owners or controllers of a protocol confiscate or steal funds using permissions granted to them under the protocol's design
✕
Losses from the depeg of any asset the designated protocol itself generates (separate Depeg Cover exists for specific pegged assets)
✕
Losses from user interface or website errors where the underlying protocol acts as intended
✕
Losses from bridge components within a designated protocol
✕
Events that occurred before the cover period began, or where public bug disclosures or warnings were made before the cover period began
✕
Claims filed before the cool-down period has ended (14 days for Protocol Cover, 100 days for custody withdrawal halts)
How claims work in practice
There are some practical considerations which can be found in the cover documentation:
•
Typically, a 5% deductible applies to Protocol Cover claims by default; the first 5% of the cover amount is excluded from any payout
•
Claim amounts are calculated at the time of loss using exchange rates from CoinGecko
•
If you receive reimbursement from another source (such as a protocol repaying affected members), your claim amount is reduced accordingly and double recovery is not permitted
•
Cover ends when the full cover amount has been redeemed or the cover period expires, whichever is earlier
•
Approved claims must be redeemed within 30 days of approval or the payout is forfeited
Smart contract risk in the cover protocol itself
DeFi cover protocols are themselves built on smart contracts, which means they carry their own technical risk. Nexus Mutual mitigates this through multiple audits, a bug bounty program on Immunefi, and years of battle-tested operation. For details, see the Audits and Security section.
How to get DeFi cover
Buying cover through Nexus Mutual
1. Become a member. Go to app.nexusmutual.io and select Membership. You will need to verify your identity through a KYC process by submitting a photo of a government-issued ID. Pay the 0.0020 ETH membership fee to finalize your membership. Onboarding only takes a few minutes.
Please note: membership is not available in certain restricted jurisdictions. See the Membership page for the full list before applying.
2. Choose your cover. Browse available listings in the app. Select the protocol, custodian, or risk you want covered. Choose your cover amount and duration (minimum 28 days, maximum 365 days).
3. Pay the premium. Premiums can be paid in ETH, NXM, USDC, or cbBTC depending on the product. Pricing is dynamic and starts from approximately 0.12% per year. Your cover is active as soon as the transaction is confirmed.
4. Making a claim. If you suffer a loss from a covered event, wait for the cool-down period to pass (14 days for Protocol Cover), then submit a claim through the app with proof of loss. The Claims Committee will then review and vote on your claim, typically within three to five days.
Buying cover through OpenCover
Bespoke and institutional cover
Large and bespoke covers for institutional clients, funds, and protocol teams are individually structured and priced. Get in touch with the Nexus Mutual team to discuss options.
Frequently asked questions
Is there insurance or cover for DeFi?
How much do DeFi insurance alternatives cost?
What is the safest way to protect my crypto?
What does Nexus Mutual cover?
How do I buy DeFi cover from Nexus Mutual?
