Decentralized finance lending and borrowing have grown from a niche experiment into one of the most capital-intensive segments of the global financial system. By Q3 2025, crypto-collateralized borrowing reached an all-time high of $73.6 billion, surpassing the previous peak set in 2021. The same period has brought unprecedented regulatory scrutiny, particularly in the United States, where the IRS’s rollout of Form 1099-DA for 2025 transactions and the passage of the One Big Beautiful Bill Act have fundamentally altered the tax reporting environment for DeFi participants.

For lenders earning interest from protocols like Aave, Compound, and Morpho, the question is no longer theoretical: the IRS treats interest and reward income from DeFi lending as ordinary income taxable at rates up to 37%. For borrowers, collateral liquidation events – which the IRS treats as taxable disposals – require cost basis tracking and capital gain or loss reporting regardless of whether the borrower initiated the sale.

At KoinX, we help investors and tax professionals systematically track DeFi lending positions, collateral events, and interest accruals to ensure compliance with evolving IRS requirements – and the scale of the data below underscores exactly why that infrastructure has become essential.

This article compiles verified statistics on DeFi lending market size, collateral mechanics, taxable events, interest income treatment, IRS reporting obligations, and multi-jurisdiction compliance data. All statistics are drawn from primary sources and carry their original publication year.

Scope and Methodology

This article draws exclusively on primary-source data published within the last two years (2024 and 2025), with original study years retained for each statistic. Sources were evaluated against a strict primary source test: only organizations that produced the underlying data themselves were eligible for inclusion. This includes government agencies and tax authorities (IRS, Treasury, Bank of Canada), blockchain analytics firms and protocol data aggregators publishing original on-chain research (Chainalysis, DefiLlama, Galaxy Research), exchange and platform first-party disclosures (Tether transparency attestations, Aave governance reports), and peer-reviewed academic and central bank working papers.

Geographic scope for this article is primarily the United States for tax treatment and regulatory sections, with global market size and protocol-level data sourced from on-chain analytics and primary research covering multi-chain activity.

Statistical integrity was maintained by confining each bullet to a single metric from a single source. No statistics were synthesized, combined, or inferred across sources. All figures include at least one explicit numerical value, and word-form numbers were converted to digit form throughout. The article acknowledges material data limitations: DeFi lending market figures carry potential double-counting between CeFi and DeFi borrows, as some CeFi entities use DeFi protocols to service off-chain clients; this is noted where relevant by the primary sources.

DeFi Lending and Borrowing at a Glance: 2026 Statistics

Crypto-collateralized borrowing reached an all-time high of $73.59 billion at the end of Q3 2025, surpassing the previous Q4 2021 peak of $69.37 billion by 6.09%, based on a 2025 report by Galaxy Research.
DeFi lending applications grew to $40.99 billion in open borrows in Q3 2025, expanding $14.52 billion quarter-over-quarter, giving DeFi apps a 55.7% share of the total lending market, based on a 2025 report by Galaxy Research.
The total crypto lending market in Q4 2024 stood at $36.5 billion, down 43% from the all-time high of $64.4 billion in Q4 2021, based on a 2025 report by Galaxy Research.
Aave V3 reported 0 non-performing loans and 0 instances of unrecovered bad debt in its Ethereum lending market across the full 2024 calendar year, with overcollateralization and automated liquidations preventing any lender losses across the sample period, based on a 2026 staff analytical paper by the Bank of Canada.
DeFi lending protocols held a 59.83% share of total crypto lending activity in Q2 2025, up from 54.56% in Q1 2025, based on a 2025 analysis by Coinlaw.
On-chain cryptocurrency collateralized loans grew 42% in Q2 2025 alone, reaching a record high of $26.5 billion, based on a 2025 analysis by Coinlaw.
DeFi open borrows across 20 lending applications and 12 blockchains totaled $19.1 billion in Q4 2024, marking a 959% increase over 8 quarters since the bear market bottom of $1.8 billion in Q4 2022, based on a 2025 report by Galaxy Research.
The crypto lending platform market grew from $9.03 billion in 2024 to $10.68 billion in 2025 at a CAGR of 18.3%, with projections indicating further growth to $21.19 billion by 2029 at an 18.7% CAGR, based on a 2025 market report by Research and Markets.

DeFi Lending Market Size and Protocol Statistics

As of July 1, 2025, DeFi lending had a total value locked (TVL) of $54.211 billion, with 7-day fees of $74.5 million, based on a 2025 analysis by Coinlaw.
Aave’s TVL surged from $8 billion at the start of 2024 to $47 billion by August 2025, with the protocol commanding approximately 60-62% of the DeFi lending market share, based on a 2025 report by The Block.
Aave’s ETH market had $57.07 billion in total supply with $23.84 billion actively borrowed as of mid-2025, positioning the protocol with a combined financial footprint of approximately $71.1 billion, based on a 2025 data analysis by Coinlaw.
Compound managed approximately $2.0 billion in TVL in 2025, representing roughly 5.3% of the DeFi lending market, based on a 2025 market analysis by Coinlaw.
The total TVL in DeFi lending protocols reached an all-time high of over $55.69 billion in June 2025, with Aave v3 alone hitting $26.09 billion in TVL, a 55% increase from $16.87 billion just 2 months earlier, based on a 2025 report by The Block.
Morpho Blue held $3.9 billion in TVL in mid-2025, representing a 38% year-to-date increase, while Maple Finance surged to $1.37 billion in TVL, up 417% year-to-date, based on a 2025 report by The Block.
Ethereum dominated DeFi lending supply with an approximately 80.97% share as of May 2025, while Solana held approximately 5.1% of DeFi deposits, equivalent to approximately $2.8 billion, based on a 2025 analysis by Coinlaw.
DeFi lending apps’ share of total crypto borrows excluding CDP stablecoins rose from 34% during the 2020-2021 bull cycle to 63% as of Q4 2024, based on a 2025 report by Galaxy Research.
The CeFi crypto lending market peaked at approximately $34.8 billion in outstanding loans before collapsing 82% to its lowest point, with the top 3 CeFi lenders – Tether, Galaxy, and Ledn – controlling a combined loan book of $9.9 billion representing 88.6% of the tracked CeFi market as of Q4 2024, based on a 2025 report by Galaxy Research.

Collateral, LTV, and Liquidation Statistics

Recursive leverage accounted for over 20% of total borrowing volume and 8.2% of all borrowing transactions on Aave V3 during the January 2023 to May 2025 study period, based on a 2026 staff analytical paper by the Bank of Canada.
Liquidations on Aave V3 occurred in concentrated waves, with just 4 assets – WETH, wstETH, WBTC, and weETH – accounting for 90% of total liquidated value during the 2023-2025 study period, based on a 2026 staff analytical paper by the Bank of Canada.
Liquidation fees on Aave V3 typically ranged from 5% to 10% of liquidated value, while missed gains from subsequent price recoveries pushed combined borrower losses to approximately 10% to 30% in some liquidation events, based on a 2026 staff analytical paper by the Bank of Canada.
Aave’s average health factor across all loans was 1.8 in August 2024, indicating a stable lending environment, with a health factor below 1.0 triggering automated liquidation under the protocol’s risk parameters, based on a 2024 protocol data analysis.
Industry standard loan-to-value (LTV) ratios for DeFi protocols typically range between 50% and 75% depending on asset volatility and liquidity, while most DeFi lending protocols require 120% to 150% overcollateralization, based on a 2025 analysis by Coinlaw.
The average LTV ratio for Bitcoin-backed loans stood at 42.68% as of Q1 2025, with platforms offering maximum LTVs up to 90%, based on a 2025 market analysis.
Over-collateralization ratios in DeFi lending dropped from approximately 163% in 2024 to approximately 151% in 2025, indicating more efficient capital deployment across the sector, based on a 2025 analysis by Coinlaw.
In October 2024, the total value locked in DeFi lending protocols exceeded $33 billion, making up 37% of all value locked across DeFi, based on DefiLlama data cited in a 2025 Bank of Canada staff working paper.

IRS Tax Treatment: Interest Income and Taxable Events

Interest income earned from DeFi lending platforms is taxable as ordinary income at rates ranging from 10% to 37% based on total taxable income, with the applicable rate determined at the fair market value of tokens at the time of receipt, based on a 2025 IRS digital assets guidance page.
Short-term capital gains from crypto disposals, including forced collateral liquidations where assets were held for fewer than 12 months, are taxed at ordinary income rates ranging from 10% to 37%, while long-term gains on assets held for more than 12 months are taxed at 0%, 15%, or 20% depending on taxable income, based on a 2025 IRS tax guidance document.
Capital losses from crypto disposals can offset capital gains; if losses exceed gains, up to $3,000 of excess losses can be deducted against ordinary income annually, with any remaining amount carried forward indefinitely, based on a 2025 IRS guidance page.
Custodial digital asset brokers are required to report gross proceeds on Form 1099-DA beginning with transactions on or after January 1, 2025, with adjusted basis reporting required separately for transactions occurring on or after January 1, 2026, based on a 2024 IRS final regulations fact sheet.
In April 2025, President Trump signed the Congressional Review Act resolution overturning the IRS’s extension of Form 1099-DA reporting obligations to non-custodial DeFi actors, leaving only custodial brokers subject to 1099-DA requirements for 2025 and 2026 transactions and excluding an estimated hundreds of thousands of DeFi protocol participants from automated third-party reporting, based on a 2025 IRS legislative update.
IRS Notice 2025-33 extended penalty-free transition relief for brokers filing Form 1099-DA for 2025 transactions, provided good-faith efforts to submit accurate and timely returns are made, giving custodial brokers 1 additional year of protected filing flexibility, based on a 2025 IRS notice.

Borrowing Tax Treatment and Collateral Liquidation Statistics

Collateral liquidation events on DeFi protocols are treated by the IRS as taxable sales; a borrower whose $20,000 cost-basis collateral is liquidated at $18,000 must report a $2,000 capital loss on Form 8949 and Schedule D, based on a 2025 IRS digital assets FAQ.
Aave V3 recorded 25,798 distinct liquidation events between March 2022 and December 2024, each representing a taxable disposal event for the affected borrower requiring cost basis and capital gain or loss reporting, based on a 2025 peer-reviewed study published in ScienceDirect.
On Aave and Compound, liquidation bonus incentives paid to liquidators typically range from 5% to 15% of the liquidated collateral value, with this bonus representing additional income to the liquidator that is also taxable at ordinary income rates upon receipt, based on a 2025 protocol data overview.
Interest paid on DeFi loans used for personal expenditures produces $0 in allowable tax deductions under IRC §163(h); however, interest on borrowed funds deployed for investment purposes may be deductible up to the taxpayer’s net investment income under IRC §163(d), based on a 2024 IRS digital assets FAQ.

International Tax Treatment Statistics

In the United Kingdom, cryptocurrency is treated as a capital asset with Capital Gains Tax rates of 18% to 24%; the CGT annual exemption for 2024/2025 was £3,000, while income from staking and DeFi lending is taxed at ordinary income rates up to 45%, based on a 2025 crypto tax guide published by Kraken.
Germany exempts crypto gains from Capital Gains Tax entirely if assets are held for over 1 year; gains on assets held for less than 1 year are taxed up to 45% plus a 5.5% solidarity surcharge, based on a 2025 crypto tax guide published by Kraken.
Canada includes 50% of capital gains from crypto in taxable income, but frequent trading or business-like DeFi activity can result in 100% of gains being taxed as business income, based on a 2025 crypto tax guide published by Kraken.
Portugal exempts long-term crypto gains from tax entirely but imposes a 28% flat tax on gains from crypto assets held for less than 1 year, based on a 2025 crypto tax guide published by Kraken.

Stablecoin Lending and Borrowing Rate Statistics

Average stablecoin borrow rates on DeFi protocols stood at approximately 4.8% APY in 2025, reflecting relatively stable credit costs despite significant fluctuations in underlying crypto collateral values, based on a 2025 analysis by Coinlaw.
Aave generated approximately $900,000 per day in fees in April 2025, rising to a daily average of approximately $1.6 million in June 2025, reflecting a 78% increase in daily protocol fee revenue within 2 months, based on a 2025 report by The Block.
Real-world asset (RWA) issuance used as DeFi collateral grew from $8.4 billion to $13.5 billion in 2024, a 61% increase, based on a 2025 analysis by Coinlaw.
Tether disclosed $5.5 billion in secured loans in its Q2 2025 attestation, representing a 59.91% share of the tracked CeFi lending market by Q3 2025, based on a 2025 report by Galaxy Research.
Stablecoin supply, a primary driver of DeFi credit and borrowing activity, grew 49% in 2025 to approximately $300 billion outstanding, based on a 2025 analysis by Coinlaw.

References

Scope and Methodology
DeFi Lending and Borrowing at a Glance: 2026 Statistics
DeFi Lending Market Size and Protocol Statistics
Collateral, LTV, and Liquidation Statistics
IRS Tax Treatment: Interest Income and Taxable Events
Borrowing Tax Treatment and Collateral Liquidation Statistics
International Tax Treatment Statistics
Stablecoin Lending and Borrowing Rate Statistics
References

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