Supplying crypto to a lending protocol is not "parking" it. Under U.S. tax law, crypto is property, and swapping one property for another is generally a disposition. That means a deposit into CollateralLoop Lending, a repayment, a withdrawal, or a liquidation can all produce a taxable event — even when no dollars touch your bank account.
The result is a gap most users discover in April: the protocol dashboard shows a healthy position, and the tax return shows gains nobody planned for. Below is what actually gets reported, and where people get it wrong.
Why lending creates tax events at all
Moving money between your own bank accounts is invisible to the IRS. Moving crypto between your own wallets usually is too, because the ownership never changes. Lending is different. On CollateralLoop Lending, you hand over an asset and receive a receipt token in return. The tax code reads that exchange as a sale, and any gain since you originally acquired the deposited asset is realized at that moment.
Borrowing is murkier. One reading treats loan proceeds as non-taxable because you owe the asset back. Another treats the receipt of a different asset as a disposition. There is no clean IRS guidance specific to DeFi lending, so the practical answer is to record everything and let a crypto-literate accountant apply the treatment that fits your facts.
The four core events to track
Deposits and receipt tokens
You supply 1 ETH with a cost basis of $1,200 at a time when ETH trades at $3,000, and you receive a receipt token representing that ETH. If the exchange is a disposition, you have just realized an $1,800 gain without selling anything. This is the single most commonly missed event in DeFi lending.
Borrowing
Borrowing is where professionals genuinely disagree. Loan proceeds may be non-taxable, or the receipt of a different asset may count as a disposition. Either way, the burden of proof sits with you, and you cannot reconstruct what you never logged.
Interest earned and interest paid
Interest earned on supplied assets is generally ordinary income at fair market value when received. On receipt tokens, that interest accrues continuously as the token's value grows, which makes daily tracking impractical. Interest paid on borrowed assets may be deductible in some situations, though the rules for personal crypto loans remain unsettled. The paid side is easy to forget because it never appears in your wallet as a line item.
Repayment and withdrawal
Repaying a loan means acquiring the borrowed asset and returning it. If the price moved between borrowing and repayment, that repurchase carries its own gain or loss. Withdrawing collateral converts receipt tokens back to the underlying asset — another swap, another potential event.
A scenario that trips people up
In March, you supply $10,000 of USDC to CollateralLoop Lending and borrow $5,000 of ETH against it. By June, ETH has dropped 30%. You buy $3,500 of ETH on an exchange and repay the loan early. Financially, that is a good outcome.
Tax-wise, you have two separate events: a disposition of the ETH you originally borrowed, and a second event on the repayment itself. Two tax lots, two sets of numbers. If you did not record the ETH price on the day you borrowed, you will be rebuilding that history from block explorers months later. Keep the log as you go.
Records worth keeping
Screenshotting your portfolio value tells you nothing about basis. What you actually need:
- Timestamp and USD price of every asset at the moment of each transaction
- Cost basis of anything you deposited, traced back to when you originally acquired it
- Interest accrued on both supplied and borrowed positions
- Gas fees, which may be added to basis or deducted depending on the transaction
- Liquidation events, if any — forced dispositions that often produce the largest gains
Export your CollateralLoop Lending transaction history and reconcile it against your exchange records. The two will not match. That is normal; your job is to explain why.
Liquidations: the event nobody plans for
A liquidation is a forced sale of your collateral at a bad price. For tax purposes it is still a disposition. If the collateral had appreciated since you acquired it, the gain is realized even though you lost the asset. Any loss on the liquidation itself may be deductible, but it does not automatically cancel the gain on the underlying collateral.
Frequently asked questions
Does supplying crypto to CollateralLoop Lending count as a taxable event?
Most tax professionals treat it as a disposition, because you exchange your asset for a receipt token. Any gain or loss since you acquired the asset is realized at that moment. The rules are not perfectly settled, so your situation may differ. Keep records regardless.
Is borrowing on CollateralLoop Lending taxable income?
This is genuinely disputed. Some argue loan proceeds are not income because you are obligated to repay. Others point out that you received a different asset, which resembles a disposition. There is no clean IRS guidance for DeFi lending. Consult a crypto-literate accountant before filing.
How do I report interest earned?
Interest on supplied assets is typically ordinary income, reported at fair market value when received. On receipt tokens, interest accrues continuously as the token value grows, which makes daily tracking impractical. Many taxpayers approximate with monthly snapshots and disclose the method used.
What happens if I get liquidated — do I still owe tax?
Potentially, yes. The liquidation is a forced disposition of your collateral, so any gain since you acquired it is realized. You may also have a deductible loss on the liquidation penalty itself. The two do not cancel out automatically.
Open your CollateralLoop Lending transaction history and count the events from last year. If the number surprises you, that is your answer about whether you need professional help before the next filing deadline.