You look at the yield numbers ticking up in your vault. Do you ever wonder—where is this money actually coming from?
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Only when you understand the yield source can you know what kind of money you are earning and what kind of risk you are taking. BTCFi vault yield basically comes from just these four sources.
Source 1: Lending interest — other people borrow, you collect rent
This is the most straightforward yield source. You deposit BTC or BTC LST into a vault. The vault lends it to institutions or individuals who need it. They pay interest, and you collect the yield.
How it works in practice: Some institutional-grade vaults lend funds to verified top market makers and trading firms such as Selini Capital and Amber. These firms pay interest generated by real economic activity like market making, arbitrage, and liquidity provision. They are not just issuing tokens to fool you.
Yield profile: Relatively stable. Solv Protocol's yield vault does this by generating yield through over-collateralized lending markets. Current annualized yield is roughly 3-5%.
Common reason for failure: Some people think lending yield simply means "someone borrows my BTC and pays me interest." But in reality, the vault may allocate your funds across multiple DeFi protocols, so the yield source may mix several strategies. If you only look at the surface APY without checking the underlying allocation, it is easy to misjudge the risk.
Source 2: Staking and restaking rewards — using BTC as a security layer
This is a model popularized by protocols like Babylon. Your BTC or BTC LST is used to provide security for other PoS blockchains. In return, you receive staking rewards.
How it works in practice: Through Babylon's trustless Bitcoin vault infrastructure, you can earn rewards without giving up custody of your assets. Products like SolvBTC deploy funds into Babylon's staking protocol to generate underlying restaking yield.
Yield profile: This part of the yield is paid in protocol tokens such as BABY, not in BTC-denominated returns. The base yield is not high, but there may be additional airdrop expectations.
Source 3: Market-neutral strategies — earning steady money without betting on price direction
The vault earns yield through market making, arbitrage, and funding rate strategies without taking directional BTC risk.
How it works in practice: Take Solv Protocol's early strategies as an example. Its yield generation included:
Market making: Profiting from the bid-ask spread on decentralized perpetual exchanges.
Delta-neutral funding rates: Collecting funding rates through equal long and short futures positions.
Cross-exchange arbitrage: Profiting from price differences across different exchanges.
The core of these strategies is to hedge away BTC price risk and earn only from market friction.
Yield profile: Volatility is relatively low, but professional teams are required. Automated vaults offered by platforms like Volo and Solv Protocol fall into this category.
Source 4: Liquidity provision and trading fee sharing — you act as the bank counter
You deposit BTC or LST into a liquidity pool on a decentralized exchange. When other people trade in the pool, you earn a proportional share of the trading fees.
How it works in practice: On Bitcoin L2s like Starknet and Stacks, you provide liquidity for trading pairs such as BTC/USDC or BTC/LST and earn a portion of every trading fee. Yield trading platforms like Pendle let users separate yield from principal and trade them, allowing profit from the yield market.
Yield profile: Potentially higher, but you face impermanent loss risk. If the BTC price moves sharply relative to the other asset in the pool, you may suffer losses.
One table to understand the four yield sources
| Yield source | Underlying logic | Yield profile | Main risk |
|---|---|---|---|
| Lending interest | Your funds are lent to others; you collect rent | Relatively stable, 3-5% annualized | Borrower default, protocol credit risk |
| Staking/restaking | Providing security for PoS chains | Mainly paid in protocol tokens, possible airdrops | Slashing risk |
| Market-neutral strategy | Market making, arbitrage, earning funding rates | Multiple yield sources, but depends on team skill | Strategy failure, hedging breakdown in extreme markets |
| Liquidity provision | Injecting funds into DEX pools and sharing fees | Potentially higher, affected by trading volume | Impermanent loss, slippage |
Questions you should ask yourself
Before putting money into any BTCFi vault, figure out three things first:
Is the yield BTC-denominated or USD-denominated? If the vault shows yield in USD but BTC falls, your real return may be wiped out or even turn negative. Choosing a yield vault denominated in BTC is clearer because you can directly see whether your BTC amount is growing or shrinking.
Is there a points or airdrop component inflating the number? Many high APY figures are actually converted from expected points, not real returns you receive. Strip out the points portion from the APY and see how much real yield is actually there.
How many protocols is your money deployed into? Kraken's Bitcoin Vault spreads funds across multiple protocols like Aave and Morpho. This diversifies risk but also means trusting the code of multiple protocols. Check the underlying allocation before investing.
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Next step
Open the page for the vault you are about to invest in and look at its strategy description or yield source section. If it does not clearly explain where the yield comes from, do not invest. If it cannot even explain where the money comes from, how can you expect it to keep your money safe?
