The Three Sources of Yield: Real, Inflationary, and Speculative
Every DeFi yield comes from one of three sources. Knowing which one you are earning tells you whether the yield is sustainable.
The single most useful framework for evaluating any DeFi yield opportunity is to ask: which of three sources is producing the yield? Real yield is paid by users of a protocol from value they create. Inflationary yield is paid by minting new units of a token, diluting existing holders. Speculative yield is paid from the protocol's treasury or balance-sheet bets that may or may not pay off. Confusing them is the most common reason for being surprised by yield collapse.
Real Yield
- Source: actual revenue generated by the protocol — trading fees, lending interest, staking commissions
- Examples: Uniswap LP fees, Aave deposit yield (from borrower interest), Lido staking commission share, GMX/Hyperliquid fee distributions to stakers
- Stability: as durable as the protocol's volume — declines if usage declines but does not collapse to zero
- Test: trace the yield to a paying user — if no user is paying it, it is not real yield
- Long-term sustainable: yes — these protocols can pay this yield indefinitely as long as users keep using them
Inflationary Yield
- Source: protocol mints new units of its own token to reward stakers/LPs/farmers
- Examples: most early-stage DEX farming programs, governance-token emission schedules, point programs that later convert to tokens
- Stability: the yield is real only to the extent that the new tokens hold their value — emissions usually outpace adoption, so the dollar-value yield collapses
- Test: if everyone who earns the inflationary yield sells immediately, what is the realised return? — this is the actual risk-adjusted yield
- Long-term sustainable: rarely — inflationary programs are usually bootstrapping mechanisms, not equilibrium states
Speculative Yield
- Source: protocol treasury, leveraged balance-sheet bets, or 'this APY assumes a positive event'
- Examples: leveraged stablecoin strategies that pay 25% APY (depends on funding-rate regime continuing), points programs that promise 'TGE airdrop value', restaking strategies that pay 'expected rewards' from unlaunched tokens
- Stability: zero — the yield is contingent on a future event playing out as advertised
- Test: ask 'where does the dollar I am earning come from today?' — if the answer is 'expected value of future X', it is speculative
- Long-term sustainable: only if the underlying bet pays off — otherwise it is a marketing number
How to Use the Framework
Build a portfolio of yields with explicit allocation across the three sources. Real yield should be the foundation — it is the lowest-volatility, longest-tail income source. Inflationary yield is fine in moderation as long as you can monitor token emissions and exit before dilution destroys the dollar value. Speculative yield should be a small, time-bounded allocation — and you should size it by 'what is the bet I am taking?' rather than by the headline APY.
How Steyble Tags Yield
Steyble's vault and yield surface tags every opportunity with one of three labels — Real, Inflationary, or Speculative — and shows the actual paying source for each. The framework is part of the UI, not buried in documentation. The goal is that no Steyble user is surprised by the difference between an advertised APY and the realised return six months later.