Fixed vs Variable Yield in Crypto: Which Is Right for You?
What is the difference between fixed and variable yield in crypto?
Fixed yield locks in a known return for a set term, so you know exactly what you will earn regardless of market conditions. Variable yield floats with supply and demand, changing block by block — it can be higher when demand is strong but is unpredictable. Fixed yield trades upside for certainty; variable yield trades certainty for potential upside.
Key takeaways
- Fixed yield = certainty. You lock a rate and know your payout in advance.
- Variable yield = flexibility and potential upside, but no guarantees.
- Most DeFi yield is variable by default; fixed yield needs a tool like yield tokenization.
- On Stellar you can hold variable (Blend) or lock fixed (Spield).
- Neither is "better" — it depends on whether you value predictability or upside.
Fixed vs variable yield at a glance
| Fixed yield | Variable yield | |
|---|---|---|
| Rate | Locked for the term | Changes continuously |
| Predictability | You know your payout | Unknown until realized |
| Upside | Capped at the locked rate | Can rise if demand spikes |
| Effort | Set once and forget | May want to monitor and move |
| Best when | You want to plan / de-risk | Rates are high and you want max yield |
| On Stellar | Spield fixed-rate vault / buy PT | Lend on Blend |
When should you choose fixed yield?
Choose fixed yield when certainty matters more than squeezing out the last basis point — for example, if you are planning around a known payout, want to de-risk in a volatile market, or simply prefer set-and-forget. Locking a fixed rate is the on-chain equivalent of buying a bond or a certificate of deposit.
When is variable yield the better choice?
Choose variable yield when rates are high and you want to capture that upside, or when you are comfortable actively managing your position. Variable yield can outperform fixed in strong markets, but you accept that the rate — and your return — can fall at any time.
Is fixed yield safer than variable yield?
Fixed yield removes rate uncertainty, so your return is predictable if held to maturity, but it does not remove smart-contract or market risk. Variable yield adds rate uncertainty on top of those same risks. Fixed is more predictable, not automatically "safer" in every sense.
How do I lock a fixed yield in crypto?
You lock a fixed yield by buying a Principal Token at a discount and holding it to maturity, or by depositing into a fixed-rate vault. On Stellar, Spield offers both, built on real Blend lending yield.