A rate is useful only when its definition travels with it. Remove the type, period, fees, method, source, or time, and a precise-looking percentage can describe the wrong thing.
This is a reading method for public observations. It is not a return forecast or a substitute for assessing the vault behind the rate.
A rate is an observation, not an outcome
A published rate describes a source reading under a stated method and window. It does not know a depositor's entry time, exit time, costs, or realised share-price path.
Incentives, utilisation, asset prices, liquidity, fees, and allocation can change after the observation. Annualising a reading does not make those conditions durable.
Read the percentage as evidence about a period, not as a promise about the next one.
Identify APR or APY
APR and APY answer different questions. APR annualises a rate without adding compounding unless its stated method says otherwise.
APY includes a compounding convention or follows a source method that does. The frequency and assumptions belong with the value.
Do not infer APY from APR when the source does not publish a convention. The honest result is unavailable, not a calculated substitute.
Fix the measurement window
A rate needs a defined observation window. A trailing seven-day reading, a trailing thirty-day reading, and an all-time reading can respond differently to the same event.
Short windows may reflect recent conditions quickly. Longer windows can smooth them. Neither is automatically more representative of what comes next.
For an all-time value, ask when the series begins and whether the product, fee schedule, or strategy changed during it.
Establish fee and compounding treatment
Determine whether the observation is gross or net and which fees are included. Management fees, performance fees, protocol costs, and incentives may be treated differently by each source.
The word “net” is not complete on its own. It needs a method that names the deductions and the period over which they were applied.
For APY, read the compounding frequency and what is assumed to be reinvested. A convention is part of the metric, not a footnote to it.
Check source, observed-at time, and freshness
The source tells you who produced the reading. The observed-at time tells you when it was collected. Freshness tells you whether that age remains inside the publication policy.
These fields do not certify correctness. They make the evidence traceable and show when a reader should return to the source.
A stale value can remain the last complete reading without becoming current. Label and age must travel together.
Compare only like with like
Before ranking two rates, align rate type, window, fee basis, compounding treatment, source method, observation time, and deposit asset.
If any field differs, describe the difference before comparing the values. A larger percentage under another method is not a clean performance ranking.
Unavailable data must stay outside the ranking. Zero is a measured value; it is not a replacement for a missing observation.
Move from the rate to the vault decision
A rate does not describe authority, concentration, collateral, smart-contract exposure, liquidity, or the route out.
After reading the metric, inspect the mandate and positions that produced it. Ask which conditions could change both the rate and the ability to exit.
The curation dashboard keeps rate fields beside source and risk context. The performance disclaimer records the boundary between observation and outcome.