In Aave Labs' July 2025 prelaunch design for V4, two loans in the same token could carry different interest bills because they used different collateral.

The LINK example had a 30% risk premium. If the shared base rate added $100 of interest to a loan, that premium would add another $30, for $130 in total. It was a percentage of the base interest, not an extra 30 percentage points on the annual rate. The numbers illustrate that design, rather than today's borrowing terms.

Source: Aave Labs, July 24, 2025.
https://aave.com/blog/aave-v4-risk-premiums

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