Apply the new asset threshold correctly
Additional value equals max(0, (target health factor × debt − existing adjusted collateral) ÷ new collateral threshold). The numerator is the missing adjusted collateral. Dividing by the new asset's threshold translates that shortfall into an unadjusted deposit value. Use a positive new threshold and a positive target. Applying the old portfolio's average threshold to a different top-up asset would misstate the required deposit.
Compare two hypothetical top-up assets
Suppose existing adjusted collateral is $9,600, debt is $8,000, and the target ratio is 1.50. Required adjusted collateral is $12,000, leaving a $2,400 shortfall. With an 80% threshold on the new asset, additional value is $3,000. An asset with a 60% threshold would require $4,000. Both reach the same modeled target because the deposited values differ while their liquidation-adjusted contributions are equal.
Check eligibility and valuation assumptions
The output is a collateral value, not a token quantity. Converting to units requires an asset price. The model assumes the new collateral is eligible and its threshold applies to the position as entered; supply caps, collateral enablement, and account modes can change that relationship. Debt and existing prices remain constant. If existing adjusted collateral already meets the target, required top-up is zero, even if depositing more would raise the ratio further.