What is a collateral swap in DeFi?

A collateral swap exchanges the asset backing a loan for a different asset without closing the loan — for example moving from a volatile token to a stablecoin or a higher liquidation-threshold asset to reduce liquidation risk. It incurs swap fees, slippage, and gas.

How is the health factor calculated?

Using the Aave-style formula: collateral value × liquidation threshold ÷ debt. A health factor above 1 means the position is safe from liquidation; below 1 it can be liquidated. Higher is safer.

Why can a swap lower my health factor?

The swap costs (fees, slippage, gas) reduce your post-swap collateral value. If those costs outweigh the benefit of a higher liquidation threshold on the new asset, the resulting health factor can be lower than before, even though the new asset is safer per dollar.

What does the break-even period mean?

It is the number of days the swap's daily benefit — such as a lower borrow rate or amortised liquidation-penalty avoidance — must persist to recover the one-off cost of swapping. Below that horizon, the swap costs more than it saves.

Are the slippage and gas figures exact?

No. They are your estimates. Always pull a live quote from your DEX aggregator and a current gas oracle before executing, because both can move quickly with market volatility and network congestion.

Crypto Collateral Swap & Refinancing Cost Calculator

This calculator works out the full cost of swapping the collateral behind a DeFi loan — protocol fees, slippage, and gas — then shows how the swap changes your health factor and how long it takes to break even against the risk-reduction benefit.

How it works

The total cost of a collateral swap has three parts:

protocol cost = collateral value × protocol fee %
slippage cost = collateral value × slippage %
gas cost      = fixed USD estimate
total cost    = protocol + slippage + gas

Those costs come out of your collateral, so your post-swap collateral is the original value minus the total cost. The health factor (Aave-style) is:

health factor = collateral × liquidation threshold ÷ debt

A factor above 1 is safe; the higher the better. Because the swap consumes collateral, moving to a higher-threshold asset does not always raise the health factor — the cost can offset the gain.

Break-even

If the swap delivers a daily benefit (a lower borrow rate, or an amortised reduction in expected liquidation penalty), the break-even is:

break-even days = total cost ÷ daily benefit

Below that horizon the swap is not worth it; above it, the swap pays for itself.

Notes

Slippage and gas are estimates — confirm a live quote from your DEX aggregator and a gas oracle before you sign the transaction, especially during volatile markets. Liquidation thresholds vary by protocol and asset, so read them from the protocol’s risk parameters. All calculation runs locally in your browser; nothing is sent anywhere.