# Use-case

While the use-case of Boost and Repay is self-explanatory in nature, we can still cover examples in which the tools would be utilized.

<details>

<summary>Boost Use-Case</summary>

Let's use an example where we have:

* 20 ETH collateral
* 35,000 DAI debt

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2FQ6FYWZBG6mmocXIYO3z4%2FScreenshot%202025-10-31%20145412.png?alt=media&#x26;token=d3c0a1cc-ef02-4313-87fa-51f43c738d6a" alt=""><figcaption></figcaption></figure>

ETH's current price is at $3,836.91 - with the Safety Ratio at 176.52%

If ETH's price starts increasing and reaches $4,000 - we're looking to increase the amount of ETH we have before a potential bull run.

We can get this done in one transaction by using the "Boost" tool located in the "Leverage" tab:

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2FuR6NtChzSHDKns4Y1kxL%2FScreenshot%202025-10-31%20145620.png?alt=media&#x26;token=75a60508-5ba2-49c9-bf5e-872ed87a4313" alt=""><figcaption></figcaption></figure>

We just need to input how much DAI's worth of ETH we'd like to borrow and add to our position's supplied collateral. So let's input $8,000 of DAI:

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2FUFjKevoVNX6MjGZYWGAy%2FScreenshot%202025-10-31%20145747.png?alt=media&#x26;token=ff5cc240-2112-4405-bfec-a78c7b3e801d" alt=""><figcaption></figcaption></figure>

As we input the amount we'd like to boost, the UI will update to show a preview of what your position will look like before you actually execute the transaction.&#x20;

Clicking "Boost" will show you a pop-up window:

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2FaPnczu3yiN1AYIc5JIhV%2FScreenshot%202025-10-31%20145840.png?alt=media&#x26;token=d8c270d1-2804-47e5-8af2-94f6b6356b6f" alt=""><figcaption></figcaption></figure>

From here, you'll see the amount of ETH you'll be adding based on the market rate - along with the option to choose your preferred Exchange route and Slippage limit.\
\
You'll also be provided with all additional fees associated with the transaction under "Additional info:"

If everything looks good, press "Boost", sign the transaction, and you'll successfully increase your exposure to ETH in a single transaction - increasing your profits if ETH's price continues to surge.

</details>

<details>

<summary>Repay Use-Case</summary>

Let's use an example where we have:

* 22.07 ETH collateral
* 43,000 DAI debt

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2FrpXNvrI8CjqPm08J067P%2FScreenshot%202025-10-31%20150646.png?alt=media&#x26;token=ee1df961-7635-427d-9b53-c4e51dfc65a6" alt=""><figcaption></figcaption></figure>

ETH's current price is at $3,836.91 - with the Safety Ratio at 158.57%

If ETH's price starts decreasing and reaches $3,500 - our position is going to start nearing a dangerous Safety Ratio. Based on the Safety Ratio calculations, ETH at $3,500 would put this position's Safety Ratio at 146%

So, we'd like to ensure we move back to a more comfortable Safety Ratio with the Repay tool:

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2Fw0509OrlvyqAubf9WoGl%2FScreenshot%202025-10-31%20150702.png?alt=media&#x26;token=85640e3d-d6c3-475c-b5cd-379c46f0e5b7" alt=""><figcaption></figcaption></figure>

We just need to input how much of our ETH collateral we'd like to swap into the DAI debt and repay part of our debt in a single transaction:

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2FnHTY14lvKPJnzIhY4iif%2FScreenshot%202025-10-31%20150738.png?alt=media&#x26;token=83fc195f-ad6c-4e75-a5e6-5c9c3c6cff92" alt=""><figcaption></figcaption></figure>

As we input the amount we'd like to repay, the UI will update to show a preview of what your position will look like before you actually execute the transaction.&#x20;

Clicking "Repay" will show you a pop-up window:

<figure><img src="https://2276946674-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fo1t7pGS5d15WeQzoQ3Fe%2Fuploads%2FlLZ7CwlRHtDN7ITvyeIm%2FScreenshot%202025-10-31%20150827.png?alt=media&#x26;token=a20a7188-aa9c-4d02-8a86-deefeaec35fd" alt=""><figcaption></figcaption></figure>

From here, you'll see the amount of DAI you'll be repaying based on the market rate - along with the option to choose your preferred Exchange route and Slippage limit.\
\
You'll also be provided with all additional fees associated with the transaction under "Additional info:"

If everything looks good, press "Repay", sign the transaction, and you'll successfully repay part of your debt using collateral from your position in a single transaction - ensuring you're safer from liquidation in case ETH's price continues to crash.

</details>

***

## Related Articles:

* [Boost & Repay](https://help.defisaver.com/features/boost-and-repay)
* [Fees](https://help.defisaver.com/features/boost-and-repay/fees)
* [Compatibility](https://help.defisaver.com/features/boost-and-repay/compatibility)