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# Borrowing

:::warning
You're reading the legacy **v2** documentation. For current Parallel features, see [v3](/products/parallel-v3).
:::

Borrowers can repay or borrow more PAR/paUSD at any time, within the limits of the MCR. Borrowing alters the total supply of outstanding PAR/paUSD. When one borrows, the Vaults contract mints new PAR/paUSD tokens for them.

![](/images/-MeOONh2d7zIEPYJ5oQ4.png)

Borrowers can continue to mint PAR/paUSD as long as they deposit a greater value of collateral in their vault. This guarantees that all outstanding PAR/paUSD are fully backed by sufficient collateral.