# Boost

Depositing as a Liquidity Provider for the Feeder Pools, or staking into Save Vault accrues additional MTA rewards. These rewards can be increased with a boost. A boost can be acquired by staking MTA in the Staking app.

{% hint style="info" %}
A boost from staking can be applied to a maximum of 6 vault contracts.
{% endhint %}

{% content-ref url="../mta-staking/staking-v2" %}
[staking-v2](https://docs.mstable.org/using-mstable/mta-staking/staking-v2)
{% endcontent-ref %}

The multiplier is set by default to`1.00x`and increases with the amount of MTA that is staked in the staking contract. Additionally, any multipliers earned from quests also increase that balance. The resulting balance is then denoted as `vMTA` (voting MTA). This represents voting, earning and boosting power.

vMTA itself is derived from both staking tokens `vMTA = stkBPT + stkMTA.` Normally, a user would only stake one of these. [Read more in Staking V2.](https://docs.mstable.org/using-mstable/mta-staking/staking-v2)

![Earning Power Calculator](https://3314856697-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MgKiKW1UaPZfO4BHc_y%2F-Ml9Oy2toSyyoum4-T7j%2F-Ml9n7CHnTX_MkaHdzWt%2FScreen%20Shot%202021-10-04%20at%2017.14.45.png?alt=media\&token=1977a512-296b-4d02-b9ca-980c664f059e)

Using `vMTA` the boost is then calculated as:

```
boost = min(3e18, max(1e18, 98e16 + 
        (9 * min(vMTA/12, 600000e18) / (deposit*priceCoeff/1e18)^(3/4)))
```

* With `deposit` as the balance of the vault
* and `priceCoeff` as the pool dependent price coefficient to denominate the rough value of a vault token.