# Exchange Rates

MTS has a system currency which is used for defining liability limits, calculating current liabilities, showing amounts in reports, etc.

MTS converts every stake value other than the system currency at the bet acceptance time.

Currently, the MTS system currency is the euro.

As a source of the exchange rates, MTS uses the **OpenExchange service** ([https://openexchangerates.org](https://openexchangerates.org/)). Rates are retrieved from the web resource and updated in MTS every full hour.

**Rates are applied in the following way:**

* Rates are considered up to six decimal places.
* At the ticket level, the rate at the bet acceptance time is used to convert the stake into the system currency.
* Winning amounts are calculated based on the converted stakes at the bet acceptance time.

MTS supports the currencies listed in <https://docs.openexchangerates.org/reference/supported-currencies>.\
In addition to the listed currencies, MTS supports mBTC, where 1 mBTC represents one thousandth of a Bitcoin (0.001 BTC).

{% hint style="danger" %}
**Warning**

The client must always submit stakes in punter's local currency.
{% endhint %}


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