---
title: Track transactions - Android
description: Track transactions with the Contentsquare Android SDK
lastUpdated: 04 May 2026
source_url:
  html: https://docs.contentsquare.com/en/csq-sdk-android/experience-analytics/track-transactions/
  md: https://docs.contentsquare.com/en/csq-sdk-android/experience-analytics/track-transactions/index.md
---

> Documentation index: https://docs.contentsquare.com/llms.txt
> Use this file to discover all available pages before exploring further.

To associate a user's session with their potential purchases (and corresponding revenue), you must send the transaction via a dedicated API. For each transaction, we send:

* Price (mandatory)
* Currency (mandatory)
* Transaction ID (optional)

```kotlin
import com.contentsquare.api.model.Transaction
import com.contentsquare.api.contract.Currency


val transaction = Transaction(430.99f, Currency.EUR, "my_id")
CSQ.trackTransaction(transaction)
```

Warning

**Each transaction must only be sent once**. A common mistake is to trigger the sending when the confirmation screen is displayed. This leads to triggering the transaction each time the user puts the app in background and then in foreground on the confirmation screen.

## Currency

The `Currency` enum provides a list of all supported currencies, conforming to the [ISO 4217 ↗](https://en.wikipedia.org/wiki/ISO_4217#List_of_ISO_4217_currency_codes) standard.

```kotlin
import com.contentsquare.api.contract.Currency


val currency = Currency.USD
val currencyFromString = Currency.fromString("USD")
val currencyFromInteger = Currency.fromInteger(840)


// string or integer ISO code can also be retrieved from the enum value
Currency.USD.stringCode // "USD"
```

Note

If the currency passed for conversion doesn't match a supported currencies, the SDK will send a currency value of `-1`. It will be processed as the default currency of the project.

## Float precision

The `Transaction` API uses a `Float` to represent the transaction value, which means very large numbers may be **rounded** when stored or serialized.

For example, `1234567890f` becomes `1234567936f`.

This behavior is normal for floating-point values and does not affect regular currency amounts (`0.99`, `430.00`, `100000.00`).