diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e25d29..661f175 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,8 +4,28 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+<a name="v3.1.0"></a>
+## v3.1.0 (2018-01-17)
+
+
+#### Bug Fixes
+
+* **Accounts**: Resolves Warning on account creation. ([4a712974](https://github.com/moip/moip-sdk-php/commit/4a712974))
+
+#### Features
+
+* **Orders**: Adds item category argument into `addItem()` method. ([749fa85e](https://github.com/moip/moip-sdk-php/commit/749fa85e))
+
+* **Accounts**: Adds `getPasswordLink()` method. ([fe2c4d6d](https://github.com/moip/moip-sdk-php/commit/fe2c4d6d))
+
+* **Balances**: Get balances of Moip Account. ([37b085a8](https://github.com/moip/moip-sdk-php/commit/37b085a8))
+
+* **Transfers**:
+  * Create a transfer to a saved bank account. ([749fa85e](https://github.com/moip/moip-sdk-php/commit/749fa85e))
+  * Adds set and get `ownId` to a transfer. ([1c297d14](https://github.com/moip/moip-sdk-php/commit/1c297d14))
+
 <a name="v3.0.0"></a>
-## v3.0.0 (2018-01-04)
+# [](https://github.com/moip/moip-sdk-php/compare/v2.2.0...v3.0.0) (2018-01-04)
 
 
 #### Bug Fixes
diff --git a/README.md b/README.md
index 29961ad..6baa2e2 100644
--- a/README.md
+++ b/README.md
@@ -59,10 +59,10 @@
     - [Cartão de crédito](#cartão-de-crédito-1)
       - [Valor Total](#valor-total)
       - [Valor Parcial](#valor-parcial)
-    - [Conta Bancária](#conta-bancária)
+    - [Conta bancária](#conta-bancária)
       - [Valor Total](#valor-total-1)
       - [Valor Parcial](#valor-parcial-1)
-    - [Consulta](#consulta-1)
+    - [Consulta](#consultar-reembolso)
   - [OAuth (Moip Connect)](#oauth-moip-connect)
     - [Solicitar permissões de acesso ao usuário](#solicitar-permissões-de-acesso-ao-usuário)
     - [Gerando access token OAuth](#gerando-access-token-oauth)
@@ -78,13 +78,26 @@
     - [Consulta](#consulta-1)
     - [Verifica se usuário já possui Conta Moip](#verifica-se-usuário-já-possui-conta-moip)
     - [Obter chave pública de uma Conta Moip](#obter-chave-pública-de-uma-conta-moip)
+  - [Saldo Moip](#saldo-moip)
+    - [Consulta](#consultar-saldos)
+  - [Conta Bancária](#conta-bancária-1)
+    - [Criação](#criar-conta-bancária)
+    - [Consulta](#consultar-conta-bancária)
+    - [Listagem](#listar-contas-bancárias)
+    - [Atualização](#atualizar-conta-bancária)
+    - [Deletar](#deletar-conta-bancária)
+  - [Transferência](#transferência)
+    - [Criação](#criando/executando-uma-transferência)
+    - [Consulta](#consultar-transferência)
+    - [Listagem](#listar-transferências)
+    - [Reversão](#reverter-transferência)
   - [Preferências de Notificação](#preferências-de-notificação)
     -  [Criação](#criação-2)
-    -  [Consulta](#consulta-4)
+    -  [Consulta](#consulta-5)
     -  [Exclusão](#exclusão)
     -  [Listagem](#listagem)
   - [Webhooks](#webhooks)
-    - [Consulta](#consulta-5)
+    - [Consulta](#consulta-6)
 - [Packages](#packages)
 - [Tratamento de exceções](#tratamento-de-exceções)
 - [Documentação](#documentação)
@@ -260,11 +273,11 @@ Após criar o pedido basta criar um pagamento nesse pedido.
 Para realizar o pagamento, via cartão de crédito, utilizando o cartão de um terceiro (quando o cliente não é o portador do cartão que será utilizado), é necessário que estes dados sejam diferenciados e informados corretamente, para cada etapa do fluxo.
 
 ```php
-$holder = $this->moip->holders()->setFullname('Jose Silva')
-    ->setBirthDate(\DateTime::createFromFormat($this->date_format, $this->date_string))
+$holder = $moip->holders()->setFullname('Jose Silva')
+    ->setBirthDate("1990-10-10")
     ->setTaxDocument('22222222222', 'CPF')
     ->setPhone(11, 66778899, 55)
-    ->setAddress(Holder::ADDRESS_BILLING, 'Avenida Faria Lima', '2927', 'Itaim', 'Sao Paulo', 'SP', '01234000', 'Apt 101');
+    ->setAddress('BILLING', 'Avenida Faria Lima', '2927', 'Itaim', 'Sao Paulo', 'SP', '01234000', 'Apt 101');
 ```
 ##### Com hash
 > Para mais detalhes sobre a geração de hash com os dados do cartão [consulte a documentação.](https://dev.moip.com.br/docs/criptografia-de-cartao)
@@ -404,6 +417,12 @@ $refund = $payment->refunds()
     );
 print_r($refund);
 ```
+
+### Consultar reembolso
+```php
+$refund = $payment->refunds()->get($refund_id);
+```
+
 ## OAuth (Moip Connect)
 ### Solicitar permissões de acesso ao usuário
 Para solicitar as permissões você deverá invocar o método getAuthUrl (que monta a URL) e redirecionar o usuário para a URL gerada. O usuário deverá conceder a permissão e então ele será redirecionado para a URL determinada pelo seu App e passada como atributo para o objeto Connect.
@@ -559,6 +578,55 @@ $keys = $moip->keys()->get();
 print_r($keys);
 ```
 
+## Saldo Moip
+O Saldo é a composição de valores atuais disponíveis, indisponíveis (bloqueados) e futuros de uma determinada **Conta Moip**.
+
+> Esta API está na versão 2.1, contendo o _header_ **Accept**, com o valor `application/json;version=2.1`.
+### Consultar saldos
+```php
+$balances = $moip->balances()->get();
+```
+
+_Requer autenticação `OAuth`._
+
+## Conta Bancária
+A Conta bancária é o domicílio bancário de uma determinada Conta Moip. Esta API permite a criação, a consulta e a alteração dos dados de uma Conta Bancária.
+
+### Criar Conta Bancária
+```php
+$bank_account = $moip->bankaccount()
+    ->setBankNumber('237')
+    ->setAgencyNumber('12345')
+    ->setAgencyCheckNumber('0')
+    ->setAccountNumber('12345678')
+    ->setAccountCheckNumber('7')
+    ->setType('CHECKING')
+    ->setHolder('Demo Moip', '622.134.533-22', 'CPF')
+    ->create($moip_account_id);
+```
+
+### Consultar Conta Bancária
+```php
+$bank_account = $moip->bankaccount()->get($bank_account_id);
+```
+
+### Listar Contas Bancárias
+```php
+$bank_accounts = $moip->bankaccount()->getList($account_id)->getBankAccounts();
+```
+
+### Atualizar Conta Bancária
+```php
+$bank_account = $moip->bankaccount()
+    ->setAccountCheckNumber('8')
+    ->update($bank_account_id);
+```
+
+### Deletar Conta Bancária
+```php
+$moip->bankaccount()->delete($bank_account_id);
+```
+
 ## Preferências de notificação
 
 ### Criação
@@ -612,8 +680,11 @@ $moip->webhooks()->get(new Pagination(10, 0), 'ORD-ID', 'ORDER.PAID');
 ```
 
 ## Transferência
+A Transferência é uma movimentação de fundos entre uma Conta Moip e outra conta de pagamento (pode ser uma Conta bancária ou uma determinada Conta Moip).
 
 ### Criando/executando uma transferência
+#### Por conta bancária
+
 ```php
 $amount = 500;
 $bank_number = '001';
@@ -632,82 +703,37 @@ $transfer = $moip->transfers()
 print_r($transfer);
 ```
 
-### Consulta
-#### Transferência específica
-```php
-$transfer_id = 'TRA-28HRLYNLMUFH';
-$transfer = $this->moip->transfers()->get($transfer_id);
-
-print_r($transfer);
-```
-
-#### Todas transferências
-##### Sem paginação
-```php
-$transfers = $this->moip->transfers()->getList();
-```
-
-##### Com paginação
+Para realizar uma transferência utilizando uma conta bancária já cadastrada:
 ```php
-$transfers = $this->moip->transfers()->getList(new Pagination(10,0));
+$transfer = $moip->transfers()
+    ->setTransfersToBankAccount($amount, $bank_account_id)
+    ->execute();
 ```
 
-### Reverter
+### Consultar transferência
 ```php
 $transfer_id = 'TRA-28HRLYNLMUFH';
+$transfer = $moip->transfers()->get($transfer_id);
 
-$transfer = $this->moip->transfers()->revert($transfer_id);
-```
-
-## Contas bancárias
-
-### Criação
-```php
-$account_id = 'MPA-05E8C79EAAAA';
-$bank_account = $moip->bankaccount()
-        ->setBankNumber('237')
-        ->setAgencyNumber('12345')
-        ->setAgencyCheckNumber('0')
-        ->setAccountNumber('12345678')
-        ->setAccountCheckNumber('7')
-        ->setType('CHECKING')
-        ->setHolder('Demo Moip', '622.134.533-22', 'CPF')
-        ->create($account_id);
-
-print_r($bank_account);
-```
-
-### Consulta
-#### Conta bancária específica
-```php
-$bank_account_id = 'BKA-397X21X1G6LT';
-$bank_account = $moip->bankaccount()->get($bank_account_id);
-
-print_r($bank_account);
+print_r($transfer);
 ```
 
-#### Todas contas bancárias
+### Listar transferências
+#### Sem paginação
 ```php
-$account_id = 'MPA-05E8C79EAAAA';
-$bank_accounts = $moip->bankaccount()->getList($account_id)->getBankAccounts();
-
-print_r($bank_accounts);
+$transfers = $moip->transfers()->getList();
 ```
 
-### Exclusão
+#### Com paginação
 ```php
-$bank_account_id = 'BKA-397X21X1G6LT';
-$moip->bankaccount()->delete($bank_account_id);
+$transfers = $moip->transfers()->getList(new Pagination(10,0));
 ```
 
-### Atualização
+### Reverter transferência
 ```php
-$bank_account_id = 'BKA-397X21X1G6LT';
-$bank_account = $moip->bankaccount()->get($bank_account_id);
-$bank_account->setAccountCheckNumber('7');
-$bank_account->update();
+$transfer_id = 'TRA-28HRLYNLMUFH';
 
-print_r($bank_account);
+$transfer = $moip->transfers()->revert($transfer_id);
 ```
 
 ## Tratamento de Exceções
diff --git a/src/Moip.php b/src/Moip.php
index ac4968a..9ad12a1 100644
--- a/src/Moip.php
+++ b/src/Moip.php
@@ -4,6 +4,7 @@
 
 use Moip\Contracts\Authentication;
 use Moip\Resource\Account;
+use Moip\Resource\Balances;
 use Moip\Resource\BankAccount;
 use Moip\Resource\Customer;
 use Moip\Resource\Entry;
@@ -49,7 +50,7 @@ class Moip
      *
      * @const string
      */
-    const CLIENT_VERSION = '3.0.0';
+    const CLIENT_VERSION = '3.1.0';
 
     /**
      * Authentication that will be added to the header of request.
@@ -257,6 +258,16 @@ public function bankaccount()
         return new BankAccount($this);
     }
 
+    /**
+     * Create a new Balances instance.
+     *
+     * @return Balances
+     */
+    public function balances()
+    {
+        return new Balances($this);
+    }
+
     /**
      * Get the endpoint.
      *
diff --git a/src/Resource/Account.php b/src/Resource/Account.php
index 4345fca..db20109 100644
--- a/src/Resource/Account.php
+++ b/src/Resource/Account.php
@@ -54,6 +54,7 @@ public function initialize()
         $this->data->email = new stdClass();
         $this->data->person = new stdClass();
         $this->data->person->alternativePhones = [];
+        $this->data->businessSegment = new stdClass();
         $this->data->type = self::ACCOUNT_TYPE;
     }
 
@@ -363,6 +364,36 @@ public function getType()
         return $this->getIfSet('type', $this->data);
     }
 
+    /**
+     * Get business segment id.
+     *
+     * @return int id.
+     */
+    public function getBusinessSegmentId()
+    {
+        return $this->getIfSet('id', $this->data->businessSegment);
+    }
+
+    /**
+     * Get business segment name.
+     *
+     * @return string name.
+     */
+    public function getBusinessSegmentName()
+    {
+        return $this->getIfSet('name', $this->data->businessSegment);
+    }
+
+    /**
+     * Get business segment mcc.
+     *
+     * @return int mcc.
+     */
+    public function getBusinessSegmentMcc()
+    {
+        return $this->getIfSet('mcc', $this->data->businessSegment);
+    }
+
     /**
      * Get transparent account (true/false).
      *
@@ -383,6 +414,16 @@ public function getCreatedAt()
         return $this->getIfSet('createdAt', $this->data);
     }
 
+    /**
+     * Get link to set the password of created account.
+     *
+     * @return string
+     */
+    public function getPasswordLink()
+    {
+        return $this->getIfSet('href', $this->data->_links->setPassword);
+    }
+
     /**
      * Mount the seller structure from account.
      *
@@ -434,8 +475,21 @@ protected function populate(stdClass $response)
 
         $account->data->person->alternativePhones = $this->getIfSet('alternativePhones', $person);
 
+        $businessSegment = $this->getIfSet('businessSegment', $response);
+
+        $account->data->businessSegment->id = $this->getIfSet('id', $businessSegment);
+        $account->data->businessSegment->name = $this->getIfSet('name', $businessSegment);
+        $account->data->businessSegment->mcc = $this->getIfSet('mcc', $businessSegment);
+
         $account->data->company = $this->getIfSet('company', $response);
-        $account->data->_links = $this->getIfSet('_links', $response);
+        $account->data->_links = new stdClass();
+
+        $_links = $this->getIfSet('_links', $response);
+        $account->data->_links->setPassword = new stdClass();
+
+        $setPassword = $this->getIfSet('setPassword', $_links);
+        $account->data->_links->setPassword->href = $this->getIfSet('href', $setPassword);
+
         $account->data->type = $this->getIfSet('type', $response);
         $account->data->id = $this->getIfSet('id', $response);
         $account->data->accessToken = $this->getIfSet('accessToken', $response);
diff --git a/src/Resource/Balances.php b/src/Resource/Balances.php
new file mode 100644
index 0000000..3ebc3a3
--- /dev/null
+++ b/src/Resource/Balances.php
@@ -0,0 +1,88 @@
+<?php
+
+namespace Moip\Resource;
+
+use stdClass;
+
+/**
+ * Class Balances.
+ */
+class Balances extends MoipResource
+{
+    /**
+     * Path balances API.
+     *
+     * @const string
+     */
+    const PATH = 'balances';
+
+    /**
+     * Initialize a new instance.
+     */
+    public function initialize()
+    {
+        $this->data = new stdClass();
+        $this->data->unavailable = [];
+        $this->data->future = [];
+        $this->data->current = [];
+    }
+
+    /**
+     * Populate this instance.
+     *
+     * @param stdClass $response response object
+     *
+     * @return mixed|Balances
+     */
+    protected function populate(stdClass $response)
+    {
+        $balances = clone $this;
+        $balances->data->unavailable = $this->getIfSet('unavailable', $response) ?: [];
+        $balances->data->future = $this->getIfSet('future', $response) ?: [];
+        $balances->data->current = $this->getIfSet('current', $response) ?: [];
+
+        return $balances;
+    }
+
+    /**
+     * Get all balances.
+     *
+     * @return stdClass
+     */
+    public function get()
+    {
+        $path = sprintf('/%s/%s', MoipResource::VERSION, self::PATH);
+
+        return $this->getByPath($path, ['Accept' => static::ACCEPT_VERSION]);
+    }
+
+    /**
+     * Get unavailable balances. Returns an array of objects with the amount and currency.
+     *
+     * @return array
+     */
+    public function getUnavailable()
+    {
+        return $this->data->unavailable;
+    }
+
+    /**
+     * Get future balances. Returns an array of objects with the amount and currency.
+     *
+     * @return array
+     */
+    public function getFuture()
+    {
+        return $this->data->future;
+    }
+
+    /**
+     * Get current balances. Returns an array of objects with the amount and currency.
+     *
+     * @return array
+     */
+    public function getCurrent()
+    {
+        return $this->data->current;
+    }
+}
diff --git a/src/Resource/MoipResource.php b/src/Resource/MoipResource.php
index da840cf..a73ca3c 100644
--- a/src/Resource/MoipResource.php
+++ b/src/Resource/MoipResource.php
@@ -24,6 +24,13 @@ abstract class MoipResource implements JsonSerializable
      */
     const VERSION = 'v2';
 
+    /**
+     * Api version content type.
+     *
+     * @cont string
+     */
+    const ACCEPT_VERSION = 'application/json;version=2.1';
+
     /**
      * @var \Moip\Moip
      */
@@ -210,9 +217,10 @@ public function generateListPath(Pagination $pagination = null, Filters $filters
      * Execute a http request. If payload == null no body will be sent. Empty body ('{}') is supported by sending a
      * empty stdClass.
      *
-     * @param string     $path
-     * @param string     $method
-     * @param mixed|null $payload
+     * @param string     $path    request path
+     * @param string     $method  http method
+     * @param mixed|null $payload request body
+     * @param array      $headers request headers
      *
      * @throws Exceptions\ValidationException  if the API returns a 4xx http status code. Usually means invalid data was sent.
      * @throws Exceptions\UnautorizedException if the API returns a 401 http status code. Check API token and key.
@@ -220,14 +228,13 @@ public function generateListPath(Pagination $pagination = null, Filters $filters
      *
      * @return stdClass
      */
-    protected function httpRequest($path, $method, $payload = null)
+    protected function httpRequest($path, $method, $payload = null, $headers = [])
     {
         $http_sess = $this->moip->getSession();
-        $headers = [];
         $body = null;
         if ($payload !== null) {
             $body = json_encode($payload, JSON_UNESCAPED_SLASHES);
-            if ($body) {// if it's json serializable
+            if ($body) {    // if it's json serializable
                 $headers['Content-Type'] = 'application/json';
             } else {
                 $body = null;
@@ -258,13 +265,14 @@ protected function httpRequest($path, $method, $payload = null)
     /**
      * Find by path.
      *
-     * @param string $path
+     * @param string $path    resource path
+     * @param array  $headers request headers
      *
      * @return stdClass
      */
-    public function getByPath($path)
+    public function getByPath($path, $headers = [])
     {
-        $response = $this->httpRequest($path, Requests::GET);
+        $response = $this->httpRequest($path, Requests::GET, null, $headers);
 
         if (is_array($response)) {
             $response = (object) $response;
diff --git a/src/Resource/Orders.php b/src/Resource/Orders.php
index 6585c84..fa6b327 100644
--- a/src/Resource/Orders.php
+++ b/src/Resource/Orders.php
@@ -50,10 +50,11 @@ class Orders extends MoipResource
      * @param int    $quantity Product Quantity.
      * @param string $detail   Additional product description.
      * @param int    $price    Initial value of the item.
+     * @param string category  Product category. see: https://dev.moip.com.br/v2.1/reference#tabela-de-categorias-de-produtos.
      *
      * @return $this
      */
-    public function addItem($product, $quantity, $detail, $price)
+    public function addItem($product, $quantity, $detail, $price, $category = 'OTHER_CATEGORIES')
     {
         if (!is_int($price)) {
             throw new \UnexpectedValueException('Informe o valor do item como inteiro');
@@ -68,7 +69,7 @@ public function addItem($product, $quantity, $detail, $price)
         $item->quantity = $quantity;
         $item->detail = $detail;
         $item->price = $price;
-
+        $item->category = $category;
         $this->data->items[] = $item;
 
         return $this;
diff --git a/src/Resource/Refund.php b/src/Resource/Refund.php
index 0c1cba1..ab86559 100644
--- a/src/Resource/Refund.php
+++ b/src/Resource/Refund.php
@@ -115,6 +115,18 @@ public function getId()
         return $this->getIfSet('id');
     }
 
+    /**
+     * Get a Refund.
+     *
+     * @param string $moip_id Refund id.
+     *
+     * @return stdClass
+     */
+    public function get($moip_id)
+    {
+        return $this->getByPath(sprintf('/%s/%s/%s', MoipResource::VERSION, self::PATH, $moip_id));
+    }
+
     /**
      * Get status from MoIP refund.
      *
diff --git a/src/Resource/Transfers.php b/src/Resource/Transfers.php
index 415485c..404c4a0 100644
--- a/src/Resource/Transfers.php
+++ b/src/Resource/Transfers.php
@@ -52,7 +52,9 @@ protected function initialize()
     protected function populate(stdClass $response)
     {
         $transfers = clone $this;
+
         $transfers->data->id = $this->getIfSet('id', $response);
+        $transfers->data->ownId = $this->getIfSet('ownId', $response);
         $transfers->data->amount = $this->getIfSet('amount', $response);
 
         $transfer_instrument = $this->getIfSet('transferInstrument', $response);
@@ -61,6 +63,7 @@ protected function populate(stdClass $response)
 
         $bank_account = $this->getIfSet('bankAccount', $transfer_instrument);
         $transfers->data->transferInstrument->bankAccount = new stdClass();
+        $transfers->data->transferInstrument->bankAccount->id = $this->getIfSet('id', $bank_account);
         $transfers->data->transferInstrument->bankAccount->type = $this->getIfSet('type', $bank_account);
         $transfers->data->transferInstrument->bankAccount->bankNumber = $this->getIfSet('bankNumber', $bank_account);
         $transfers->data->transferInstrument->bankAccount->agencyNumber = $this->getIfSet('agencyNumber', $bank_account);
@@ -112,6 +115,23 @@ public function setTransfers(
         return $this;
     }
 
+    /**
+     * Set info of transfers to a saved bank account.
+     *
+     * @param int    $amount        Amount
+     * @param string $bankAccountId Saved bank account id.
+     *
+     * @return $this
+     */
+    public function setTransfersToBankAccount($amount, $bankAccountId)
+    {
+        $this->data->amount = $amount;
+        $this->data->transferInstrument->method = self::METHOD;
+        $this->data->transferInstrument->bankAccount->id = $bankAccountId;
+
+        return $this;
+    }
+
     /**
      * Returns transfer.
      *
@@ -122,6 +142,20 @@ public function getTransfers()
         return $this->data;
     }
 
+    /**
+     * Get own request id. external reference.
+     *
+     * @param mixed $ownId id
+     *
+     * @return $this
+     */
+    public function setOwnId($ownId)
+    {
+        $this->data->ownId = $ownId;
+
+        return $this;
+    }
+
     /**
      * Set info of holder.
      *
@@ -212,4 +246,14 @@ public function getId()
     {
         return $this->getIfSet('id');
     }
+
+    /**
+     * Get own request id. external reference.
+     *
+     * @return mixed
+     */
+    public function getOwnId()
+    {
+        return $this->getIfSet('ownId');
+    }
 }
diff --git a/tests/Resource/AccountTest.php b/tests/Resource/AccountTest.php
index 6c57ed4..dc1fb38 100644
--- a/tests/Resource/AccountTest.php
+++ b/tests/Resource/AccountTest.php
@@ -24,6 +24,7 @@ public function testShouldCreateAccount()
             ->setPhone(11, 965213244, 55)
             ->addAlternativePhone(11, 912345678, 55)
             ->setTransparentAccount(false)
+            ->setBusinessSegment(5)
             ->addAddress('Av. Brigadeiro Faria Lima', 2927, 'Itaim', 'São Paulo', 'SP', '01234000', 'Apt. X', 'BRA')
             ->create();
 
@@ -35,6 +36,10 @@ public function testShouldCreateAccount()
         $this->assertEquals('SSP', $account->getIdentityDocumentIssuer());
         $this->assertEquals('2017-10-25', $account->getIdentityDocumentIssueDate());
         $this->assertEquals('RG', $account->getIdentityDocumentType());
+        $this->assertEquals('https://desenvolvedor.moip.com.br/sandbox/AskForNewPassword.do?method=confirm&email=dev.moip%40labs.moip.com.br&code=8e3b306d59907f4a47508913956c96ba', $account->getPasswordLink());
+        $this->assertEquals(5, $account->getBusinessSegmentId());
+        $this->assertEquals('Antiguidades / Negociante de artes / Galerias', $account->getBusinessSegmentName());
+        $this->assertEquals(5971, $account->getBusinessSegmentMcc());
     }
 
     public function testShouldCreateAccountWithCompany()
diff --git a/tests/Resource/BalancesTest.php b/tests/Resource/BalancesTest.php
new file mode 100644
index 0000000..6572c56
--- /dev/null
+++ b/tests/Resource/BalancesTest.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Moip\Tests\Resource;
+
+use Moip\Tests\TestCase;
+
+class BalancesTest extends TestCase
+{
+    public function testShouldGetBalances()
+    {
+        $this->mockHttpSession($this->body_balances);
+
+        $balances = $this->moip->balances()->get();
+        $current = $balances->getCurrent();
+        $future = $balances->getFuture();
+        $unavailable = $balances->getUnavailable();
+
+        $this->assertNotEmpty($current);
+        $this->assertNotEmpty($future);
+        $this->assertNotEmpty($unavailable);
+        $this->assertEquals(44592168, $current[0]->amount);
+    }
+}
diff --git a/tests/Resource/RefundTest.php b/tests/Resource/RefundTest.php
index 8668d3f..521640b 100644
--- a/tests/Resource/RefundTest.php
+++ b/tests/Resource/RefundTest.php
@@ -186,6 +186,21 @@ public function testRefundOrderBankAccountPartialWithResourceId()
         $this->assertEquals('PARTIAL', $refund->getType());
     }
 
+    public function testShouldGetRefund()
+    {
+        $payment = $this->paymentCreditCard();
+
+        $this->mockHttpSession($this->body_payment_refund_full_cc);
+        $refund_id = $payment->refunds()->creditCardFull()->getId();
+
+        $this->mockHttpSession($this->body_payment_refund_full_cc);
+        $refund = $payment->refunds()->get($refund_id);
+
+        $this->assertEquals($refund_id, $refund->getId());
+        $this->assertEquals('FULL', $refund->getType());
+        $this->assertEquals('COMPLETED', $refund->getStatus());
+    }
+
     private function bankAccount()
     {
         return $this->moip->bankaccount()
diff --git a/tests/Resource/TransfersTest.php b/tests/Resource/TransfersTest.php
index 37f473b..ca9ba3a 100644
--- a/tests/Resource/TransfersTest.php
+++ b/tests/Resource/TransfersTest.php
@@ -26,12 +26,45 @@ private function createTransfer()
         return $transfer;
     }
 
+    private function createBankAccount()
+    {
+        $this->mockHttpSession($this->body_bank_account_create);
+
+        $account_id = 'MPA-3C5358FF2296';
+
+        $bank_account = $this->moip->bankaccount()
+            ->setBankNumber('237')
+            ->setAgencyNumber('12345')
+            ->setAgencyCheckNumber('0')
+            ->setAccountNumber('12345678')
+            ->setAccountCheckNumber('7')
+            ->setType('CHECKING')
+            ->setHolder('Demo Moip', '622.134.533-22', 'CPF')
+            ->create($account_id);
+
+        return $bank_account;
+    }
+
     public function testShouldCreateTransfer()
     {
         $transfer = $this->createTransfer();
         $this->assertNotEmpty($transfer->getId());
     }
 
+    public function testShouldCreateTransferWithBankAccountId()
+    {
+        $bank_account = $this->createBankAccount();
+
+        $this->mockHttpSession($this->body_transfers_create);
+
+        $amount = 500;
+        $transfer = $this->moip->transfers()
+            ->setTransfersToBankAccount($amount, $bank_account->getId())
+            ->execute();
+
+        $this->assertNotEmpty($transfer->getId());
+    }
+
     public function testShouldGetTransfer()
     {
         $transfer_id = $this->createTransfer()->getId();
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 4913bf6..afa8ccb 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -141,6 +141,11 @@ abstract class TestCase extends BaseTestCase
      */
     protected $body_bank_account_update;
 
+    /**
+     * @var string response from moip API.
+     */
+    protected $body_balances;
+
     /**
      * @var string holds the last generated customer ownId. In mock mode it'll be always the default, but it changes on sandbox mode.
      */
@@ -243,6 +248,8 @@ public function __construct()
         $this->body_bank_account_list = $this->readJsonFile('jsons/bank_account/list');
 
         $this->body_bank_account_update = $this->readJsonFile('jsons/bank_account/update');
+
+        $this->body_balances = $this->readJsonFile('jsons/balances/get');
     }
 
     /**
@@ -374,8 +381,8 @@ public function createOrder()
         }
 
         $order = $this->moip->orders()->setCustomer($this->createCustomer())
-            ->addItem('Nome do produto', 1, 'Mais info...', 100000)
-            ->addItem('abacaxi', 2, 'Abacaxi de terra de areia', 990)
+            ->addItem('Nome do produto', 1, 'Mais info...', 100000, 'SHOES')
+            ->addItem('abacaxi', 2, 'Abacaxi de terra de areia', 990, 'OTHER_CATEGORIES')
             ->setDiscount(1000)
             ->setShippingAmount(1490)
             ->setOwnId($this->last_ord_id);
diff --git a/tests/jsons/account/create.json b/tests/jsons/account/create.json
index 93135f4..c948183 100644
--- a/tests/jsons/account/create.json
+++ b/tests/jsons/account/create.json
@@ -1 +1 @@
-{"id":"MPA-61B1FE0940A2","login":"fortestsminecustomercompany@mailinator.com","accessToken":"dbb1cee101444f7a9f74c576854b9103_v2","channelId":"APP-QGAGZRIX1CUF","type":"MERCHANT","transparentAccount":false,"email":{"address":"fortestsminecustomercompany@mailinator.com","confirmed":false},"person":{"name":"For tests","lastName":"Mine Customer Company","birthDate":"1990-01-01","taxDocument":{"type":"CPF","number":"028.229.218-73"},"address":{"street":"Av. Brigadeiro Faria Lima","streetNumber":"2927","district":"Itaim","zipcode":"01234000","zipCode":"01234000","city":"São Paulo","state":"SP","country":"BRA","complement":"Ap. X"},"phone":{"countryCode":"55","areaCode":"11","number":"965213244","verified":false,"phoneType":"not_informed"},"nationality":"BRA","identityDocument":{"number":"144563480","issuer":"SSP","issueDate":"2017-10-25","type":"RG"},"alternativePhones":[{"countryCode":"55","areaCode":"11","number":"912345678","verified":false,"phoneType":"not_informed"}],"birthPlace":"São Paulo","parentsName":{"father":"Father of Mine Customer","mother":"Mother of Mine Customer"}},"company":{"name":"Mine Customer Company","businessName":"Company Business","taxDocument":{"type":"CNPJ","number":"64.893.609/0001-10"},"address":{"street":"R. Company","streetNumber":"321","district":"Bairro Company","zipcode":"12345678","zipCode":"12345678","city":"São Paulo","state":"SP","country":"BRA","complement":"Ap. Y"},"phone":{"countryCode":"55","areaCode":"11","number":"987654321","verified":false,"phoneType":"not_informed"},"openingDate":"2017-10-20"},"businessSegment":{"id":33,"name":"Jogos online","mcc":null},"site":"https://www.meusite.com","createdAt":"2017-10-25T14:05:46.050Z","_links":{"self":{"href":"https://sandbox.moip.com.br/moipaccounts/MPA-61B1FE0940A2","title":null}}}
\ No newline at end of file
+{"id":"MPA-61B1FE0940A2","login":"fortestsminecustomercompany@mailinator.com","accessToken":"dbb1cee101444f7a9f74c576854b9103_v2","channelId":"APP-QGAGZRIX1CUF","type":"MERCHANT","transparentAccount":false,"email":{"address":"fortestsminecustomercompany@mailinator.com","confirmed":false},"person":{"name":"For tests","lastName":"Mine Customer Company","birthDate":"1990-01-01","taxDocument":{"type":"CPF","number":"028.229.218-73"},"address":{"street":"Av. Brigadeiro Faria Lima","streetNumber":"2927","district":"Itaim","zipcode":"01234000","zipCode":"01234000","city":"São Paulo","state":"SP","country":"BRA","complement":"Ap. X"},"phone":{"countryCode":"55","areaCode":"11","number":"965213244","verified":false,"phoneType":"not_informed"},"nationality":"BRA","identityDocument":{"number":"144563480","issuer":"SSP","issueDate":"2017-10-25","type":"RG"},"alternativePhones":[{"countryCode":"55","areaCode":"11","number":"912345678","verified":false,"phoneType":"not_informed"}],"birthPlace":"São Paulo","parentsName":{"father":"Father of Mine Customer","mother":"Mother of Mine Customer"}},"company":{"name":"Mine Customer Company","businessName":"Company Business","taxDocument":{"type":"CNPJ","number":"64.893.609/0001-10"},"address":{"street":"R. Company","streetNumber":"321","district":"Bairro Company","zipcode":"12345678","zipCode":"12345678","city":"São Paulo","state":"SP","country":"BRA","complement":"Ap. Y"},"phone":{"countryCode":"55","areaCode":"11","number":"987654321","verified":false,"phoneType":"not_informed"},"openingDate":"2017-10-20"},"businessSegment":{"id":5,"name":"Antiguidades / Negociante de artes / Galerias","mcc":5971},"site":"https://www.meusite.com","createdAt":"2017-10-25T14:05:46.050Z","_links":{"self":{"href":"https://sandbox.moip.com.br/moipaccounts/MPA-61B1FE0940A2","title":null},"setPassword":{"href":"https://desenvolvedor.moip.com.br/sandbox/AskForNewPassword.do?method=confirm&email=dev.moip%40labs.moip.com.br&code=8e3b306d59907f4a47508913956c96ba"}}}
\ No newline at end of file
diff --git a/tests/jsons/balances/get.json b/tests/jsons/balances/get.json
new file mode 100644
index 0000000..f7b017a
--- /dev/null
+++ b/tests/jsons/balances/get.json
@@ -0,0 +1 @@
+{"unavailable": [{"amount": 0, "currency": "BRL"}], "future": [{"amount": 0, "currency": "BRL"}], "current": [{"amount": 44592168, "currency": "BRL"}]}
\ No newline at end of file