diff --git a/README.rst b/README.rst
index 536b3d3..306dc73 100644
--- a/README.rst
+++ b/README.rst
@@ -84,6 +84,23 @@ Transaction objects::
 
     transaction.refund()
 
+
+E-Checks
+^^^^^^^^
+Only authorize.net is supported for now.
+
+::
+    transaction = dinero.Transaction.create(100,
+      check={
+        'account_type': 'checking', # 'checking', 'savings', 'businessChecking'
+        'routing_number': '122242607', # must be a valid routing number, even during testing.
+        'account_number': '411111111',
+        'name': 'John Doe',
+        'check_type': 'WEB', #optional, WEB is the default
+        'bank_name': 'Bank of Dinero',
+        })
+
+
 Customer Objects
 ~~~~~~~~~~~~~~~~
 
diff --git a/dinero/exceptions.py b/dinero/exceptions.py
index 85176d0..5cf1060 100644
--- a/dinero/exceptions.py
+++ b/dinero/exceptions.py
@@ -69,6 +69,9 @@ class RefundError(PaymentError):
 class InvalidTransactionError(PaymentError):
     pass
 
+class RoutingNumberError(PaymentError):
+    pass
+
 
 ##|
 ##|  CUSTOMER
diff --git a/dinero/gateways/authorizenet_gateway.py b/dinero/gateways/authorizenet_gateway.py
index 766b0f0..8cb6eb2 100644
--- a/dinero/gateways/authorizenet_gateway.py
+++ b/dinero/gateways/authorizenet_gateway.py
@@ -147,6 +147,7 @@ def get_first_of(dict, possibilities, default=None):
 
 
 RESPONSE_CODE_EXCEPTION_MAP = {
+        '9':  [RoutingNumberError],
         '8':  [ExpiryError],
         '6':  [InvalidCardError],
         '37': [InvalidCardError],
@@ -262,7 +263,24 @@ def _transaction_xml(self, price, options):
             ]))
         return xml
 
+    def _payment_check_xml(self, options):
+        return OrderedDict([
+            ('bankAccount', OrderedDict([
+                ('accountType', options['account_type']),
+                ('routingNumber', options['routing_number']),
+                ('accountNumber', options['account_number']),
+                ('nameOnAccount', options['name']),
+                # don't know what this default should be
+                ('echeckType', options.get('check_type', 'WEB')),
+                ('bankName', options.get('bank_name')),
+                ])
+                ),
+            ])
+
     def _payment_xml(self, options):
+        if 'check' in options:
+            return self._payment_check_xml(options['check'])
+
         year = str(options.get('year', '0'))
         if year != 'XXXX' and int(year) < 100:
             century = date.today().year // 100