diff --git a/app/models/bank_transaction.rb b/app/models/bank_transaction.rb
index 6fbf7ce592..6612a4dbd1 100644
--- a/app/models/bank_transaction.rb
+++ b/app/models/bank_transaction.rb
@@ -16,22 +16,12 @@ def binded_invoice
     account_activity.invoice
   end
 
-
-  def invoice_num
-    return @invoice_no if defined?(@invoice_no)
-
-    match = description.match(/^[^\d]*(\d+)/)
-    return unless match
-
-    @invoice_no = match[1].try(:to_i)
-  end
-
   def invoice
-    @invoice ||= registrar.invoices.find_by(number: invoice_num) if registrar
+    @invoice ||= registrar.invoices.find_by(total: sum) if registrar
   end
 
   def registrar
-    @registrar ||= Invoice.find_by(reference_no: reference_no)&.buyer
+    @registrar ||= Invoice.find_by(reference_no: parsed_ref_number)&.buyer
   end
 
 
@@ -39,11 +29,9 @@ def registrar
   def autobind_invoice
     return if binded?
     return unless registrar
-    return unless invoice_num
     return unless invoice
     return unless invoice.payable?
 
-    return if invoice.total != sum
     create_activity(registrar, invoice)
   end
 
@@ -98,4 +86,12 @@ def reset_pending_registrar_balance_reload
     registrar.settings['balance_auto_reload'].delete('pending')
     registrar.save!
   end
+
+  def parsed_ref_number
+    reference_no || ref_number_from_description
+  end
+
+  def ref_number_from_description
+    /(\d{7})/.match(description)[0]
+  end
 end
diff --git a/test/fixtures/bank_transactions.yml b/test/fixtures/bank_transactions.yml
index ada80981d4..70b3b6651b 100644
--- a/test/fixtures/bank_transactions.yml
+++ b/test/fixtures/bank_transactions.yml
@@ -1,5 +1,5 @@
 one:
   sum: 1
   currency: EUR
-  description: Order nr. 1
-  iban: US75512108001245126199
\ No newline at end of file
+  description: Order nr 1 from registrar 1234567 second number 2345678
+  iban: US75512108001245126199
diff --git a/test/fixtures/invoices.yml b/test/fixtures/invoices.yml
index 3fe18b4b2b..bc9fa29003 100644
--- a/test/fixtures/invoices.yml
+++ b/test/fixtures/invoices.yml
@@ -22,4 +22,5 @@ one:
   vat_rate: 0.1
   total: 16.50
   reference_no: 13
-  number: 1
\ No newline at end of file
+  number: 1
+  description: Order nr 1 from registrar 1234567 second number 2345678
diff --git a/test/integration/registrar_area/invoices/payment_callback_test.rb b/test/integration/registrar_area/invoices/payment_callback_test.rb
index 2303158a7a..23db55e844 100644
--- a/test/integration/registrar_area/invoices/payment_callback_test.rb
+++ b/test/integration/registrar_area/invoices/payment_callback_test.rb
@@ -28,7 +28,7 @@ def payable_invoice
 
   def assert_matching_bank_transaction_exists(invoice)
     assert BankTransaction.find_by(
-      description: invoice.order,
+      description: invoice.description,
       currency: invoice.currency,
       iban: invoice.seller_iban
     ), 'Matching bank transaction should exist'
@@ -56,4 +56,4 @@ def every_pay_request_params
       payment_method:      "every_pay"
     }
   end
-end
\ No newline at end of file
+end
diff --git a/test/models/bank_transaction_test.rb b/test/models/bank_transaction_test.rb
index 0e4d88bd6b..37ff4041a5 100644
--- a/test/models/bank_transaction_test.rb
+++ b/test/models/bank_transaction_test.rb
@@ -6,9 +6,20 @@ class BankTransactionTest < ActiveSupport::TestCase
     @invoice = invoices(:one)
   end
 
-  def test_matches_against_invoice_number_and_reference_number
-    create_payable_invoice(number: '2222', total: 10, reference_no: '1111')
-    transaction = BankTransaction.new(description: 'invoice #2222', sum: 10, reference_no: '1111')
+  def test_matches_against_invoice_nubmber_and_reference_number
+    create_payable_invoice(number: '2222', total: 10, reference_no: '1234567')
+    transaction = BankTransaction.new(description: 'invoice #2222', sum: 10, reference_no: '1234567')
+
+    assert_difference 'AccountActivity.count' do
+      transaction.autobind_invoice
+    end
+  end
+
+  def test_matches_against_invoice_nubmber_and_reference_number_in_description
+    create_payable_invoice(number: '2222', total: 10, reference_no: '1234567')
+    transaction = BankTransaction.new(description: 'invoice #2222',
+                                      sum: 10,
+                                      description: 'Order nr 1 from registrar 1234567 second number 2345678')
 
     assert_difference 'AccountActivity.count' do
       transaction.autobind_invoice