diff --git a/app/views/admin/registrars/form/_billing.html.erb b/app/views/admin/registrars/form/_billing.html.erb
index 8d1375f64..91086918b 100644
--- a/app/views/admin/registrars/form/_billing.html.erb
+++ b/app/views/admin/registrars/form/_billing.html.erb
@@ -74,6 +74,7 @@
                     </div>
                     <div class="col-md-7">
                         <%= f.text_field :iban, maxlength: iban_max_length, class: 'form-control' %>
+                        <span class="help-block"><%= t '.iban_hint' %></span>
                     </div>
                 </div>
             </div>
diff --git a/config/locales/admin/registrars.en.yml b/config/locales/admin/registrars.en.yml
index 7256fabb2..88e95843e 100644
--- a/config/locales/admin/registrars.en.yml
+++ b/config/locales/admin/registrars.en.yml
@@ -63,6 +63,7 @@ en:
             registry's rate of %{registry_vat_rate} will be applied in this case.
           no_reference_number_hint: Reference number will be generated automatically
           disabled_reference_number_hint: Reference number cannot be changed
+          iban_hint: Used for e-invoices
 
         preferences:
           header: Preferences
\ No newline at end of file