diff --git a/CHANGELOG.md b/CHANGELOG.md
index 116cbbf..1112337 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 * Add missing RIPE API endpoints to be consistent with RIPE SDK - [#31](https://github.com/ripe-tech/ripe-api/pull/31)
+* Add `Invoice Rule` API methods - [peri-invoicing/#3](https://github.com/ripe-tech/peri-invoicing/issues/3)
 
 ### Changed
 
diff --git a/src/ripe/__init__.py b/src/ripe/__init__.py
index 46128df..32fbc22 100644
--- a/src/ripe/__init__.py
+++ b/src/ripe/__init__.py
@@ -10,6 +10,7 @@
 from . import country_group
 from . import design
 from . import factory_rule
+from . import invoice_rule
 from . import justification
 from . import locale
 from . import model
@@ -31,6 +32,7 @@
 from .config import ConfigAPI
 from .design import DesignAPI
 from .factory_rule import FactoryRuleAPI
+from .invoice_rule import InvoiceRuleAPI
 from .justification import JustificationAPI
 from .locale import LocaleAPI
 from .model import ModelAPI
diff --git a/src/ripe/invoice_rule.py b/src/ripe/invoice_rule.py
new file mode 100644
index 0000000..a85a71f
--- /dev/null
+++ b/src/ripe/invoice_rule.py
@@ -0,0 +1,29 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+class InvoiceRuleAPI(object):
+
+    def list_invoice_rules(self, *args, **kwargs):
+        url = self.base_url + "invoice_rules"
+        contents = self.get(url, **kwargs)
+        return contents
+
+    def create_invoice_rule(self, invoice_rule):
+        url = self.base_url + "invoice_rules"
+        contents = self.post(url, data_j = invoice_rule)
+        return contents
+
+    def get_invoice_rule(self, id):
+        url = self.base_url + "invoice_rules/%d" % id
+        contents = self.get(url)
+        return contents
+
+    def update_invoice_rule(self, id, invoice_rule):
+        url = self.base_url + "invoice_rules/%d" % id
+        contents = self.put(url, data_j = invoice_rule)
+        return contents
+
+    def delete_invoice_rule(self, id):
+        url = self.base_url + "invoice_rules/%d" % id
+        contents = self.delete(url)
+        return contents