diff --git a/shop/tests/api/test_product_filters.py b/shop/tests/api/test_product_filters.py
new file mode 100644
index 0000000..4389940
--- /dev/null
+++ b/shop/tests/api/test_product_filters.py
@@ -0,0 +1,30 @@
+from decimal import Decimal
+
+from django.test import TestCase
+
+from shop.tests.mixins import CreateProductsMixin
+from shop.models import Product
+from shop.filters import ProductFilter
+
+
+class TestProductFilter(TestCase, CreateProductsMixin):
+    def setUp(self):
+        product_a = self.create_product(name="producto 1", sku='001', price=Decimal("40.00"))
+        product_b = self.create_product(name="producto 2", sku='002', price=Decimal("70.00"))
+        product_c = self.create_product(name="producto 3", sku='003', price=Decimal("100.00"))
+
+    def test_product_filter_by_price(self):
+        f = ProductFilter({"price_gt": "40"})
+        f.is_valid()
+        qs = f.filter_queryset(Product.objects.all())
+        assert qs.count() == 3
+
+        f = ProductFilter({"price_lt": "40"})
+        f.is_valid()
+        qs = f.filter_queryset(Product.objects.all())
+        assert qs.count() == 0
+
+        f = ProductFilter({"price_gt": "100"})
+        f.is_valid()
+        qs = f.filter_queryset(Product.objects.all())
+        assert qs.count() == 1
diff --git a/shop/tests/mixins.py b/shop/tests/mixins.py
index 1dcd50e..af7bac0 100644
--- a/shop/tests/mixins.py
+++ b/shop/tests/mixins.py
@@ -13,7 +13,7 @@ class CreateProductsMixin:
         description="Descripción",
         price=Decimal("10.00"),
     ) -> Product:
-        tax = Tax.objects.create(
+        tax, created = Tax.objects.get_or_create(
             code="IVA",
             value=21,
         )
@@ -27,5 +27,6 @@ class CreateProductsMixin:
             product=product,
             date=now(),
             tax=tax,
+            current=True,
         )
         return product