diff --git a/InvenTree/part/migrations/0066_bomitem_allow_variants.py b/InvenTree/part/migrations/0066_bomitem_allow_variants.py
new file mode 100644
index 0000000000..e545c8e3cb
--- /dev/null
+++ b/InvenTree/part/migrations/0066_bomitem_allow_variants.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2 on 2021-06-01 03:58
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0065_auto_20210505_2144'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='bomitem',
+            name='allow_variants',
+            field=models.BooleanField(default=False, help_text='Stock items for variant parts can be used for this BOM item', verbose_name='Allow Variants'),
+        ),
+    ]
diff --git a/InvenTree/part/models.py b/InvenTree/part/models.py
index 7db998ab3d..7b9038fecb 100644
--- a/InvenTree/part/models.py
+++ b/InvenTree/part/models.py
@@ -2240,6 +2240,7 @@ class BomItem(models.Model):
         note: Note field for this BOM item
         checksum: Validation checksum for the particular BOM line item
         inherited: This BomItem can be inherited by the BOMs of variant parts
+        allow_variants: Stock for part variants can be substituted for this BomItem
     """
 
     def save(self, *args, **kwargs):
@@ -2288,6 +2289,12 @@ class BomItem(models.Model):
         help_text=_('This BOM item is inherited by BOMs for variant parts'),
     )
 
+    allow_variants = models.BooleanField(
+        default=False,
+        verbose_name=_('Allow Variants'),
+        help_text=_('Stock items for variant parts can be used for this BOM item')
+    )
+
     def get_item_hash(self):
         """ Calculate the checksum hash of this BOM line item:
 
diff --git a/InvenTree/part/serializers.py b/InvenTree/part/serializers.py
index 04e0b7a119..d03a37c6dc 100644
--- a/InvenTree/part/serializers.py
+++ b/InvenTree/part/serializers.py
@@ -453,6 +453,7 @@ class BomItemSerializer(InvenTreeModelSerializer):
     class Meta:
         model = BomItem
         fields = [
+            'allow_variants',
             'inherited',
             'note',
             'optional',
@@ -460,16 +461,16 @@ class BomItemSerializer(InvenTreeModelSerializer):
             'pk',
             'part',
             'part_detail',
+            'purchase_price_avg',
+            'purchase_price_max',
+            'purchase_price_min',
+            'purchase_price_range',
             'quantity',
             'reference',
             'sub_part',
             'sub_part_detail',
             # 'price_range',
             'validated',
-            'purchase_price_min',
-            'purchase_price_max',
-            'purchase_price_avg',
-            'purchase_price_range',
         ]