diff --git a/app/models.py b/app/models.py
index 419200b6..e081a707 100644
--- a/app/models.py
+++ b/app/models.py
@@ -30,6 +30,8 @@ from app.config import (
     DISABLE_ONBOARDING,
     UNSUBSCRIBER,
     ALIAS_RANDOM_SUFFIX_LENGTH,
+    MAX_NB_SUBDOMAIN,
+    MAX_NB_DIRECTORY,
 )
 from app.db import Session
 from app.errors import AliasInTrashError, DirectoryInTrashError, SubdomainInTrashError
@@ -397,6 +399,29 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         server_default="0",
     )
 
+    _directory_quota = sa.Column(
+        "directory_quota", sa.Integer, default=50, nullable=False, server_default="50"
+    )
+
+    _subdomain_quota = sa.Column(
+        "subdomain_quota", sa.Integer, default=5, nullable=False, server_default="5"
+    )
+
+    @property
+    def directory_quota(self):
+        return min(
+            self._directory_quota,
+            MAX_NB_DIRECTORY - Directory.filter_by(user_id=self.id).count(),
+        )
+
+    @property
+    def subdomain_quota(self):
+        return min(
+            self._subdomain_quota,
+            MAX_NB_SUBDOMAIN
+            - CustomDomain.filter_by(user_id=self.id, is_sl_subdomain=True).count(),
+        )
+
     @staticmethod
     def subdomain_is_available():
         return SLDomain.filter_by(can_use_subdomain=True).count() > 0
diff --git a/migrations/versions/2021_111810_b8fd175c084a_.py b/migrations/versions/2021_111810_b8fd175c084a_.py
new file mode 100644
index 00000000..a904487a
--- /dev/null
+++ b/migrations/versions/2021_111810_b8fd175c084a_.py
@@ -0,0 +1,31 @@
+"""empty message
+
+Revision ID: b8fd175c084a
+Revises: 9031c9e28510
+Create Date: 2021-11-18 10:29:13.512071
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'b8fd175c084a'
+down_revision = '9031c9e28510'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('directory_quota', sa.Integer(), server_default='50', nullable=False))
+    op.add_column('users', sa.Column('subdomain_quota', sa.Integer(), server_default='5', nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('users', 'subdomain_quota')
+    op.drop_column('users', 'directory_quota')
+    # ### end Alembic commands ###