diff --git a/src/Vapi.Net.Test/Core/Json/CallSubscriptionLimitsTests.cs b/src/Vapi.Net.Test/Core/Json/CallSubscriptionLimitsTests.cs
new file mode 100644
index 0000000..204921c
--- /dev/null
+++ b/src/Vapi.Net.Test/Core/Json/CallSubscriptionLimitsTests.cs
@@ -0,0 +1,129 @@
+using NUnit.Framework;
+using Vapi.Net.Core;
+
+namespace Vapi.Net.Test.Core.Json;
+
+[TestFixture]
+public class CallSubscriptionLimitsTests
+{
+    [Test]
+    public void Call_WithSubscriptionLimits_ShouldDeserializeCorrectly()
+    {
+        // Arrange - simulates the JSON returned by the CreateCall REST API
+        const string json = """
+            {
+                "id": "call-123",
+                "orgId": "org-456",
+                "createdAt": "2025-01-01T00:00:00Z",
+                "updatedAt": "2025-01-01T00:00:00Z",
+                "subscriptionLimits": {
+                    "concurrencyBlocked": false,
+                    "concurrencyLimit": 500,
+                    "remainingConcurrentCalls": 499
+                }
+            }
+            """;
+
+        // Act
+        var call = JsonUtils.Deserialize<Call>(json);
+
+        // Assert
+        Assert.That(call, Is.Not.Null);
+        Assert.That(call.SubscriptionLimits, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(call.SubscriptionLimits!.ConcurrencyBlocked, Is.False);
+            Assert.That(call.SubscriptionLimits!.ConcurrencyLimit, Is.EqualTo(500));
+            Assert.That(call.SubscriptionLimits!.RemainingConcurrentCalls, Is.EqualTo(499));
+        });
+    }
+
+    [Test]
+    public void Call_WithoutSubscriptionLimits_ShouldDeserializeWithNull()
+    {
+        // Arrange - simulates a response that doesn't include subscriptionLimits
+        const string json = """
+            {
+                "id": "call-123",
+                "orgId": "org-456",
+                "createdAt": "2025-01-01T00:00:00Z",
+                "updatedAt": "2025-01-01T00:00:00Z"
+            }
+            """;
+
+        // Act
+        var call = JsonUtils.Deserialize<Call>(json);
+
+        // Assert
+        Assert.That(call, Is.Not.Null);
+        Assert.That(call.SubscriptionLimits, Is.Null);
+    }
+
+    [Test]
+    public void Call_WithSubscriptionLimits_ShouldSerializeCorrectly()
+    {
+        // Arrange
+        var call = new Call
+        {
+            Id = "call-123",
+            OrgId = "org-456",
+            CreatedAt = new DateTime(2025, 1, 1, 0, 0, 0, DateTimeKind.Utc),
+            UpdatedAt = new DateTime(2025, 1, 1, 0, 0, 0, DateTimeKind.Utc),
+            SubscriptionLimits = new SubscriptionLimits
+            {
+                ConcurrencyBlocked = false,
+                ConcurrencyLimit = 500,
+                RemainingConcurrentCalls = 499,
+            },
+        };
+
+        // Act
+        var json = JsonUtils.Serialize(call);
+        var deserialized = JsonUtils.Deserialize<Call>(json);
+
+        // Assert
+        Assert.That(deserialized, Is.Not.Null);
+        Assert.That(deserialized.SubscriptionLimits, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(deserialized.SubscriptionLimits!.ConcurrencyBlocked, Is.False);
+            Assert.That(deserialized.SubscriptionLimits!.ConcurrencyLimit, Is.EqualTo(500));
+            Assert.That(
+                deserialized.SubscriptionLimits!.RemainingConcurrentCalls,
+                Is.EqualTo(499)
+            );
+        });
+    }
+
+    [Test]
+    public void Call_WithConcurrencyBlocked_ShouldDeserializeCorrectly()
+    {
+        // Arrange - simulates a blocked call response
+        const string json = """
+            {
+                "id": "call-789",
+                "orgId": "org-456",
+                "createdAt": "2025-01-01T00:00:00Z",
+                "updatedAt": "2025-01-01T00:00:00Z",
+                "subscriptionLimits": {
+                    "concurrencyBlocked": true,
+                    "concurrencyLimit": 10,
+                    "remainingConcurrentCalls": 0
+                }
+            }
+            """;
+
+        // Act
+        var call = JsonUtils.Deserialize<Call>(json);
+
+        // Assert
+        Assert.That(call, Is.Not.Null);
+        Assert.That(call.SubscriptionLimits, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(call.SubscriptionLimits!.ConcurrencyBlocked, Is.True);
+            Assert.That(call.SubscriptionLimits!.ConcurrencyLimit, Is.EqualTo(10));
+            Assert.That(call.SubscriptionLimits!.RemainingConcurrentCalls, Is.EqualTo(0));
+        });
+    }
+}
diff --git a/src/Vapi.Net/Types/Call.cs b/src/Vapi.Net/Types/Call.cs
index 75334f5..f811b52 100644
--- a/src/Vapi.Net/Types/Call.cs
+++ b/src/Vapi.Net/Types/Call.cs
@@ -290,6 +290,12 @@ public IEnumerable<
     [JsonPropertyName("schedulePlan")]
     public SchedulePlan? SchedulePlan { get; set; }
 
+    /// <summary>
+    /// These are the subscription limits for the org.
+    /// </summary>
+    [JsonPropertyName("subscriptionLimits")]
+    public SubscriptionLimits? SubscriptionLimits { get; set; }
+
     /// <summary>
     /// This is the transport of the call.
     /// </summary>