diff --git a/README.md b/README.md
index 30d1a47..bcad207 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,10 @@ metrics:
 The cluster state collector exposes `pve_cluster_mode`, where `1` means that
 Proxmox VE is configured as a cluster and `0` means that it is a standalone node.
 
+The `pve_node_subscription_status` metric uses `0` when no subscription is
+configured, `1` for an active subscription, and `2` for an expired or otherwise
+unusable subscription.
+
 ## Build
 
 To build the Docker image for PVE Exporter, use the following command:
diff --git a/metrics/pve_node_subscription_collector.go b/metrics/pve_node_subscription_collector.go
index 025a2e1..e6f9dfe 100644
--- a/metrics/pve_node_subscription_collector.go
+++ b/metrics/pve_node_subscription_collector.go
@@ -39,7 +39,7 @@ func NewPveSubscriptionCollector(apiClient *proxmox.PveApiClient, registry *TTLR
 	c.status = NewTTLGaugeVec(
 		prometheus.GaugeOpts{
 			Name: "pve_node_subscription_status",
-			Help: "Node subscription status.",
+			Help: "Node subscription status (0 = not found, 1 = active, 2 = expired or otherwise unusable).",
 		},
 		[]string{"cluster", "node"},
 		5*time.Minute,
@@ -111,7 +111,7 @@ func (c *PveSubscriptionCollector) CollectMetrics() error {
 			c.info.With(subsLabels).Set(1)
 
 			// Subscription state.
-			c.status.With(labels).Set(subscription.GetActiveNumeric())
+			c.status.With(labels).Set(subscription.GetStatusNumeric())
 
 			// Subscription sockets count.
 			c.sockets.With(labels).Set(float64(subscription.Sockets))
diff --git a/proxmox/model.go b/proxmox/model.go
index d0a3ac5..b8b1ec8 100644
--- a/proxmox/model.go
+++ b/proxmox/model.go
@@ -430,13 +430,18 @@ func (r *PveSdnResource) GetStatusNumeric() float64 {
 	return 0
 }
 
-// GetActiveNumeric returns the numeric state of a subscription.
-// Returns 1 if the subscription status is "active", otherwise returns 0.
-func (r *PveSubscription) GetActiveNumeric() float64 {
-	if r.Status == "active" {
+// GetStatusNumeric returns the numeric state of a subscription.
+// A missing subscription is 0, an active subscription is 1, and an expired
+// or otherwise unusable subscription is 2.
+func (r *PveSubscription) GetStatusNumeric() float64 {
+	switch r.Status {
+	case "notfound":
+		return 0
+	case "active":
 		return 1
+	default:
+		return 2
 	}
-	return 0
 }
 
 // GetSmartPassedState returns the numeric health state of a disk.
diff --git a/proxmox/model_test.go b/proxmox/model_test.go
index d268df0..2adad6e 100644
--- a/proxmox/model_test.go
+++ b/proxmox/model_test.go
@@ -28,3 +28,27 @@ func TestPveClusterStatusGetClusterModeNumeric(t *testing.T) {
 		})
 	}
 }
+
+func TestPveSubscriptionGetStatusNumeric(t *testing.T) {
+	tests := []struct {
+		status string
+		want   float64
+	}{
+		{status: "notfound", want: 0},
+		{status: "active", want: 1},
+		{status: "expired", want: 2},
+		{status: "invalid", want: 2},
+		{status: "suspended", want: 2},
+		{status: "new", want: 2},
+		{status: "unknown", want: 2},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.status, func(t *testing.T) {
+			subscription := PveSubscription{Status: tt.status}
+			if got := subscription.GetStatusNumeric(); got != tt.want {
+				t.Fatalf("GetStatusNumeric() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}