diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb35db20a48..02b78ee8802 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,8 +5,9 @@
 * [FEATURE] metrics-generator: support per-tenant processor configuration [#1434](https://github.com/grafana/tempo/pull/1434) (@kvrhdn)
 * [FEATURE] Include rollout dashboard [#1456](https://github.com/grafana/tempo/pull/1456) (@zalegrala)
 * [ENHANCEMENT] Added the ability to have a per tenant max search duration. [#1421](https://github.com/grafana/tempo/pull/1421) (@joe-elliott)
+* [ENHANCEMENT] Azure Backend: Add support for authentication with Managed Identities. [#1457](https://github.com/grafana/tempo/pull/1457) (@joe-elliott)
+* [ENHANCEMENT] metrics-generator: expose max_active_series as a metric [#1471](https://github.com/grafana/tempo/pull/1471) (@kvrhdn)
 * [BUGFIX] Fix nil pointer panic when the trace by id path errors. [#1441](https://github.com/grafana/tempo/pull/1441) (@joe-elliott)
-* [ENHANCEMENT] Azure Backend: Add support for authentication with Managed Identities.
 
 ## v1.4.1 / 2022-05-05
 
diff --git a/integration/e2e/config-metrics-generator.yaml b/integration/e2e/config-metrics-generator.yaml
index 9791f7498e2..d695f6fc60a 100644
--- a/integration/e2e/config-metrics-generator.yaml
+++ b/integration/e2e/config-metrics-generator.yaml
@@ -43,4 +43,5 @@ memberlist:
     - tempo_e2e-metrics-generator:7946
 
 overrides:
-  metrics_generator_processors: [service-graphs, span-metrics]
\ No newline at end of file
+  metrics_generator_processors: [service-graphs, span-metrics]
+  metrics_generator_max_active_series: 1000
\ No newline at end of file
diff --git a/integration/e2e/metrics_generator_test.go b/integration/e2e/metrics_generator_test.go
index a4c723e7ce0..2b82ddeab9e 100644
--- a/integration/e2e/metrics_generator_test.go
+++ b/integration/e2e/metrics_generator_test.go
@@ -156,6 +156,7 @@ func TestMetricsGenerator(t *testing.T) {
 	assert.NoError(t, tempoMetricsGenerator.WaitSumMetrics(e2e.Equals(2), "tempo_metrics_generator_spans_received_total"))
 
 	assert.NoError(t, tempoMetricsGenerator.WaitSumMetrics(e2e.Equals(23), "tempo_metrics_generator_registry_active_series"))
+	assert.NoError(t, tempoMetricsGenerator.WaitSumMetrics(e2e.Equals(1000), "tempo_metrics_generator_registry_max_active_series"))
 	assert.NoError(t, tempoMetricsGenerator.WaitSumMetrics(e2e.Equals(23), "tempo_metrics_generator_registry_series_added_total"))
 }
 
diff --git a/modules/generator/registry/registry.go b/modules/generator/registry/registry.go
index 390881653b6..a8cad99a017 100644
--- a/modules/generator/registry/registry.go
+++ b/modules/generator/registry/registry.go
@@ -20,6 +20,11 @@ var (
 		Name:      "metrics_generator_registry_active_series",
 		Help:      "The active series per tenant",
 	}, []string{"tenant"})
+	metricMaxActiveSeries = promauto.NewGaugeVec(prometheus.GaugeOpts{
+		Namespace: "tempo",
+		Name:      "metrics_generator_registry_max_active_series",
+		Help:      "The maximum active series per tenant",
+	}, []string{"tenant"})
 	metricTotalSeriesAdded = promauto.NewCounterVec(prometheus.CounterOpts{
 		Namespace: "tempo",
 		Name:      "metrics_generator_registry_series_added_total",
@@ -63,6 +68,7 @@ type ManagedRegistry struct {
 
 	logger                   log.Logger
 	metricActiveSeries       prometheus.Gauge
+	metricMaxActiveSeries    prometheus.Gauge
 	metricTotalSeriesAdded   prometheus.Counter
 	metricTotalSeriesRemoved prometheus.Counter
 	metricTotalSeriesLimited prometheus.Counter
@@ -105,6 +111,7 @@ func New(cfg *Config, overrides Overrides, tenant string, appendable storage.App
 
 		logger:                   logger,
 		metricActiveSeries:       metricActiveSeries.WithLabelValues(tenant),
+		metricMaxActiveSeries:    metricMaxActiveSeries.WithLabelValues(tenant),
 		metricTotalSeriesAdded:   metricTotalSeriesAdded.WithLabelValues(tenant),
 		metricTotalSeriesRemoved: metricTotalSeriesRemoved.WithLabelValues(tenant),
 		metricTotalSeriesLimited: metricTotalSeriesLimited.WithLabelValues(tenant),
@@ -196,6 +203,9 @@ func (r *ManagedRegistry) collectMetrics(ctx context.Context) {
 	r.activeSeries.Store(activeSeries)
 	r.metricActiveSeries.Set(float64(activeSeries))
 
+	maxActiveSeries := r.overrides.MetricsGeneratorMaxActiveSeries(r.tenant)
+	r.metricMaxActiveSeries.Set(float64(maxActiveSeries))
+
 	err = appender.Commit()
 	if err != nil {
 		return