diff --git a/aws/common/outputs.tf b/aws/common/outputs.tf
index 8a92cc6f0..5dd4a245d 100644
--- a/aws/common/outputs.tf
+++ b/aws/common/outputs.tf
@@ -208,3 +208,7 @@ output "subnet_ids" {
 output "subnet_cidr_blocks" {
   value = aws_subnet.notification-canada-ca-private[*].cidr_block
 }
+
+output "sns_monthly_spend_limit" {
+  value = var.sns_monthly_spend_limit
+}
diff --git a/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_alarms.tf b/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_alarms.tf
index cf825feb6..bc5387995 100644
--- a/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_alarms.tf
+++ b/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_alarms.tf
@@ -72,3 +72,211 @@ resource "aws_cloudwatch_metric_alarm" "lambda-image-pinpoint-delivery-receipts-
     FunctionName = module.pinpoint_to_sqs_sms_callbacks.function_name
   }
 }
+
+resource "aws_cloudwatch_metric_alarm" "total-sms-spending-warning" {
+  count               = var.cloudwatch_enabled ? 1 : 0
+  alarm_name          = "total-sms-spending-warning"
+  alarm_description   = "SMS spending reached 80% of limit this month"
+  comparison_operator = "GreaterThanOrEqualToThreshold"
+  evaluation_periods  = "1"
+  threshold           = 0.8 * var.sms_monthly_spend_limit
+  treat_missing_data  = "notBreaching"
+  alarm_actions       = [var.sns_alert_warning_arn]
+
+  metric_query {
+    id          = "total_spend"
+    expression  = "sns_spend + pinpoint_spend"
+    label       = "Total SMS Monthly Spend"
+    return_data = "true"
+  }
+
+  metric_query {
+    id = "sns_spend"
+    metric {
+      metric_name = "SMSMonthToDateSpentUSD"
+      namespace   = "AWS/SNS"
+      period      = 300
+      stat        = "Maximum"
+      unit        = "Count"
+    }
+  }
+
+  metric_query {
+    id = "pinpoint_spend"
+    metric {
+      metric_name = "TextMessageMonthlySpend"
+      namespace   = "AWS/SMSVoice"
+      period      = 300
+      stat        = "Maximum"
+      unit        = "Count"
+    }
+  }
+}
+
+resource "aws_cloudwatch_metric_alarm" "total-sms-spending-critical" {
+  count               = var.cloudwatch_enabled ? 1 : 0
+  alarm_name          = "total-sms-spending-critical"
+  alarm_description   = "SMS spending reached 90% of limit this month"
+  comparison_operator = "GreaterThanOrEqualToThreshold"
+  evaluation_periods  = "1"
+  threshold           = 0.9 * var.sms_monthly_spend_limit
+  treat_missing_data  = "notBreaching"
+  alarm_actions       = [var.sns_alert_warning_arn]
+
+  metric_query {
+    id          = "total_spend"
+    expression  = "sns_spend + pinpoint_spend"
+    label       = "Total SMS Monthly Spend"
+    return_data = "true"
+  }
+
+  metric_query {
+    id = "sns_spend"
+    metric {
+      metric_name = "SMSMonthToDateSpentUSD"
+      namespace   = "AWS/SNS"
+      period      = 300
+      stat        = "Maximum"
+      unit        = "Count"
+    }
+  }
+
+  metric_query {
+    id = "pinpoint_spend"
+    metric {
+      metric_name = "TextMessageMonthlySpend"
+      namespace   = "AWS/SMSVoice"
+      period      = 300
+      stat        = "Maximum"
+      unit        = "Count"
+    }
+  }
+}
+
+resource "aws_cloudwatch_metric_alarm" "pinpoint-sms-success-rate-warning" {
+  count               = var.cloudwatch_enabled ? 1 : 0
+  alarm_name          = "pinpoint-sms-success-rate-warning"
+  alarm_description   = "Pinpoint SMS success rate is below 60% over 2 consecutive periods of 12 hours"
+  comparison_operator = "LessThanThreshold"
+  evaluation_periods  = "2"
+  datapoints_to_alarm = "2"
+  threshold           = 60 / 100
+  alarm_actions       = [var.sns_alert_warning_arn]
+  treat_missing_data  = "notBreaching"
+
+  metric_query {
+    id          = "success_rate"
+    expression  = "successes / (successes + failures)"
+    label       = "Success Rate"
+    return_data = "true"
+  }
+
+  metric_query {
+    id = "successes"
+    metric {
+      metric_name = aws_cloudwatch_log_metric_filter.pinpoint-sms-successes[0].metric_transformation[0].name
+      namespace   = aws_cloudwatch_log_metric_filter.pinpoint-sms-successes[0].metric_transformation[0].namespace
+      period      = 60 * 60 * 12
+      stat        = "Sum"
+      unit        = "Count"
+    }
+  }
+
+  metric_query {
+    id = "failures"
+    metric {
+      metric_name = aws_cloudwatch_log_metric_filter.pinpoint-sms-failures[0].metric_transformation[0].name
+      namespace   = aws_cloudwatch_log_metric_filter.pinpoint-sms-failures[0].metric_transformation[0].namespace
+      period      = 60 * 60 * 12
+      stat        = "Sum"
+      unit        = "Count"
+    }
+  }
+}
+
+resource "aws_cloudwatch_metric_alarm" "pinpoint-sms-success-rate-canadian-numbers-critical" {
+  count               = var.cloudwatch_enabled ? 1 : 0
+  alarm_name          = "pinpoint-sms-success-rate-canadian-numbers-critical"
+  alarm_description   = "Pinpoint SMS success rate to Canadian numbers is below 25% over 2 consecutive periods of 12 hours"
+  comparison_operator = "LessThanThreshold"
+  evaluation_periods  = "2"
+  datapoints_to_alarm = "2"
+  threshold           = 25 / 100
+  alarm_actions       = [var.sns_alert_critical_arn]
+  ok_actions          = [var.sns_alert_ok_arn]
+  treat_missing_data  = "notBreaching"
+
+  metric_query {
+    id          = "success_rate"
+    expression  = "successes / (successes + failures)"
+    label       = "Success Rate"
+    return_data = "true"
+  }
+
+  metric_query {
+    id = "successes"
+    metric {
+      metric_name = aws_cloudwatch_log_metric_filter.pinpoint-sms-successes[0].metric_transformation[0].name
+      namespace   = aws_cloudwatch_log_metric_filter.pinpoint-sms-successes[0].metric_transformation[0].namespace
+      period      = 60 * 60 * 12
+      stat        = "Sum"
+      unit        = "Count"
+    }
+  }
+
+  metric_query {
+    id = "failures"
+    metric {
+      metric_name = aws_cloudwatch_log_metric_filter.pinpoint-sms-failures[0].metric_transformation[0].name
+      namespace   = aws_cloudwatch_log_metric_filter.pinpoint-sms-failures[0].metric_transformation[0].namespace
+      period      = 60 * 60 * 12
+      stat        = "Sum"
+      unit        = "Count"
+    }
+  }
+}
+
+resource "aws_cloudwatch_metric_alarm" "pinpoint-sms-blocked-as-spam-warning" {
+  count               = var.cloudwatch_enabled ? 1 : 0
+  alarm_name          = "pinpoint-sms-blocked-as-spam-warning"
+  alarm_description   = "More than 10 Pinpoint SMS have been blocked as spam over 12 hours"
+  comparison_operator = "GreaterThanOrEqualToThreshold"
+  evaluation_periods  = "1"
+  metric_name         = aws_cloudwatch_log_metric_filter.pinpoint-sms-blocked-as-spam[0].metric_transformation[0].name
+  namespace           = aws_cloudwatch_log_metric_filter.pinpoint-sms-blocked-as-spam[0].metric_transformation[0].namespace
+  period              = 60 * 60 * 12
+  statistic           = "Sum"
+  threshold           = 10
+  alarm_actions       = [var.sns_alert_warning_arn]
+  treat_missing_data  = "notBreaching"
+}
+
+resource "aws_cloudwatch_metric_alarm" "pinpoint-sms-phone-carrier-unavailable-warning" {
+  count               = var.cloudwatch_enabled ? 1 : 0
+  alarm_name          = "pinpoint-sms-phone-carrier-unavailable-warning"
+  alarm_description   = "More than 100 Pinpoint SMS failed because a phone carrier is unavailable over 3 hours"
+  comparison_operator = "GreaterThanOrEqualToThreshold"
+  evaluation_periods  = "1"
+  metric_name         = aws_cloudwatch_log_metric_filter.pinpoint-sms-phone-carrier-unavailable[0].metric_transformation[0].name
+  namespace           = aws_cloudwatch_log_metric_filter.pinpoint-sms-phone-carrier-unavailable[0].metric_transformation[0].namespace
+  period              = 60 * 60 * 3
+  statistic           = "Sum"
+  threshold           = 100
+  alarm_actions       = [var.sns_alert_warning_arn]
+  treat_missing_data  = "notBreaching"
+}
+
+resource "aws_cloudwatch_metric_alarm" "pinpoint-sms-rate-exceeded-warning" {
+  count               = var.cloudwatch_enabled ? 1 : 0
+  alarm_name          = "pinpoint-sms-rate-exceeded-warning"
+  alarm_description   = "At least 1 Pinpoint SMS rate exceeded error in 5 minutes"
+  comparison_operator = "GreaterThanOrEqualToThreshold"
+  evaluation_periods  = "1"
+  metric_name         = aws_cloudwatch_log_metric_filter.pinpoint-sms-rate-exceeded[0].metric_transformation[0].name
+  namespace           = aws_cloudwatch_log_metric_filter.pinpoint-sms-rate-exceeded[0].metric_transformation[0].namespace
+  period              = 60 * 5
+  statistic           = "Sum"
+  threshold           = 1
+  alarm_actions       = [var.sns_alert_warning_arn]
+  treat_missing_data  = "notBreaching"
+}
diff --git a/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_logs.tf b/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_logs.tf
index 58317ce05..4603bb439 100644
--- a/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_logs.tf
+++ b/aws/pinpoint_to_sqs_sms_callbacks/cloudwatch_logs.tf
@@ -45,3 +45,80 @@ resource "aws_cloudwatch_log_metric_filter" "pinpoint_to_sqs_sms_callbacks-500-e
     value     = "1"
   }
 }
+
+###
+# AWS CloudWatch Logs Metrics
+###
+resource "aws_cloudwatch_log_metric_filter" "pinpoint-sms-blocked-as-spam" {
+  count = var.cloudwatch_enabled ? 1 : 0
+  name  = "pinpoint-sms-blocked-as-spam"
+  # See https://docs.aws.amazon.com/sms-voice/latest/userguide/configuration-sets-event-format.html
+  pattern        = "{ $.messageStatus = \"SPAM\" }"
+  log_group_name = aws_cloudwatch_log_group.pinpoint_deliveries_failures.name
+
+  metric_transformation {
+    name          = "pinpoint-sms-blocked-as-spam"
+    namespace     = "LogMetrics"
+    value         = "1"
+    default_value = "0"
+  }
+}
+
+resource "aws_cloudwatch_log_metric_filter" "pinpoint-sms-phone-carrier-unavailable" {
+  count = var.cloudwatch_enabled ? 1 : 0
+  name  = "pinpoint-sms-phone-carrier-unavailable"
+  # See https://docs.aws.amazon.com/sms-voice/latest/userguide/configuration-sets-event-format.html
+  pattern        = "{ $.messageStatus = \"CARRIER_UNREACHABLE\" }"
+  log_group_name = aws_cloudwatch_log_group.pinpoint_deliveries_failures.name
+
+  metric_transformation {
+    name          = "pinpoint-sms-phone-carrier-unavailable"
+    namespace     = "LogMetrics"
+    value         = "1"
+    default_value = "0"
+  }
+}
+
+resource "aws_cloudwatch_log_metric_filter" "pinpoint-sms-rate-exceeded" {
+  count = var.cloudwatch_enabled ? 1 : 0
+  name  = "pinpoint-sms-rate-exceeded"
+  # https://docs.aws.amazon.com/sns/latest/dg/channels-sms-originating-identities-long-codes.html
+  # Canadian long code numbers are limited at 1 SMS per second/number
+  pattern        = "{ $.messageStatusDescription = \"Rate exceeded.\" }"
+  log_group_name = aws_cloudwatch_log_group.pinpoint_deliveries_failures.name
+
+  metric_transformation {
+    name          = "pinpoint-sms-rate-exceeded"
+    namespace     = "LogMetrics"
+    value         = "1"
+    default_value = "0"
+  }
+}
+
+resource "aws_cloudwatch_log_metric_filter" "pinpoint-sms-successes" {
+  count          = var.cloudwatch_enabled ? 1 : 0
+  name           = "pinpoint-sms-successes"
+  pattern        = "{ ($.isFinal IS TRUE) && ( ($.messageStatus = \"SUCCESSFUL\") || ($.messageStatus = \"DELIVERED\") ) }"
+  log_group_name = aws_cloudwatch_log_group.pinpoint_deliveries.name
+
+  metric_transformation {
+    name          = "pinpoint-sms-successes"
+    namespace     = "LogMetrics"
+    value         = "1"
+    default_value = "0"
+  }
+}
+
+resource "aws_cloudwatch_log_metric_filter" "pinpoint-sms-failures" {
+  count          = var.cloudwatch_enabled ? 1 : 0
+  name           = "pinpoint-sms-failures"
+  pattern        = "{ ($.isFinal IS TRUE) && ( ($.messageStatus != \"SUCCESSFUL\") && ($.messageStatus != \"DELIVERED\") ) }"
+  log_group_name = aws_cloudwatch_log_group.pinpoint_deliveries_failures.name
+
+  metric_transformation {
+    name          = "pinpoint-sms-failures"
+    namespace     = "LogMetrics"
+    value         = "1"
+    default_value = "0"
+  }
+}
diff --git a/aws/pinpoint_to_sqs_sms_callbacks/variables.tf b/aws/pinpoint_to_sqs_sms_callbacks/variables.tf
index f4f47c01b..3bcd541d7 100644
--- a/aws/pinpoint_to_sqs_sms_callbacks/variables.tf
+++ b/aws/pinpoint_to_sqs_sms_callbacks/variables.tf
@@ -35,6 +35,11 @@ variable "pinpoint_to_sqs_sms_callbacks_ecr_arn" {
   description = "The ARN of the ECR repository for the pinpoint_to_sqs_sms_callbacks image"
 }
 
+variable "sms_monthly_spend_limit" {
+  type        = number
+  description = "The total monthly spending limit for SMS (SNS plus Pinpoint)"
+}
+
 variable "force_delete_ecr" {
   description = "Boolean value to decide whether or not to force delete a non-empty ECR"
   type        = bool
diff --git a/env/dev/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl b/env/dev/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
index 56d51c52f..51cd1a8cc 100644
--- a/env/dev/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
+++ b/env/dev/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
@@ -14,6 +14,7 @@ dependency "common" {
     sns_alert_critical_arn                       = ""
     sns_alert_ok_arn                             = ""
     sqs_deliver_receipts_queue_arn               = ""
+    sns_monthly_spend_limit                      = 1
   }
 }
 
@@ -39,6 +40,7 @@ inputs = {
   sqs_deliver_receipts_queue_arn                     = dependency.common.outputs.sqs_deliver_receipts_queue_arn
   pinpoint_to_sqs_sms_callbacks_ecr_repository_url   = dependency.ecr.outputs.pinpoint_to_sqs_sms_callbacks_ecr_repository_url
   pinpoint_to_sqs_sms_callbacks_ecr_arn              = dependency.ecr.outputs.pinpoint_to_sqs_sms_callbacks_ecr_arn
+  sms_monthly_spend_limit                            = dependency.common.outputs.sns_monthly_spend_limit
 }
 
 terraform {
diff --git a/env/production/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl b/env/production/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
index d3aff88dc..dfa753801 100644
--- a/env/production/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
+++ b/env/production/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
@@ -19,7 +19,7 @@ dependency "common" {
     sns_alert_critical_arn                       = ""
     sns_alert_ok_arn                             = ""
     sqs_deliver_receipts_queue_arn               = ""
-
+    sns_monthly_spend_limit                      = 1
   }
 }
 
@@ -45,4 +45,5 @@ inputs = {
   sqs_deliver_receipts_queue_arn                     = dependency.common.outputs.sqs_deliver_receipts_queue_arn
   pinpoint_to_sqs_sms_callbacks_ecr_repository_url   = dependency.ecr.outputs.pinpoint_to_sqs_sms_callbacks_ecr_repository_url
   pinpoint_to_sqs_sms_callbacks_ecr_arn              = dependency.ecr.outputs.pinpoint_to_sqs_sms_callbacks_ecr_arn
+  sms_monthly_spend_limit                            = dependency.common.outputs.sns_monthly_spend_limit
 }
diff --git a/env/staging/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl b/env/staging/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
index 2851955f7..c0fddf361 100644
--- a/env/staging/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
+++ b/env/staging/pinpoint_to_sqs_sms_callbacks/terragrunt.hcl
@@ -14,7 +14,7 @@ dependency "common" {
     sns_alert_critical_arn                       = ""
     sns_alert_ok_arn                             = ""
     sqs_deliver_receipts_queue_arn               = ""
-
+    sns_monthly_spend_limit                      = 1
   }
 }
 
@@ -40,6 +40,7 @@ inputs = {
   sqs_deliver_receipts_queue_arn                     = dependency.common.outputs.sqs_deliver_receipts_queue_arn
   pinpoint_to_sqs_sms_callbacks_ecr_repository_url   = dependency.ecr.outputs.pinpoint_to_sqs_sms_callbacks_ecr_repository_url
   pinpoint_to_sqs_sms_callbacks_ecr_arn              = dependency.ecr.outputs.pinpoint_to_sqs_sms_callbacks_ecr_arn
+  sms_monthly_spend_limit                            = dependency.common.outputs.sns_monthly_spend_limit
 }
 
 terraform {