diff --git a/CHANGELOG.md b/CHANGELOG.md
index 430f2b3ca..012dad5a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/).
 - `archera-comparison` command: a read-only, default-off comparison of an
   Archera commitment plan (table or JSON). See `docs/cli/archera-comparison.md`
   (#2156).
+- `--ri-account-scope` flag (`linked` default, `payer`) for Reserved Instance
+  recommendations, mirroring `--sp-account-scope` (#2181).
 
 ### Fixed
 
diff --git a/cmd/main.go b/cmd/main.go
index c78d8debe..e9ccbd136 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -49,6 +49,7 @@ type Config struct {
 	PaymentOption     string
 	CSVOutput         string
 	SPAccountScope    string
+	RIAccountScope    string
 	// RecLookbackPeriod controls the LookbackPeriodInDays passed to
 	// GetReservationPurchaseRecommendation. Valid values: "7d", "30d", "60d"
 	// (recommendations.DefaultRecLookbackPeriod is the shared default).
@@ -143,6 +144,7 @@ func init() {
 	rootCmd.Flags().StringSliceVar(&toolCfg.IncludeSPTypes, "include-sp-types", []string{}, "Only include these Savings Plan types (comma-separated: Compute, EC2Instance, SageMaker, Database)")
 	rootCmd.Flags().StringSliceVar(&toolCfg.ExcludeSPTypes, "exclude-sp-types", []string{}, "Exclude these Savings Plan types (comma-separated: Compute, EC2Instance, SageMaker, Database)")
 
+	rootCmd.Flags().StringVar(&toolCfg.RIAccountScope, "ri-account-scope", "linked", "Cost Explorer account scope for Reserved Instance recommendations: linked or payer (payer applies to a management account)")
 	rootCmd.Flags().StringVar(&toolCfg.SPAccountScope, "sp-account-scope", "linked", "Cost Explorer account scope for Savings Plan recommendations: linked or payer (payer applies to a management account)")
 
 	// Purchase pipeline flags
diff --git a/cmd/multi_service_helpers.go b/cmd/multi_service_helpers.go
index 4a107384f..84e0f2a6b 100644
--- a/cmd/multi_service_helpers.go
+++ b/cmd/multi_service_helpers.go
@@ -484,6 +484,7 @@ func fetchRecommendationsForRegion(
 		IncludeSPTypes: cfg.IncludeSPTypes,
 		ExcludeSPTypes: cfg.ExcludeSPTypes,
 		SPAccountScope: cfg.SPAccountScope,
+		RIAccountScope: cfg.RIAccountScope,
 	}
 	// For Savings Plans, region is only the endpoint the account-level call is
 	// signed in (spAPIRegion), not a filter. The provider folds params.Region
diff --git a/cmd/ri_account_scope_test.go b/cmd/ri_account_scope_test.go
new file mode 100644
index 000000000..9b07c3cca
--- /dev/null
+++ b/cmd/ri_account_scope_test.go
@@ -0,0 +1,48 @@
+package main
+
+import (
+	"context"
+	"testing"
+
+	"github.com/LeanerCloud/cloud-commitments-go/pkg/common"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestValidateRIAccountScope(t *testing.T) {
+	orig := toolCfg.RIAccountScope
+	t.Cleanup(func() { toolCfg.RIAccountScope = orig })
+	for scope, wantErr := range map[string]bool{"": false, "linked": false, "payer": false, "PAYER": false, "org": true} {
+		toolCfg.RIAccountScope = scope
+		err := validateRIAccountScope()
+		if wantErr {
+			require.Error(t, err, scope)
+			assert.Contains(t, err.Error(), "invalid ri-account-scope")
+		} else {
+			require.NoError(t, err, scope)
+		}
+	}
+}
+
+func TestRIAccountScopeFlagDefault(t *testing.T) {
+	f := rootCmd.Flags().Lookup("ri-account-scope")
+	require.NotNil(t, f)
+	assert.Equal(t, "linked", f.DefValue)
+}
+
+func TestFetchRecommendationsForRegion_PassesRIAccountScope(t *testing.T) {
+	captureAppLog(t)
+	client := &MockRecommendationsClient{}
+	var got *common.RecommendationParams
+	client.On("GetRecommendations", mock.Anything, mock.Anything).
+		Run(func(args mock.Arguments) { got = args.Get(1).(*common.RecommendationParams) }).
+		Return([]common.Recommendation{}, nil)
+
+	_, err := fetchRecommendationsForRegion(context.Background(), client, common.ServiceRDS, "us-east-1",
+		Config{TermYears: 1, RIAccountScope: "payer"})
+	require.NoError(t, err)
+
+	require.NotNil(t, got)
+	assert.Equal(t, "payer", got.RIAccountScope)
+}
diff --git a/cmd/validators.go b/cmd/validators.go
index 66ce09e23..abc337d38 100644
--- a/cmd/validators.go
+++ b/cmd/validators.go
@@ -43,7 +43,10 @@ func validateFlags(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	return validateSPAccountScope()
+	if err := validateSPAccountScope(); err != nil {
+		return err
+	}
+	return validateRIAccountScope()
 }
 
 // validateSPAccountScope validates --sp-account-scope. Empty means linked.
@@ -55,6 +58,15 @@ func validateSPAccountScope() error {
 	return fmt.Errorf("invalid sp-account-scope %q: must be linked or payer", toolCfg.SPAccountScope)
 }
 
+// validateRIAccountScope validates --ri-account-scope. Empty means linked.
+func validateRIAccountScope() error {
+	switch strings.ToLower(toolCfg.RIAccountScope) {
+	case "", "linked", "payer":
+		return nil
+	}
+	return fmt.Errorf("invalid ri-account-scope %q: must be linked or payer", toolCfg.RIAccountScope)
+}
+
 func validateServices(cmd *cobra.Command) error {
 	if cmd != nil && cmd.Flags().Changed("services") && len(toolCfg.Services) == 0 {
 		return fmt.Errorf("--services must contain at least one service")
diff --git a/docs/cli/README.md b/docs/cli/README.md
index 93583b87a..2dafc6cff 100644
--- a/docs/cli/README.md
+++ b/docs/cli/README.md
@@ -75,6 +75,7 @@ All flags belong to the root command unless noted otherwise.
 | `--exclude-accounts` | (none) | Exclude recommendations for these accounts, matched exactly (case-insensitive) on account name or ID. A value that only partly matches account names stops the run. |
 | `--include-sp-types` | (all) | Only include these Savings Plan types: `Compute`, `EC2Instance`, `SageMaker`, `Database`. |
 | `--exclude-sp-types` | (none) | Exclude these Savings Plan types. |
+| `--ri-account-scope` | `linked` | Cost Explorer account scope for Reserved Instance recommendations: `linked` or `payer`. A management account may only get recommendations at `payer` scope. |
 | `--sp-account-scope` | `linked` | Cost Explorer account scope for Savings Plan recommendations: `linked` or `payer`. A management account may only get recommendations at `payer` scope. |
 | `--include-extended-support` | `false` | By default, instances running engine versions in AWS Extended Support are excluded because Extended Support surcharges can erase RI savings. Pass this flag to include them. |