diff --git a/pkg/spec/test/folio-submit-balance-predicate.test.ts b/pkg/spec/test/folio-submit-balance-predicate.test.ts
index d676d6c..90c0885 100644
--- a/pkg/spec/test/folio-submit-balance-predicate.test.ts
+++ b/pkg/spec/test/folio-submit-balance-predicate.test.ts
@@ -11,6 +11,7 @@ const submitOn = "testTag:LedgerScreen > testTag:TxnSubmit";
 test("single submit: delta matches typed amount", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: submitOn },
       typedAmount: 500,
       prevTotalBalance: 1000,
@@ -23,6 +24,7 @@ test("single submit: delta matches typed amount", () => {
 test("double submit: delta is twice the typed amount, fires", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: submitOn },
       typedAmount: 500,
       prevTotalBalance: 1000,
@@ -35,6 +37,7 @@ test("double submit: delta is twice the typed amount, fires", () => {
 test("DoubleTap kind also caught when delta exceeds typed amount", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "DoubleTap", on: submitOn },
       typedAmount: 500,
       prevTotalBalance: 0,
@@ -47,6 +50,7 @@ test("DoubleTap kind also caught when delta exceeds typed amount", () => {
 test("wrong action kind: vacuous true even with mismatch", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "InputText", on: submitOn },
       typedAmount: 500,
       prevTotalBalance: 1000,
@@ -59,6 +63,7 @@ test("wrong action kind: vacuous true even with mismatch", () => {
 test("wrong target: vacuous true even with mismatch", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: "testTag:LoginScreen > testTag:LoginSubmit" },
       typedAmount: 500,
       prevTotalBalance: 1000,
@@ -71,6 +76,7 @@ test("wrong target: vacuous true even with mismatch", () => {
 test("null lastAction: vacuous true", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: null,
       typedAmount: 500,
       prevTotalBalance: 1000,
@@ -83,6 +89,7 @@ test("null lastAction: vacuous true", () => {
 test("zero typedAmount: vacuous true", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: submitOn },
       typedAmount: 0,
       prevTotalBalance: 1000,
@@ -95,6 +102,7 @@ test("zero typedAmount: vacuous true", () => {
 test("selector as object: coerced safely and TxnSubmit detected", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: { testTag: "TxnSubmit" } },
       typedAmount: 500,
       prevTotalBalance: 0,
@@ -107,6 +115,7 @@ test("selector as object: coerced safely and TxnSubmit detected", () => {
 test("selector as object without TxnSubmit: vacuous true", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: { testTag: "LoginSubmit" } },
       typedAmount: 500,
       prevTotalBalance: 0,
@@ -119,6 +128,7 @@ test("selector as object without TxnSubmit: vacuous true", () => {
 test("raw whole-dollar input: single submit clears", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: submitOn },
       typedAmount: parseTypedAmount("50"),
       prevTotalBalance: 5000,
@@ -131,6 +141,7 @@ test("raw whole-dollar input: single submit clears", () => {
 test("raw whole-dollar input: double submit fires", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: submitOn },
       typedAmount: parseTypedAmount("50"),
       prevTotalBalance: 5000,
@@ -143,6 +154,7 @@ test("raw whole-dollar input: double submit fires", () => {
 test("decimal input from empty prior balance clears", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "Tap", on: submitOn },
       typedAmount: parseTypedAmount("5.50"),
       prevTotalBalance: 0,
@@ -155,6 +167,7 @@ test("decimal input from empty prior balance clears", () => {
 test("DoubleTap kind with raw whole-dollar input fires", () => {
   assert.equal(
     submitChangesBalanceByTypedAmount({
+      route: "home",
       lastAction: { kind: "DoubleTap", on: submitOn },
       typedAmount: parseTypedAmount("100"),
       prevTotalBalance: 0,
@@ -163,3 +176,68 @@ test("DoubleTap kind with raw whole-dollar input fires", () => {
     false,
   );
 });
+
+test("route gate: ledger landing with stale carrier is skipped", () => {
+  assert.equal(
+    submitChangesBalanceByTypedAmount({
+      route: "ledger",
+      lastAction: { kind: "Tap", on: submitOn },
+      typedAmount: 5000,
+      prevTotalBalance: 0,
+      currTotalBalance: 0,
+    }),
+    true,
+  );
+});
+
+test("route gate: add-transaction landing with double-submit delta is skipped", () => {
+  assert.equal(
+    submitChangesBalanceByTypedAmount({
+      route: "add-transaction",
+      lastAction: { kind: "DoubleTap", on: submitOn },
+      typedAmount: 5000,
+      prevTotalBalance: 0,
+      currTotalBalance: 10000,
+    }),
+    true,
+  );
+});
+
+test("route gate: null route is skipped", () => {
+  assert.equal(
+    submitChangesBalanceByTypedAmount({
+      route: null,
+      lastAction: { kind: "Tap", on: submitOn },
+      typedAmount: 5000,
+      prevTotalBalance: 0,
+      currTotalBalance: 0,
+    }),
+    true,
+  );
+});
+
+test("route gate: home landing with matching delta passes", () => {
+  assert.equal(
+    submitChangesBalanceByTypedAmount({
+      route: "home",
+      lastAction: { kind: "Tap", on: submitOn },
+      typedAmount: 5000,
+      prevTotalBalance: 0,
+      currTotalBalance: 5000,
+    }),
+    true,
+  );
+});
+
+test("route gate: home landing with double-insert delta fires", () => {
+  assert.equal(
+    submitChangesBalanceByTypedAmount({
+      route: "home",
+      lastAction: { kind: "Tap", on: submitOn },
+      typedAmount: 5000,
+      prevTotalBalance: 0,
+      currTotalBalance: 10000,
+    }),
+    false,
+  );
+});