diff --git a/features/payment-qr/__tests__/paymentUri.test.ts b/features/payment-qr/__tests__/paymentUri.test.ts
index 7d8802c9..5a125162 100644
--- a/features/payment-qr/__tests__/paymentUri.test.ts
+++ b/features/payment-qr/__tests__/paymentUri.test.ts
@@ -61,6 +61,46 @@ describe("buildPaymentUri", () => {
     expect(buildPaymentUri(request)).toBe(buildPaymentUri(request));
   });
 
+  it("includes memo_type for ID, hash, and return memos", () => {
+    const validHash = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef";
+
+    expect(
+      parsePaymentUri(
+        buildPaymentUri({
+          destination,
+          amount: "10",
+          asset: { kind: "native" },
+          memo: "9223372036854775807",
+          memoType: "id"
+        })
+      )
+    ).toMatchObject({ memo: "9223372036854775807", memo_type: "MEMO_ID" });
+
+    expect(
+      parsePaymentUri(
+        buildPaymentUri({
+          destination,
+          amount: "10",
+          asset: { kind: "native" },
+          memo: validHash,
+          memoType: "hash"
+        })
+      )
+    ).toMatchObject({ memo: validHash, memo_type: "MEMO_HASH" });
+
+    expect(
+      parsePaymentUri(
+        buildPaymentUri({
+          destination,
+          amount: "10",
+          asset: { kind: "native" },
+          memo: validHash,
+          memoType: "return"
+        })
+      )
+    ).toMatchObject({ memo: validHash, memo_type: "MEMO_RETURN" });
+  });
+
   it("round-trips through the parser", () => {
     const uri = buildPaymentUri({
       destination,
diff --git a/features/payment-qr/components/PaymentQrForm.tsx b/features/payment-qr/components/PaymentQrForm.tsx
index 9a2ae624..3b027223 100644
--- a/features/payment-qr/components/PaymentQrForm.tsx
+++ b/features/payment-qr/components/PaymentQrForm.tsx
@@ -5,6 +5,12 @@ import { Button } from "@/core/ui/Button";
 import { Field } from "@/core/ui/Field";
 import { Input, Select } from "@/core/ui/Input";
 import { copy } from "@/features/payment-qr/copy";
+import {
+  MEMO_PLACEHOLDERS,
+  PAYMENT_MEMO_TYPE_GUIDANCE,
+  PAYMENT_MEMO_TYPES,
+  type PaymentMemoType
+} from "@/features/payment-qr/lib/memoTypes";
 import type { RawPaymentForm } from "@/features/payment-qr/schema";
 import type { PaymentQrField } from "@/features/payment-qr/types";
 
@@ -25,6 +31,7 @@ export function PaymentQrForm({
     assetKind: "native",
     assetCode: "",
     assetIssuer: "",
+    memoType: "text",
     memo: "",
     msg: ""
   });
@@ -134,6 +141,28 @@ export function PaymentQrForm({
       ) : null}
 
       <div className="grid gap-4 sm:grid-cols-2">
+        <Field label={copy.memoTypeLabel} hint={PAYMENT_MEMO_TYPE_GUIDANCE[form.memoType]}>
+          {({ inputId }) => (
+            <Select
+              id={inputId}
+              value={form.memoType}
+              onChange={(event) => set("memoType", event.target.value as PaymentMemoType)}
+            >
+              {PAYMENT_MEMO_TYPES.map((type) => (
+                <option key={type} value={type}>
+                  {type === "text"
+                    ? "Text memo"
+                    : type === "id"
+                      ? "ID memo"
+                      : type === "hash"
+                        ? "Hash memo"
+                        : "Return memo"}
+                </option>
+              ))}
+            </Select>
+          )}
+        </Field>
+
         <Field label={copy.memoLabel} hint={copy.memoHint} error={errorFor("memo")}>
           {({ inputId, describedBy, invalid }) => (
             <Input
@@ -142,7 +171,8 @@ export function PaymentQrForm({
               aria-invalid={invalid}
               value={form.memo}
               onChange={(event) => set("memo", event.target.value)}
-              placeholder="Invoice 1001"
+              placeholder={MEMO_PLACEHOLDERS[form.memoType]}
+              inputMode={form.memoType === "id" ? "numeric" : "text"}
               autoComplete="off"
             />
           )}
diff --git a/features/payment-qr/copy.ts b/features/payment-qr/copy.ts
index fc7d6e51..c7e5385d 100644
--- a/features/payment-qr/copy.ts
+++ b/features/payment-qr/copy.ts
@@ -10,8 +10,9 @@ export const copy = {
   assetIssued: "Issued asset",
   assetCodeLabel: "Asset code",
   assetIssuerLabel: "Asset issuer",
+  memoTypeLabel: "Memo type (optional)",
   memoLabel: "Memo (optional)",
-  memoHint: "A text memo, up to 28 bytes. Emoji and accented letters cost more than one byte.",
+  memoHint: "Choose a memo type, then enter a value that matches Stellar limits for that type.",
   msgLabel: "Message to the payer (optional)",
   msgHint: "Shown by the wallet before the payer confirms. Up to 300 characters.",
   submit: "Generate QR code",
@@ -54,6 +55,10 @@ export const errorCopy: Record<PaymentQrErrorCode, { title: string; description:
     title: "The memo is too long",
     description: "A Stellar text memo holds 28 bytes. Non-ASCII characters use more than one byte each."
   },
+  invalid_memo: {
+    title: "That memo value is not valid",
+    description: "Check the memo type guidance and enter a value that matches Stellar limits."
+  },
   message_too_long: {
     title: "The message is too long",
     description: "SEP-0007 limits the payer message to 300 characters."
diff --git a/features/payment-qr/fixtures/paymentQr.fixture.ts b/features/payment-qr/fixtures/paymentQr.fixture.ts
index e2a632e6..40dcf6d8 100644
--- a/features/payment-qr/fixtures/paymentQr.fixture.ts
+++ b/features/payment-qr/fixtures/paymentQr.fixture.ts
@@ -12,6 +12,7 @@ export const nativeForm: RawPaymentForm = {
   assetKind: "native",
   assetCode: "",
   assetIssuer: "",
+  memoType: "text",
   memo: "",
   msg: ""
 };
diff --git a/features/payment-qr/lib/memoTypes.ts b/features/payment-qr/lib/memoTypes.ts
new file mode 100644
index 00000000..4e0b036d
--- /dev/null
+++ b/features/payment-qr/lib/memoTypes.ts
@@ -0,0 +1,66 @@
+export type PaymentMemoType = "text" | "id" | "hash" | "return";
+
+export const PAYMENT_MEMO_TYPES: readonly PaymentMemoType[] = ["text", "id", "hash", "return"];
+
+export const PAYMENT_MEMO_TYPE_URI_VALUES: Record<PaymentMemoType, string> = {
+  text: "MEMO_TEXT",
+  id: "MEMO_ID",
+  hash: "MEMO_HASH",
+  return: "MEMO_RETURN"
+};
+
+export const PAYMENT_MEMO_TYPE_GUIDANCE: Record<PaymentMemoType, string> = {
+  text: "Use up to 28 bytes for invoices, order IDs, or short notes.",
+  id: "Use a whole number from 0 to 18446744073709551615.",
+  hash: "Use exactly 64 hexadecimal characters for a 32-byte hash.",
+  return: "Use exactly 64 hexadecimal characters for a 32-byte return hash."
+};
+
+export const MEMO_PLACEHOLDERS: Record<PaymentMemoType, string> = {
+  text: "Invoice 1001",
+  id: "9223372036854775807",
+  hash: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
+  return: "fedcba9876543210fedcba9876543210fedcba9876543210fedcba9876543210"
+};
+
+const MAX_UINT64 = BigInt("18446744073709551615");
+
+export function normalizePaymentMemo(memoType: PaymentMemoType, memo: string): string {
+  const value = memo.trim();
+
+  if (!value) {
+    throw new Error("Enter a memo value for the selected memo type.");
+  }
+
+  switch (memoType) {
+    case "text":
+      return value;
+    case "id": {
+      if (!/^\d+$/.test(value)) {
+        throw new Error("Memo ID must be a whole number from 0 to 18446744073709551615.");
+      }
+
+      const memoId = BigInt(value);
+
+      if (memoId < 0n || memoId > MAX_UINT64) {
+        throw new Error("Memo ID must be a whole number from 0 to 18446744073709551615.");
+      }
+
+      return value;
+    }
+    case "hash":
+    case "return": {
+      if (!/^[0-9a-fA-F]{64}$/.test(value)) {
+        throw new Error(
+          memoType === "hash"
+            ? "Memo hash must be exactly 64 hexadecimal characters."
+            : "Memo return value must be exactly 64 hexadecimal characters."
+        );
+      }
+
+      return value.toLowerCase();
+    }
+    default:
+      throw new Error("Choose a supported memo type.");
+  }
+}
diff --git a/features/payment-qr/lib/paymentUri.ts b/features/payment-qr/lib/paymentUri.ts
index 766ec55d..5110afbf 100644
--- a/features/payment-qr/lib/paymentUri.ts
+++ b/features/payment-qr/lib/paymentUri.ts
@@ -1,3 +1,4 @@
+import { PAYMENT_MEMO_TYPE_URI_VALUES } from "@/features/payment-qr/lib/memoTypes";
 import type { PaymentRequest } from "@/features/payment-qr/types";
 
 /**
@@ -17,8 +18,9 @@ export function buildPaymentUri(request: PaymentRequest): string {
   }
 
   if (request.memo) {
+    const memoType = request.memoType ?? "text";
     params.set("memo", request.memo);
-    params.set("memo_type", "MEMO_TEXT");
+    params.set("memo_type", PAYMENT_MEMO_TYPE_URI_VALUES[memoType]);
   }
 
   if (request.msg) params.set("msg", request.msg);
diff --git a/features/payment-qr/schema.ts b/features/payment-qr/schema.ts
index e35613c1..89ba2c56 100644
--- a/features/payment-qr/schema.ts
+++ b/features/payment-qr/schema.ts
@@ -1,5 +1,9 @@
 import { StrKey } from "@stellar/stellar-sdk";
 import { err, ok, type Result } from "@/core/result/result";
+import {
+  normalizePaymentMemo,
+  type PaymentMemoType
+} from "@/features/payment-qr/lib/memoTypes";
 import type {
   PaymentQrErrorCode,
   PaymentQrField,
@@ -25,6 +29,7 @@ export const FIELD_OF_CODE: Record<PaymentQrErrorCode, PaymentQrField | null> =
   invalid_asset_code: "assetCode",
   invalid_asset_issuer: "assetIssuer",
   memo_too_long: "memo",
+  invalid_memo: "memo",
   message_too_long: "msg",
   qr_generation_failed: null
 };
@@ -35,6 +40,7 @@ export interface RawPaymentForm {
   assetKind: "native" | "issued";
   assetCode: string;
   assetIssuer: string;
+  memoType: PaymentMemoType;
   memo: string;
   msg: string;
 }
@@ -48,7 +54,8 @@ export function parsePaymentRequest(
 ): Result<PaymentRequest, PaymentQrErrorCode> {
   const destination = raw.destination.replace(/\s+/g, "");
   const amount = raw.amount.trim();
-  const memo = raw.memo.trim();
+  const memoType = raw.memoType ?? "text";
+  const memoInput = raw.memo.trim();
   const msg = raw.msg.trim();
 
   if (!destination) return err("empty_destination");
@@ -58,9 +65,24 @@ export function parsePaymentRequest(
   if (!AMOUNT.test(amount) || Number(amount) <= 0) return err("invalid_amount");
   if ((amount.split(".")[1] ?? "").length > MAX_DECIMALS) return err("amount_too_precise");
 
-  // A text memo is limited by bytes, not characters: emoji and accented
-  // letters cost more than one byte each.
-  if (memo && byteLength(memo) > MEMO_MAX_BYTES) return err("memo_too_long");
+  let memo: string | undefined;
+  let resolvedMemoType: PaymentMemoType | undefined;
+
+  if (memoInput) {
+    if (memoType === "text") {
+      if (byteLength(memoInput) > MEMO_MAX_BYTES) return err("memo_too_long");
+      memo = memoInput;
+      resolvedMemoType = "text";
+    } else {
+      try {
+        memo = normalizePaymentMemo(memoType, memoInput);
+        resolvedMemoType = memoType;
+      } catch {
+        return err("invalid_memo");
+      }
+    }
+  }
+
   if (msg.length > MSG_MAX_LENGTH) return err("message_too_long");
 
   if (raw.assetKind === "native") {
@@ -68,7 +90,8 @@ export function parsePaymentRequest(
       destination,
       amount,
       asset: { kind: "native" },
-      memo: memo || undefined,
+      memo,
+      memoType: resolvedMemoType,
       msg: msg || undefined
     });
   }
@@ -84,7 +107,8 @@ export function parsePaymentRequest(
     destination,
     amount,
     asset: { kind: "issued", code: code.toUpperCase(), issuer },
-    memo: memo || undefined,
+    memo,
+    memoType: resolvedMemoType,
     msg: msg || undefined
   });
 }
diff --git a/features/payment-qr/types.ts b/features/payment-qr/types.ts
index 3787c1c7..7fd0bfff 100644
--- a/features/payment-qr/types.ts
+++ b/features/payment-qr/types.ts
@@ -1,3 +1,5 @@
+import type { PaymentMemoType } from "@/features/payment-qr/lib/memoTypes";
+
 export type PaymentAsset =
   | { kind: "native" }
   | { kind: "issued"; code: string; issuer: string };
@@ -7,6 +9,7 @@ export interface PaymentRequest {
   amount: string;
   asset: PaymentAsset;
   memo?: string;
+  memoType?: PaymentMemoType;
   /** Free-text label shown by the wallet, from SEP-0007. */
   msg?: string;
 }
@@ -27,6 +30,7 @@ export type PaymentQrErrorCode =
   | "invalid_asset_code"
   | "invalid_asset_issuer"
   | "memo_too_long"
+  | "invalid_memo"
   | "message_too_long"
   | "qr_generation_failed";
 
@@ -35,5 +39,6 @@ export type PaymentQrField =
   | "amount"
   | "assetCode"
   | "assetIssuer"
+  | "memoType"
   | "memo"
   | "msg";