diff --git a/hosted/json-schemas/quote.schema.json b/hosted/json-schemas/quote.schema.json
index 8fbd416d..1198c438 100644
--- a/hosted/json-schemas/quote.schema.json
+++ b/hosted/json-schemas/quote.schema.json
@@ -10,19 +10,23 @@
           "type": "string",
           "description": "ISO 4217 currency code string"
         },
-        "amount": {
+        "subtotal": {
           "$ref": "definitions.json#/definitions/decimalString",
-          "description": "The amount of currency expressed in the smallest respective unit"
+          "description": "The amount of currency paid for the exchange, excluding fees"
         },
         "fee": {
           "$ref": "definitions.json#/definitions/decimalString",
-          "description": "The amount paid in fees"
+          "description": "The amount of currency paid in fees"
+        },
+        "total": {
+          "$ref": "definitions.json#/definitions/decimalString",
+          "description": "The total amount of currency to be paid in or paid out. It is always a sum of subtotal and fee"
         },
         "paymentInstruction": {
           "$ref": "#/definitions/PaymentInstruction"
         }
       },
-      "required": ["currencyCode", "amount"]
+      "required": ["currencyCode", "subtotal", "total"]
     },
     "PaymentInstruction": {
       "type": "object",
diff --git a/specs/protocol/README.md b/specs/protocol/README.md
index c649d094..3b662aa2 100644
--- a/specs/protocol/README.md
+++ b/specs/protocol/README.md
@@ -554,8 +554,9 @@ A `Close` can be sent by Alice _or_ the PFI at any point during the exchange, bu
 | field                | data type                                   | required | description                                                                                               |
 | -------------------- | ------------------------------------------- | -------- | --------------------------------------------------------------------------------------------------------- |
 | `currencyCode`       | string                                      | Y        | ISO 4217 currency code string                                                                             |
-| `amount`             | [`DecimalString`](#decimalstring)           | Y        | The amount of currency paid to the PFI or by the PFI excluding fees                                       |
-| `fee`                | [`DecimalString`](#decimalstring)           | N        | The amount paid in fees                                                                                   |
+| `subtotal`           | [`DecimalString`](#decimalstring)           | Y        | The amount of currency paid for the exchange, **excluding** fees                                          |
+| `fee`                | [`DecimalString`](#decimalstring)           | N        | The amount of currency paid in fees                                                                       |
+| `total`              | [`DecimalString`](#decimalstring)           | Y        | The total amount of currency to be paid in or paid out. It is always a sum of `subtotal` and `fee`        |
 | `paymentInstruction` | [`PaymentInstruction`](#paymentinstruction) | N        | Object that describes how to pay the PFI, and how to get paid by the PFI (e.g. BTC address, payment link) |
 
 #### `PaymentInstruction`
@@ -580,10 +581,21 @@ A `Close` can be sent by Alice _or_ the PFI at any point during the exchange, bu
     "expiresAt": "2023-09-13T23:11:17.315Z",
     "payoutUnitsPerPayinUnit": "16.654345",
     "payin": {
-      "link": "http://cash.app/pfi?currency=usd&amount=50"
+      "currencyCode": "USD",
+      "subtotal": "200.00",
+      "fee": "0.20",
+      "total": "200.20",
+      "paymentInstruction": {
+        "link": "https://example-pfi.com/payin?currency=usd&amount=200.20"
+      }
     },
     "payout": {
-      "instruction": "BTC will be paid to the provided BTC address",
+      "currencyCode": "BTC",
+      "subtotal": "0.000016",
+      "total": "0.000016",
+      "paymentInstruction": {
+        "instruction": "BTC will be paid to the provided BTC address"
+      }
     }
   },
   "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDprZXk6ejZNa29yZUMxVVJNUUVWS204d3h6aFZGbnRMenZQWFlidEg4Q0VGTktVY1NrTFdUI3o2TWtvcmVDMVVSTVFFVkttOHd4emhWRm50THp2UFhZYnRIOENFRk5LVWNTa0xXVCJ9..R_BBKJoWifPFh10GJ1ij2gCCxND1CdzKbiOgPCIha__0GvRy0rHYCi18-TY7jNARaQ94RHXHYIsCRm2MuOPACw"