diff --git a/src/schema/type-defs.ts b/src/schema/type-defs.ts
index 9bd7ad0..1a0267e 100644
--- a/src/schema/type-defs.ts
+++ b/src/schema/type-defs.ts
@@ -25,7 +25,14 @@ export default gql`
     scalar Date
     "only time hh-mm-ss"
     scalar Time
-
+    """
+    is of american format [-]$[0-9]+.[0-9][0-9]
+    commas every three digits and . for decimals with 2 digits after the .
+    There can be a leading  -.
+    There is a currency signe at the first position or second position if - is set.
+    The kind of currency depends on the database.
+    """
+    scalar Money
     "The CargoBike type is central to the graph. You could call it the root."
     type CargoBike {
         id: ID!
@@ -171,7 +178,7 @@ export default gql`
         There is a currency signe at the first position or second position if - is set.
         The kind of currency depends on the database.
         """
-        projectAllowance: String
+        projectAllowance: Money
         notes: String
     }
 
@@ -197,7 +204,7 @@ export default gql`
         You can pass a currency signe at the first position or second position of + or - is set.
         The kind of currency depends on the database.
         """
-        projectAllowance: String
+        projectAllowance: Money
         notes: String
     }
 
@@ -223,7 +230,7 @@ export default gql`
         You can pass a currency signe at the first position or second position of + or - is set.
         The kind of currency depends on the database.
         """
-        projectAllowance: String
+        projectAllowance: Money
         notes: String
     }