diff --git a/docs/DeveloperGuide.md b/docs/DeveloperGuide.md
index 98ea0ab86a3..3dcaea86494 100644
--- a/docs/DeveloperGuide.md
+++ b/docs/DeveloperGuide.md
@@ -158,6 +158,27 @@ Classes used by multiple components are in the `seedu.address.commons` package.
 
 This section describes some noteworthy details on how certain features are implemented.
 
+### List Transactions `listt INDEX`
+
+#### Implementation
+
+The list transactions command allows for users to view all transactions for the specified person. Notably, when the command is used, `Model#updateFilteredPersonList()` is called to update the person list to just contain that specified person. It also implements the following operations:
+
+* `Model#setIsViewTransactions(boolean)` — Displays the person list in the GUI when false, and displays the transactions list in the GUI when true.
+* `Model#updateTransactionList(ObservableList<Transaction>)` — Updates the transaction list to contain transactions for the specified person.
+
+The following sequence diagram shows an example execution of command `listt 1`.
+
+<puml src="diagrams/ListTransactionsDiagram.puml" width="550" />
+
+#### Side Effects
+
+As a result of `listt INDEX` changing the person list, operations on the transactions (e.g. `deletet` and `summary`) can now be performed on the transactions list, without specifying the person index.
+
+The following activity diagram shows how the user should use some of our transaction-related commands.
+
+<puml src="diagrams/ListTransactionsActivityDiagram.puml" width="550" />
+
 ### \[Proposed\] Undo/redo feature
 
 #### Proposed Implementation
diff --git a/docs/diagrams/ListTransactionsActivityDiagram.puml b/docs/diagrams/ListTransactionsActivityDiagram.puml
new file mode 100644
index 00000000000..09610ccd485
--- /dev/null
+++ b/docs/diagrams/ListTransactionsActivityDiagram.puml
@@ -0,0 +1,22 @@
+@startuml
+skin rose
+skinparam ActivityFontSize 15
+skinparam ArrowFontSize 12
+start
+:User executes listt command;
+:Model updates person list;
+:GUI displays transactions list;
+
+'Since the beta syntax does not support placing the condition outside the
+'diamond we place it as the true branch instead.
+
+if () then ([execute deletet command])
+    :Delete transaction;
+    :Model updates transaction list;
+else([execute summary command])
+    :Model filters transaction list;
+endif
+
+:GUI displays transaction list;
+stop
+@enduml
diff --git a/docs/diagrams/ListTransactionsDiagram.puml b/docs/diagrams/ListTransactionsDiagram.puml
new file mode 100644
index 00000000000..66d67303f51
--- /dev/null
+++ b/docs/diagrams/ListTransactionsDiagram.puml
@@ -0,0 +1,58 @@
+@startuml
+!include style.puml
+skinparam ArrowFontStyle plain
+
+box Logic LOGIC_COLOR_T1
+participant ":LogicManager" as LogicManager LOGIC_COLOR
+participant ":AddressBookParser" as AddressBookParser LOGIC_COLOR
+participant "t:ListTransactionCommand" as ListTransactionCommand LOGIC_COLOR
+end box
+
+box Model MODEL_COLOR_T1
+participant ":Model" as Model MODEL_COLOR
+end box
+[-> LogicManager : execute(listt 1)
+activate LogicManager
+
+LogicManager -> AddressBookParser : parseCommand(listt 1))
+activate AddressBookParser
+
+create ListTransactionCommand
+AddressBookParser -> ListTransactionCommand
+activate ListTransactionCommand
+
+ListTransactionCommand --> AddressBookParser
+deactivate ListTransactionCommand
+
+AddressBookParser --> LogicManager : t
+deactivate AddressBookParser
+
+LogicManager -> ListTransactionCommand : execute()
+activate ListTransactionCommand
+
+ListTransactionCommand -> Model : updateFilteredPersonList()
+activate Model
+
+Model --> ListTransactionCommand
+deactivate Model
+
+ListTransactionCommand -> Model : setViewTransactions(true)
+activate Model
+
+Model --> ListTransactionCommand
+deactivate Model
+
+ListTransactionCommand -> Model : updateTransactionList()
+activate Model
+
+Model --> ListTransactionCommand
+deactivate Model
+
+ListTransactionCommand --> LogicManager : result
+deactivate ListTransactionCommand
+ListTransactionCommand -[hidden]-> LogicManager : result
+destroy ListTransactionCommand
+
+[<--LogicManager
+deactivate LogicManager
+@enduml