diff --git a/Domain_model.md b/Domain_model.md
new file mode 100644
index 0000000..b50d8b9
--- /dev/null
+++ b/Domain_model.md
@@ -0,0 +1,24 @@
+```
+As a supermarket shopper,
+So that I can pay for products at checkout,
+I'd like to be able to know the total cost of items in my basket.
+```
+
+| Classes  | Method                             | Scenario            | Outputs    |
+|----------|------------------------------------|---------------------|------------|
+| `Basket` | `CalculateTotalCost(List<String>)` | If basket has items | Total cost |
+|          |                                    | If no items         | 0          |
+|          |                                    |                     |            |
+
+```
+As an organised individual,
+So that I can evaluate my shopping habits,
+I'd like to see an itemised receipt that includes the name and price of the products
+I bought as well as the quantity, and a total cost of my basket.
+```
+
+| Classes  | Method                                            | Scenario            | Outputs                             |
+|----------|---------------------------------------------------|---------------------|-------------------------------------|
+| `Basket` | `GetItemandPrice(HashMap<String, Integer> items)` | If basket has items | Gets all the items from the Basket  |
+|          | `GetQuantityFromBasket()`                         | If basket has items | Quantity of each prodocut in Basket |
+|          | `GetTotalPriceandlist()`                          | If basket has items | Total cost and list                 |
diff --git a/domain-model.md b/domain-model.md
new file mode 100644
index 0000000..b50d8b9
--- /dev/null
+++ b/domain-model.md
@@ -0,0 +1,24 @@
+```
+As a supermarket shopper,
+So that I can pay for products at checkout,
+I'd like to be able to know the total cost of items in my basket.
+```
+
+| Classes  | Method                             | Scenario            | Outputs    |
+|----------|------------------------------------|---------------------|------------|
+| `Basket` | `CalculateTotalCost(List<String>)` | If basket has items | Total cost |
+|          |                                    | If no items         | 0          |
+|          |                                    |                     |            |
+
+```
+As an organised individual,
+So that I can evaluate my shopping habits,
+I'd like to see an itemised receipt that includes the name and price of the products
+I bought as well as the quantity, and a total cost of my basket.
+```
+
+| Classes  | Method                                            | Scenario            | Outputs                             |
+|----------|---------------------------------------------------|---------------------|-------------------------------------|
+| `Basket` | `GetItemandPrice(HashMap<String, Integer> items)` | If basket has items | Gets all the items from the Basket  |
+|          | `GetQuantityFromBasket()`                         | If basket has items | Quantity of each prodocut in Basket |
+|          | `GetTotalPriceandlist()`                          | If basket has items | Total cost and list                 |