diff --git a/billing.go b/billing.go
new file mode 100644
index 0000000..b6a9a32
--- /dev/null
+++ b/billing.go
@@ -0,0 +1,3 @@
+package paypalsdk
+
+import ()
diff --git a/billing_test.go b/billing_test.go
new file mode 100644
index 0000000..d8e75dc
--- /dev/null
+++ b/billing_test.go
@@ -0,0 +1,164 @@
+package paypalsdk
+
+import (
+	"encoding/json"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestJsonStructure(t *testing.T) {
+	expected_str := `{
+  "name": "Plan with Regular and Trial Payment Definitions",
+  "description": "Plan with regular and trial payment definitions.",
+  "type": "fixed",
+  "payment_definitions": [
+  {
+    "name": "Regular payment definition",
+    "type": "REGULAR",
+    "frequency": "MONTH",
+    "frequency_interval": "2",
+    "amount":
+    {
+      "value": "100",
+      "currency": "USD"
+    },
+    "cycles": "12",
+    "charge_models": [
+    {
+      "type": "SHIPPING",
+      "amount":
+      {
+        "value": "10",
+        "currency": "USD"
+      }
+    },
+    {
+      "type": "TAX",
+      "amount":
+      {
+        "value": "12",
+        "currency": "USD"
+      }
+    }]
+  },
+  {
+    "name": "Trial payment definition",
+    "type": "trial",
+    "frequency": "week",
+    "frequency_interval": "5",
+    "amount":
+    {
+      "value": "9.19",
+      "currency": "USD"
+    },
+    "cycles": "2",
+    "charge_models": [
+    {
+      "type": "SHIPPING",
+      "amount":
+      {
+        "value": "1",
+        "currency": "USD"
+      }
+    },
+    {
+      "type": "TAX",
+      "amount":
+      {
+        "value": "2",
+        "currency": "USD"
+      }
+    }]
+  }],
+  "merchant_preferences":
+  {
+    "setup_fee":
+    {
+      "value": "1",
+      "currency": "USD"
+    },
+    "return_url": "http://www.paypal.com",
+    "cancel_url": "http://www.paypal.com/cancel",
+    "auto_bill_amount": "YES",
+    "initial_fail_amount_action": "CONTINUE",
+    "max_fail_attempts": "0"
+  }
+}`
+	plan := BillingPlan{
+		Name:        "Plan with Regular and Trial Payment Definitions",
+		Description: "Plan with regular and trial payment definitions.",
+		Type:        "fixed",
+		PaymentDefinitions: []PaymentDefinition{
+			PaymentDefinition{
+				Name:              "Regular payment definition",
+				Type:              "REGULAR",
+				Frequency:         "MONTH",
+				FrequencyInterval: "2",
+				Amount: AmountPayout{
+					Value:    "100",
+					Currency: "USD",
+				},
+				Cycles: "12",
+				ChargeModels: []ChargeModel{
+					ChargeModel{
+						Type: "SHIPPING",
+						Amount: AmountPayout{
+							Value:    "10",
+							Currency: "USD",
+						},
+					},
+					ChargeModel{
+						Type: "TAX",
+						Amount: AmountPayout{
+							Value:    "12",
+							Currency: "USD",
+						},
+					},
+				},
+			},
+			PaymentDefinition{
+				Name:              "Trial payment definition",
+				Type:              "trial",
+				Frequency:         "week",
+				FrequencyInterval: "5",
+				Amount: AmountPayout{
+					Value:    "9.19",
+					Currency: "USD",
+				},
+				Cycles: "2",
+				ChargeModels: []ChargeModel{
+					ChargeModel{
+						Type: "SHIPPING",
+						Amount: AmountPayout{
+							Value:    "1",
+							Currency: "USD",
+						},
+					},
+					ChargeModel{
+						Type: "TAX",
+						Amount: AmountPayout{
+							Value:    "2",
+							Currency: "USD",
+						},
+					},
+				},
+			},
+		},
+		MerchantPreferences: MerchantPreferences{
+			SetupFee: AmountPayout{
+				Value:    "1",
+				Currency: "USD",
+			},
+			ReturnUrl:               "http://www.paypal.com",
+			CancelUrl:               "http://www.paypal.com/cancel",
+			AutoBillAmount:          "YES",
+			InitialFailAmountAction: "CONTINUE",
+			MaxFailAttempts:         "0",
+		},
+	}
+	_, err := json.Marshal(&plan)
+	expected := new(BillingPlan)
+	json.Unmarshal([]byte(expected_str), expected)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, &plan, "Wrong billing builder")
+}
diff --git a/types.go b/types.go
index 074a46f..1860cfa 100644
--- a/types.go
+++ b/types.go
@@ -93,6 +93,15 @@ type (
 		SenderBatchHeader *SenderBatchHeader `json:"sender_batch_header,omitempty"`
 	}
 
+	// BillingPlan struct
+	BillingPlan struct {
+		Name                string              `json:"name,omitempty"`
+		Description         string              `json:"description,omitempty"`
+		Type                string              `json:"type,omitempty"`
+		PaymentDefinitions  []PaymentDefinition `json:"payment_definitions,omitempty"`
+		MerchantPreferences MerchantPreferences `json:"merchant_preferences,omitempty"`
+	}
+
 	// Capture struct
 	Capture struct {
 		Amount         *Amount    `json:"amount,omitempty"`
@@ -105,14 +114,20 @@ type (
 		Links          []Link     `json:"links,omitempty"`
 	}
 
+	// ChargeModel struct
+	ChargeModel struct {
+		Type   string       `json:"type,omitempty"`
+		Amount AmountPayout `json:"amount,omitempty"`
+	}
+
 	// Client represents a Paypal REST API Client
 	Client struct {
-		Client   *http.Client
-		ClientID string
-		Secret   string
-		APIBase  string
-		Log      io.Writer // If user set log file name all requests will be logged there
-		Token    *TokenResponse
+		Client         *http.Client
+		ClientID       string
+		Secret         string
+		APIBase        string
+		Log            io.Writer // If user set log file name all requests will be logged there
+		Token          *TokenResponse
 		tokenExpiresAt time.Time
 	}
 
@@ -218,6 +233,16 @@ type (
 		Enctype string `json:"enctype,omitempty"`
 	}
 
+	// MerchantPreferences struct
+	MerchantPreferences struct {
+		SetupFee                AmountPayout `json:"setup_fee,omitempty"`
+		ReturnUrl               string       `json:"return_url,omitempty"`
+		CancelUrl               string       `json:"cancel_url,omitempty"`
+		AutoBillAmount          string       `json:"auto_bill_amount,omitempty"`
+		InitialFailAmountAction string       `json:"initial_fail_amount_action,omitempty"`
+		MaxFailAttempts         string       `json:"max_fail_attempts,omitempty"`
+	}
+
 	// Order struct
 	Order struct {
 		ID            string     `json:"id,omitempty"`
@@ -263,6 +288,17 @@ type (
 		ExperienceProfileID string        `json:"experience_profile_id,omitempty"`
 	}
 
+	// PaymentDefinition struct
+	PaymentDefinition struct {
+		Name              string        `json:"name,omitempty"`
+		Type              string        `json:"type,omitempty"`
+		Frequency         string        `json:"frequency,omitempty"`
+		FrequencyInterval string        `json:"frequency_interval,omitempty"`
+		Amount            AmountPayout  `json:"amount,omitempty"`
+		Cycles            string        `json:"cycles,omitempty"`
+		ChargeModels      []ChargeModel `json:"charge_models,omitempty"`
+	}
+
 	// PaymentResponse structure
 	PaymentResponse struct {
 		ID    string `json:"id"`