Create Invoice

BudPay's Invoice API allows you to create and send professional invoices to your customers. Customers can pay the invoice using various payment methods supported by BudPay.

Quick Overview

Create Invoice: Call the create invoice API with customer and invoice details.
Share Payment Link: Send the generated redirect link to your customer.
Customer Pays: Customer uses the link to view and pay the invoice.
Receive Notification: Get webhook notification when payment is completed.

Step 1: Creating a New Invoice

Use the create_invoice endpoint to generate a new invoice with customer details and line items.

Sample Request

Endpoint: POST https://api.budpay.com/api/v2/create_invoice

1curl -X POST 'https://api.budpay.com/api/v2/create_invoice' \2  -H 'Content-Type: application/json' \3  -H 'Authorization: Bearer YOUR_SECRET_KEY' \4  -d '{5  "title": "Test Invoice",6  "duedate": "2023-12-30",7  "currency": "NGN",8  "invoicenumber": "",9  "reminder": "",10  "email": "customer@email.com",11  "first_name": "John",12  "last_name": "Doe",13  "billing_address": "Carlton Gate estate, Akobo",14  "billing_city": "Ibadan",15  "billing_state": "Oyo",16  "billing_country": "Nigeria",17  "billing_zipcode": "234",18  "items": [19    {20      "description": "Professional Services",21      "quantity": "1",22      "unit_price": "1000",23      "meta_data": ""24    }25  ]26}'

{  "success": true,  "message": "Invoice created successfully",  "data": [    {      "invoice_id": 1,      "ref_id": "ovgsfdsfvsd",      "paycode": "2542jkdhdsioewewew",      "redirect_link": "https://budpay.com/invoice/payment/2542jkdhdsioewewew"    }  ]}

Parameters

This section details the header and request parameters required for creating an invoice.

Header Parameters

Field Name	Description
URL	`https://api.budpay.com/api/v2/create_invoice`
Method	`POST`
Authorization	`Bearer YOUR_SECRET_KEY` (Replace with your actual BudPay secret key)
Content-Type	`application/json`

Request Parameters

Parameter	Description	Required
`title`	Invoice title/subject	Yes
`duedate`	Invoice due date (YYYY-MM-DD format)	Yes
`currency`	Currency code (NGN, USD, GHS, KES)	Yes
`email`	Customer's email address	Yes
`first_name`	Customer's first name	Optional (but recommended)
`last_name`	Customer's last name	Optional (but recommended)
`billing_address`	Customer's billing address	Yes
`billing_city`	Customer's city	Yes
`billing_state`	Customer's state/province	Yes
`billing_country`	Customer's country	Yes
`billing_zipcode`	Customer's zip/postal code	Yes
`invoicenumber`	Custom invoice number	Optional
`reminder`	Reminder settings	Optional
`items`	Array of invoice line items	Yes

Items Array Parameters

Parameter	Description	Required
`description`	Item description	Yes
`quantity`	Item quantity	Yes
`unit_price`	Price per unit	Yes
`meta_data`	Additional metadata	Optional

ℹ️

You can add multiple items to an invoice by including additional objects in the items array.

Step 2: Share Payment Link

After creating the invoice, share the redirect_link from the response with your customer. The customer can use this link to view the invoice details and make payment.

Response Data

Field	Description
`invoice_id`	Unique invoice identifier in the BudPay system
`ref_id`	Invoice reference ID
`paycode`	Unique payment code for the invoice
`redirect_link`	Payment link to share with customer

Step 3: Customer Makes Payment

When the customer visits the redirect link, they will see the invoice details and can pay using any of BudPay's supported payment methods:

Card payments
Bank transfer
Mobile money (where available)

Step 4: Receive Notifications

Once the customer completes payment:

Webhook Notification: BudPay will send a webhook notification to your configured webhook URL with the invoice payment details.
Email Notification: Both you and your customer will receive email confirmations.

⚠️

Always verify invoice payment status using the transaction verification API before giving value to ensure the payment was successful.

Best Practices

Invoice Numbers: Use the invoicenumber field to maintain your own invoice numbering system for better tracking.
Due Dates: Set realistic due dates to give customers adequate time to pay.
Item Details: Provide clear, detailed descriptions in the items array for better transparency.
Customer Information: Include complete customer details (first_name, last_name) for professional invoices.
Currency: Ensure the currency matches your business location and customer preference.

Overview Overview