paystack_flutter is a lightweight and developer-friendly Flutter package that allows you to seamlessly integrate Paystack's payment gateway into your Flutter apps. It supports multiple payment channels, including Card, Bank Transfer, Mobile Money (Ghana), USSD, and Direct Debit, making it suitable for apps targeting users in Nigeria, Ghana, and beyond.

🔐 Secure card payment integration

💸 Bank transfer and USSD payment support

📲 Mobile money payments for Ghana (MTN, Vodafone, AirtelTigo)

🏦 Direct debit from bank accounts

⚡ Custom metadata and callback support

🔁 Simple async service methods

✅ Easy error handling with status codes and messages

📦 Package-based asset loading (e.g., Paystack logo)

Installing paystack_flutter

In your ternimal:

  flutter pub add paystack_flutter

To run this project, you will need to add the following environment variables to your .env file

SECRET_KEY

This section demonstrates how to use the various services provided by the paystack_flutter package.

await BankTransferService.initializeTransfer(
       onFailure: (p0) {
        print(p0);
      },
      onSuccess: (p0) {
        
      },
  context: context,
  secretKey: yourSecretKey,
  email: 'user@example.com',
  amount: 100000,
  currency: 'GHS',
);

await MobileMoneyService.charge(
       onFailure: (p0) {
        print(p0);
      },
      onSuccess: (p0) {
        
      },
  context: context,
  secretKey: yourSecretKey,
  email: 'user@example.com',
  amount: 200000,
  currency: 'GHS',
  phone: '233XXXXXXXXX',
  provider: 'mtn',
);

await USSDPaymentService.initialize(
       onFailure: (p0) {
        print(p0);
      },
      onSuccess: (p0) {
        
      },
  context: context,
  secretKey: yourSecretKey,
  email: 'user@example.com',
  amount: 50000,
  currency: 'NGN',
  provider: USSDProvider.gtBank,
);

💡 Supported USSDProvider values: gtBank, uba, sterling, zenith

await DirectDebitBankService.initiate(
       onFailure: (p0) {
        print(p0);
      },
      onSuccess: (p0) {
        
      },
  context: context,
  secretKey: yourSecretKey,
  email: 'user@example.com',
  callbackUrl: 'https://yourdomain.com/callback',
  accountNumber: '0123456789',
  bankCode: '058',
  state: 'Lagos',
  city: 'Ikeja',
  street: '12 Main Street',
);

⚠️ Caution

• Keep your Paystack secret key secure — never expose it publicly.
• Please refer to the paystack webiste for allowed payment services in countries
• Some payment methods are region-specific. Please refer to paystack's website

• @Klassic Mak
• @QuinSefalloyd

MIT