2 Best APIs for GTBank in Nigeria

Squad is a Nigerian payment gateway and developer-first payment infrastructure platform operated by HabariPay Limited, the fintech subsidiary of Guaranty Trust Holding Company (GTCO) — the parent company of Guaranty Trust Bank, one of Nigeria's Tier 1 commercial banks. This institutional backing gives Squad a unique position in the Nigerian fintech ecosystem: it combines the regulatory standing of a CBN-licensed commercial bank group with a modern API-first developer experience. Squad is available at squadco.com and provides documentation at docs.squadco.com. The Squad API is RESTful with JSON payloads. Authentication is via Bearer Token — developers obtain a secret key from the Squad dashboard and pass it in every request as Authorization: Bearer sk_test_xxxx (sandbox) or Authorization: Bearer sk_live_xxxx (production). All amounts are passed in Naira (NGN), unlike some Nigerian gateways that require amounts in Kobo. Squad's payment gateway supports card payments (Verve, Visa, Mastercard), bank transfers, and USSD — the three primary payment channels used by Nigerian consumers. The standard integration follows a three-step flow: initialize a transaction by posting to the Squad initiate endpoint with amount, email, and a unique transaction reference; display the Squad checkout widget to the customer; and verify the transaction on your server after the customer completes payment. Squad provides both a hosted checkout page and an embeddable inline SDK for seamless checkout experiences. One of Squad's most notable differentiators is its fee structure. The payment gateway charges a percentage fee capped at ₦1,500 per transaction — lower than Paystack (₦2,000 cap) and Monnify (₦2,000 cap). For virtual account collections, Squad charges a percentage capped at ₦1,000, which is again among the lowest caps in the Nigerian market for bank transfer collections. Payment links (used for social commerce and invoicing) are charged at 1% for local transactions and 3.5% for international transactions. This pricing advantage makes Squad particularly attractive for businesses processing high-value transactions, where the cap limits the absolute cost per transaction regardless of size. Squad's Virtual Accounts feature assigns a dedicated bank account number to each customer for use in collections. Businesses can create virtual accounts for individual customers — when a customer transfers any amount to their dedicated account, the Squad webhook fires and the balance is credited in real time. This is widely used by Nigerian savings apps, investment platforms, and bill payment services where customers top up wallets via bank transfer. The Subscription API allows platforms to create recurring billing products. When a customer first pays via Squad, the platform receives a unique charge token tied to that customer's card. Future charges can be triggered by passing this token without requiring the customer to re-enter card details — enabling automatic monthly subscriptions, usage-based billing, and installment plans for Nigerian consumers. Squad also provides a Payouts API for disbursing funds to any Nigerian bank account. Developers submit a destination bank code, account number, and amount, and Squad executes the transfer. Payout pricing is competitive and the API supports both single and bulk transfers. The BVN verification endpoint available through Squad allows platforms to look up a Bank Verification Number and return the associated name and basic identity information. This is commonly used by Nigerian lending products and fintech apps to confirm user identity as part of CBN-required KYC processes. The Squad sandbox environment provides full test mode access. Developers can test all features — gateway payments, virtual accounts, subscriptions, payouts, and BVN verification — using test credentials without processing real transactions. Moving to live requires completing Squad's business onboarding, including submitting CAC registration, director BVN, and a valid business bank account. From a compliance perspective, HabariPay Limited is a CBN-licensed Payment Service Provider operating under the regulatory oversight of the Central Bank of Nigeria. GTCO's banking license adds an additional layer of institutional compliance. Squad is also PCI-DSS certified, ensuring that card payment data is processed and stored to the highest security standards. Squad runs an annual Hackathon for Nigerian students and early-career developers — Squad by GTBank Hackathon — providing cash prizes and API credits to winners. This investment in the developer community has built significant goodwill among Nigeria's emerging developer ecosystem. Known challenges: Squad's documentation, while functional, is less comprehensive than Paystack's. Some advanced integration patterns (split payments, multi-vendor marketplace flows) are not as fully documented. The Squad developer community is smaller than Paystack's, which can make troubleshooting harder for niche use cases. Frequently Asked Questions: Is Squad backed by GTBank? Yes — Squad is operated by HabariPay Limited, which is a subsidiary of Guaranty Trust Holding Company (GTCO), the same holding company that owns GTBank. What is the fee cap advantage? Squad's gateway fee is capped at ₦1,500 versus ₦2,000 for Paystack and Monnify — meaning on large transactions, you save ₦500 per collection. Does Squad support dollar transactions? Squad supports international card payments (Visa/Mastercard). Settlement is in NGN. Can I test Squad without registering a business? Yes — create a free developer account and use the sandbox with test credentials before submitting any business documents.