Billing & payments

Payment channels, top-ups, invoices, promotions and resource quotas.

• Payment channels — How customers top up their wallet in NexCMP — the available channels, how to enable each one, fees, limits and how to watch them.
• Stripe — Connect Stripe to NexCMP for card payments, Apple Pay, Google Pay, Link and Alipay — API keys, webhook, domain registration and a test payment.
• PayPal — Connect PayPal to NexCMP for wallet top-ups — REST app credentials, webhook, sandbox testing and saved PayPal accounts.
• USDT (Binance) — Accept USDT wallet top-ups by watching a Binance deposit address — read-only API key, network choice, address verification and unmatched deposits.
• Bank transfer (Vietnam) — Accept Vietnamese bank transfers (VND) with Sepay — receiving account, memo prefix, webhook, limits, and how to assign unmatched transfers.
• Minimum top-up — Set the smallest and largest wallet top-up per payment, and understand the other balance floors that decide whether a customer can order.
• Saved payment methods — How customers save a card, a Stripe wallet or a PayPal account for automatic top-up, how to remove them, and what NexCMP stores.
• Auto top-up — Keep customer wallets funded automatically from a saved card or PayPal account — usage-based and fixed modes, global limits and failure handling.
• Invoices and ledger — Where money is recorded in NexCMP — the wallet ledger, invoices, top-up payments, refunds and payouts, vouchers and revenue reports.
• Promotions — Issue top-up codes: wallet bonuses, service-only credit and percentage discounts with a cap and a minimum order — create, distribute and track them.
• Quotas — Limit what a new customer can create until they have funded their wallet — VM resource tiers, VM count and per-service quotas, with per-customer overrides.