Off-Ramp Gateway Development (Crypto → Fiat)
Off-ramp gateway enables crypto to fiat conversion. User sends crypto, receives fiat to bank account. Requires same compliance as on-ramp: KYC, AML, FATF Travel Rule.
Key Differences from On-Ramp
Detect structuring/circular flows, monitor suspicious patterns, maintain transaction records per AML. Integrate bank partners (Silvergate, Circle, Wise) for settlement. Handle staking/DeFi returns taxation.
Implementation
Crypto Receiving — accept crypto at user wallet address. Validate transaction on-chain, confirm receipt.
Crypto Custody — hold crypto in secure multi-sig wallets pending fiat transfer.
Fiat Payout — convert crypto to fiat via OTC desk or exchange, execute bank transfer (SEPA, SWIFT, ACH).
AML Monitoring — flag suspicious patterns: rapid in/out flows, circular transactions, sanctions-list addresses.
Tax Reporting — track gains/losses, generate reports for user and regulatory bodies where required.
Cost Structure
Lower fees than on-ramp due to predictable crypto supply. Typical: 2-3% for bank transfer, 4-6% for card (prepaid). Margins come from FX spreads, settlement timing.
Integrate aggregators (MoonPay Off-Ramp, Transak, Banxa) for faster MVP. Build proprietary system for volumes > 100 transactions/day for margin optimization.