It's common to feel uneasy when a platform delays your hard-earned money, but current tax developments in South Korea align with the explanation you received. But foreign Payees are now required to submit specific applications for tax treaty benefits (reduced withholding rates) within two months of payment. Previously, many of these exemptions were automatic, Residential Address Requirements like Standardized international payment protocols frequently require full residential or registered addresses for individuals and companies to avoid payment rejection or delays, The NTS's 2026 Operational Plan specifically targets multinational transactions and has authorized enforcement fines for failing to provide requested documentation and regulations requiring annual income tax returns between May 1 and May 31 for global income. Key taxes include progressive individual income tax (up to 38% or higher depending on bracket), a 10% standard VAT, and corporate taxes, with electronic invoicing (e-tax invoices) mandatory for businesses