You invoice a Singapore client ₹1M (about $12,000 USD). You need the money in a Bangkok account. Should it flow through Stripe, Wise, PayMongo, or a direct local corridor? The answer matters: the wrong rail costs you 3–5% per transaction—not a percentage, actual rupees or pesos that don't reach your account. This is not a feature comparison. It's a cost and cash-flow audit. Every payment rail in Southeast Asia has three hidden costs: FX spread (what they charge to convert), settlement time (when you see the money), and fraud holds (when they release it). You pick the wrong one, and a ₹1M invoice becomes a ₹950K deposit after 5 days. The four rails: what each one costs and when Southeast Asia has four main payment corridors. No single one is cheapest for all routes. Here's what you actually pay: Stripe FX spread: 1.5–2% (they call it "foreign exchange conversion"; it's on top of the base rate) Settlement: T+2 (two business days) Fraud hold: 7 days (they hold 10–15% of volume for chargeback protection) Best for: Inbound card payments from customers; worst for outbound payouts Stripe's advantage: it's everywhere. Your Indonesian customer can pay with a local card, and Stripe handles it. The cost: you wait a week for the money, and the FX conversion eats 1.5–2% before it settles. For a ₹1M invoice, that's ₹15–20K gone. Wise (formerly TransferWise) FX spread: 0.5–0.8% (the tightest of the four) Settlement: Same-day to T+1 (depending on corridor and time of day) Fraud hold: Instant (no holding period; money is yours immediately) Best for: Outbound payouts, cross-border invoicing, same-currency transfers between SGD/MYR/PHP accounts Wise wins on FX cost and speed. A ₹1M transfer lands in a Singapore account as SGD in under 24 hours, with less than 0.8% lost. The catch: it's transfer-only, not a payment processor. You can't accept customer card payments through Wise. PayMongo (Philippines, but expanding) FX spread: 1.2–1.5% (cheaper than Stripe, pricier than Wise) Settlement: T+1 (next business day) Fraud hold: 7 days (similar to Stripe, but less aggressive) Best for: Receiving PHP payments from Philippines customers; cross-border into PHP PayMongo is the regional upstart. If you invoice Philippine clients and accept PHP payments directly, it's genuinely cheaper than Stripe and faster to your PHP account. The FX spread is lower, and settlement is one day. The downside: it doesn't handle inbound international card payments as well as Stripe does. Local corridors (direct bank-to-bank or netting partnerships) FX spread: 0.2–0.5% (the cheapest, if you can access them) Settlement: T+1 to T+3 (depends on country pair and bank participation) Fraud hold: None (direct transfers are not held) Best for: Recurring payments between known entities (retainers, partner payouts, inter-company transfers) A SGD→MYR or IDR→PHP corridor exists if both sides have bank relationships in both countries. DBS Singapore, Maybank Malaysia, and BCA Indonesia participate in real-time gross settlement networks (RTGS) that bypass the middleman. Cost: minimal. Speed: same-day or next-day. Setup: months. You need a CFO or accountant to even know these exist. Real example: ₹1M invoice split across three countries You bill three clients: Singapore: SGD 8,500 Indonesia: IDR 180M (about USD 11,500) Malaysia: MYR 45,000 All three invoices total roughly USD 35,000. You want the money in your Singapore USD account within one week. Here's what each rail costs: Route A: Stripe for all three SGD 8,500 → USD: 2% spread = USD 165 lost IDR 180M → USD: 2% spread = USD 230 lost MYR 45,000 → USD: 2% spread = USD 290 lost Total FX cost: USD 685 Settlement: T+2 + 7-day hold = 9 days Total: USD 34,315 in 9 days Route B: Wise for outbound, Stripe for inbound Singapore client pays Stripe USD directly: 1.5% = USD 130 You transfer remaining SGD 8,500 via Wise to USD: 0.6% = USD 50 Indonesia client pays Stripe IDR directly: 1.5% = USD 170 You transfer IDR balance via Wise: 0.6% = USD 70 Malaysia client pays Stripe MYR directly: 1.5% = USD 215 You transfer MYR balance via Wise: 0.6% = USD 165 Total FX cost: USD 370 Inbound Stripe settlement: T+2 + 7 days. Wise outbound: T+0 (same day) Total: USD 34,630 in 2 days + additional amounts in 1 day Route C: Local corridors + PayMongo for Philippines SGD 8,500 direct DBS-to-DBS transfer: 0.3% = USD 25 IDR 180M via BCA-to-DBS RTGS: 0.3% = USD 35 MYR 45,000 via Maybank corridor: 0.3% = USD 135 Total FX cost: USD 195 Settlement: T+1 for all three Total: USD 34,805 in 1 day Route C saves USD 490 compared to Route A (1.4% of total), but it requires pre-set bank accounts in each country and months of setup. Route B is achievable in a week: open Wise, keep Stripe. It saves USD 315 (0.9%) and gets you paid faster. Route A is the default: it's easiest and costs the most. For agencies processing 10+ invoices per month across three countries, the difference between Stripe-only and a hybrid approach (Stripe + Wise) is 1–2% of monthly revenue.