Comparing Payment Fees: The Real Cost of Cards, Convenience Stores, and Mobile Wallets
"Credit cards cost 2.75%" is probably the first number every new e-commerce operator memorizes. But once you actually start taking payments, you discover that's only the beginning of the cost structure: convenience-store payment codes charge a flat fee per transaction, cash on delivery means logistics plus payment costs, every mobile wallet has its own rate, and installments add another markup on top. And that's before you get to settlement timing — the fee rate decides how much you earn, but the payout cycle decides whether your cash flow survives.
Our own brand e-commerce store processes payments every day, with credit cards, convenience stores, cash on delivery, Apple Pay, and installments all switched on. This article lays out the cost structure of each payment method side by side. The numbers below are common market ranges — your actual rates depend on your volume and negotiating position, so always go by the payment provider's official pricing and your contract.
Cost overview of the major payment methods
| Payment method | Typical fee structure | Settlement speed | Hidden costs to watch |
|---|---|---|---|
| Credit card (single payment) | Roughly 2.0%–2.8% | Commonly T+3 or later, depending on plan | Chargeback handling; higher rates for foreign-issued cards |
| Credit card installments | Single-payment rate plus a markup that grows with the number of installments | Depends on plan | "Zero interest" means the merchant absorbs it — straight out of your margin |
| Apple Pay / Google Pay | Essentially a credit card; rates close to regular card payments | Same as credit cards | Low cost, clear conversion lift — worth enabling |
| Convenience-store payment code | Commonly a flat fee per transaction (around NT$25–30) | Several days after payment | High non-payment rate — you need payment reminders |
| Convenience-store pickup with payment | Shipping fee + collection fee | Longer reconciliation cycle | Refused pickups are the biggest hidden cost |
| ATM virtual account | Flat fee or low percentage | Fast payment confirmation | Exception handling for wrong amounts and expired transfers |
| Mobile wallets (LINE Pay, etc.) | Roughly 2.5%–3.2% | Varies by provider's payout cycle | Each has its own reconciliation file — more accounting work |
Three things that matter more than the rate
- Read fees together with conversion rates. LINE Pay charges a bit more than credit cards, but if it gets a segment of customers who can't be bothered typing in card numbers to actually check out, the extra fee is cheap customer acquisition. When we enabled Apple Pay, what we noticed most wasn't the cost — it was how much smoother mobile checkout became. The right question about payment methods isn't "which is cheapest" but "which one is my customer base missing."
- Settlement days are an invisible cost of capital. Say you do NT$1 million a month in revenue with an average ten-day settlement delay — that's hundreds of thousands permanently parked at your payment provider. When you're stocking up for peak season, the payout cycle will choke you harder than the fee rate ever will. When negotiating contracts, the payout cycle is negotiable — don't fixate only on the rate.
- The real cost of cash on delivery is refusal. On paper, COD fees look trivial. But one refused order costs you outbound shipping, return shipping, packaging, and labor — and the product may lose value against its expiry date. Ways to control refusals include SMS confirmation before shipping and disabling COD for high-risk accounts.
Practical advice: offer the full menu, but with priorities
Taiwanese consumers' payment habits are astonishingly fragmented — every payment method you don't offer shuts a group of people out. Our recommended order: credit cards (including Apple Pay) are non-negotiable; convenience-store options depend on your customer age mix — enable them early if young and student customers are a big share; installments depend on average order value — the effect only shows once orders pass a few thousand NT dollars, and we've written about that trade-off in whether to offer installment payments. As for the pitfalls of actual integration — callback verification, amount matching, timeout handling — we covered them in ten pitfalls of ECPay integration; everything we've stepped in is in there.
Payment fees aren't a cost — they're a toll. What's truly expensive isn't the percentage you pay, but the orders that never happen because you were missing one payment method.
One last reminder: the numbers in this article are common market ranges. Each provider's plans, your industry, and your scale all affect your actual terms — get official quotes before signing, and remember: rates really are negotiable.
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