Sri Lanka Payment Gateway Fee Calculator
Enter a sale amount and monthly volume to see exactly what you keep after PayHere, WebXPay and Onepay fees — the per-transaction charge, your net payout, and which plan is cheapest overall. No signup, no ads, sources cited below.
How it works
Every online payment gateway keeps a percentage of each sale as a processing fee, and some charge a fixed monthly subscription on top. This calculator models both parts using the providers' published rate cards, so you can see your true take-home before you pick a gateway or price a product.
The core arithmetic is deliberately simple and deterministic:
- Effective rate.Start from the plan's base rate for a local card, then apply the method add-on. For PayHere: a premium card (Amex/Diners/Discover) adds 0.5%, and a foreign-currency card adds 1.0%. HelaPay, PayHere's local wallet, replaces the plan rate with a flat 1.99%.
- Per-transaction fee.
fee = amount × effective rate, and your net payout is amount − fee. - Estimated monthly cost.
cost = volume × rate + monthly fee. The percentage part equals volume × rate no matter how many transactions make it up. WebXPay X-Wallet's Rs 1,000/year annual fee is spread as Rs 83/month. - Break-even between plans. To find where a cheaper-% paid plan overtakes a free plan, solve V × r₁ + M₁ = V × r₂ + M₂ for the volume:
V* = (M₁ − M₂) / (r₂ − r₁). Above V* the lower-percentage plan wins; below it, the free plan does.
PayHere is the primary, canonical source here: it publishes a fixed public fee schedule, so its figures are exact — Lite 3.30% (no monthly fee), Plus 2.99% (Rs 3,990/month) and Premium 2.69% (Rs 9,990/month), with HelaPay at 1.99% on every plan. WebXPay and Onepay do not publish a full public rate card and negotiate by merchant, so their figures are shown as indicative and flagged in the tool — confirm them with the provider. Government levies such as VAT and SSCL that a provider may add on top of the processing fee are out of scope, because each invoices them differently and an exact combined figure is not publicly deterministic. Rates were last verified on 2026-07-10.
Worked examples
Frequently asked questions
Sources & references
- PayHere — official fee schedule (Lite / Plus / Premium, HelaPay, add-ons)
- PayHere Knowledge Base — payment limits & fees
- WebXPay — official site (X-Wallet / X-Gateway, T+1 settlement)
- Onepay — official site (card MDR, LankaQR, setup & monthly)
PayHere figures are canonical and taken from the provider's published schedule. WebXPay and Onepay do not publish a fixed public rate card, so their figures are indicative and cross-referenced with 2026 provider-comparison guides; confirm the exact rate with each provider. Rates were last verified on 2026-07-10 and are reviewed whenever a provider updates its published pricing.
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Comments & feedback
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