FX and Currency Conversion for Merchants Collecting in South Asia
By PayEurasia Team · 2 October 2026 · 6 min read
Last updated 2 October 2026
Spreads, rate timing, conversion points and hedging basics for merchants collecting in local South Asian currencies and settling in USD or EUR.
A merchant collecting in taka, rupees and Nepalese rupees and settling in dollars pays for conversion whether or not it appears as a line item. Understanding where the cost sits — and when the rate is struck — is usually worth more than negotiating the headline processing fee.
What this guide covers
- Where conversion actually happens
- How spreads are quoted
- Rate timing and who carries the risk
- Reducing the number of conversions
- Reporting conversion properly
- Hedging: when it is worth it
- Local regulation and documentation
- What to compare between providers
Where conversion actually happens
There are up to three conversion points: at the payer's instrument, at the provider when local balances are converted for settlement, and at your own bank when the settlement currency differs from your accounting currency. Each can carry a spread.
Map your own flow before negotiating anything. Merchants frequently discover they are paying a conversion twice — once by the provider and once by their bank — when settling in a currency their account does not hold natively.
How spreads are quoted
Providers quote against a reference mid-market rate with a margin, expressed either as a percentage or baked into the rate you are shown. A rate with no stated reference and no stated margin is not a quote, it is a number.
Ask for the reference source, the margin, the time the rate is struck and how long it holds. Two providers quoting "competitive FX" can differ by more than the entire difference in their processing fees.
Rate timing and who carries the risk
The rate can be struck at transaction time, at settlement batch time, or at conversion time. If it is struck at settlement, currency movement between collection and settlement is your risk, not the provider's — which matters most in exactly the volatile periods when you notice it.
For merchants pricing in a hard currency and collecting in local currency, the gap between display price and realised revenue is this timing. Measure realised revenue per market monthly rather than assuming the list price.
Reducing the number of conversions
The cheapest conversion is the one that does not happen. If you pay out locally in a market where you also collect, keep balance in that currency to fund the payouts and convert only the surplus.
Consolidate conversion at one point rather than spreading it across every settlement. Fewer, larger conversions typically achieve better effective rates and are far easier to audit.
Reporting conversion properly
Book the local-currency amount, the rate applied and the settled amount as three separate fields on every settlement line. Recording only the settled figure makes it impossible to tell later whether a revenue change came from volume, pricing or the rate.
Track a monthly effective rate per market against the mid-market average. A widening gap is a commercial conversation to have with the provider, supported by numbers.
Hedging: when it is worth it
Most merchants under a certain scale should not hedge formally; the operational cost outweighs the variance. The practical alternatives are shortening the exposure window by settling more frequently, and holding working balances in the currency of your obligations.
Where exposure is large and predictable — committed local payroll or supplier costs against foreign revenue — forward contracts through your bank are the conventional tool, and the conversation starts with a documented exposure profile.
Local regulation and documentation
Cross-border flows in these markets carry documentation requirements, and funds can be delayed when the purpose or supporting paperwork is unclear. Keep invoices, contracts and the commercial rationale available for each settlement stream.
Structuring flows to look smaller or more domestic than they are is the fastest route to a frozen account. Transparency with the provider about what the money is for is the control that keeps settlement predictable.
What to compare between providers
Compare total cost to treasury: processing fee, conversion margin, settlement frequency, reserve withholding and the rate-timing rule combined. A provider with a lower headline fee and a wider spread is usually more expensive at any meaningful volume.
Run the comparison on a month of your real transaction mix rather than on a sample ticket. Method mix moves the answer more than most merchants expect.
Frequently asked questions
Can I settle directly in BDT or INR?
Local settlement is possible with the right structure and is often preferable if you have local costs; repatriation is then a separate, documented step.
Is mid-market rate available to merchants?
No provider settles at pure mid-market. The question is the size of the declared margin, not whether one exists.
When is the rate fixed?
It depends on the contract — transaction time, batch time or conversion time. Get it in writing, because it determines who carries the movement.
Does FX cost more than processing fees?
At scale it often does, particularly for merchants collecting in four currencies and settling in one.
How do I audit conversion?
Store local amount, rate and settled amount per line, and compare the monthly effective rate against a public mid-market average.
Where PayEurasia fits
PayEurasia runs local collections and payouts across Bangladesh, India, Pakistan and Nepal behind a single API, one reconciliation model and one settlement relationship. Provider redundancy sits behind that API, so an acquirer outage degrades approval rates instead of stopping money movement.
If you are scoping an integration, the API overview explains the object model and the API documentation covers authentication, webhooks and error handling. Merchant onboarding lists the documents needed before a live account is issued, and Compliance sets out the KYC and AML framework applied to every merchant.
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