{"id":78973,"date":"2026-04-03T00:14:37","date_gmt":"2026-04-03T00:14:37","guid":{"rendered":"https:\/\/gtechbooster.com\/?p=78973"},"modified":"2026-04-03T00:14:59","modified_gmt":"2026-04-03T00:14:59","slug":"flutterwave-update-to-transfers-rates-api-goes-into-effect-on-8th-april","status":"publish","type":"post","link":"https:\/\/gtechbooster.com\/flutterwave-update-to-transfers-rates-api-goes-into-effect-on-8th-april\/","title":{"rendered":"Flutterwave update to Transfers Rates API goes into effect on 8th April"},"content":{"rendered":"\n

If you’ve built a payment integration on top of Flutterwave’s Transfer Rates API, there’s a quiet but potentially breaking change coming your way in less than a week. On Wednesday, 8th<\/sup> April, 2026<\/strong>, Flutterwave is updating the way the rate<\/code> field expresses exchange rates in the API response \u2014 and depending on how your code uses that value, it could silently produce wrong transaction amounts if you don’t act.<\/p>\n\n\n\n

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Here’s a breakdown of what’s changing, why it matters, and what you should actually do about it.<\/p>\n\n\n\n

The rate field is getting inverted<\/h2>\n\n\n\n

Right now, when you call GET \/v3\/transfers\/rates<\/code>, the rate<\/code> field in the response tells you how much source<\/em> currency is required to deliver one unit of the destination<\/em> currency. So if you’re sending NGN to someone who receives USD, you’d get back something like 1417.80<\/code> \u2014 meaning it costs 1,417.80 NGN to produce 1 USD.<\/p>\n\n\n\n

After April 8, the same field flips: it will tell you how much destination<\/em> currency you receive for one unit of source<\/em> currency. For that same NGN \u2192 USD pair, you’d now see 0.0007<\/code> \u2014 meaning 1 NGN gets you 0.0007 USD.<\/p>\n\n\n\n

“The underlying exchange rate is the same. What’s changing is the direction it’s expressed in \u2014 the same number, seen from the other side of the transaction.”<\/p>\n\n\n\n

This is a directional convention flip, not a data error or a rate change. Think of it like the difference between “it costs \u00a31.27 to buy a dollar” vs. “a dollar buys you \u00a30.79” \u2014 both describe the same rate, just from opposite perspectives.<\/p>\n\n\n\n

What the before and after actually looks like<\/h2>\n\n\n\n
Currency Pair<\/th>Old rate value<\/th>New rate value<\/th><\/tr><\/thead>
NGN \u2192 USD<\/td>1417.80 1,417.80 NGN delivers 1 USD<\/td>0.0007 1 NGN delivers 0.0007 USD<\/td><\/tr>
USD \u2192 NGN<\/td>0.0007 0.0007 USD delivers 1 NGN<\/td>1417.80 1 USD delivers 1,417.80 NGN<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Notice that the two rows are essentially swapping values. That’s a useful intuition check \u2014 after the change, you’ll see the large number on the USD \u2192 NGN row and the small decimal on NGN \u2192 USD, which is the more familiar mental model for most developers.<\/p>\n\n\n\n

Should you be worried?<\/h2>\n\n\n\n

That depends entirely on how your code uses the rate<\/code> field. There are really two scenarios:<\/p>\n\n\n\n

Scenario A \u2014 You’re using source.amount<\/code> and destination.amount<\/code> directly. <\/h3>\n\n\n\n

If this is you, stop reading and go back to whatever you were doing. Those fields return the pre-calculated exact amounts for your specific transaction and are completely unaffected by this change. Flutterwave isn’t touching them.<\/p>\n\n\n\n

Scenario B \u2014 You’re pulling the rate<\/code> value and doing your own arithmetic with it. <\/h3>\n\n\n\n

This is where you need to pay attention. Under the old format, you’d calculate a destination amount by dividing<\/em> the source amount by the rate. Under the new format, you’d multiply<\/em> instead. If your code doesn’t change, it will silently produce incorrect amounts after April 8.<\/p>\n\n\n\n

If you divide by the rate field, you need to act before April 8<\/h3>\n\n\n\n

Update your calculation from amount \/ rate<\/code> to amount \u00d7 rate<\/code>, or better yet, migrate to using source.amount<\/code> and destination.amount<\/code> directly. The latter is the safer long-term approach.<\/p>

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What the code change looks like<\/h2>\n\n\n\n

If you’re in Scenario B and need to patch your integration quickly, the fix is a one-line change:<\/p>\n\n\n\n

Before \u2014 old format (dividing)JavaScript<\/strong><\/p>\n\n\n\n

\/\/ rate = 1417.80 (NGN \u2192 USD, old convention)\nconst destinationAmount = sourceAmount \/ rate;\n\/\/ 100,000 \/ 1417.80 \u2192 ~70.54 USD \u2713 (old)<\/code><\/pre>\n\n\n\n
After \u2014 new format (multiplying)JavaScript<\/strong><\/p>\n\n\n\n
\/\/ rate = 0.0007 (NGN \u2192 USD, new convention)\nconst destinationAmount = sourceAmount * rate;\n\/\/ 100,000 \u00d7 0.0007 \u2192 ~70 USD \u2713 (new)<\/code><\/pre>\n\n\n\n
The better fix: stop using the rate field for calculations<\/h3>\n\n\n\n
Flutterwave isn’t just asking you to flip a division into a multiplication \u2014 they’re actually recommending you move away from the rate<\/code> field entirely for any amount calculation. And that’s good advice.<\/p>\n\n\n\n
The rate<\/code> field is inherently a derived, display-oriented value. It can change format, convention, or precision in future updates (as it just did). The source.amount<\/code> and destination.amount<\/code> fields, on the other hand, are the exact calculated values for your specific transaction \u2014 no arithmetic needed on your end, and no dependency on how the rate happens to be expressed at any given time.<\/p>\n\n\n\n
Recommended \u2014 use source\/destination amounts directlyJavaScript<\/p>\n\n\n\n
const res = await fetch(\n  'https:\/\/api.flutterwave.com\/v3\/transfers\/rates' +\n  '?amount=1000&source_currency=NGN&destination_currency=USD',\n  { headers: { Authorization: `Bearer ${SECRET_KEY}` } }\n);\n\nconst { data } = await res.json();\n\n\/\/ Use these \u2014 no manual calculation needed\ndata.source.amount       \/\/ exact NGN to debit\ndata.destination.amount  \/\/ exact USD received\n\n\/\/ Avoid depending on this for arithmetic\n\/\/ data.rate  \u2190 display only<\/code><\/pre>\n\n\n\n
No changes needed if you already use source.amount \/ destination.amount<\/h3>\n\n\n\n
These fields are stable, exact, and unaffected by this update. If your integration is already built around them, you’re set.<\/p>\n\n\n\n
Why is Flutterwave making this change?<\/h2>\n\n\n\n
The new convention \u2014 destination units per source unit \u2014 is the more widely-used standard across financial data APIs and FX tooling. It’s the format you’ll recognise from most forex feeds, banking APIs, and currency widgets: “1 USD = 1,417.80 NGN” rather than “1,417.80 NGN buys 1 USD.” By aligning to this standard, Flutterwave makes the rate<\/code> field more intuitive and consistent with how developers typically think about exchange rates when working across multiple providers.<\/p>\n\n\n\n
Test against the sandbox before April 8<\/strong><\/p>\n\n\n\n
You can validate your updated logic today using the sandbox base URL: https:\/\/developersandbox-api.flutterwave.com\/transfers\/rates<\/code>. The new rate format is already live there.<\/p>\n\n\n\n
The rate<\/code> field in the Transfer Rates API response is inverting on April 8. If you do custom math with it, flip your division to multiplication \u2014 or, better, migrate to using source.amount<\/code> and destination.amount<\/code> instead. If you already use those fields, nothing changes for you. Either way, test in sandbox before the 8th if you can.<\/p>\n\n\n\n
More Information \u2139<\/h6>\n\n\n\n