diff --git a/lib/format-stripe-price.ts b/lib/format-stripe-price.ts
index 4d74363..4ff4e60 100644
--- a/lib/format-stripe-price.ts
+++ b/lib/format-stripe-price.ts
@@ -17,10 +17,15 @@ export function formatStripePrice(
   const decimals = zeroDecimalCurrencies.has(normalized) ? 0 : 2;
   const major = unitAmount / 10 ** decimals;
 
+  // Drop the fraction digits for whole amounts (9.00 -> 9), keep them when
+  // there are real cents (9.99 stays 9.99).
+  const isWholeAmount = unitAmount % 10 ** decimals === 0;
+
   try {
     return new Intl.NumberFormat(undefined, {
       style: "currency",
       currency: normalized.toUpperCase(),
+      minimumFractionDigits: isWholeAmount ? 0 : decimals,
       maximumFractionDigits: decimals,
     }).format(major);
   } catch {