diff --git a/site/plugins/buy/src/Passthrough.php b/site/plugins/buy/src/Passthrough.php
index 2884098db..dba9d8b64 100644
--- a/site/plugins/buy/src/Passthrough.php
+++ b/site/plugins/buy/src/Passthrough.php
@@ -8,6 +8,7 @@ class Passthrough
 {
 	public function __construct(
 		public string|null $license = null,
+		public string $discounts = '',
 		public bool $gratitude = false,
 		public int $multiplier = 1,
 		public string|null $partner = null,
@@ -54,6 +55,7 @@ public function toJson(): string
 	{
 		return json_encode([
 			'license'          => $this->license,
+			'discounts'        => $this->discounts,
 			'gratitude'        => $this->gratitude,
 			'multiplier'       => $this->multiplier,
 			'partner'          => $this->partner,
diff --git a/site/plugins/buy/src/Price.php b/site/plugins/buy/src/Price.php
index 67721e348..e813f5e9b 100644
--- a/site/plugins/buy/src/Price.php
+++ b/site/plugins/buy/src/Price.php
@@ -73,6 +73,26 @@ public function customerDonation(): int
 		return $this->convert(option('buy.donation.customerAmount'));
 	}
 
+	/**
+	 * Returns a summary of all applied discounts
+	 */
+	public function discounts(): string
+	{
+		$discounts = [];
+
+		if ($this->rateAdjusted !== $this->rate) {
+			$pppPercentage = number_format(100 * (1 - $this->rateAdjusted / $this->rate), 2, '.');
+			$discounts[]   = 'PPP (' . $pppPercentage . '%)';
+		}
+
+		$sale = new Sale();
+		if ($sale->isActive()) {
+			$discounts[] = 'Sale (' . $sale->discount() . '%)';
+		}
+
+		return implode(', ', $discounts);
+	}
+
 	/**
 	 * Gets the team donation amount
 	 * per license in the customer currency
diff --git a/site/routes/buy.php b/site/routes/buy.php
index 7fcdbed06..306c29fb8 100644
--- a/site/routes/buy.php
+++ b/site/routes/buy.php
@@ -68,6 +68,7 @@
 				$price       = $product->price();
 				$message     = $product->revenueLimit();
 				$passthrough = new Passthrough(
+					discounts:    $price->discounts(),
 					donationOrg:  option('buy.donation.charity'),
 					teamDonation: option('buy.donation.teamAmount') * $quantity
 				);
@@ -122,6 +123,7 @@
 				$product     = Product::from($productId);
 				$price       = $product->price();
 				$passthrough = new Passthrough(
+					discounts:    $price->discounts(),
 					donationOrg:  option('buy.donation.charity'),
 					teamDonation: option('buy.donation.teamAmount')
 				);
@@ -152,6 +154,7 @@
 				$product     = Product::from($productId);
 				$price       = $product->price();
 				$passthrough = new Passthrough(
+					discounts:    $price->discounts(),
 					donationOrg:  option('buy.donation.charity'),
 					teamDonation: option('buy.donation.teamAmount') * $quantity
 				);
@@ -179,6 +182,7 @@
 				$product     = Product::from($productId);
 				$price       = $product->price();
 				$passthrough = new Passthrough(
+					discounts:    $price->discounts(),
 					donationOrg:  option('buy.donation.charity'),
 					teamDonation: option('buy.donation.teamAmount') * $quantity
 				);