diff --git a/website/src/lib/components/self/SendMoneyModal.svelte b/website/src/lib/components/self/SendMoneyModal.svelte
index 2afc335..26f0b4a 100644
--- a/website/src/lib/components/self/SendMoneyModal.svelte
+++ b/website/src/lib/components/self/SendMoneyModal.svelte
@@ -35,6 +35,12 @@
 		coinHoldings.find((holding) => holding.symbol === selectedCoinSymbol)
 	);
 
+	let estimatedValue = $derived(
+		transferType === 'COIN' && selectedCoinHolding && numericAmount > 0
+			? numericAmount * selectedCoinHolding.currentPrice
+			: 0
+	);
+
 	let maxAmount = $derived(
 		transferType === 'CASH' ? userBalance : selectedCoinHolding ? selectedCoinHolding.quantity : 0
 	);
@@ -47,10 +53,20 @@
 				: false
 	);
 
+	let isWithinCashLimit = $derived(
+		transferType === 'CASH' ? numericAmount >= 10 : true
+	);
+
+	let isWithinCoinValueLimit = $derived(
+		transferType === 'COIN' ? estimatedValue >= 10 : true
+	);
+
 	let canSend = $derived(
 		hasValidAmount &&
 			hasValidRecipient &&
 			hasEnoughFunds &&
+			isWithinCashLimit &&
+			isWithinCoinValueLimit &&
 			!loading &&
 			(transferType === 'CASH' || selectedCoinSymbol.length > 0)
 	);
@@ -65,7 +81,11 @@
 	}
 
 	function setMaxAmount() {
-		amount = maxAmount.toString();
+		if (transferType === 'CASH') {
+			amount = Math.max(maxAmount, 10).toString();
+		} else {
+			amount = maxAmount.toString();
+		}
 	}
 
 	function handleTypeChange(value: string) {
@@ -151,12 +171,6 @@
 				})()
 	);
 
-	let estimatedValue = $derived(
-		transferType === 'COIN' && selectedCoinHolding && numericAmount > 0
-			? numericAmount * selectedCoinHolding.currentPrice
-			: 0
-	);
-
 	function handleCoinChange(value: string) {
 		selectedCoinSymbol = value;
 	}
@@ -267,15 +281,32 @@
 						</p>
 					{/if}
 				</div>
+				{#if transferType === 'CASH'}
+					<p class="text-muted-foreground text-xs">
+						Minimum: $10.00 per transfer
+					</p>
+				{:else if transferType === 'COIN'}
+					<p class="text-muted-foreground text-xs">
+						Minimum estimated value: $10.00 per transfer
+					</p>
+				{/if}
 			</div>
 
 			{#if !hasEnoughFunds && hasValidAmount}
 				<Badge variant="destructive" class="text-xs">
 					Insufficient {transferType === 'CASH' ? 'funds' : 'coins'}
 				</Badge>
+			{:else if !isWithinCashLimit && hasValidAmount}
+				<Badge variant="destructive" class="text-xs">
+					Cash transfers require a minimum of $10.00
+				</Badge>
+			{:else if !isWithinCoinValueLimit && hasValidAmount}
+				<Badge variant="destructive" class="text-xs">
+					Coin transfers require a minimum estimated value of $10.00
+				</Badge>
 			{/if}
 
-			{#if hasValidAmount && hasEnoughFunds && hasValidRecipient}
+			{#if hasValidAmount && hasEnoughFunds && hasValidRecipient && isWithinCashLimit && isWithinCoinValueLimit}
 				<div class="bg-muted/50 rounded-lg p-3">
 					<div class="flex items-center justify-between">
 						<span class="text-sm font-medium">You're sending:</span>
diff --git a/website/src/routes/api/transfer/+server.ts b/website/src/routes/api/transfer/+server.ts
index dfe77d8..e9ce233 100644
--- a/website/src/routes/api/transfer/+server.ts
+++ b/website/src/routes/api/transfer/+server.ts
@@ -30,6 +30,10 @@ export const POST: RequestHandler = async ({ request }) => {
             throw error(400, 'Transfer amount too large');
         }
 
+        if (type === 'CASH' && amount < 10) {
+            throw error(400, 'Cash transfers require a minimum of $10.00');
+        }
+
         if (type === 'COIN' && !coinSymbol) {
             throw error(400, 'Coin symbol required for coin transfers');
         }
@@ -140,6 +144,13 @@ export const POST: RequestHandler = async ({ request }) => {
                     throw error(404, 'Coin not found');
                 }
 
+                const coinPrice = Number(coinData.currentPrice) || 0;
+                const estimatedValue = amount * coinPrice;
+
+                if (estimatedValue < 10) {
+                    throw error(400, `Coin transfers require a minimum estimated value of $10.00. ${amount.toFixed(6)} ${coinData.symbol} is worth approximately $${estimatedValue.toFixed(2)}`);
+                }
+
                 const [senderHolding] = await tx
                     .select({
                         quantity: userPortfolio.quantity
@@ -167,7 +178,6 @@ export const POST: RequestHandler = async ({ request }) => {
                     .for('update')
                     .limit(1);
 
-                const coinPrice = Number(coinData.currentPrice) || 0;
                 const totalValue = amount * coinPrice;
 
                 const newSenderQuantity = Number(senderHolding.quantity) - amount;
diff --git a/website/src/routes/hopium/+page.svelte b/website/src/routes/hopium/+page.svelte
index 38da00b..9d0bbff 100644
--- a/website/src/routes/hopium/+page.svelte
+++ b/website/src/routes/hopium/+page.svelte
@@ -108,7 +108,7 @@
 			return;
 		}
 		if (userBalance <= 100_000) {
-			toast.error('You need at least $100,000 in your portfolio to create a question.');
+			toast.error('You need at least $100,000 in your portfolio (cash) to create a question.');
 			return;
 		}
 		showCreateDialog = true;