diff --git a/static/js/index.js b/static/js/index.js
index 4daad64..d954432 100644
--- a/static/js/index.js
+++ b/static/js/index.js
@@ -1419,7 +1419,9 @@ window.app = Vue.createApp({
     },
     getTotalAmount(entry) {
       if (!entry.lines || entry.lines.length === 0) return 0
-      return entry.lines.reduce((sum, line) => sum + line.debit + line.credit, 0) / 2
+      // Beancount-style: use absolute value of amounts
+      // All lines have amounts (positive or negative), we want the transaction size
+      return entry.lines.reduce((sum, line) => sum + Math.abs(line.amount || 0), 0) / 2
     },
     getEntryFiatAmount(entry) {
       // Extract fiat amount from metadata if available
@@ -1434,12 +1436,13 @@ window.app = Vue.createApp({
     },
     isReceivable(entry) {
       // Check if this is a receivable entry (user owes castle)
-      // Receivables have a debit to an "Accounts Receivable" account with the user's ID
+      // Receivables have a positive amount (debit) to an "Accounts Receivable" account
       if (!entry.lines || entry.lines.length === 0) return false
 
       for (const line of entry.lines) {
-        // Look for a line with positive debit on an accounts receivable account
-        if (line.debit > 0) {
+        // Look for a line with positive amount on an accounts receivable account
+        // Beancount-style: positive amount = debit (asset increase)
+        if (line.amount > 0) {
           // Check if the account is associated with this user's receivables
           const account = this.accounts.find(a => a.id === line.account_id)
           if (account && account.name && account.name.includes('Assets:Receivable') && account.account_type === 'asset') {
@@ -1451,12 +1454,13 @@ window.app = Vue.createApp({
     },
     isPayable(entry) {
       // Check if this is a payable entry (castle owes user)
-      // Payables have a credit to an "Accounts Payable" account with the user's ID
+      // Payables have a negative amount (credit) to an "Accounts Payable" account
       if (!entry.lines || entry.lines.length === 0) return false
 
       for (const line of entry.lines) {
-        // Look for a line with positive credit on an accounts payable account
-        if (line.credit > 0) {
+        // Look for a line with negative amount on an accounts payable account
+        // Beancount-style: negative amount = credit (liability increase)
+        if (line.amount < 0) {
           // Check if the account is associated with this user's payables
           const account = this.accounts.find(a => a.id === line.account_id)
           if (account && account.name && account.name.includes('Liabilities:Payable') && account.account_type === 'liability') {