diff --git a/src/features/budget-tracker/components/budget-tracker-list.tsx b/src/features/budget-tracker/components/budget-tracker-list.tsx
index a8ed137..df7ed99 100644
--- a/src/features/budget-tracker/components/budget-tracker-list.tsx
+++ b/src/features/budget-tracker/components/budget-tracker-list.tsx
@@ -44,17 +44,56 @@ export function BudgetTrackerList() {
     name: string
   } | null>(null)
 
+  // Selected items for filtering summary calculations
+  const [selectedItemIds, setSelectedItemIds] = useState<Set<string>>(new Set())
+
   if (isLoading) {
     return <div className="p-4">Loading budget tracker...</div>
   }
 
   const currentBalance = balance ? parseFloat(balance.amount) : 0
 
-  // Calculate total amount and total paid based on stored values
-  const totalAmount = items.reduce((sum, item) => sum + parseFloat(item.amount), 0)
-  const totalPaid = items.reduce((sum, item) => sum + parseFloat(item.amountPaid), 0)
+  // Filter items based on selection (if any items are selected, only show those)
+  const filteredItems = selectedItemIds.size > 0 ? items.filter((item) => selectedItemIds.has(item.id)) : items
+
+  // Calculate total amount and total paid using effective amounts (includes sub-items)
+  const totalAmount = filteredItems.reduce((sum, item) => {
+    const itemWithEffect = item as typeof item & { _effectiveAmount?: number }
+    return sum + (itemWithEffect._effectiveAmount || parseFloat(item.amount))
+  }, 0)
+
+  const totalPaid = filteredItems.reduce((sum, item) => {
+    const itemWithSubs = item as typeof item & { subItems?: Array<{ amountPaid: string }> }
+    const subItemsPaidTotal = (itemWithSubs.subItems || []).reduce(
+      (subSum, subItem) => subSum + parseFloat(subItem.amountPaid),
+      0
+    )
+    return sum + parseFloat(item.amountPaid) + subItemsPaidTotal
+  }, 0)
+
   const remainingToPay = totalAmount - totalPaid
 
+  // Handlers for item selection
+  const handleToggleSelectItem = (itemId: string) => {
+    setSelectedItemIds((prev) => {
+      const newSet = new Set(prev)
+      if (newSet.has(itemId)) {
+        newSet.delete(itemId)
+      } else {
+        newSet.add(itemId)
+      }
+      return newSet
+    })
+  }
+
+  const handleSelectAll = () => {
+    if (selectedItemIds.size === items.length) {
+      setSelectedItemIds(new Set())
+    } else {
+      setSelectedItemIds(new Set(items.map((item) => item.id)))
+    }
+  }
+
   const handleEditItem = (item: BudgetItem) => {
     setEditingItem(item)
   }
@@ -120,7 +159,16 @@ export function BudgetTrackerList() {
 
       {/* Summary Section */}
       <div>
-        <h2 className="mb-4 text-xl font-semibold">Summary</h2>
+        <div className="mb-4 flex items-center justify-between">
+          <h2 className="text-xl font-semibold">
+            Summary {selectedItemIds.size > 0 && `(${selectedItemIds.size} selected)`}
+          </h2>
+          {items.length > 0 && (
+            <Button variant="outline" onClick={handleSelectAll}>
+              {selectedItemIds.size === items.length ? 'Deselect All' : 'Select All'}
+            </Button>
+          )}
+        </div>
         <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
           <div className="grid gap-1 rounded-md border p-4">
             <p className="text-muted-foreground text-sm">Total Budget</p>
@@ -150,6 +198,8 @@ export function BudgetTrackerList() {
         <BudgetTrackerTable
           data={items}
           balance={currentBalance}
+          selectedItemIds={selectedItemIds}
+          onToggleSelectItem={handleToggleSelectItem}
           onEditItem={handleEditItem}
           onDeleteItem={handleDeleteItem}
           onAddSubItem={handleAddSubItem}
diff --git a/src/features/budget-tracker/components/budget-tracker-table.tsx b/src/features/budget-tracker/components/budget-tracker-table.tsx
index 355da94..3eae2d2 100644
--- a/src/features/budget-tracker/components/budget-tracker-table.tsx
+++ b/src/features/budget-tracker/components/budget-tracker-table.tsx
@@ -12,6 +12,8 @@ import { useBudgetSubItems } from '@/hooks/use-budget'
 interface BudgetTrackerTableProps {
   data: BudgetItem[]
   balance: number
+  selectedItemIds: Set<string>
+  onToggleSelectItem: (itemId: string) => void
   onEditItem: (item: BudgetItem) => void
   onDeleteItem: (item: BudgetItem) => void
   onAddSubItem: (itemId: string) => void
@@ -23,6 +25,8 @@ interface BudgetTrackerTableProps {
 export function BudgetTrackerTable({
   data,
   balance,
+  selectedItemIds,
+  onToggleSelectItem,
   onEditItem,
   onDeleteItem,
   onAddSubItem,
@@ -69,6 +73,7 @@ export function BudgetTrackerTable({
       <Table>
         <TableHeader>
           <TableRow>
+            <TableHead className="w-[40px]"></TableHead>
             <TableHead className="w-[40px]"></TableHead>
             <TableHead>Item</TableHead>
             <TableHead>Amount</TableHead>
@@ -81,7 +86,7 @@ export function BudgetTrackerTable({
         <TableBody>
           {sortedData.length === 0 ? (
             <TableRow>
-              <TableCell colSpan={7} className="h-24 text-center">
+              <TableCell colSpan={8} className="h-24 text-center">
                 No budget items yet.
               </TableCell>
             </TableRow>
@@ -94,11 +99,8 @@ export function BudgetTrackerTable({
   )
 
   function BudgetItemRow({ item }: { item: BudgetItem }) {
-    // Use pre-loaded sub-items if available (from API), otherwise fetch them
-    const itemWithSubItems = item as BudgetItem & { subItems?: BudgetSubItem[] }
-    const preLoadedSubItems = itemWithSubItems.subItems
-    const { data: fetchedSubItems = [] } = useBudgetSubItems(item.id)
-    const subItems = preLoadedSubItems || fetchedSubItems
+    // Always use the hook data to ensure real-time updates
+    const { data: subItems = [] } = useBudgetSubItems(item.id)
     const hasSubItems = subItems.length > 0
     const isExpanded = expandedItems.has(item.id)
 
@@ -126,9 +128,18 @@ export function BudgetTrackerTable({
       return a.paid ? 1 : -1
     })
 
+    const isSelected = selectedItemIds.has(item.id)
+
     return (
       <>
         <TableRow className={cn({ 'opacity-50': item.paid })}>
+          <TableCell>
+            <Checkbox
+              checked={isSelected}
+              onCheckedChange={() => onToggleSelectItem(item.id)}
+              aria-label={`Select ${item.name}`}
+            />
+          </TableCell>
           <TableCell>
             {hasSubItems && (
               <Button
@@ -199,6 +210,7 @@ export function BudgetTrackerTable({
             const subItemAffordable = isAffordable(subItem.amount, subItem.amountPaid)
             return (
               <TableRow key={subItem.id} className={cn('bg-muted/30', { 'opacity-50': subItem.paid })}>
+                <TableCell></TableCell>
                 <TableCell></TableCell>
                 <TableCell className="pl-8">
                   <span className="text-muted-foreground">↳</span> {subItem.name}