diff --git a/app/transactions/page.tsx b/app/transactions/page.tsx
index 6d9e9c9..527a00f 100644
--- a/app/transactions/page.tsx
+++ b/app/transactions/page.tsx
@@ -36,7 +36,7 @@ export default function TransactionsPage() {
     }
   }, [searchParams]);
 
-  const [selectedCategory, setSelectedCategory] = useState<string>("all");
+  const [selectedCategories, setSelectedCategories] = useState<string[]>(["all"]);
   const [showReconciled, setShowReconciled] = useState<string>("all");
   const [sortField, setSortField] = useState<SortField>("date");
   const [sortOrder, setSortOrder] = useState<SortOrder>("desc");
@@ -66,12 +66,12 @@ export default function TransactionsPage() {
       );
     }
 
-    if (selectedCategory !== "all") {
-      if (selectedCategory === "uncategorized") {
+    if (!selectedCategories.includes("all")) {
+      if (selectedCategories.includes("uncategorized")) {
         transactions = transactions.filter((t) => !t.categoryId);
       } else {
         transactions = transactions.filter(
-          (t) => t.categoryId === selectedCategory
+          (t) => t.categoryId && selectedCategories.includes(t.categoryId)
         );
       }
     }
@@ -104,7 +104,7 @@ export default function TransactionsPage() {
     data,
     searchQuery,
     selectedAccount,
-    selectedCategory,
+    selectedCategories,
     showReconciled,
     sortField,
     sortOrder,
@@ -378,8 +378,8 @@ export default function TransactionsPage() {
         onSearchChange={setSearchQuery}
         selectedAccount={selectedAccount}
         onAccountChange={setSelectedAccount}
-        selectedCategory={selectedCategory}
-        onCategoryChange={setSelectedCategory}
+        selectedCategories={selectedCategories}
+        onCategoriesChange={setSelectedCategories}
         showReconciled={showReconciled}
         onReconciledChange={setShowReconciled}
         accounts={data.accounts}
diff --git a/components/transactions/transaction-filters.tsx b/components/transactions/transaction-filters.tsx
index 31af09c..883a501 100644
--- a/components/transactions/transaction-filters.tsx
+++ b/components/transactions/transaction-filters.tsx
@@ -2,6 +2,7 @@
 
 import { Card, CardContent } from "@/components/ui/card";
 import { Input } from "@/components/ui/input";
+import { Badge } from "@/components/ui/badge";
 import {
   Select,
   SelectContent,
@@ -10,7 +11,8 @@ import {
   SelectValue,
 } from "@/components/ui/select";
 import { CategoryFilterCombobox } from "@/components/ui/category-filter-combobox";
-import { Search } from "lucide-react";
+import { CategoryIcon } from "@/components/ui/category-icon";
+import { Search, X, Filter } from "lucide-react";
 import type { Account, Category } from "@/lib/types";
 
 interface TransactionFiltersProps {
@@ -18,8 +20,8 @@ interface TransactionFiltersProps {
   onSearchChange: (query: string) => void;
   selectedAccount: string;
   onAccountChange: (account: string) => void;
-  selectedCategory: string;
-  onCategoryChange: (category: string) => void;
+  selectedCategories: string[];
+  onCategoriesChange: (categories: string[]) => void;
   showReconciled: string;
   onReconciledChange: (value: string) => void;
   accounts: Account[];
@@ -31,8 +33,8 @@ export function TransactionFilters({
   onSearchChange,
   selectedAccount,
   onAccountChange,
-  selectedCategory,
-  onCategoryChange,
+  selectedCategories,
+  onCategoriesChange,
   showReconciled,
   onReconciledChange,
   accounts,
@@ -70,9 +72,9 @@ export function TransactionFilters({
 
           <CategoryFilterCombobox
             categories={categories}
-            value={selectedCategory}
-            onChange={onCategoryChange}
-            className="w-[200px]"
+            value={selectedCategories}
+            onChange={onCategoriesChange}
+            className="w-[220px]"
           />
 
           <Select value={showReconciled} onValueChange={onReconciledChange}>
@@ -86,8 +88,141 @@ export function TransactionFilters({
             </SelectContent>
           </Select>
         </div>
+
+        <ActiveFilters
+          searchQuery={searchQuery}
+          onClearSearch={() => onSearchChange("")}
+          selectedAccount={selectedAccount}
+          onClearAccount={() => onAccountChange("all")}
+          selectedCategories={selectedCategories}
+          onRemoveCategory={(id) => {
+            const newCategories = selectedCategories.filter((c) => c !== id);
+            onCategoriesChange(newCategories.length > 0 ? newCategories : ["all"]);
+          }}
+          onClearCategories={() => onCategoriesChange(["all"])}
+          showReconciled={showReconciled}
+          onClearReconciled={() => onReconciledChange("all")}
+          accounts={accounts}
+          categories={categories}
+        />
       </CardContent>
     </Card>
   );
 }
 
+function ActiveFilters({
+  searchQuery,
+  onClearSearch,
+  selectedAccount,
+  onClearAccount,
+  selectedCategories,
+  onRemoveCategory,
+  onClearCategories,
+  showReconciled,
+  onClearReconciled,
+  accounts,
+  categories,
+}: {
+  searchQuery: string;
+  onClearSearch: () => void;
+  selectedAccount: string;
+  onClearAccount: () => void;
+  selectedCategories: string[];
+  onRemoveCategory: (id: string) => void;
+  onClearCategories: () => void;
+  showReconciled: string;
+  onClearReconciled: () => void;
+  accounts: Account[];
+  categories: Category[];
+}) {
+  const hasSearch = searchQuery.trim() !== "";
+  const hasAccount = selectedAccount !== "all";
+  const hasCategories = !selectedCategories.includes("all");
+  const hasReconciled = showReconciled !== "all";
+
+  const hasActiveFilters = hasSearch || hasAccount || hasCategories || hasReconciled;
+
+  if (!hasActiveFilters) return null;
+
+  const account = accounts.find((a) => a.id === selectedAccount);
+  const selectedCats = categories.filter((c) => selectedCategories.includes(c.id));
+  const isUncategorized = selectedCategories.includes("uncategorized");
+
+  const clearAll = () => {
+    onClearSearch();
+    onClearAccount();
+    onClearCategories();
+    onClearReconciled();
+  };
+
+  return (
+    <div className="flex items-center gap-2 mt-3 pt-3 border-t border-border flex-wrap">
+      <Filter className="h-3.5 w-3.5 text-muted-foreground" />
+      
+      {hasSearch && (
+        <Badge variant="secondary" className="gap-1 text-xs font-normal">
+          Recherche: &quot;{searchQuery}&quot;
+          <button onClick={onClearSearch} className="ml-1 hover:text-foreground">
+            <X className="h-3 w-3" />
+          </button>
+        </Badge>
+      )}
+
+      {hasAccount && account && (
+        <Badge variant="secondary" className="gap-1 text-xs font-normal">
+          Compte: {account.name}
+          <button onClick={onClearAccount} className="ml-1 hover:text-foreground">
+            <X className="h-3 w-3" />
+          </button>
+        </Badge>
+      )}
+
+      {isUncategorized && (
+        <Badge variant="secondary" className="gap-1 text-xs font-normal">
+          Non catégorisé
+          <button onClick={onClearCategories} className="ml-1 hover:text-foreground">
+            <X className="h-3 w-3" />
+          </button>
+        </Badge>
+      )}
+
+      {selectedCats.map((cat) => (
+        <Badge
+          key={cat.id}
+          variant="secondary"
+          className="gap-1 text-xs font-normal"
+          style={{
+            backgroundColor: `${cat.color}15`,
+            borderColor: `${cat.color}30`,
+          }}
+        >
+          <CategoryIcon icon={cat.icon} color={cat.color} size={12} />
+          {cat.name}
+          <button
+            onClick={() => onRemoveCategory(cat.id)}
+            className="ml-1 hover:text-foreground"
+          >
+            <X className="h-3 w-3" />
+          </button>
+        </Badge>
+      ))}
+
+      {hasReconciled && (
+        <Badge variant="secondary" className="gap-1 text-xs font-normal">
+          {showReconciled === "reconciled" ? "Pointées" : "Non pointées"}
+          <button onClick={onClearReconciled} className="ml-1 hover:text-foreground">
+            <X className="h-3 w-3" />
+          </button>
+        </Badge>
+      )}
+
+      <button
+        onClick={clearAll}
+        className="text-xs text-muted-foreground hover:text-foreground ml-auto"
+      >
+        Effacer tout
+      </button>
+    </div>
+  );
+}
+
diff --git a/components/ui/category-filter-combobox.tsx b/components/ui/category-filter-combobox.tsx
index 827e1e2..dc6f156 100644
--- a/components/ui/category-filter-combobox.tsx
+++ b/components/ui/category-filter-combobox.tsx
@@ -2,6 +2,7 @@
 
 import { useState, useMemo } from "react";
 import { Button } from "@/components/ui/button";
+import { Badge } from "@/components/ui/badge";
 import {
   Command,
   CommandEmpty,
@@ -16,14 +17,14 @@ import {
   PopoverTrigger,
 } from "@/components/ui/popover";
 import { CategoryIcon } from "@/components/ui/category-icon";
-import { ChevronsUpDown, Check, Tags, CircleSlash } from "lucide-react";
+import { ChevronsUpDown, Check, Tags, CircleSlash, X } from "lucide-react";
 import { cn } from "@/lib/utils";
 import type { Category } from "@/lib/types";
 
 interface CategoryFilterComboboxProps {
   categories: Category[];
-  value: string; // "all" | "uncategorized" | categoryId
-  onChange: (value: string) => void;
+  value: string[]; // ["all"] | ["uncategorized"] | [categoryId, categoryId, ...]
+  onChange: (value: string[]) => void;
   className?: string;
 }
 
@@ -52,17 +53,55 @@ export function CategoryFilterCombobox({
     return { parentCategories: parents, childrenByParent: children };
   }, [categories]);
 
-  const selectedCategory = categories.find((c) => c.id === value);
+  const selectedCategories = categories.filter((c) => value.includes(c.id));
+  const isAll = value.includes("all") || value.length === 0;
+  const isUncategorized = value.includes("uncategorized");
 
   const handleSelect = (newValue: string) => {
-    onChange(newValue);
-    setOpen(false);
+    // Special cases: "all" and "uncategorized" are exclusive
+    if (newValue === "all") {
+      onChange(["all"]);
+      return;
+    }
+
+    if (newValue === "uncategorized") {
+      if (isUncategorized) {
+        onChange(["all"]);
+      } else {
+        onChange(["uncategorized"]);
+      }
+      return;
+    }
+
+    // Category selection - toggle
+    let newSelection: string[];
+    
+    if (isAll || isUncategorized) {
+      // Start fresh with just this category
+      newSelection = [newValue];
+    } else if (value.includes(newValue)) {
+      // Remove category
+      newSelection = value.filter((v) => v !== newValue);
+      if (newSelection.length === 0) {
+        newSelection = ["all"];
+      }
+    } else {
+      // Add category
+      newSelection = [...value, newValue];
+    }
+
+    onChange(newSelection);
+  };
+
+  const clearSelection = () => {
+    onChange(["all"]);
   };
 
   const getDisplayValue = () => {
-    if (value === "all") return "Toutes catégories";
-    if (value === "uncategorized") return "Non catégorisé";
-    if (selectedCategory) return selectedCategory.name;
+    if (isAll) return "Toutes catégories";
+    if (isUncategorized) return "Non catégorisé";
+    if (selectedCategories.length === 1) return selectedCategories[0].name;
+    if (selectedCategories.length > 1) return `${selectedCategories.length} catégories`;
     return "Catégorie";
   };
 
@@ -75,17 +114,30 @@ export function CategoryFilterCombobox({
           aria-expanded={open}
           className={cn("justify-between", className)}
         >
-          <div className="flex items-center gap-2">
-            {selectedCategory ? (
+          <div className="flex items-center gap-2 min-w-0">
+            {selectedCategories.length === 1 ? (
               <>
                 <CategoryIcon
-                  icon={selectedCategory.icon}
-                  color={selectedCategory.color}
+                  icon={selectedCategories[0].icon}
+                  color={selectedCategories[0].color}
                   size={16}
                 />
-                <span>{selectedCategory.name}</span>
+                <span className="truncate">{selectedCategories[0].name}</span>
               </>
-            ) : value === "uncategorized" ? (
+            ) : selectedCategories.length > 1 ? (
+              <>
+                <div className="flex -space-x-1">
+                  {selectedCategories.slice(0, 3).map((cat) => (
+                    <div
+                      key={cat.id}
+                      className="w-4 h-4 rounded-full border-2 border-background"
+                      style={{ backgroundColor: cat.color }}
+                    />
+                  ))}
+                </div>
+                <span className="truncate">{selectedCategories.length} catégories</span>
+              </>
+            ) : isUncategorized ? (
               <>
                 <CircleSlash className="h-4 w-4 text-muted-foreground" />
                 <span>Non catégorisé</span>
@@ -97,11 +149,25 @@ export function CategoryFilterCombobox({
               </>
             )}
           </div>
-          <ChevronsUpDown className="ml-2 h-4 w-4 shrink-0 opacity-50" />
+          <div className="flex items-center gap-1">
+            {!isAll && (
+              <div
+                role="button"
+                className="h-4 w-4 rounded-sm hover:bg-muted flex items-center justify-center"
+                onClick={(e) => {
+                  e.stopPropagation();
+                  clearSelection();
+                }}
+              >
+                <X className="h-3 w-3" />
+              </div>
+            )}
+            <ChevronsUpDown className="h-4 w-4 shrink-0 opacity-50" />
+          </div>
         </Button>
       </PopoverTrigger>
       <PopoverContent
-        className="w-[250px] p-0"
+        className="w-[280px] p-0"
         align="start"
         onOpenAutoFocus={(e) => e.preventDefault()}
       >
@@ -116,7 +182,7 @@ export function CategoryFilterCombobox({
                 <Check
                   className={cn(
                     "ml-auto h-4 w-4",
-                    value === "all" ? "opacity-100" : "opacity-0"
+                    isAll ? "opacity-100" : "opacity-0"
                   )}
                 />
               </CommandItem>
@@ -129,7 +195,7 @@ export function CategoryFilterCombobox({
                 <Check
                   className={cn(
                     "ml-auto h-4 w-4",
-                    value === "uncategorized" ? "opacity-100" : "opacity-0"
+                    isUncategorized ? "opacity-100" : "opacity-0"
                   )}
                 />
               </CommandItem>
@@ -150,7 +216,7 @@ export function CategoryFilterCombobox({
                     <Check
                       className={cn(
                         "ml-auto h-4 w-4",
-                        value === parent.id ? "opacity-100" : "opacity-0"
+                        value.includes(parent.id) ? "opacity-100" : "opacity-0"
                       )}
                     />
                   </CommandItem>
@@ -170,7 +236,7 @@ export function CategoryFilterCombobox({
                       <Check
                         className={cn(
                           "ml-auto h-4 w-4",
-                          value === child.id ? "opacity-100" : "opacity-0"
+                          value.includes(child.id) ? "opacity-100" : "opacity-0"
                         )}
                       />
                     </CommandItem>
@@ -184,4 +250,3 @@ export function CategoryFilterCombobox({
     </Popover>
   );
 }
-