diff --git a/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.html b/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.html
index 225012159..c0c9b0c74 100644
--- a/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.html
+++ b/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.html
@@ -68,6 +68,11 @@
     ></ng-select>
   } @else if (getCustomFieldByID(atom.field)?.data_type === CustomFieldDataType.DocumentLink) {
     <pngx-input-document-link [(ngModel)]="atom.value" class="w-25 form-select doc-link-select p-0" placeholder="Search docs..." i18n-placeholder [minimal]="true"></pngx-input-document-link>
+  } @else if (getCustomFieldByID(atom.field)?.data_type === CustomFieldDataType.Monetary) {
+    <input class="w-25 form-control rounded-end" type="text" inputmode="decimal"
+      [ngModel]="atom.value"
+      (ngModelChange)="setMonetaryValue(atom, $event)"
+      [disabled]="disabled">
   } @else {
     <input class="w-25 form-control rounded-end" type="text" [(ngModel)]="atom.value" [disabled]="disabled">
   }
diff --git a/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.spec.ts b/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.spec.ts
index a9c161d83..fb305ca1c 100644
--- a/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.spec.ts
+++ b/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.spec.ts
@@ -1,5 +1,6 @@
 import { provideHttpClient, withInterceptorsFromDi } from '@angular/common/http'
 import { provideHttpClientTesting } from '@angular/common/http/testing'
+import { LOCALE_ID } from '@angular/core'
 import { ComponentFixture, TestBed } from '@angular/core/testing'
 import { FormsModule, ReactiveFormsModule } from '@angular/forms'
 import { NgbDropdownModule } from '@ng-bootstrap/ng-bootstrap'
@@ -41,6 +42,12 @@ const customFields = [
       ],
     },
   },
+  {
+    id: 3,
+    name: 'Test Monetary Field',
+    data_type: CustomFieldDataType.Monetary,
+    extra_data: { default_currency: 'EUR' },
+  },
 ]
 
 describe('CustomFieldsQueryDropdownComponent', () => {
@@ -61,6 +68,7 @@ describe('CustomFieldsQueryDropdownComponent', () => {
       providers: [
         provideHttpClient(withInterceptorsFromDi()),
         provideHttpClientTesting(),
+        { provide: LOCALE_ID, useValue: 'de' },
       ],
     }).compileComponents()
 
@@ -150,6 +158,22 @@ describe('CustomFieldsQueryDropdownComponent', () => {
     expect(options2).toEqual([])
   })
 
+  it('should normalize localized monetary comparison values', () => {
+    const atom = new CustomFieldQueryAtom([3, 'exact', null])
+
+    component.setMonetaryComparisonValue(atom, '1.234,56')
+
+    expect(atom.value).toEqual('1234.56')
+  })
+
+  it('should preserve API-formatted monetary comparison values', () => {
+    const atom = new CustomFieldQueryAtom([3, 'exact', null])
+
+    component.setMonetaryComparisonValue(atom, '1234.56')
+
+    expect(atom.value).toEqual('1234.56')
+  })
+
   it('should remove an element from the selection model', () => {
     const expression = new CustomFieldQueryExpression()
     const atom = new CustomFieldQueryAtom()
diff --git a/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.ts b/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.ts
index 1d2ce1f5c..733753b8b 100644
--- a/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.ts
+++ b/src-ui/src/app/components/common/custom-fields-query-dropdown/custom-fields-query-dropdown.component.ts
@@ -1,9 +1,14 @@
-import { NgTemplateOutlet } from '@angular/common'
+import {
+  getLocaleNumberSymbol,
+  NgTemplateOutlet,
+  NumberSymbol,
+} from '@angular/common'
 import {
   Component,
   EventEmitter,
   inject,
   Input,
+  LOCALE_ID,
   Output,
   QueryList,
   signal,
@@ -212,6 +217,7 @@ export class CustomFieldQueriesModel {
 })
 export class CustomFieldsQueryDropdownComponent extends LoadingComponentWithPermissions {
   protected customFieldsService = inject(CustomFieldsService)
+  private locale = inject(LOCALE_ID)
 
   public CustomFieldQueryComponentType = CustomFieldQueryElementType
   public CustomFieldQueryOperator = CustomFieldQueryOperator
@@ -376,4 +382,18 @@ export class CustomFieldsQueryDropdownComponent extends LoadingComponentWithPerm
     }
     return []
   }
+
+  setMonetaryValue(atom: CustomFieldQueryAtom, value: string) {
+    // Normalize the decimal symbol e.g. . vs , by locale
+    const decimalSymbol = getLocaleNumberSymbol(
+      this.locale,
+      NumberSymbol.Decimal
+    )
+    if (decimalSymbol !== '.' && value.includes(decimalSymbol)) {
+      const groupSymbol = getLocaleNumberSymbol(this.locale, NumberSymbol.Group)
+      value = value.split(groupSymbol).join('').split(decimalSymbol).join('.')
+    }
+
+    atom.value = value
+  }
 }