diff --git a/projects/cdk/schematics/ng-update/v4/steps/migrate-templates.ts b/projects/cdk/schematics/ng-update/v4/steps/migrate-templates.ts
index 1725156bbe01..113c6ec81bab 100644
--- a/projects/cdk/schematics/ng-update/v4/steps/migrate-templates.ts
+++ b/projects/cdk/schematics/ng-update/v4/steps/migrate-templates.ts
@@ -33,6 +33,7 @@ import {
     migrateAvatar,
     migrateBadge,
     migrateBadgedContent,
+    migrateButtonAppearance,
     migrateCheckbox,
     migrateExpandable,
     migrateFocusable,
@@ -105,6 +106,7 @@ export function migrateTemplates(fileSystem: DevkitFileSystem, options: TuiSchem
         migrateProgressSegmented,
         migrateThumbnailCard,
         migrateOverscroll,
+        migrateButtonAppearance,
         migrateLabel,
     ] as const;
 
diff --git a/projects/cdk/schematics/ng-update/v4/steps/templates/index.ts b/projects/cdk/schematics/ng-update/v4/steps/templates/index.ts
index 30d7ef96619e..725e7ba814d6 100644
--- a/projects/cdk/schematics/ng-update/v4/steps/templates/index.ts
+++ b/projects/cdk/schematics/ng-update/v4/steps/templates/index.ts
@@ -1,6 +1,7 @@
 export * from './migrate-avatar';
 export * from './migrate-badge';
 export * from './migrate-badged-content';
+export * from './migrate-button-appearance';
 export * from './migrate-expandable';
 export * from './migrate-focusable';
 export * from './migrate-label';
diff --git a/projects/cdk/schematics/ng-update/v4/steps/templates/migrate-button-appearance.ts b/projects/cdk/schematics/ng-update/v4/steps/templates/migrate-button-appearance.ts
new file mode 100644
index 000000000000..b0c067e370f0
--- /dev/null
+++ b/projects/cdk/schematics/ng-update/v4/steps/templates/migrate-button-appearance.ts
@@ -0,0 +1,92 @@
+import type {UpdateRecorder} from '@angular-devkit/schematics';
+import type {DevkitFileSystem} from 'ng-morph';
+import type {ElementLocation} from 'parse5/dist/common/token';
+import type {Element} from 'parse5/dist/tree-adapters/default';
+
+import {findElementsWithDirective} from '../../../../utils/templates/elements';
+import {
+    getTemplateFromTemplateResource,
+    getTemplateOffset,
+} from '../../../../utils/templates/template-resource';
+import type {TemplateResource} from '../../../interfaces';
+import {removeAttrs} from '../utils/remove-attrs';
+
+const tuiButtonSelectors = ['tuiButton', 'tuiIconButton'];
+
+const appearanceInputName = 'appearance';
+const appearanceInputNameDict = {
+    [appearanceInputName]: true,
+    [`[${appearanceInputName}]`]: true,
+} as const;
+
+export function migrateButtonAppearance({
+    resource,
+    recorder,
+    fileSystem,
+}: {
+    fileSystem: DevkitFileSystem;
+    recorder: UpdateRecorder;
+    resource: TemplateResource;
+}): void {
+    const template = getTemplateFromTemplateResource(resource, fileSystem);
+    const templateOffset = getTemplateOffset(resource);
+
+    const elements = tuiButtonSelectors.flatMap((selector) =>
+        findElementsWithDirective(template, selector).filter(
+            ({sourceCodeLocation, attrs}) =>
+                !!sourceCodeLocation &&
+                attrs.some(({name}) => appearanceInputNameDict[name]),
+        ),
+    );
+
+    if (!elements.length) {
+        return;
+    }
+
+    const whiteBlockValue = 'whiteblock-active';
+
+    elements.forEach(({attrs, sourceCodeLocation}: Element) => {
+        const whiteBlockActiveAttr = attrs.find(
+            ({value, name}) =>
+                appearanceInputNameDict[name] &&
+                (value === whiteBlockValue || value === `'${whiteBlockValue}'`),
+        );
+
+        if (whiteBlockActiveAttr) {
+            removeAttrs(
+                [whiteBlockActiveAttr],
+                sourceCodeLocation as ElementLocation,
+                recorder,
+                templateOffset,
+            );
+
+            const {startOffset} = sourceCodeLocation?.attrs?.[
+                whiteBlockActiveAttr.name
+            ] || {startOffset: 0, endOffset: 0};
+
+            recorder.insertLeft(
+                startOffset + templateOffset,
+                ` ${appearanceInputName}="whiteblock"`,
+            );
+            recorder.insertLeft(startOffset + templateOffset, ' data-mode="checked"');
+        }
+    });
+
+    const elementWithConditionAppearance = elements.find(({attrs}: Element) =>
+        attrs.some(
+            ({name, value}) =>
+                name === `[${appearanceInputName}]` && !value.trim().startsWith("'"),
+        ),
+    );
+
+    if (elementWithConditionAppearance) {
+        addTodo(recorder, templateOffset);
+    }
+}
+
+function addTodo(recorder: UpdateRecorder, templateOffset: number): void {
+    recorder.insertRight(
+        templateOffset,
+        '<!-- Taiga migration TODO: tuiButton "whiteblock-active" appearance is no longer available. Use \'appearance="whiteblock" data-mode="checked"\' -->\n',
+    );
+}
diff --git a/projects/cdk/schematics/ng-update/v4/tests/schematic-migrate-button-appearance.spec.ts b/projects/cdk/schematics/ng-update/v4/tests/schematic-migrate-button-appearance.spec.ts
new file mode 100644
index 000000000000..01abbb261331
--- /dev/null
+++ b/projects/cdk/schematics/ng-update/v4/tests/schematic-migrate-button-appearance.spec.ts
@@ -0,0 +1,143 @@
+import {join} from 'node:path';
+
+import {HostTree} from '@angular-devkit/schematics';
+import {SchematicTestRunner, UnitTestTree} from '@angular-devkit/schematics/testing';
+import type {TuiSchema} from '@taiga-ui/cdk/schematics/ng-add/schema';
+import {
+    createProject,
+    createSourceFile,
+    resetActiveProject,
+    saveActiveProject,
+    setActiveProject,
+} from 'ng-morph';
+
+import {createAngularJson} from '../../../utils/create-angular-json';
+
+const collectionPath = join(__dirname, '../../../migration.json');
+
+const COMPONENT = `
+import {TuiButton} from '@taiga-ui/core/components/button';
+
+@Component({
+    standalone: true,
+    templateUrl: './test.template.html',
+    imports: [TuiButton]
+})
+class TestComponent {}
+`;
+
+const COMPONENT_WITH_CONDITION = `
+import {TuiButton} from '@taiga-ui/core/components/button';
+
+@Component({
+    standalone: true,
+    templateUrl: './test-with-condition.template.html',
+    imports: [TuiButton]
+})
+class TestWithConditionComponent {
+    get appearance() {return 'flat'};
+}
+`;
+
+const TEMPLATE_BEFORE = `
+<button tuiButton></button>
+
+<button tuiButton [appearance]="'whiteblock-active'"></button>
+
+<button tuiButton appearance="whiteblock-active"></button>
+
+<a tuiIconButton [appearance]="'whiteblock-active'"></a>
+
+<a tuiButton [appearance]="
+  'flat'
+"></a>
+`;
+
+const TEMPLATE_WITH_CONDITION_BEFORE = `
+<a tuiButton [appearance]="
+  true ? appearance : 'flat'
+"></a>
+`;
+
+const TEMPLATE_AFTER = `
+<button tuiButton></button>
+
+<button tuiButton appearance="whiteblock" data-mode="checked"></button>
+
+<button tuiButton appearance="whiteblock" data-mode="checked"></button>
+
+<a tuiIconButton appearance="whiteblock" data-mode="checked"></a>
+
+<a tuiButton [appearance]="
+  'flat'
+"></a>
+`;
+
+const TEMPLATE_WITH_CONDITION_AFTER = `<!-- Taiga migration TODO: tuiButton "whiteblock-active" appearance is no longer available. Use 'appearance="whiteblock" data-mode="checked"' -->
+
+<a tuiButton [appearance]="
+  true ? appearance : 'flat'
+"></a>
+`;
+
+describe('ng-update', () => {
+    let host: UnitTestTree;
+    let runner: SchematicTestRunner;
+
+    beforeEach(() => {
+        host = new UnitTestTree(new HostTree());
+        runner = new SchematicTestRunner('schematics', collectionPath);
+
+        setActiveProject(createProject(host));
+
+        createMainFiles();
+
+        saveActiveProject();
+    });
+
+    it('should migrate button appearance in a template', async () => {
+        const tree = await runner.runSchematic(
+            'updateToV4',
+            {'skip-logs': process.env['TUI_CI'] === 'true'} as Partial<TuiSchema>,
+            host,
+        );
+
+        expect(tree.readContent('test/app/test.template.html')).toEqual(TEMPLATE_AFTER);
+    });
+
+    it('should migrate button appearance with condition in a template', async () => {
+        const tree = await runner.runSchematic(
+            'updateToV4',
+            {'skip-logs': process.env['TUI_CI'] === 'true'} as Partial<TuiSchema>,
+            host,
+        );
+
+        expect(tree.readContent('test/app/test-with-condition.template.html')).toEqual(
+            TEMPLATE_WITH_CONDITION_AFTER,
+        );
+    });
+
+    afterEach(() => {
+        resetActiveProject();
+    });
+});
+
+function createMainFiles(): void {
+    createSourceFile('test/app/test.component.ts', COMPONENT);
+    createSourceFile('test/app/test.template.html', TEMPLATE_BEFORE);
+
+    createSourceFile(
+        'test/app/test-with-condition.component.ts',
+        COMPONENT_WITH_CONDITION,
+    );
+    createSourceFile(
+        'test/app/test-with-condition.template.html',
+        TEMPLATE_WITH_CONDITION_BEFORE,
+    );
+
+    createAngularJson();
+    createSourceFile(
+        'package.json',
+        '{"dependencies": {"@angular/core": "~13.0.0", "@taiga-ui/addon-commerce": "~3.42.0"}}',
+    );
+}