diff --git a/src/material/checkbox/checkbox.html b/src/material/checkbox/checkbox.html
index 5c9cbab0416e..bad07f366bd9 100644
--- a/src/material/checkbox/checkbox.html
+++ b/src/material/checkbox/checkbox.html
@@ -8,13 +8,13 @@
            type="checkbox"
            class="mdc-checkbox__native-control"
            [class.mdc-checkbox--selected]="checked"
-           [attr.aria-checked]="_getAriaChecked()"
            [attr.aria-label]="ariaLabel || null"
            [attr.aria-labelledby]="ariaLabelledby"
            [attr.aria-describedby]="ariaDescribedby"
            [attr.name]="name"
            [attr.value]="value"
            [checked]="checked"
+           [indeterminate]="indeterminate"
            [disabled]="disabled"
            [id]="inputId"
            [required]="required"
diff --git a/src/material/checkbox/checkbox.spec.ts b/src/material/checkbox/checkbox.spec.ts
index 4d6d39a76c1d..8942f597ffa2 100644
--- a/src/material/checkbox/checkbox.spec.ts
+++ b/src/material/checkbox/checkbox.spec.ts
@@ -96,9 +96,6 @@ describe('MDC-based MatCheckbox', () => {
     it('should add and remove indeterminate state', fakeAsync(() => {
       expect(inputElement.checked).toBe(false);
       expect(inputElement.indeterminate).toBe(false);
-      expect(inputElement.getAttribute('aria-checked'))
-        .withContext('Expect aria-checked to be false')
-        .toBe('false');
 
       testComponent.isIndeterminate = true;
       fixture.detectChanges();
@@ -106,9 +103,9 @@ describe('MDC-based MatCheckbox', () => {
 
       expect(inputElement.checked).toBe(false);
       expect(inputElement.indeterminate).toBe(true);
-      expect(inputElement.getAttribute('aria-checked'))
-        .withContext('Expect aria checked to be mixed for indeterminate checkbox')
-        .toBe('mixed');
+      expect(inputElement.hasAttribute('aria-checked'))
+        .withContext('Expect aria-checked attribute to not be used')
+        .toBe(false);
 
       testComponent.isIndeterminate = false;
       fixture.detectChanges();
@@ -148,9 +145,9 @@ describe('MDC-based MatCheckbox', () => {
       expect(inputElement.indeterminate).toBe(true);
       expect(inputElement.checked).toBe(true);
       expect(testComponent.isIndeterminate).toBe(true);
-      expect(inputElement.getAttribute('aria-checked'))
-        .withContext('Expect aria checked to be true')
-        .toBe('true');
+      expect(inputElement.hasAttribute('aria-checked'))
+        .withContext('Expect aria-checked attribute to not be used')
+        .toBe(false);
 
       inputElement.click();
       fixture.detectChanges();
diff --git a/src/material/checkbox/checkbox.ts b/src/material/checkbox/checkbox.ts
index 2f97a74ef393..afea3432f432 100644
--- a/src/material/checkbox/checkbox.ts
+++ b/src/material/checkbox/checkbox.ts
@@ -311,14 +311,6 @@ export abstract class _MatCheckboxBase<E>
     this.disabled = isDisabled;
   }
 
-  _getAriaChecked(): 'true' | 'false' | 'mixed' {
-    if (this.checked) {
-      return 'true';
-    }
-
-    return this.indeterminate ? 'mixed' : 'false';
-  }
-
   private _transitionCheckState(newState: TransitionCheckState) {
     let oldState = this._currentCheckState;
     let element = this._getAnimationTargetElement();
diff --git a/src/material/legacy-checkbox/checkbox.html b/src/material/legacy-checkbox/checkbox.html
index 22b400daac3c..4cdd3b374070 100644
--- a/src/material/legacy-checkbox/checkbox.html
+++ b/src/material/legacy-checkbox/checkbox.html
@@ -12,7 +12,6 @@
            [tabIndex]="tabIndex"
            [attr.aria-label]="ariaLabel || null"
            [attr.aria-labelledby]="ariaLabelledby"
-           [attr.aria-checked]="_getAriaChecked()"
            [attr.aria-describedby]="ariaDescribedby"
            (change)="_onInteractionEvent($event)"
            (click)="_onInputClick($event)">
diff --git a/src/material/legacy-checkbox/checkbox.spec.ts b/src/material/legacy-checkbox/checkbox.spec.ts
index 5038127f28cf..1241ae3d58f1 100644
--- a/src/material/legacy-checkbox/checkbox.spec.ts
+++ b/src/material/legacy-checkbox/checkbox.spec.ts
@@ -73,9 +73,6 @@ describe('MatLegacyCheckbox', () => {
       expect(checkboxNativeElement.classList).not.toContain('mat-checkbox-checked');
       expect(inputElement.checked).toBe(false);
       expect(inputElement.indeterminate).toBe(false);
-      expect(inputElement.getAttribute('aria-checked'))
-        .withContext('Expect aria-checked to be false')
-        .toBe('false');
 
       testComponent.isIndeterminate = true;
       fixture.detectChanges();
@@ -83,9 +80,6 @@ describe('MatLegacyCheckbox', () => {
       expect(checkboxNativeElement.classList).toContain('mat-checkbox-indeterminate');
       expect(inputElement.checked).toBe(false);
       expect(inputElement.indeterminate).toBe(true);
-      expect(inputElement.getAttribute('aria-checked'))
-        .withContext('Expect aria checked to be mixed for indeterminate checkbox')
-        .toBe('mixed');
 
       testComponent.isIndeterminate = false;
       fixture.detectChanges();
@@ -125,9 +119,6 @@ describe('MatLegacyCheckbox', () => {
       expect(inputElement.indeterminate).toBe(true);
       expect(inputElement.checked).toBe(true);
       expect(testComponent.isIndeterminate).toBe(true);
-      expect(inputElement.getAttribute('aria-checked'))
-        .withContext('Expect aria checked to be true')
-        .toBe('true');
 
       inputElement.click();
       fixture.detectChanges();
diff --git a/tools/public_api_guard/material/checkbox.md b/tools/public_api_guard/material/checkbox.md
index 70a37345b4e8..2713e34a456a 100644
--- a/tools/public_api_guard/material/checkbox.md
+++ b/tools/public_api_guard/material/checkbox.md
@@ -94,8 +94,6 @@ export abstract class _MatCheckboxBase<E> extends _MatCheckboxMixinBase implemen
     abstract focus(origin?: FocusOrigin): void;
     protected abstract _getAnimationTargetElement(): HTMLElement | null;
     // (undocumented)
-    _getAriaChecked(): 'true' | 'false' | 'mixed';
-    // (undocumented)
     protected _handleInputClick(): void;
     id: string;
     get indeterminate(): boolean;