<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macCatalyst: -",
    "tvOS: 15.0.0 -",
    "visionOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "UIKit",
  "identifier" : "/documentation/UIKit/UIButton/Configuration-swift.struct/subtitle",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "UIKit"
    ],
    "preciseIdentifier" : "s:So8UIButtonC5UIKitE13ConfigurationV8subtitleSSSgvp"
  },
  "title" : "subtitle"
}
-->

# subtitle

The text the subtitle label of the button displays.

```
var subtitle: String? { get set }
```

## Discussion

This property matches the string value of the [`attributedSubtitle`](/documentation/UIKit/UIButton/Configuration-swift.struct/attributedSubtitle) property. To change the button subtitle when the button state changes, use [`configurationUpdateHandler`](/documentation/UIKit/UIButton/configurationUpdateHandler-swift.property) or [`updateConfiguration()`](/documentation/UIKit/UIButton/updateConfiguration()).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)