diff --git a/dev/Generated/NumberBox.properties.cpp b/dev/Generated/NumberBox.properties.cpp
index 4e8424810a..f5a38d47a2 100644
--- a/dev/Generated/NumberBox.properties.cpp
+++ b/dev/Generated/NumberBox.properties.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
+// Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
 // DO NOT EDIT! This file was generated by CustomTasks.DependencyPropertyCodeGen
@@ -29,6 +29,7 @@ GlobalDependencyProperty NumberBoxProperties::s_SelectionHighlightColorProperty{
 GlobalDependencyProperty NumberBoxProperties::s_SmallChangeProperty{ nullptr };
 GlobalDependencyProperty NumberBoxProperties::s_SpinButtonPlacementModeProperty{ nullptr };
 GlobalDependencyProperty NumberBoxProperties::s_TextProperty{ nullptr };
+GlobalDependencyProperty NumberBoxProperties::s_TextAlignmentProperty{ nullptr };
 GlobalDependencyProperty NumberBoxProperties::s_TextReadingOrderProperty{ nullptr };
 GlobalDependencyProperty NumberBoxProperties::s_ValidationModeProperty{ nullptr };
 GlobalDependencyProperty NumberBoxProperties::s_ValueProperty{ nullptr };
@@ -217,6 +218,17 @@ void NumberBoxProperties::EnsureProperties()
                 ValueHelper<winrt::hstring>::BoxedDefaultValue(),
                 winrt::PropertyChangedCallback(&OnTextPropertyChanged));
     }
+    if (!s_TextAlignmentProperty)
+    {
+        s_TextAlignmentProperty =
+            InitializeDependencyProperty(
+                L"TextAlignment",
+                winrt::name_of<winrt::TextAlignment>(),
+                winrt::name_of<winrt::NumberBox>(),
+                false /* isAttached */,
+                ValueHelper<winrt::TextAlignment>::BoxValueIfNecessary(winrt::TextAlignment::Left),
+                nullptr);
+    }
     if (!s_TextReadingOrderProperty)
     {
         s_TextReadingOrderProperty =
@@ -270,6 +282,7 @@ void NumberBoxProperties::ClearProperties()
     s_SmallChangeProperty = nullptr;
     s_SpinButtonPlacementModeProperty = nullptr;
     s_TextProperty = nullptr;
+    s_TextAlignmentProperty = nullptr;
     s_TextReadingOrderProperty = nullptr;
     s_ValidationModeProperty = nullptr;
     s_ValueProperty = nullptr;
@@ -583,6 +596,19 @@ winrt::hstring NumberBoxProperties::Text()
     return ValueHelper<winrt::hstring>::CastOrUnbox(static_cast<NumberBox*>(this)->GetValue(s_TextProperty));
 }
 
+void NumberBoxProperties::TextAlignment(winrt::TextAlignment const& value)
+{
+    [[gsl::suppress(con)]]
+    {
+    static_cast<NumberBox*>(this)->SetValue(s_TextAlignmentProperty, ValueHelper<winrt::TextAlignment>::BoxValueIfNecessary(value));
+    }
+}
+
+winrt::TextAlignment NumberBoxProperties::TextAlignment()
+{
+    return ValueHelper<winrt::TextAlignment>::CastOrUnbox(static_cast<NumberBox*>(this)->GetValue(s_TextAlignmentProperty));
+}
+
 void NumberBoxProperties::TextReadingOrder(winrt::TextReadingOrder const& value)
 {
     [[gsl::suppress(con)]]
diff --git a/dev/Generated/NumberBox.properties.h b/dev/Generated/NumberBox.properties.h
index 8beb3a75ba..c4fee4bc86 100644
--- a/dev/Generated/NumberBox.properties.h
+++ b/dev/Generated/NumberBox.properties.h
@@ -57,6 +57,9 @@ class NumberBoxProperties
     void Text(winrt::hstring const& value);
     winrt::hstring Text();
 
+    void TextAlignment(winrt::TextAlignment const& value);
+    winrt::TextAlignment TextAlignment();
+
     void TextReadingOrder(winrt::TextReadingOrder const& value);
     winrt::TextReadingOrder TextReadingOrder();
 
@@ -82,6 +85,7 @@ class NumberBoxProperties
     static winrt::DependencyProperty SmallChangeProperty() { return s_SmallChangeProperty; }
     static winrt::DependencyProperty SpinButtonPlacementModeProperty() { return s_SpinButtonPlacementModeProperty; }
     static winrt::DependencyProperty TextProperty() { return s_TextProperty; }
+    static winrt::DependencyProperty TextAlignmentProperty() { return s_TextAlignmentProperty; }
     static winrt::DependencyProperty TextReadingOrderProperty() { return s_TextReadingOrderProperty; }
     static winrt::DependencyProperty ValidationModeProperty() { return s_ValidationModeProperty; }
     static winrt::DependencyProperty ValueProperty() { return s_ValueProperty; }
@@ -102,6 +106,7 @@ class NumberBoxProperties
     static GlobalDependencyProperty s_SmallChangeProperty;
     static GlobalDependencyProperty s_SpinButtonPlacementModeProperty;
     static GlobalDependencyProperty s_TextProperty;
+    static GlobalDependencyProperty s_TextAlignmentProperty;
     static GlobalDependencyProperty s_TextReadingOrderProperty;
     static GlobalDependencyProperty s_ValidationModeProperty;
     static GlobalDependencyProperty s_ValueProperty;
diff --git a/dev/NumberBox/APITests/NumberBoxTests.cs b/dev/NumberBox/APITests/NumberBoxTests.cs
index f42ad787fa..ee4ea1c3a9 100644
--- a/dev/NumberBox/APITests/NumberBoxTests.cs
+++ b/dev/NumberBox/APITests/NumberBoxTests.cs
@@ -25,6 +25,26 @@ namespace Windows.UI.Xaml.Tests.MUXControls.ApiTests
     [TestClass]
     public class NumberBoxTests : ApiTestBase
     {
+        [TestMethod]
+        public void VerifyTextAlignmentPropogates()
+        {
+            var numberBox = SetupNumberBox();
+            TextBox textBox = null;
+
+            RunOnUIThread.Execute(() =>
+            {
+                Content.UpdateLayout();
+
+                textBox = TestUtilities.FindDescendents<TextBox>(numberBox).Where(e => e.Name == "InputBox").Single();
+                Verify.AreEqual(TextAlignment.Left, textBox.TextAlignment, "The default TextAlignment should be left.");
+
+                numberBox.TextAlignment = TextAlignment.Right;
+                Content.UpdateLayout();
+
+                Verify.AreEqual(TextAlignment.Right, textBox.TextAlignment, "The TextAlignment should have been updated to Right.");
+            });
+        }
+
         [TestMethod]
         public void VerifyNumberBoxCornerRadius()
         {
diff --git a/dev/NumberBox/NumberBox.idl b/dev/NumberBox/NumberBox.idl
index 6219149d03..4fda3b54e3 100644
--- a/dev/NumberBox/NumberBox.idl
+++ b/dev/NumberBox/NumberBox.idl
@@ -60,6 +60,13 @@ unsealed runtimeclass NumberBox : Windows.UI.Xaml.Controls.Control
     String PlaceholderText;
     Windows.UI.Xaml.Controls.Primitives.FlyoutBase SelectionFlyout;
     Windows.UI.Xaml.Media.SolidColorBrush SelectionHighlightColor;
+
+    [WUXC_VERSION_PREVIEW]
+    {
+        [MUX_DEFAULT_VALUE("winrt::TextAlignment::Left")]
+        Windows.UI.Xaml.TextAlignment TextAlignment;
+    }
+
     Windows.UI.Xaml.TextReadingOrder TextReadingOrder;
     Boolean PreventKeyboardDisplayOnProgrammaticFocus;
     Object Description;
@@ -98,6 +105,12 @@ unsealed runtimeclass NumberBox : Windows.UI.Xaml.Controls.Control
     static Windows.UI.Xaml.DependencyProperty PlaceholderTextProperty{ get; };
     static Windows.UI.Xaml.DependencyProperty SelectionFlyoutProperty{ get; };
     static Windows.UI.Xaml.DependencyProperty SelectionHighlightColorProperty{ get; };
+
+    [WUXC_VERSION_PREVIEW]
+    {
+        static Windows.UI.Xaml.DependencyProperty TextAlignmentProperty{ get; };
+    }
+
     static Windows.UI.Xaml.DependencyProperty TextReadingOrderProperty{ get; };
     static Windows.UI.Xaml.DependencyProperty PreventKeyboardDisplayOnProgrammaticFocusProperty{ get; };
     static Windows.UI.Xaml.DependencyProperty DescriptionProperty{ get; };
diff --git a/dev/NumberBox/NumberBox.xaml b/dev/NumberBox/NumberBox.xaml
index 48311e556f..92af5aefc6 100644
--- a/dev/NumberBox/NumberBox.xaml
+++ b/dev/NumberBox/NumberBox.xaml
@@ -31,13 +31,13 @@
                             <VisualStateGroup x:Name="SpinButtonStates">
                                 <VisualState x:Name="SpinButtonsCollapsed" />
 
-                                    <VisualState x:Name="SpinButtonsVisible">
-                                        <VisualState.Setters>
-                                            <Setter Target="DownSpinButton.Visibility" Value="Visible" />
-                                            <Setter Target="UpSpinButton.Visibility" Value="Visible" />
-                                            <contract7Present:Setter Target="InputBox.CornerRadius" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=CornerRadius, Converter={StaticResource LeftCornerRadiusFilterConverter}}" />
-                                        </VisualState.Setters>
-                                    </VisualState>
+                                <VisualState x:Name="SpinButtonsVisible">
+                                    <VisualState.Setters>
+                                        <Setter Target="DownSpinButton.Visibility" Value="Visible" />
+                                        <Setter Target="UpSpinButton.Visibility" Value="Visible" />
+                                        <contract7Present:Setter Target="InputBox.CornerRadius" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=CornerRadius, Converter={StaticResource LeftCornerRadiusFilterConverter}}" />
+                                    </VisualState.Setters>
+                                </VisualState>
 
                                 <VisualState x:Name="SpinButtonsPopup">
                                     <VisualState.Setters>
@@ -93,7 +93,7 @@
                             <RowDefinition Height="Auto" />
                             <RowDefinition Height="Auto" />
                         </Grid.RowDefinitions>
-                        
+
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="*" />
                             <ColumnDefinition Width="Auto" />
@@ -125,6 +125,7 @@
                             FontSize="{TemplateBinding FontSize}"
                             FontWeight="{TemplateBinding FontWeight}"
                             FontFamily="{TemplateBinding FontFamily}"
+                            TextAlignment="{TemplateBinding TextAlignment}"
                             contract7Present:CornerRadius="{TemplateBinding CornerRadius}" />
 
                         <Popup x:Name="UpDownPopup"
diff --git a/dev/NumberBox/TestUI/NumberBoxPage.xaml b/dev/NumberBox/TestUI/NumberBoxPage.xaml
index a24fa37483..7c5ab0719f 100644
--- a/dev/NumberBox/TestUI/NumberBoxPage.xaml
+++ b/dev/NumberBox/TestUI/NumberBoxPage.xaml
@@ -1,4 +1,4 @@
-<!-- Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT License. See LICENSE in the project root for license information. -->
+<!-- Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT License. See LICENSE in the project root for license information. -->
 <local:TestPage
     x:Class="MUXControlsTestApp.NumberBoxPage"
     x:Name="NumberBoxTestPage"
@@ -31,6 +31,12 @@
                 <ComboBoxItem Content="Inline"/>
             </ComboBox>
 
+            <ComboBox x:Name="TextAlignmentComboBox" AutomationProperties.Name="TextAlignmentComboBox" Header="TextAlignment" SelectedIndex="0" SelectionChanged="TextAlignment_Changed">
+                <ComboBoxItem Content="Left" />
+                <ComboBoxItem Content="Center" />
+                <ComboBoxItem Content="Right" />
+            </ComboBox>
+
             <CheckBox x:Name="EnabledCheckBox" AutomationProperties.Name="EnabledCheckBox" IsChecked="True" Content="Enabled"/>
 
             <CheckBox x:Name="ExpressionCheckBox" AutomationProperties.Name="ExpressionCheckBox" IsChecked="False" Content="Accepts Expression"/>
diff --git a/dev/NumberBox/TestUI/NumberBoxPage.xaml.cs b/dev/NumberBox/TestUI/NumberBoxPage.xaml.cs
index f6dd781dc0..f50ec8785b 100644
--- a/dev/NumberBox/TestUI/NumberBoxPage.xaml.cs
+++ b/dev/NumberBox/TestUI/NumberBoxPage.xaml.cs
@@ -46,6 +46,25 @@ private void SpinMode_Changed(object sender, RoutedEventArgs e)
             }
         }
 
+        private void TextAlignment_Changed(object sender, RoutedEventArgs e)
+        {
+            if (TestNumberBox != null)
+            {
+                if (TextAlignmentComboBox.SelectedIndex == 0)
+                {
+                    TestNumberBox.TextAlignment = TextAlignment.Left;
+                }
+                else if (TextAlignmentComboBox.SelectedIndex == 1)
+                {
+                    TestNumberBox.TextAlignment = TextAlignment.Center;
+                }
+                else if (TextAlignmentComboBox.SelectedIndex == 2)
+                {
+                    TestNumberBox.TextAlignment = TextAlignment.Right;
+                }
+            }
+        }
+
         private void Validation_Changed(object sender, RoutedEventArgs e)
         {
             if (TestNumberBox != null)