diff --git a/CHANGES.md b/CHANGES.md
index 5227bddba7426..bb5e8f64fc96b 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -56,6 +56,7 @@
 
 * New highly anticipated feature X added to Python SDK ([BEAM-X](https://issues.apache.org/jira/browse/BEAM-X)).
 * New highly anticipated feature Y added to Java SDK ([BEAM-Y](https://issues.apache.org/jira/browse/BEAM-Y)).
+* The Beam Java API for Calcite SqlTransform is no longer experimental ([BEAM-12680](https://issues.apache.org/jira/browse/BEAM-12680)).
 
 ## I/Os
 
diff --git a/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/SqlTransform.java b/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/SqlTransform.java
index 397d1171b5423..5ddaca5baaf11 100644
--- a/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/SqlTransform.java
+++ b/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/SqlTransform.java
@@ -107,12 +107,7 @@
  * }</pre>
  */
 @AutoValue
-@Experimental
 @AutoValue.CopyAnnotations
-@SuppressWarnings({
-  "rawtypes", // TODO(https://issues.apache.org/jira/browse/BEAM-10556)
-  "nullness" // TODO(https://issues.apache.org/jira/browse/BEAM-10402)
-})
 public abstract class SqlTransform extends PTransform<PInput, PCollection<Row>> {
   static final String PCOLLECTION_NAME = "PCOLLECTION";
 
@@ -122,9 +117,9 @@ public abstract class SqlTransform extends PTransform<PInput, PCollection<Row>>
 
   abstract QueryParameters queryParameters();
 
-  abstract List<UdfDefinition> udfDefinitions();
+  abstract @Experimental List<UdfDefinition> udfDefinitions();
 
-  abstract List<UdafDefinition> udafDefinitions();
+  abstract @Experimental List<UdafDefinition> udafDefinitions();
 
   abstract boolean autoLoading();
 
@@ -154,8 +149,9 @@ public PCollection<Row> expand(PInput input) {
 
     tableProviderMap().forEach(sqlEnvBuilder::addSchema);
 
-    if (defaultTableProvider() != null) {
-      sqlEnvBuilder.setCurrentSchema(defaultTableProvider());
+    final @Nullable String defaultTableProvider = defaultTableProvider();
+    if (defaultTableProvider != null) {
+      sqlEnvBuilder.setCurrentSchema(defaultTableProvider);
     }
 
     sqlEnvBuilder.setQueryPlannerClassName(
@@ -239,6 +235,7 @@ public SqlTransform withDefaultTableProvider(String name, TableProvider tablePro
     return withTableProvider(name, tableProvider).toBuilder().setDefaultTableProvider(name).build();
   }
 
+  @Experimental
   public SqlTransform withQueryPlannerClass(Class<? extends QueryPlanner> clazz) {
     return toBuilder().setQueryPlannerClassName(clazz.getName()).build();
   }
@@ -265,6 +262,7 @@ public SqlTransform withAutoLoading(boolean autoLoading) {
    *
    * <p>Refer to {@link BeamSqlUdf} for more about how to implement a UDF in BeamSql.
    */
+  @Experimental
   public SqlTransform registerUdf(String functionName, Class<? extends BeamSqlUdf> clazz) {
     return registerUdf(functionName, clazz, BeamSqlUdf.UDF_METHOD);
   }
@@ -273,6 +271,7 @@ public SqlTransform registerUdf(String functionName, Class<? extends BeamSqlUdf>
    * Register {@link SerializableFunction} as a UDF function used in this query. Note, {@link
    * SerializableFunction} must have a constructor without arguments.
    */
+  @Experimental
   public SqlTransform registerUdf(String functionName, SerializableFunction sfn) {
     return registerUdf(functionName, sfn.getClass(), "apply");
   }
@@ -288,6 +287,7 @@ private SqlTransform registerUdf(String functionName, Class<?> clazz, String met
   }
 
   /** register a {@link Combine.CombineFn} as UDAF function used in this query. */
+  @Experimental
   public SqlTransform registerUdaf(String functionName, Combine.CombineFn combineFn) {
     ImmutableList<UdafDefinition> newUdafs =
         ImmutableList.<UdafDefinition>builder()
@@ -311,6 +311,7 @@ static Builder builder() {
   }
 
   @AutoValue.Builder
+  @AutoValue.CopyAnnotations
   abstract static class Builder {
     abstract Builder setQueryString(String queryString);
 
@@ -318,9 +319,9 @@ abstract static class Builder {
 
     abstract Builder setDdlStrings(List<String> ddlStrings);
 
-    abstract Builder setUdfDefinitions(List<UdfDefinition> udfDefinitions);
+    abstract @Experimental Builder setUdfDefinitions(List<UdfDefinition> udfDefinitions);
 
-    abstract Builder setUdafDefinitions(List<UdafDefinition> udafDefinitions);
+    abstract @Experimental Builder setUdafDefinitions(List<UdafDefinition> udafDefinitions);
 
     abstract Builder setAutoLoading(boolean autoLoading);
 
@@ -335,7 +336,7 @@ abstract static class Builder {
 
   @AutoValue
   @AutoValue.CopyAnnotations
-  @SuppressWarnings({"rawtypes"})
+  @Experimental
   abstract static class UdfDefinition {
     abstract String udfName();
 
@@ -350,7 +351,7 @@ static UdfDefinition of(String udfName, Class<?> clazz, String methodName) {
 
   @AutoValue
   @AutoValue.CopyAnnotations
-  @SuppressWarnings({"rawtypes"})
+  @Experimental
   abstract static class UdafDefinition {
     abstract String udafName();
 
diff --git a/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/meta/provider/UdfUdafProvider.java b/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/meta/provider/UdfUdafProvider.java
index 8b3d95d26b36a..85c917d302323 100644
--- a/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/meta/provider/UdfUdafProvider.java
+++ b/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/meta/provider/UdfUdafProvider.java
@@ -19,6 +19,7 @@
 
 import java.util.Collections;
 import java.util.Map;
+import org.apache.beam.sdk.annotations.Experimental;
 import org.apache.beam.sdk.extensions.sql.BeamSqlUdf;
 import org.apache.beam.sdk.transforms.Combine;
 import org.apache.beam.sdk.transforms.SerializableFunction;
@@ -27,6 +28,7 @@
 @SuppressWarnings({
   "rawtypes" // TODO(https://issues.apache.org/jira/browse/BEAM-10556)
 })
+@Experimental
 public interface UdfUdafProvider {
   /** For UDFs implement {@link BeamSqlUdf}. */
   default Map<String, Class<? extends BeamSqlUdf>> getBeamSqlUdfs() {