diff --git a/crates/iceberg/src/transaction/mod.rs b/crates/iceberg/src/transaction/mod.rs
index cb2ff7cf37..0c936a456f 100644
--- a/crates/iceberg/src/transaction/mod.rs
+++ b/crates/iceberg/src/transaction/mod.rs
@@ -332,6 +332,39 @@ mod tests {
             .unwrap()
     }
 
+    pub(crate) async fn make_v2_minimal_table_in_catalog(catalog: &impl Catalog) -> Table {
+        let table_ident =
+            TableIdent::from_strs([format!("ns1-{}", uuid::Uuid::new_v4()), "test1".to_string()])
+                .unwrap();
+
+        catalog
+            .create_namespace(table_ident.namespace(), HashMap::new())
+            .await
+            .unwrap();
+
+        let file = File::open(format!(
+            "{}/testdata/table_metadata/{}",
+            env!("CARGO_MANIFEST_DIR"),
+            "TableMetadataV2ValidMinimal.json"
+        ))
+        .unwrap();
+        let reader = BufReader::new(file);
+        let base_metadata = serde_json::from_reader::<_, TableMetadata>(reader).unwrap();
+
+        let table_creation = TableCreation::builder()
+            .schema((**base_metadata.current_schema()).clone())
+            .partition_spec((**base_metadata.default_partition_spec()).clone())
+            .sort_order((**base_metadata.default_sort_order()).clone())
+            .name(table_ident.name().to_string())
+            .format_version(crate::spec::FormatVersion::V2)
+            .build();
+
+        catalog
+            .create_table(table_ident.namespace(), table_creation)
+            .await
+            .unwrap()
+    }
+
     /// Helper function to create a test table with retry properties
     pub(super) fn setup_test_table(num_retries: &str) -> Table {
         let table = make_v2_table();
@@ -584,3 +617,131 @@ mod test_row_lineage {
         assert_eq!(manifest_file.first_row_id, Some(30));
     }
 }
+
+#[cfg(test)]
+mod test_commit_against_memory_catalog {
+    //! End-to-end tests for transaction APIs against an in-process `MemoryCatalog`.
+    //!
+    //! Each test constructs a table inside a fresh memory catalog, builds a
+    //! transaction, commits it, and then asserts that the catalog's view of the
+    //! table reflects the action's intended metadata change. This complements
+    //! the action-level unit tests in the per-action modules (which only inspect
+    //! the produced `ActionCommit`) and the mock-catalog tests in this file
+    //! (which exercise the retry loop).
+
+    use crate::Catalog;
+    use crate::memory::tests::new_memory_catalog;
+    use crate::transaction::tests::make_v2_minimal_table_in_catalog;
+    use crate::transaction::{ApplyTransactionAction, Transaction};
+
+    #[tokio::test]
+    async fn test_update_properties_commit_round_trip() {
+        let catalog = new_memory_catalog().await;
+        let table = make_v2_minimal_table_in_catalog(&catalog).await;
+
+        // Sanity: the keys we are about to set are not already present.
+        assert!(table.metadata().properties().get("owner").is_none());
+        assert!(table.metadata().properties().get("team").is_none());
+
+        let tx = Transaction::new(&table);
+        let tx = tx
+            .update_table_properties()
+            .set("owner".to_string(), "iceberg-rust".to_string())
+            .set("team".to_string(), "storage".to_string())
+            .apply(tx)
+            .unwrap();
+
+        let committed = tx.commit(&catalog).await.unwrap();
+
+        // The returned table reflects the commit.
+        assert_eq!(
+            committed.metadata().properties().get("owner"),
+            Some(&"iceberg-rust".to_string())
+        );
+        assert_eq!(
+            committed.metadata().properties().get("team"),
+            Some(&"storage".to_string())
+        );
+
+        // A fresh load from the catalog also sees the properties, confirming
+        // the commit was persisted rather than only mutated in-memory.
+        let reloaded = catalog.load_table(committed.identifier()).await.unwrap();
+        assert_eq!(
+            reloaded.metadata().properties().get("owner"),
+            Some(&"iceberg-rust".to_string())
+        );
+        assert_eq!(
+            reloaded.metadata().properties().get("team"),
+            Some(&"storage".to_string())
+        );
+
+        // The metadata location must have advanced.
+        assert_ne!(
+            committed.metadata_location(),
+            table.metadata_location(),
+            "commit should advance the metadata pointer"
+        );
+    }
+
+    #[tokio::test]
+    async fn test_update_location_commit_round_trip() {
+        let catalog = new_memory_catalog().await;
+        let table = make_v2_minimal_table_in_catalog(&catalog).await;
+
+        let original_location = table.metadata().location().to_string();
+        let new_location = format!("{original_location}/relocated");
+
+        let tx = Transaction::new(&table);
+        let tx = tx
+            .update_location()
+            .set_location(new_location.clone())
+            .apply(tx)
+            .unwrap();
+
+        let committed = tx.commit(&catalog).await.unwrap();
+
+        assert_eq!(committed.metadata().location(), new_location);
+
+        let reloaded = catalog.load_table(committed.identifier()).await.unwrap();
+        assert_eq!(reloaded.metadata().location(), new_location);
+    }
+
+    #[tokio::test]
+    async fn test_chained_actions_single_commit() {
+        // A transaction can carry multiple actions. Committing once should
+        // apply all of them atomically and produce a single updated table.
+        let catalog = new_memory_catalog().await;
+        let table = make_v2_minimal_table_in_catalog(&catalog).await;
+
+        let original_location = table.metadata().location().to_string();
+        let new_location = format!("{original_location}/relocated");
+
+        let tx = Transaction::new(&table);
+        let tx = tx
+            .update_table_properties()
+            .set("owner".to_string(), "iceberg-rust".to_string())
+            .apply(tx)
+            .unwrap();
+        let tx = tx
+            .update_location()
+            .set_location(new_location.clone())
+            .apply(tx)
+            .unwrap();
+
+        let committed = tx.commit(&catalog).await.unwrap();
+
+        assert_eq!(
+            committed.metadata().properties().get("owner"),
+            Some(&"iceberg-rust".to_string())
+        );
+        assert_eq!(committed.metadata().location(), new_location);
+
+        // And the catalog agrees.
+        let reloaded = catalog.load_table(committed.identifier()).await.unwrap();
+        assert_eq!(
+            reloaded.metadata().properties().get("owner"),
+            Some(&"iceberg-rust".to_string())
+        );
+        assert_eq!(reloaded.metadata().location(), new_location);
+    }
+}