diff --git a/.changeset/tangy-lights-tickle.md b/.changeset/tangy-lights-tickle.md
new file mode 100644
index 0000000000..fe0bdad333
--- /dev/null
+++ b/.changeset/tangy-lights-tickle.md
@@ -0,0 +1,5 @@
+---
+"@effect-app/vue-components": patch
+---
+
+Adds support to nested constructors in OmegaForm defaultsValue with schema
diff --git a/packages/vue-components/__tests__/OmegaForm/WithDefaultConstructorPersistency.test.ts b/packages/vue-components/__tests__/OmegaForm/WithDefaultConstructorPersistency.test.ts
index 6b0ddd20e4..0a9237c331 100644
--- a/packages/vue-components/__tests__/OmegaForm/WithDefaultConstructorPersistency.test.ts
+++ b/packages/vue-components/__tests__/OmegaForm/WithDefaultConstructorPersistency.test.ts
@@ -17,13 +17,12 @@ describe("OmegaForm withDefaultConstructor with persistency", () => {
       third: S.NullOr(S.String).withDefault,
       fourth: S
         .Struct({
-          addForm: S.NullOr(S.String),
-          b: S.PositiveNumber
-        })
-        .pipe(S.withDefaultConstructor(() => ({
-          addForm: null,
-          b: S.PositiveNumber(100)
-        }))),
+          addForm: S.NullOr(S.String).withDefault,
+          b: S.PositiveNumber.pipe(S.withDefaultConstructor(() => S.PositiveNumber(100))),
+          c: S.Struct({
+            d: S.Number.pipe(S.withDefaultConstructor(() => 10))
+          })
+        }),
       fifth: S.Email,
       sixth: S.NumberFromString.pipe(S.withDefaultConstructor(() => 1000))
     })
@@ -33,7 +32,7 @@ describe("OmegaForm withDefaultConstructor with persistency", () => {
     // Format: pathname-key1-key2-key3...
     // Keys from meta will be flattened with dot notation for nested fields
     const pathname = "/test"
-    const keys = ["first", "second", "third", "fourth.addForm", "fourth.b", "fifth", "sixth"]
+    const keys = ["first", "second", "third", "fourth.addForm", "fourth.b", "fourth.c.d", "fifth", "sixth"]
     const persistencyKey = `${pathname}-${keys.join("-")}`
     const queryValue = JSON.stringify({ first: 1234 })
 
@@ -95,7 +94,10 @@ describe("OmegaForm withDefaultConstructor with persistency", () => {
       third: null, // Default from NullOr withDefault
       fourth: {
         addForm: null,
-        b: 100 // Default from withDefaultConstructor
+        b: 100, // Default from withDefaultConstructor
+        c: {
+          d: 10 // Default from withDefaultConstructor
+        }
       },
       sixth: "1000"
     })
diff --git a/packages/vue-components/src/components/OmegaForm/useOmegaForm.ts b/packages/vue-components/src/components/OmegaForm/useOmegaForm.ts
index f3bc868ab1..19a0e7f20f 100644
--- a/packages/vue-components/src/components/OmegaForm/useOmegaForm.ts
+++ b/packages/vue-components/src/components/OmegaForm/useOmegaForm.ts
@@ -706,17 +706,66 @@ export const useOmegaForm = <
     return normalized
   }
 
+  // Helper function to recursively extract default values from schema AST
+  const extractDefaultsFromAST = (schemaObj: any): any => {
+    const result: Record<string, any> = {}
+
+    // Check if this schema has fields (struct)
+    if (schemaObj?.fields && typeof schemaObj.fields === "object") {
+      for (const [key, fieldSchema] of Object.entries(schemaObj.fields)) {
+        // Check if this field has a default value in its AST
+        if ((fieldSchema as any)?.ast?.defaultValue) {
+          try {
+            const defaultValue = (fieldSchema as any).ast.defaultValue()
+            if (defaultValue !== undefined) {
+              result[key] = defaultValue
+            }
+          } catch {
+            // Silently ignore if defaultValue() throws
+          }
+        }
+
+        // Recursively check nested fields for structs
+        const nestedDefaults = extractDefaultsFromAST(fieldSchema as any)
+        if (Object.keys(nestedDefaults).length > 0) {
+          // If we already have a default value for this key, merge with nested
+          if (result[key] && typeof result[key] === "object") {
+            Object.assign(result[key], nestedDefaults)
+          } else if (!result[key]) {
+            // Only set nested defaults if we don't have a default value
+            result[key] = nestedDefaults
+          }
+        }
+      }
+    }
+
+    return result
+  }
+
   // Extract default values from schema constructors (e.g., withDefaultConstructor)
   const extractSchemaDefaults = (defaultValues: Partial<From> = {}) => {
     try {
+      // First try to use schema.make() if available
       // Note: Partial schemas don't have .make() method yet (https://github.com/Effect-TS/effect/issues/4222)
       if ("make" in schema && typeof (schema as any).make === "function") {
-        const decoded = (schema as any).make(defaultValues, { disableValidation: true })
+        const decoded = (schema as any).make(defaultValues)
         return S.encodeSync(schema.pipe(S.partial))(decoded)
       }
     } catch (error) {
-      console.warn("Could not extract schema constructor defaults:", error)
-      return {}
+      // If make() fails, try to extract defaults from AST
+      if (window.location.hostname === "localhost") {
+        console.warn("schema.make() failed, extracting defaults from AST:", error)
+      }
+      try {
+        const astDefaults = extractDefaultsFromAST(schema)
+
+        return S.encodeSync(schema.pipe(S.partial))(astDefaults)
+      } catch (astError) {
+        if (window.location.hostname === "localhost") {
+          console.warn("Could not extract defaults from AST:", astError)
+        }
+        return {}
+      }
     }
   }
 
diff --git a/packages/vue-components/stories/OmegaForm/WithDefaultConstructor.vue b/packages/vue-components/stories/OmegaForm/WithDefaultConstructor.vue
index de102f7599..88afb31482 100644
--- a/packages/vue-components/stories/OmegaForm/WithDefaultConstructor.vue
+++ b/packages/vue-components/stories/OmegaForm/WithDefaultConstructor.vue
@@ -23,13 +23,12 @@ const AddSchema = S.Struct({
   third: S.NullOr(S.String).withDefault,
   fourth: S
     .Struct({
-      addForm: S.NullOr(S.String),
-      b: S.PositiveNumber
-    })
-    .pipe(S.withDefaultConstructor(() => ({
-      addForm: null,
-      b: S.PositiveNumber(100)
-    }))),
+      addForm: S.NullOr(S.String).withDefault,
+      b: S.PositiveNumber.pipe(S.withDefaultConstructor(() => S.PositiveNumber(100))),
+      c: S.Struct({
+        d: S.Number.pipe(S.withDefaultConstructor(() => 10))
+      })
+    }),
   fifth: S.Email,
   sixth: S.NumberFromString.pipe(S.withDefaultConstructor(() => 1000))
 })