diff --git a/packages/form-core/src/FieldApi.ts b/packages/form-core/src/FieldApi.ts
index 925a096e2..ade4c18d6 100644
--- a/packages/form-core/src/FieldApi.ts
+++ b/packages/form-core/src/FieldApi.ts
@@ -187,8 +187,6 @@ export class FieldApi<TData, TFormData> {
   update = (opts: FieldApiOptions<typeof this._tdata, TFormData>) => {
     this.options = {
       asyncDebounceMs: this.form.options.asyncDebounceMs ?? 0,
-      onChangeAsyncDebounceMs: this.form.options.onChangeAsyncDebounceMs ?? 0,
-      onBlurAsyncDebounceMs: this.form.options.onBlurAsyncDebounceMs ?? 0,
       ...opts,
     } as never
 
@@ -334,7 +332,7 @@ export class FieldApi<TData, TFormData> {
             ? onChangeAsyncDebounceMs
             : onBlurAsyncDebounceMs) ??
           asyncDebounceMs ??
-          500
+          0
 
     if (this.state.meta.isValidating !== true)
       this.setMeta((prev) => ({ ...prev, isValidating: true }))
diff --git a/packages/form-core/src/tests/FieldApi.spec.ts b/packages/form-core/src/tests/FieldApi.spec.ts
index 7869446e4..c23a3eee7 100644
--- a/packages/form-core/src/tests/FieldApi.spec.ts
+++ b/packages/form-core/src/tests/FieldApi.spec.ts
@@ -2,6 +2,7 @@ import { expect } from 'vitest'
 
 import { FormApi } from '../FormApi'
 import { FieldApi } from '../FieldApi'
+import { sleep } from './utils'
 
 describe('field api', () => {
   it('should have an initial value', () => {
@@ -151,7 +152,30 @@ describe('field api', () => {
     expect(subfield.getValue()).toBe('one')
   })
 
-  it('should run validation onChange', async () => {
+  it('should not throw errors when no meta info is stored on a field and a form re-renders', async () => {
+    const form = new FormApi({
+      defaultValues: {
+        name: 'test',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+    })
+
+    field.mount()
+
+    expect(() =>
+      form.update({
+        defaultValues: {
+          name: 'other',
+        },
+      }),
+    ).not.toThrow()
+  })
+
+  it('should run validation onChange', () => {
     const form = new FormApi({
       defaultValues: {
         name: 'test',
@@ -162,10 +186,33 @@ describe('field api', () => {
       form,
       name: 'name',
       onChange: (value) => {
-        if (value === 'other') {
-          return 'Please enter a different value'
-        }
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
+    })
+
+    field.mount()
+
+    expect(field.getMeta().error).toBeUndefined()
+    field.setValue('other', { touch: true })
+    expect(field.getMeta().error).toBe('Please enter a different value')
+  })
+
+  it('should run async validation onChange', async () => {
+    vi.useFakeTimers()
 
+    const form = new FormApi({
+      defaultValues: {
+        name: 'test',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+      onChangeAsync: async (value) => {
+        await sleep(1000)
+        if (value === 'other') return 'Please enter a different value'
         return
       },
     })
@@ -174,10 +221,14 @@ describe('field api', () => {
 
     expect(field.getMeta().error).toBeUndefined()
     field.setValue('other', { touch: true })
+    await vi.runAllTimersAsync()
     expect(field.getMeta().error).toBe('Please enter a different value')
   })
 
-  it('should not throw errors when no meta info is stored on a field and a form re-renders', async () => {
+  it('should run async validation onChange with debounce', async () => {
+    vi.useFakeTimers()
+    const sleepMock = vi.fn().mockImplementation(sleep)
+
     const form = new FormApi({
       defaultValues: {
         name: 'test',
@@ -187,16 +238,199 @@ describe('field api', () => {
     const field = new FieldApi({
       form,
       name: 'name',
+      onChangeAsyncDebounceMs: 1000,
+      onChangeAsync: async (value) => {
+        await sleepMock(1000)
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
     })
 
     field.mount()
 
-    expect(() =>
-      form.update({
-        defaultValues: {
-          name: 'other',
-        },
-      }),
-    ).not.toThrow()
+    expect(field.getMeta().error).toBeUndefined()
+    field.setValue('other', { touch: true })
+    field.setValue('other')
+    await vi.runAllTimersAsync()
+    // sleepMock will have been called 2 times without onChangeAsyncDebounceMs
+    expect(sleepMock).toHaveBeenCalledTimes(1)
+    expect(field.getMeta().error).toBe('Please enter a different value')
+  })
+
+  it('should run async validation onChange with asyncDebounceMs', async () => {
+    vi.useFakeTimers()
+    const sleepMock = vi.fn().mockImplementation(sleep)
+
+    const form = new FormApi({
+      defaultValues: {
+        name: 'test',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+      asyncDebounceMs: 1000,
+      onChangeAsync: async (value) => {
+        await sleepMock(1000)
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
+    })
+
+    field.mount()
+
+    expect(field.getMeta().error).toBeUndefined()
+    field.setValue('other', { touch: true })
+    field.setValue('other')
+    await vi.runAllTimersAsync()
+    // sleepMock will have been called 2 times without asyncDebounceMs
+    expect(sleepMock).toHaveBeenCalledTimes(1)
+    expect(field.getMeta().error).toBe('Please enter a different value')
+  })
+
+  it('should run validation onBlur', () => {
+    const form = new FormApi({
+      defaultValues: {
+        name: 'other',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+      onBlur: (value) => {
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
+    })
+
+    field.mount()
+
+    field.setValue('other', { touch: true })
+    field.validate('blur')
+    expect(field.getMeta().error).toBe('Please enter a different value')
+  })
+
+  it('should run async validation onBlur', async () => {
+    vi.useFakeTimers()
+
+    const form = new FormApi({
+      defaultValues: {
+        name: 'test',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+      onBlurAsync: async (value) => {
+        await sleep(1000)
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
+    })
+
+    field.mount()
+
+    expect(field.getMeta().error).toBeUndefined()
+    field.setValue('other', { touch: true })
+    field.validate('blur')
+    await vi.runAllTimersAsync()
+    expect(field.getMeta().error).toBe('Please enter a different value')
+  })
+
+  it('should run async validation onBlur with debounce', async () => {
+    vi.useFakeTimers()
+    const sleepMock = vi.fn().mockImplementation(sleep)
+
+    const form = new FormApi({
+      defaultValues: {
+        name: 'test',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+      onBlurAsyncDebounceMs: 1000,
+      onBlurAsync: async (value) => {
+        await sleepMock(10)
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
+    })
+
+    field.mount()
+
+    expect(field.getMeta().error).toBeUndefined()
+    field.setValue('other', { touch: true })
+    field.validate('blur')
+    field.validate('blur')
+    await vi.runAllTimersAsync()
+    // sleepMock will have been called 2 times without onBlurAsyncDebounceMs
+    expect(sleepMock).toHaveBeenCalledTimes(1)
+    expect(field.getMeta().error).toBe('Please enter a different value')
+  })
+
+  it('should run async validation onBlur with asyncDebounceMs', async () => {
+    vi.useFakeTimers()
+    const sleepMock = vi.fn().mockImplementation(sleep)
+
+    const form = new FormApi({
+      defaultValues: {
+        name: 'test',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+      asyncDebounceMs: 1000,
+      onBlurAsync: async (value) => {
+        await sleepMock(10)
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
+    })
+
+    field.mount()
+
+    expect(field.getMeta().error).toBeUndefined()
+    field.setValue('other', { touch: true })
+    field.validate('blur')
+    field.validate('blur')
+    await vi.runAllTimersAsync()
+    // sleepMock will have been called 2 times without asyncDebounceMs
+    expect(sleepMock).toHaveBeenCalledTimes(1)
+    expect(field.getMeta().error).toBe('Please enter a different value')
+  })
+
+  it('should run async validation onSubmit', async () => {
+    vi.useFakeTimers()
+
+    const form = new FormApi({
+      defaultValues: {
+        name: 'test',
+      },
+    })
+
+    const field = new FieldApi({
+      form,
+      name: 'name',
+      onSubmitAsync: async (value) => {
+        await sleep(1000)
+        if (value === 'other') return 'Please enter a different value'
+        return
+      },
+    })
+
+    field.mount()
+
+    expect(field.getMeta().error).toBeUndefined()
+    field.setValue('other', { touch: true })
+    field.validate('submit')
+    await vi.runAllTimersAsync()
+    expect(field.getMeta().error).toBe('Please enter a different value')
   })
 })
diff --git a/packages/form-core/src/tests/utils.ts b/packages/form-core/src/tests/utils.ts
new file mode 100644
index 000000000..1a3a619a2
--- /dev/null
+++ b/packages/form-core/src/tests/utils.ts
@@ -0,0 +1,5 @@
+export function sleep(timeout: number): Promise<void> {
+  return new Promise((resolve, _reject) => {
+    setTimeout(resolve, timeout)
+  })
+}