diff --git a/packages/browser/src/client.ts b/packages/browser/src/client.ts
index 261ceba0a88e..2eeefc18c7ed 100644
--- a/packages/browser/src/client.ts
+++ b/packages/browser/src/client.ts
@@ -13,6 +13,7 @@ import { eventFromException, eventFromMessage } from './eventbuilder';
 import { IS_DEBUG_BUILD } from './flags';
 import { Breadcrumbs } from './integrations';
 import { BREADCRUMB_INTEGRATION_ID } from './integrations/breadcrumbs';
+import { BrowserTransportOptions } from './transports/types';
 import { sendReport } from './transports/utils';
 
 const globalObject = getGlobalObject<Window>();
@@ -37,13 +38,13 @@ export interface BaseBrowserOptions {
  * Configuration options for the Sentry Browser SDK.
  * @see @sentry/types Options for more information.
  */
-export interface BrowserOptions extends Options, BaseBrowserOptions {}
+export interface BrowserOptions extends Options<BrowserTransportOptions>, BaseBrowserOptions {}
 
 /**
  * Configuration options for the Sentry Browser SDK Client class
  * @see BrowserClient for more information.
  */
-export interface BrowserClientOptions extends ClientOptions, BaseBrowserOptions {}
+export interface BrowserClientOptions extends ClientOptions<BrowserTransportOptions>, BaseBrowserOptions {}
 
 /**
  * The Sentry Browser SDK Client.
diff --git a/packages/browser/src/transports/fetch.ts b/packages/browser/src/transports/fetch.ts
index d6f44090abb9..d4e57e59862e 100644
--- a/packages/browser/src/transports/fetch.ts
+++ b/packages/browser/src/transports/fetch.ts
@@ -1,17 +1,14 @@
 import { createTransport } from '@sentry/core';
-import { BaseTransportOptions, Transport, TransportMakeRequestResponse, TransportRequest } from '@sentry/types';
+import { Transport, TransportMakeRequestResponse, TransportRequest } from '@sentry/types';
 
+import { BrowserTransportOptions } from './types';
 import { FetchImpl, getNativeFetchImplementation } from './utils';
 
-export interface FetchTransportOptions extends BaseTransportOptions {
-  requestOptions?: RequestInit;
-}
-
 /**
  * Creates a Transport that uses the Fetch API to send events to Sentry.
  */
 export function makeFetchTransport(
-  options: FetchTransportOptions,
+  options: BrowserTransportOptions,
   nativeFetch: FetchImpl = getNativeFetchImplementation(),
 ): Transport {
   function makeRequest(request: TransportRequest): PromiseLike<TransportMakeRequestResponse> {
@@ -19,7 +16,8 @@ export function makeFetchTransport(
       body: request.body,
       method: 'POST',
       referrerPolicy: 'origin',
-      ...options.requestOptions,
+      headers: options.headers,
+      ...options.fetchOptions,
     };
 
     return nativeFetch(options.url, requestOptions).then(response => ({
diff --git a/packages/browser/src/transports/types.ts b/packages/browser/src/transports/types.ts
new file mode 100644
index 000000000000..4f4b7ef2c98a
--- /dev/null
+++ b/packages/browser/src/transports/types.ts
@@ -0,0 +1,8 @@
+import { BaseTransportOptions } from '@sentry/types';
+
+export interface BrowserTransportOptions extends BaseTransportOptions {
+  /** Fetch API init parameters. Used by the FetchTransport */
+  fetchOptions?: RequestInit;
+  /** Custom headers for the transport. Used by the XHRTransport and FetchTransport */
+  headers?: { [key: string]: string };
+}
diff --git a/packages/browser/src/transports/xhr.ts b/packages/browser/src/transports/xhr.ts
index 4c4982225b85..9a8b10c6187d 100644
--- a/packages/browser/src/transports/xhr.ts
+++ b/packages/browser/src/transports/xhr.ts
@@ -1,7 +1,9 @@
 import { createTransport } from '@sentry/core';
-import { BaseTransportOptions, Transport, TransportMakeRequestResponse, TransportRequest } from '@sentry/types';
+import { Transport, TransportMakeRequestResponse, TransportRequest } from '@sentry/types';
 import { SyncPromise } from '@sentry/utils';
 
+import { BrowserTransportOptions } from './types';
+
 /**
  * The DONE ready state for XmlHttpRequest
  *
@@ -12,14 +14,10 @@ import { SyncPromise } from '@sentry/utils';
  */
 const XHR_READYSTATE_DONE = 4;
 
-export interface XHRTransportOptions extends BaseTransportOptions {
-  headers?: { [key: string]: string };
-}
-
 /**
  * Creates a Transport that uses the XMLHttpRequest API to send events to Sentry.
  */
-export function makeXHRTransport(options: XHRTransportOptions): Transport {
+export function makeXHRTransport(options: BrowserTransportOptions): Transport {
   function makeRequest(request: TransportRequest): PromiseLike<TransportMakeRequestResponse> {
     return new SyncPromise((resolve, reject) => {
       const xhr = new XMLHttpRequest();
diff --git a/packages/browser/test/unit/transports/fetch.test.ts b/packages/browser/test/unit/transports/fetch.test.ts
index 63fe62814628..4684b87fdf8b 100644
--- a/packages/browser/test/unit/transports/fetch.test.ts
+++ b/packages/browser/test/unit/transports/fetch.test.ts
@@ -1,10 +1,11 @@
 import { EventEnvelope, EventItem } from '@sentry/types';
 import { createEnvelope, serializeEnvelope } from '@sentry/utils';
 
-import { FetchTransportOptions, makeFetchTransport } from '../../../src/transports/fetch';
+import { makeFetchTransport } from '../../../src/transports/fetch';
+import { BrowserTransportOptions } from '../../../src/transports/types';
 import { FetchImpl } from '../../../src/transports/utils';
 
-const DEFAULT_FETCH_TRANSPORT_OPTIONS: FetchTransportOptions = {
+const DEFAULT_FETCH_TRANSPORT_OPTIONS: BrowserTransportOptions = {
   url: 'https://sentry.io/api/42/store/?sentry_key=123&sentry_version=7',
   recordDroppedEvent: () => undefined,
 };
@@ -83,7 +84,7 @@ describe('NewFetchTransport', () => {
     };
 
     const transport = makeFetchTransport(
-      { ...DEFAULT_FETCH_TRANSPORT_OPTIONS, requestOptions: REQUEST_OPTIONS },
+      { ...DEFAULT_FETCH_TRANSPORT_OPTIONS, fetchOptions: REQUEST_OPTIONS },
       mockFetch,
     );
 
diff --git a/packages/browser/test/unit/transports/xhr.test.ts b/packages/browser/test/unit/transports/xhr.test.ts
index 35ca842db3d1..15a5c7ce3d62 100644
--- a/packages/browser/test/unit/transports/xhr.test.ts
+++ b/packages/browser/test/unit/transports/xhr.test.ts
@@ -1,9 +1,10 @@
 import { EventEnvelope, EventItem } from '@sentry/types';
 import { createEnvelope, serializeEnvelope } from '@sentry/utils';
 
-import { makeXHRTransport, XHRTransportOptions } from '../../../src/transports/xhr';
+import { BrowserTransportOptions } from '../../../src/transports/types';
+import { makeXHRTransport } from '../../../src/transports/xhr';
 
-const DEFAULT_XHR_TRANSPORT_OPTIONS: XHRTransportOptions = {
+const DEFAULT_XHR_TRANSPORT_OPTIONS: BrowserTransportOptions = {
   url: 'https://sentry.io/api/42/store/?sentry_key=123&sentry_version=7',
   recordDroppedEvent: () => undefined,
 };
@@ -82,7 +83,7 @@ describe('NewXHRTransport', () => {
       keepalive: 'true',
       referrer: 'http://example.org',
     };
-    const options: XHRTransportOptions = {
+    const options: BrowserTransportOptions = {
       ...DEFAULT_XHR_TRANSPORT_OPTIONS,
       headers,
     };