Interactive Brokers uses one username and password for everything — Client Portal, Trader Workstation, IBKR Desktop, and IBKR Mobile — but there’s a critical extra layer: mandatory two-factor authentication (2FA) through an app called IB Key. IB Key is built into the IBKR Mobile app, which means the same app you use to trade on your phone is also your login authenticator for every other platform and the controller of your daily withdrawal limits. Setting it up correctly on day one saves you from the most common IBKR login frustration: getting locked out of everything when you switch phones.

This guide covers how to log in step by step, how to set up IB Key (and why it matters beyond just login), how to recover your credentials, and the most common login problems and their fixes. If you’ve already hit a wall trying to log in, skip to the Common Problems section.

Where to Log In: IBKR’s Four Platforms

Interactive Brokers has four platforms that all use the same login credentials. Unlike retail brokers where “login” means going to one website, IBKR offers multiple entry points depending on how you want to interact with your account. Every platform uses your IBKR username, password, and IB Key 2FA — there are no separate passwords for different platforms.

How to Log In to Interactive Brokers

Logging into IBKR takes about 30 seconds once IB Key is set up. The process is the same regardless of which platform you’re using: enter your username and password, then approve the login on your phone via IB Key. Here’s the step-by-step for Client Portal (the most common starting point for new users).

1. Go to interactivebrokers.com and click “Log In” → “Portal Login”. Or navigate directly to portal.interactivebrokers.com.
2. Enter your IBKR username and password. Your username was assigned during account opening (format: typically a short alphanumeric string). Your password is the one you chose during registration.
3. Approve the login on your phone. If IB Key is set up, you’ll receive a push notification on your phone. Open the IBKR Mobile app and tap “Approve” (or enter your IB Key PIN/biometric). If you use a Mobile Authenticator App (TOTP) instead, enter the 6-digit code displayed in your authenticator.
4. You’re in. Client Portal loads with your portfolio overview, balances, and account management options.

For TWS and IBKR Desktop, the process is identical — launch the app, enter username and password, approve on IB Key. For IBKR Mobile itself, you log in with username and password, then authenticate with your PIN, fingerprint, or face ID (since IB Key is built into the same app).

IB Key: Why Your Authenticator Is Your Most Important Tool

IB Key is IBKR’s two-factor authentication system, and it does far more than just secure your login. Unlike most brokers where 2FA is a simple SMS code or a standalone authenticator app, IB Key is embedded inside the IBKR Mobile trading app. This means one app serves three functions simultaneously: it’s your mobile trading platform, your login authenticator for all other platforms, and the key that determines your daily withdrawal limit.

How to Set Up IB Key

1. Download IBKR Mobile from the App Store (iOS) or Google Play (Android). Search for “IBKR Mobile” or “Interactive Brokers”.
2. Open the app and log in with your IBKR username and password. If this is your first login, you’ll authenticate via SMS (a temporary code sent to the phone number you registered during account opening).
3. Navigate to IB Key activation. The app may prompt you automatically, or go to Settings → Security → Activate IB Key.
4. Set your IB Key PIN or enable biometrics. Choose a PIN you’ll remember, or enable fingerprint/face recognition. This PIN is used every time you approve a login from another platform.
5. Test the setup. Open Client Portal on a separate device (laptop or desktop), log in with your username and password. You should receive a push notification on IBKR Mobile asking you to approve the login. Tap approve and confirm it works.

Forgot Your Password or Username

IBKR provides a self-service credential recovery portal for forgotten passwords and usernames. You can access it from the “Need Help?” or “Problem logging in?” link on any IBKR login page, or directly at ndcdyn.interactivebrokers.com/credential.recovery/login-help.

Password Reset

Click “Forgot Password” on the login page. IBKR will ask for your username and send a verification code to your registered email or phone number. Enter the code, create a new password, and you’re back in. If you also have IB Key active, you may need to approve the reset on your phone.

Username Recovery

Click “Forgot Username” on the login page. IBKR will ask for identifying information (email address, account number) and send your username to your registered email. Usernames cannot be changed — the one assigned during account opening is permanent.

Account Locked After Too Many Attempts

IBKR automatically locks accounts after multiple failed login attempts. This is a security measure, not a malfunction. Wait 15–30 minutes and try again with the correct credentials. If you’re still locked out, use the “Need Help?” portal or call Client Services. Note: IBKR cannot unlock accounts or reset passwords via email or live chat — a phone call is required for security-sensitive actions.

Switching Phones: How to Migrate IB Key Without Getting Locked Out

The single most common IBKR login disaster is switching to a new phone without migrating IB Key first. Because IB Key is embedded in the IBKR Mobile app — and tied to the specific device it was activated on — getting a new phone means your old authenticator stops working. If you didn’t prepare in advance, you’re locked out of every IBKR platform until Client Services restores your access.

If You Still Have Your Old Phone

1. Download IBKR Mobile on your new phone and log in with your username and password.
2. Start the IB Key activation process on the new phone. IBKR will send a verification notification to your old phone’s IB Key.
3. Approve the transfer on your old phone. This deactivates IB Key on the old device and activates it on the new one.
4. Test the new setup by logging into Client Portal from a desktop browser. Confirm you receive the IB Key notification on the new phone.

If You No Longer Have Your Old Phone

This is where it gets difficult. Without the old phone, you cannot approve the IB Key transfer. Your options:

1. Try the Temporary Security Code Card. If you previously printed one from Client Portal (Settings → Security → Secure Login System), you can use it to log in and reactivate IB Key on your new device. The card is valid for 21 days from printing.
2. Call IBKR Client Services. This is the most common path. Call the support number for your region, verify your identity (expect security questions and possibly document requests), and request a temporary security code. The temporary code is valid for 48 hours — enough time to set up IB Key on your new phone.

Is My IBKR Account Safe?

Yes — IBKR’s login security is among the strongest of any retail broker. The mandatory 2FA means that even if someone obtains your username and password, they cannot access your account without physical possession of your phone (or your authenticator device). This is the same level of protection that online banking uses, and it’s a significant step above brokers that rely solely on email and password.

IBKR’s security architecture includes: mandatory two-factor authentication for all accounts, encrypted sessions across all platforms, automatic session timeout on inactivity, single-session limits to prevent concurrent unauthorized access, and withdrawal limits tied to authentication strength. Your account is also protected by regulatory safeguards — SIPC protection up to $500,000 (US), FCA regulation (UK), and segregated client accounts across all entities.

The trade-off for this security is complexity. IBKR’s login system has more moving parts than a retail broker — and when one of those parts breaks (a lost phone, a changed number, an expired security card), the recovery process is slower and more involved. The security is real, but it demands that you maintain your authentication setup proactively.

Common Login Problems and How to Fix Them

Most IBKR login problems fall into four categories: wrong credentials, 2FA failures, session conflicts, and browser issues. Here’s how to diagnose and fix each one.

1. “Invalid Username or Password”

The most common error. IBKR usernames are case-sensitive and were assigned during account opening — they are not your email address. If you’ve forgotten your username, use the “Forgot Username” link on the login page. For passwords, use “Forgot Password.” If you’ve recently changed your password and can’t remember the new one, you’ll need to reset again.

2. IB Key Notification Not Arriving

You entered your credentials but the push notification never appears on your phone. Check four things: is your phone connected to the internet? Are notifications enabled for the IBKR Mobile app? Is your phone’s clock set to automatic (time sync issues can break TOTP codes)? Is the IBKR Mobile app updated to the latest version? If all four are fine and you still don’t receive the notification, try opening the IBKR Mobile app manually — sometimes the notification doesn’t push but the approval prompt is waiting inside the app.

3. “Another Session Already Exists”

This means you (or someone else) already has an active trading session on another device. IBKR allows only one trading session at a time. You’ll be asked whether to disconnect the existing session. Click “OK” to take over, or “Cancel” to leave the other session active. If you didn’t initiate the other session, this could indicate unauthorized access — change your password immediately and contact Client Services.

4. “403 Access Denied” Error

This is typically a browser or network issue, not an account problem. Clear your browser cache and cookies, try a different browser (Chrome, Firefox, Edge), or try a different network (switch from Wi-Fi to mobile data or vice versa). VPN connections can also trigger this error — try disconnecting your VPN. If the error persists across all browsers and networks, contact Client Services.

5. Account Locked After Failed Attempts

IBKR locks accounts after multiple failed login attempts as a security measure. Wait 15–30 minutes, then try again carefully. If you’re still locked out, use the credential recovery portal or call Client Services. Do not keep trying incorrect credentials — each failed attempt extends the lockout.

6. Cannot Log In After Switching Phones

See the Switching Phones section above. If you no longer have your old phone and didn’t print a Temporary Security Code Card, call IBKR Client Services to request a temporary code. Have your account number and identifying information ready.

Conclusion

Interactive Brokers’ login system is more secure and more complex than any retail broker’s. The same credentials work across all four platforms (Client Portal, TWS, IBKR Desktop, IBKR Mobile), and mandatory two-factor authentication through IB Key keeps your account protected. The unique aspect of IBKR’s system is that IB Key isn’t just a login tool — it also controls your daily withdrawal limit, making it a financial access control that you should set up on day one.

The essential setup checklist for new IBKR users:

1. Download IBKR Mobile and activate IB Key immediately. This raises your daily withdrawal limit from $50K to $1M and gives you push-notification login across all platforms.
2. Print a Temporary Security Code Card. Go to Client Portal → Settings → Security → Secure Login System. Print the card and store it somewhere safe. This is your backup if you ever lose your phone.
3. Bookmark the credential recovery URL. Save ndcdyn.interactivebrokers.com/credential.recovery/login-help — you’ll need it if you forget your password and can’t find the “Need Help?” link.
4. Keep your phone number and email current. Go to Account Settings and verify your contact details. If either changes, update immediately — before you need to use them for recovery.
5. Consider a TOTP authenticator as a backup. Setting up a separate authenticator app (Google Authenticator, Authy) in addition to IB Key gives you a fallback that isn’t tied to a single device.

For details on how to fund your IBKR account — including the native Wise integration that can save you on transfer costs — see our IBKR deposit guide. For how to withdraw and understand the hold periods and limits that your login security controls, read our IBKR withdrawal guide. For a full assessment of Interactive Brokers, see our Interactive Brokers review.

Frequently Asked Questions