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If you set up Rocket Money MFA with one phone number and now you're moving to a new number — new carrier, new device, lost phone, or just switching to an authenticator app instead — the MFA setting needs to change with you. Otherwise the next time MFA re-prompts (about every 45 days per the Help Center), the code goes to a number you can't reach, and you're locked out.

This guide covers two scenarios: the easy one where you still have access to the old number, and the harder one where you've already lost access.

The short version. If you can still receive codes at the old number, sign in to Rocket Money → Profile → Security → MFA → update the phone number → verify the new one with a code. If you've already lost access to the old number, you'll need to go through Rocket Money support's account-recovery path — see the Already lost access section.

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What's in this guide

Best time to update: before you need to

If you know you're switching numbers — new carrier, new phone, moving abroad — update Rocket Money's MFA before you lose access to the old number. The proactive update is much easier than the recovery path.

Specifically: update the day you confirm the new number is active and receiving texts. That way both numbers work briefly, you can verify the new one, and if anything goes wrong you can fall back to the old number.

Phone-number-change tasks worth doing in parallel with the Rocket Money MFA update:

  • Bank apps (Chase, BoA, Wells, etc.)
  • Other financial apps (Robinhood, brokerages, crypto exchanges)
  • Email accounts (Gmail, iCloud, Outlook)
  • Password manager (1Password, Bitwarden, etc.)
  • Streaming services that use SMS verification
  • Healthcare provider portals

Make a list before the carrier transfer; you'll forget half of these otherwise.

Step-by-step: changing your MFA phone number

The standard path, used when you still have access to your old number:

Step 1 — Sign in to Rocket Money with your password (and the current MFA code at the old number, if MFA prompts you).

Step 2 — Open Profile → Security. Find the MFA settings.

Step 3 — Tap "Update phone number" (or the equivalent on your app version — sometimes labeled "Change phone" or shown next to the current registered number).

Step 4 — Enter your new phone number. Include the country code; double-check the digits.

Step 5 — Verify the new number. Rocket Money sends a verification code via SMS (or automated phone call, if you've selected the phone-call method) to the new number. Enter the code in Rocket Money to confirm.

Step 6 — Save. The new number is now your registered MFA destination. The next time MFA prompts you, the code goes to the new number.

Step 7 — Test it. Sign out and sign back in. The MFA prompt should now go to the new number. If it doesn't, your update may not have saved — repeat the steps.

That's the entire flow. Two-minute task; do it the day you transition the number.

Switching from SMS to an authenticator app

If you're using SMS-based MFA and want to switch to an authenticator app (more secure, recommended for users with substantial financial data — see How to Enable MFA on Rocket Money for context), the path is:

  1. Sign in to Rocket Money.
  2. Profile → Security → MFA settings.
  3. Look for Change MFA method or similar.
  4. Pick Authenticator App.
  5. Scan the QR code with Google Authenticator, Microsoft Authenticator, Duo, or your preferred authenticator app.
  6. Enter the current 6-digit code from the app to confirm.
  7. Save.

Once the authenticator app is the active method, MFA codes come from the app instead of SMS. Your phone number is no longer used for MFA codes (though it may still be associated with your account profile).

The downside of switching to authenticator app: if you lose your phone with the authenticator app on it, recovery is harder than with SMS. Most authenticator apps offer cloud backup of your codes (Google Authenticator and Microsoft Authenticator both do); enable that backup before relying on the app, or you'll be in a worse spot than SMS if your phone dies.

Switching numbers soon? Update Rocket Money's MFA the same day your new number activates. Doing it before you lose access to the old one is the easy path; doing it after is the painful one.

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Already lost access

If you've already lost access to the phone number on your MFA — phone is broken, number was ported but you forgot to update Rocket Money first, etc. — the standard update flow won't work because you can't sign in to make the change.

Recovery path:

Step 1 — Try password sign-in first. If you haven't been re-prompted by MFA recently (the cycle is ~45 days), you may still have a valid session. Open the app from a device where you were already signed in. If it works, immediately follow the standard update steps above.

Step 2 — If you can't sign in, go through Rocket Money's account recovery. Contact support via the help center contact form, the website, or any saved support email. State clearly:

  • Your account email address.
  • The fact that you've lost access to the MFA phone number.
  • The new phone number you'd like to register.
  • A verification you own the account (recent transactions, account creation date, etc.).

Rocket Money's support process for MFA recovery includes identity verification — it has to, otherwise the MFA itself would be pointless. Have account-history details ready: when you signed up, what bank accounts are linked, recent transaction amounts, the slider price you chose for Premium (if applicable). The more you can verify, the faster the recovery.

For the broader account-recovery flowchart (lost email + lost MFA, etc.), see Locked Out of Rocket Money? How to Recover Access.

Common questions

Will my phone number still be visible in my Rocket Money profile after I switch to an authenticator app? Possibly — your account-level phone number (used for things like account notifications) may stay configured even after you change your MFA method to an authenticator app. Check Profile → Settings to confirm what's listed.

Can I have two phone numbers registered for MFA at the same time? Per the Help Center, the MFA method is singular — one phone number for SMS, one phone number for automated phone call, or one authenticator app. Not stacked.

What if my new phone number is in a different country? International phone numbers are typically supported by Rocket Money's MFA, but SMS delivery can be unreliable internationally. If you've moved abroad permanently, switching to an authenticator app is more reliable than SMS.

Will updating my MFA phone number log me out? Updating the registered number doesn't force a sign-out. Your existing session continues. The next MFA prompt (about 45 days out) will go to the new number.

Can my Secondary user (account sharing) update their own MFA without my involvement? Yes — each user manages their own MFA. The Secondary updates their phone number through their own profile, independent of the Primary.

What if I never set up MFA in the first place — can I just enable it now with a new number? Yes. See How to Enable Multi-Factor Authentication (MFA) on Rocket Money for the first-time setup flow.

Does this affect my Premium subscription? No. MFA changes are security/account-management actions; they don't touch billing or Premium status.

My old phone is still working but I don't want to use that number for MFA anymore — can I just remove the number entirely? You can change the method to authenticator app (no phone number needed). You can't have MFA enabled with no method at all — it's either SMS, phone call, authenticator app, or off entirely.

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Not financial, legal, or tax advice. We earn a commission if you sign up for Rocket Money through a link on this page; the price is the same. Every claim is verified against Rocket Money's official Help Center documentation and the December 12, 2025 Content Affiliate Talking Points where applicable.