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Quick answer: If you still have a Capital One Walmart Rewards Card or Walmart Rewards Card, Capital One is replacing it with a Capital One Quicksilver Mastercard. Activate your new Quicksilver card at capitalone.com/activate, in the Capital One mobile app, or by calling the number on the card’s sticker. New Walmart credit cards starting in 2025 are issued by Synchrony through OnePay, not Capital One. This page explains the activation steps for existing Capital One Walmart cardholders and what to do if you are unsure who issued your card.
Activate Your Card →

Opens the official Capital One website (capitalone.com).

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Who Issues Your Walmart Card?

The issuer on your card determines where you activate it.
  • Capital One Walmart Rewards Card or Walmart Rewards Card: Capital One issued these cards through a partnership that ended in May 2024. Existing cardholders are receiving a Capital One Quicksilver Mastercard as a replacement. Activate this replacement through Capital One.
  • New Walmart credit cards from 2025 onward: Walmart’s OnePay fintech has partnered with Synchrony to issue new Walmart credit cards. If you applied for a Walmart card recently and your card shows Synchrony or OnePay as the issuer, activate it through the channel provided with your new card materials.
Always check the name printed on your card and the activation instructions that came with it.

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How to Activate a Capital One Walmart Replacement Card

Your replacement Quicksilver card arrives with an activation sticker. Have the card in front of you before you start.
  1. Type capitalone.com/activate into your browser’s address bar. Typing it yourself is safer than clicking a link.
  2. Sign in with your Capital One username and password.
  3. If you do not have an online account, enroll in Capital One online banking during the activation process.
  4. If you already have a Capital One account, link the new Quicksilver card to your username when prompted.
  5. Enter the 3-digit security code from the back of your new card.
  6. Confirm activation. Your card should be ready to use immediately.
You can also activate from your Capital One online dashboard by selecting I Want to…, then under Account Settings, choosing Activate Card.

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How to Activate Using the Capital One Mobile App

  1. Download the official Capital One Mobile app from the Apple App Store or Google Play.
  2. Sign in, or enroll if you are new.
  3. Tap Profile.
  4. Tap Account & Feature Settings.
  5. Tap Activate a Credit Card.
  6. Enter the 3-digit security code from the back of your card and follow the prompts.

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How to Activate by Phone

Call the phone number printed on the removable adhesive strip attached to your new card and follow the automated instructions. If you miss a step, hang up and call the same number again.

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What to Do After Activating Your Replacement Card

  • Destroy your old Capital One Walmart Rewards Card or Walmart Rewards Card securely. Cut plastic cards through the chip and magnetic strip.
  • Update your card information with any merchants that bill you on a recurring basis. Some merchants update automatically, but not all do.
  • Add your new Quicksilver card to digital wallets like Apple Pay or Google Pay if you use them.
See What to Do After Activating a Replacement Card for the full checklist.

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Frequently Asked Questions

You can use your old card until you activate the new Quicksilver card. Once the new card is active, destroy the old one and use the Quicksilver card going forward.
Capital One and Walmart ended their card partnership in 2024. Capital One is replacing eligible Capital One Walmart cards with the Quicksilver Mastercard.
New Walmart credit cards launched in 2025 are issued by Synchrony through Walmart’s OnePay. If your card says Synchrony or OnePay, follow the activation instructions that came with your card rather than Capital One’s process.
It is printed on the back of your card, near the signature line if your card has one.
Link the new card to your existing Capital One username when prompted during activation. If you still do not see it, sign out and back in, or contact Capital One through the number on the back of your card.

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Summary

Existing Capital One Walmart cardholders should activate their replacement Quicksilver Mastercard through Capital One at capitalone.com/activate, in the Capital One mobile app, or by phone. New Walmart credit cards are now issued by Synchrony through OnePay, so always check the issuer name printed on your card before you start. Use official channels only, and type the web address yourself to stay safe. For general activation steps, see Capitalone.com/activate Guide. To learn how to protect yourself from fake sites, read Avoid Activation Scams.

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Disclaimer

Independent blog for knowledge purposes only. Not affiliated with, endorsed by, or operated by Capital One or Walmart. Steps are based on Capital One’s public website and may change. Always follow the instructions on the official capitalone.com site or app.