Where to find the payment method section on Underdog

Log into your Underdog account and go to your account settings. Look for a section labeled "Payment Methods" or "Billing" — the exact name depends on which Underdog product you use (their daily fantasy sports platform, their sportsbook, or their betting app). Once you're there, you'll see a button or link that says "Add Payment Method" or "Add Card".

If you're on mobile, tap the menu icon (usually three horizontal lines) in the top corner, then scroll down to find account or settings. Desktop users will typically find the link in the top right corner near their username or profile icon.

Key Takeaways

  • Payment methods are added through your account settings under a "Payment Methods" or "Billing" section, accessible from your profile menu.
  • Underdog accepts debit cards, credit cards, and sometimes digital wallets like PayPal or Apple Pay, depending on your state and the specific product.
  • You'll need your card number, expiration date, CVV (the three-digit code on the back), and billing zip code to add a card.
  • Once added, a payment method stays on file until you remove it, and you can set one as your default for faster transactions.
  • If a card is declined, check that the zip code matches your card issuer's records and that your card hasn't expired or been flagged for fraud.

What payment types Underdog accepts

Underdog accepts debit cards and credit cards from Visa, Mastercard, American Express, and Discover. Some states and account types also support digital wallets like PayPal, Apple Pay, or Google Pay, which add an extra layer between your bank account and Underdog.

The payment methods available to you depend on your state's regulations around sports betting and fantasy sports. If you don't see a payment option you expected, it's likely restricted in your location. Bank transfers and ACH payments are not typically offered through Underdog's standard payment flow, though some states may have different options during account setup.

Step-by-step: adding a card or digital wallet

After you click "Add Payment Method," you'll be asked to choose the type: card or digital wallet. If you choose card, enter your full card number, the expiration date (month and year), and the CVV — that's the three-digit security code on the back of your card (or four digits if you're using American Express). You'll also need your billing zip code.

For digital wallets, you'll be redirected to that service's login page (PayPal, Apple, or Google). Sign in there, and the wallet will confirm the transaction with Underdog. You won't enter your card details directly into Underdog; the wallet handles that part. Once confirmed, the wallet appears in your payment methods list.

After you add the card or wallet, Underdog may run a small verification charge (usually under $1) to confirm the card is real and active. Check your card statement in a few days — the charge will either drop off or be refunded automatically. Some cards show this as "pending" and clear it within a week.

Setting a default payment method

Once you've added at least one payment method, you can set it as your default. This means it will be pre-selected the next time you deposit or place a bet, saving you a step. To change your default, go back to your Payment Methods section, find the card or wallet you want to use, and look for an option that says "Set as Default" or a radio button to select it.

You can change your default payment method at any time. If you remove the card that's currently set as default, Underdog will automatically assign the next card on your list as the new default.

Troubleshooting a declined card

If your card is declined when you try to add it, the most common reasons are a mismatched zip code, an expired card, or a fraud flag from your bank. Start by double-checking that the zip code you entered matches the one your card issuer has on file — this is the zip code for your billing address, not your current address if they're different.

If the zip code is correct, contact your card issuer directly. Tell them you're trying to add the card to Underdog and ask if they've flagged the transaction as suspicious. Many banks block online gambling or fantasy sports transactions by default; your issuer can temporarily lift that block or whitelist Underdog's merchant code. Once your bank approves it, try adding the card again.

If you're using a prepaid card, some issuers don't allow online gambling transactions at all. In that case, try a different card or a digital wallet instead.

Removing or updating a payment method

To remove a card, go to your Payment Methods section, find the card you want to delete, and look for a "Remove," "Delete," or trash icon. Click it, and Underdog will ask you to confirm. Once removed, that card is no longer on file and won't appear in your payment list.

To update a card — for example, if your card number changed but the issuer is the same — remove the old card and add the new one. Underdog doesn't have an "edit" function for existing cards; you have to delete and re-add. If your card expired but you're keeping the same account, you'll need to add the new card with the updated expiration date.

Security and privacy when adding payment information

Underdog uses encryption to protect your card details, meaning the information is scrambled in transit and at rest. Your full card number is not stored on Underdog's servers in a readable form; instead, they store a token — a unique identifier that lets them process charges without keeping the actual number.

Never share your CVV, expiration date, or full card number with anyone claiming to represent Underdog. Underdog staff will never ask for these details via email, phone, or chat. If someone contacts you asking for this information, it's a scam.

Frequently Asked Questions

Can I add more than one payment method?

Yes. You can add multiple cards and digital wallets to your account. This is useful if one card is declined or if you want to use different cards for different purposes. Set whichever one you use most often as your default.

What happens if I add a card but don't use it?

Nothing. A card on file is not charged unless you actively use it to deposit money or place a bet. You can keep it there indefinitely, and it won't incur fees just for being stored.

Can I use someone else's card to fund my account?

Underdog's terms of service require that the card belong to the account holder. Using someone else's card can result in account suspension or closure. If you need to fund your account and don't have a card, ask the cardholder to add their card to their own account and transfer funds to you outside of Underdog.

Why is there a small charge on my card after I add it?

Underdog (and most payment processors) run a verification charge of less than $1 to confirm the card is active and belongs to you. This charge is temporary and will be refunded or will drop off within a few days. It's not a fee.

What should I do if my card is lost or stolen?

Contact your card issuer when ready to report it. Once they issue a replacement card with a new number, come back to Underdog, remove the old card from your payment methods, and add the new one. Your account itself is not compromised — only the card needs to be updated.