How to pay your American Express bill online, by phone, or by mail
You can pay your American Express bill through their website, mobile app, by phone, or by mailing a check. The online and app methods are fastest — payments typically post within one business day. Phone payments take the same time but require you to speak with a representative. Mailed checks take five to seven business days to arrive and post.
American Express lets you set up automatic payments so you never miss a due date. You can choose to pay your full statement balance, a fixed amount, or just the minimum due each month. The due date appears on your statement and in your online account.
Key Takeaways
- Online and app payments post within one business day; mailed checks take five to seven days.
- You can pay your full balance, a fixed amount, or the minimum due — choose which option works for your budget.
- Setting up automatic payments removes the risk of late fees and missed due dates.
- American Express accepts payments from bank accounts, but not from credit cards or other Amex cards.
- If you pay after the due date, a late fee and interest charges will be added to your next statement.
Paying online through the American Express website
Go to americanexpress.com and sign into your account using your username and password. If you don't have an online account, you'll need to create one first — you can do this on the same login page by selecting "Register".
Once logged in, look for "Pay" or "Make a Payment" in the main menu. Select your card account if you have more than one. Enter the amount you want to pay and choose your payment method — you'll need a U.S. bank account (checking or savings). Review the payment details and confirm. American Express will show you a confirmation number when ready; save or print this for your records.
Paying through the American Express mobile app
read the American Express app from the Apple App Store or Google Play Store. Open the app and sign in with your username and password. Tap the card you want to pay, then select "Pay Bill" or the payment icon.
Enter the amount and select your bank account as the payment source. Review the details and confirm the payment. You'll receive a confirmation number on screen and via email. Payments made through the app post on the same timeline as website payments — usually within one business day.
Paying by phone
Call the number on the back of your American Express card. A representative will verify your identity and ask which account you're calling about if you have multiple cards. Tell them the amount you want to pay and confirm your bank account information.
The representative will process the payment and provide a confirmation number. Write this down. Phone payments post within one business day, the same as online payments. You don't need to be a registered online user to pay by phone.
Paying by mail
Write a check payable to American Express. Include your account number on the check. Place the check and your payment coupon (from your paper statement) in an envelope and mail it to the address shown on your statement.
Mailed payments take five to seven business days to arrive and post to your account. American Express processes payments in the order they arrive, so a late payment by mail can result in late fees even if you mailed the check before the due date. If you rely on mail payments, send them at least 10 days before your due date to be safe.
Setting up automatic payments
Log into your American Express account online or through the app. Look for "Manage Payments" or "Autopay" in the settings or account menu. Select "Set Up Automatic Payments" and choose your bank account as the payment source.
Choose when you want the payment to happen each month — most people select their due date or a few days before. Then choose what amount to pay: your full statement balance, a fixed dollar amount, or your minimum payment. Confirm your selection. American Express will deduct this amount automatically on the date you chose each month.
You can change or cancel automatic payments anytime through the same menu. If you cancel, you'll need to make manual payments again or set up a new automatic payment schedule.
What payment methods American Express accepts and rejects
American Express accepts payments from U.S. bank accounts only — checking, savings, or money market accounts. You can link multiple bank accounts to your Amex account and choose which one to use for each payment.
American Express does not accept payments from credit cards, debit cards, or other American Express cards. You cannot pay one Amex card with another Amex card, and you cannot pay with a card from another issuer. If you don't have a U.S. bank account, you'll need to use the phone payment method and provide your bank details verbally to a representative.
What happens if you miss your due date
If your payment doesn't post by your due date, American Express will charge a late fee. The amount depends on your card type and account history, but typically ranges from $25 to $40 for the first late payment. Interest will also start accruing on your unpaid balance at your card's regular APR.
A late payment stays on your credit report for seven years and can lower your credit score. If you miss a payment, pay as soon as possible to stop additional interest from building up. Contact American Express if you're having trouble making a payment — they may be able to work with you on a payment plan or temporarily adjust your due date.
Frequently Asked Questions
How long does it take for an American Express payment to post?
Online and app payments typically post within one business day. Phone payments also post within one business day. Mailed checks take five to seven business days to arrive and post. If you pay after your due date, a late fee will be charged regardless of when the payment posts.
Can I pay my American Express bill with a debit card?
No. American Express only accepts payments from U.S. bank accounts. You cannot pay with a debit card, credit card, or another American Express card. If you don't have a bank account, call the number on your card to discuss payment options with a representative.
What if I want to pay more than my full statement balance?
You can pay any amount up to your credit limit. Paying more than your balance creates a credit on your account that you can use toward future purchases. You can also request a refund of the credit to your bank account, though this may take several business days to process.
Can I change my due date?
Yes. Log into your American Express account online or through the app and look for "Manage Account" or "Account Settings." You can request to move your due date to a different day of the month. The change usually takes effect on your next statement. You can change your due date once per year.
What should I do if my payment doesn't go through?
Check your bank account to make sure the payment wasn't deducted. Log back into your Amex account and verify the payment status. If the payment failed, try again using a different bank account or call the number on your card to pay by phone. Contact your bank if the payment was deducted but doesn't show on your Amex account.