How American Express payment works

American Express lets you pay your bill online, by phone, by mail, or through automatic payments from your bank account. The method you choose affects when the payment reaches Amex and whether you can set it and forget it. Most cardholders pay online through their Amex account or set up autopay, which deducts money on a date you choose each month.

Your payment due date appears on your statement and is typically 21 to 25 days after your statement closes. Amex counts a payment as received on the day it arrives at their processing center, not the day you send it. If you pay by mail, allow five to seven business days for delivery. If you pay online or by phone, the payment usually posts within one business day.

Key Takeaways

  • Online payment through your Amex account or the Amex mobile app is the fastest method and shows confirmation when ready.
  • Autopay deducts your chosen amount on a date you set each month, but you must log in once to set it up and can change it anytime.
  • Phone payments (1-800-528-4800) take one business day to post and require your card number and bank account or routing information.
  • Mail payments take five to seven business days and should be sent to the address on your statement, not a general Amex office.
  • Amex charges a late fee if your payment does not arrive by the due date, even if you mailed it on time.

Paying online through your Amex account

Log into your American Express account at americanexpress.com or use the Amex mobile app. Click "Pay" or "Make a Payment" and enter the amount you want to pay. You can pay your full balance, the minimum payment, or any amount in between. Amex will show you the due date and confirm the payment amount before you submit.

You can pay from a bank account (checking or savings) or use a debit card. Amex does not charge a fee for paying from a bank account, but charges a fee if you pay with a debit card from another bank. The fee is a percentage of the payment amount and appears on your next statement. Once you submit, you receive a confirmation number when ready, and the payment posts within one business day.

Setting up automatic payments

Autopay removes the need to remember your due date each month. Log into your Amex account, go to "Manage Autopay" or "Automatic Payments," and choose the amount and date. You can set it to pay your full statement balance, a fixed dollar amount, or your minimum payment. The payment will deduct from your bank account on the date you choose, every month.

You can change or stop autopay anytime by logging back into your account. If you change your mind after the payment has processed, contact Amex to request a reversal, though they may not be able to stop a payment that has already left your bank. Autopay is free and uses your bank account, so no debit card fees explore.

Paying by phone

Call American Express at 1-800-528-4800 to pay by phone. Have your card number ready and be prepared to provide your bank account number and routing number, or a debit card number. A representative will confirm the amount and the date the payment will post. The payment takes one business day to reach Amex's system.

Phone payments are useful if you need to pay when ready and do not have online access, or if you want to speak to someone about your account. Amex does not charge a fee for phone payments made from a bank account. If you use a debit card, the same fee applies as online debit card payments.

Paying by mail

Write a check or money order and mail it to the address shown on your statement under "Payment Address." Do not send payment to Amex's general office address — use only the payment address on your bill. Include your account number on the check. Mail takes five to seven business days to arrive, so send your payment at least a week before your due date to avoid a late fee.

Keep a record of the check number and the date you mailed it. If your payment does not post within ten business days, contact Amex with this information. Amex does not charge a fee for mailed payments, but late fees explore if the payment arrives after your due date, regardless of when you mailed it.

What happens if you miss a payment

If your payment does not arrive by the due date, Amex charges a late fee. The fee amount depends on your card type and your account history. A late payment also appears on your credit report and can lower your credit score. If you are more than 60 days late, Amex may increase your interest rate.

If you realize you will miss a due date, contact Amex before the date arrives. They may be willing to waive a single late fee or give you a few extra days, especially if you have a good payment history. After you miss a payment, call as soon as you can to bring your account current and discuss your options.

Frequently Asked Questions

Can I pay my Amex bill with another credit card?

No, American Express does not accept credit card payments, including cards from other companies. You must pay from a bank account, debit card, or by check. Paying a credit card with another credit card typically counts as a cash advance and incurs fees and interest.

What if I pay more than my statement balance?

The extra amount becomes a credit on your account. You can use it toward future purchases, request a refund to your bank account, or leave it there. Log into your account to request a refund, which usually takes five to seven business days to arrive.

Is there a fee for paying early?

No, American Express does not charge a fee for paying early or paying more than you owe. Paying early reduces the interest you owe if you carry a balance, since interest is calculated daily on your remaining balance.

How do I know if my payment went through?

Online and phone payments show a confirmation number when ready. Check your account the next business day to confirm the payment posted. For mailed checks, log into your account after ten business days — if the payment does not appear, contact Amex with your check number and mailing date.