Getting a US card is only half the job. If you live outside the US, or move back home, you also have to keep it open, paid and in good standing so your credit history keeps growing. This guide covers the practical upkeep: fees, paying the bill, keeping contact details current, avoiding declines and closures, and the home-country rules you must still follow.
1. Foreign transaction fees
Many US cards add a foreign transaction fee (FTF), typically 3% (2.7% on some Amex cards), to any purchase processed outside the US or in a foreign currency. That includes online purchases from foreign merchants even when priced in USD.
| Usually no FTF | Usually charge FTF |
|---|---|
| Amex Platinum, Gold, Green | Amex Blue Cash Everyday/Preferred (2.7%) |
| Chase Sapphire Preferred/Reserve | Chase Freedom Unlimited/Flex (3%) |
| Capital One (all current consumer cards) | Many store and starter cards |
| Citi Strata Premier, Bank of America Travel Rewards | Citi Double Cash (3%) |
2. Paying the bill in USD from abroad
US issuers want payment in USD from a US bank account (ACH). Options:
| Method | How it works | Notes |
|---|---|---|
| US checking account (Chase, BofA, Citi, Schwab, etc.) | Link it in the card app and turn on autopay | Most reliable. Keep the bank account active too. |
| Wise USD account details | Add Wise's routing and account number as the payment account (ACH debit) | Works with many issuers, but some reject or reverse fintech accounts. Not available for mainland China addresses. |
| Interactive Brokers / Schwab International | Withdraw to your US checking account, then pay; or use the broker's bill-pay if offered | Brokers are not a bank checking account; direct ACH pulls by issuers may fail. |
| International wire to the issuer | Some issuers publish wire instructions | Slow, costly, easy to misapply. Last resort. |
| Payment from a foreign bank | Rarely supported | Avoid. |
Set it and forget it
- Turn on autopay for the full statement balance (or at least the minimum) on every card.
- Keep a buffer in the linked account. A returned ACH payment can trigger a late fee, a returned payment fee, and the issuer may suspend the account.
- Set email/app alerts for statement ready, payment posted and large transactions.
3. Address and phone upkeep
- Keep a valid US address on file if your cardmember agreement requires one, or update it honestly to your foreign address if the issuer supports that. Several issuers (e.g. Amex, Citi, Capital One) accept foreign addresses for existing accounts. Some do not, and may close the account when mail is returned.
- Returned mail (e.g. a replacement card bouncing) is a common trigger for account restrictions. Make sure replacement cards can reach you. Virtual mailbox services can forward them.
- Phone: keep a number that can receive SMS one-time passcodes. US numbers can be ported to low-cost plans; see the phone section of this site. Losing your 2FA number is the most common way people lose access abroad.
- Keep your email current and whitelist the issuer's domains.
4. Travel notices and declines
Most big issuers (Chase, Amex, Capital One, Citi) no longer require travel notices and use real-time fraud detection instead. Still:
- Add a travel notice in the app if the option exists. It does no harm.
- Answer fraud texts/calls promptly. A declined transaction often just needs a "yes, it's me" reply.
- Card-not-present (online) declines abroad often come from:
- AVS mismatch: the billing ZIP/address you typed does not match the issuer's records.
- Foreign IP or new device logging into the issuer or merchant.
- Merchant categories the issuer treats as high risk (gift cards, crypto, money transfer).
- Use the address exactly as the issuer has it. Don't use VPNs or tricks to mislead the issuer about who you are. If a transaction is legitimate, call and confirm.
5. Inactivity closures ("养卡" / keeping cards alive)
The US CARD Act bans inactivity fees on credit cards, but issuers may still close an unused account. There is no fixed industry rule. Closures commonly happen after 12–24 months without activity, and sometimes sooner.
A closed card stops aging as an open account and cuts your total limit, which raises utilization.
Simple routine
- Make at least one small purchase every 1–3 months on each card, for example a streaming subscription or a cloud bill, and let autopay clear it.
- Rotate recurring charges across cards so none sits idle.
- If you want to drop an annual-fee card, product-change (downgrade) it to a no-fee version rather than cancelling. You keep the account age.
6. Security
- Use the issuer's official app and turn on card lock/freeze features when a card isn't in use.
- Consider a credit freeze at all three bureaus. See how US credit works.
- Never share one-time passcodes. Issuers will not ask for them by phone.
7. Home-country rules (mainland China readers)
Holding and using a US card doesn't exempt you from your own country's rules. For mainland China residents, the key points as of September 2026 are:
- Annual FX convenience quota: each individual can buy foreign currency up to the equivalent of USD 50,000 per calendar year for current-account purposes such as travel, study and personal consumption, by filing a truthful purpose declaration. Using purchased FX for overseas property, securities investment, or investment-type life insurance is not permitted under this quota.
- No splitting: breaking a large conversion into pieces across family members (分拆购汇) to get around the quota is prohibited. It can put you on SAFE's watch list (关注名单), which restricts future conversions.
- Monitoring of Chinese bank cards used abroad: since September 2017, Chinese banks report to SAFE every overseas cash withdrawal and every overseas purchase of RMB 1,000 or more (equivalent) on domestically issued cards. Overseas cash withdrawals on Chinese cards are capped at RMB 10,000 per card per day and RMB 100,000 per person per year.
- Tax: mainland tax residents are taxable on worldwide income, including US interest and dividends. Tax authorities have stepped up enforcement on undeclared overseas income using CRS data. Keep records and file the annual reconciliation (年度汇算) as required.
Hong Kong and Taiwan residents don't face the same FX quota, but should follow their own tax reporting rules. Taiwan, for example, has overseas income reporting under the basic income tax (最低税负制).
FAQ
Can I move my billing address to Hong Kong/Taiwan/China? Some issuers allow a foreign address on existing accounts. Others require a US address. Ask the issuer. Don't give an address you don't use.
Will using my card abroad hurt my credit? No. Location doesn't affect your score. Only payment behavior and balances do.
My issuer asked me to verify my identity or income while I'm abroad. Respond quickly with genuine documents. Ignoring it usually leads to closure.
Sources
- https://www.consumerfinance.gov/rules-policy/regulations/1026/52/
- https://www.consumerfinance.gov/ask-cfpb/what-is-a-foreign-transaction-fee-en-19/
- https://www.americanexpress.com/us/credit-cards/
- https://creditcards.chase.com/
- https://www.capitalone.com/credit-cards/
- https://wise.com/help/articles/2810318/can-i-get-usd-account-details
- https://www.safe.gov.cn/safe/2017/0602/6841.html
- https://www.safe.gov.cn/en/2017/1230/1391.html
- https://www.annualcreditreport.com/
