Yes, banks convert foreign currency, but they charge you for it

When you deposit foreign currency into a U.S. bank account or send money from abroad, the bank converts it to U.S. dollars. They do this automatically — you cannot keep a foreign currency balance in a standard checking or savings account. The bank sets the exchange rate they use, and that rate is almost always worse than the mid-market rate you see online. The difference between what they charge and the actual market rate is how they make money on the conversion.

The conversion happens at different points depending on how the money arrives. If you deposit a foreign check, the bank converts it when they clear it. If you receive a wire transfer from another country, the receiving bank converts it. If you use an ATM abroad, your bank converts the withdrawal. In every case, you pay a spread — the gap between the rate the bank uses and the rate the market actually trades at that moment.

How much you lose to the conversion depends on the currency, the bank, and the amount. Major banks like Chase, Bank of America, and Wells Fargo typically charge spreads of 1 to 3 percent on top of the mid-market rate. Some smaller banks and online banks charge less. Credit unions sometimes offer better rates to members. The only way to know what your specific bank charges is to ask them directly or read the fine print on their foreign exchange disclosure.

Key Takeaways

  • U.S. banks convert foreign currency to dollars automatically; you cannot hold a foreign currency balance in a regular account.
  • Banks use an exchange rate that is worse than the mid-market rate, and the difference is their profit on the conversion.
  • The conversion happens when you deposit a foreign check, receive a wire transfer, or withdraw cash from an ATM abroad.
  • Major banks typically charge 1 to 3 percent spreads, while some online banks and credit unions may charge less.
  • You can ask your bank what rate they will use before you deposit or transfer money, and compare rates across banks if the amount is large.

Where the conversion happens and when you see the charge

If you deposit a foreign check, your bank converts it during the clearing process, which takes several business days. You will see the dollar amount they credited to your account, not the original foreign amount. If the check was for 1,000 euros and your bank's rate that day was 1.08 dollars per euro, they might credit you $1,070 instead of $1,080, keeping the $10 difference.

Wire transfers from abroad work the same way. The sending bank in the foreign country may also convert the money before it leaves, and then your U.S. bank converts it again when it arrives. This double conversion is one reason wire transfers from abroad are expensive — you pay spreads twice. Some international wire services and banks offer lower rates on large transfers, but you have to ask.

ATM withdrawals abroad are converted by your bank at the moment you withdraw. Your bank charges the spread, and the ATM operator may charge a fee on top of that. Debit card purchases abroad are also converted by your bank, usually at the time the merchant processes the charge, not the time you swipe the card. This timing difference can matter if the exchange rate moves between those two moments.

How to find out what rate your bank will charge

Call your bank's customer service line and ask for their foreign exchange rate on a specific currency pair — for example, euros to U.S. dollars. Ask them to tell you the mid-market rate and the rate they will actually use. The difference is the spread. Write down both numbers so you can calculate how much you will lose on your specific transaction.

Some banks publish their foreign exchange rates online, but many do not. If your bank does not publish rates, you can check the mid-market rate yourself on a financial website like XE.com or OANDA, then compare it to what your bank quotes you. The mid-market rate changes constantly, so the rate your bank quotes you today will not be the same tomorrow.

If you are converting a large amount of money, it is worth calling multiple banks to compare rates. The difference between a 1 percent spread and a 3 percent spread on $10,000 is $200. Some banks offer better rates to customers with high account balances or to those who transfer money regularly. Ask if your bank has any programs that reduce foreign exchange costs.

Alternatives to bank conversion for large transfers

If you are sending money from another country to the U.S., or receiving a large transfer, you have options beyond your bank. Specialized money transfer services like Wise (formerly TransferWise), OFX, and Remitly often charge lower spreads than banks. They are not banks themselves — they are licensed money transfer operators — but they can move money between countries and convert currency.

These services typically charge a flat fee plus a mid-market rate or a rate very close to it. For a $5,000 transfer, Wise might charge $50 to $100 total, while a bank might charge $150 to $300 in hidden spread costs. The tradeoff is that transfers through these services sometimes take longer than bank wires, and they work best for regular transfers rather than one-time emergencies.

If you receive money from abroad regularly — for example, a salary from a foreign employer — you might open an account with an international bank that has branches in both countries, or use a fintech bank that specializes in international transfers. These options require more setup but can save money over time if the amounts are large.

What happens if you need to convert currency before depositing

Some people convert foreign currency to U.S. dollars at a currency exchange shop before depositing it. This is rarely a good deal. Currency exchange shops charge spreads of 3 to 5 percent or higher, and they often charge a flat fee on top. You are better off depositing the foreign currency directly into your bank account and letting the bank convert it, even though the bank's spread is not cheap.

The exception is if you are traveling and need cash in U.S. dollars immediately. In that case, a currency exchange shop at an airport or in a city center is your only option. But if you have time and the money is going into a bank account anyway, skip the exchange shop and deposit the foreign currency or foreign check directly.

How to minimize conversion costs

Batch your transfers. If you receive money from abroad multiple times a month, ask whether you can receive it all at once instead. One conversion costs less than four conversions, even if the total amount is the same.

Use a bank account in the foreign country if you receive money there regularly. Keep the money in the foreign currency as long as you can, and convert only when you need it. This gives you control over the timing and lets you shop around for the best rate.

For large one-time transfers, use a money transfer service instead of your bank. The setup takes 10 minutes, and the savings can be hundreds of dollars.

If you are paid by a foreign employer, ask whether they can pay you in U.S. dollars instead of converting the foreign currency. Some employers can do this, and it saves you the conversion cost entirely.

Frequently Asked Questions

Can I ask my bank to use a specific exchange rate?

No. Your bank sets the rate they use, and you cannot negotiate it as an individual customer. Large businesses sometimes can negotiate rates, but regular account holders cannot. You can choose whether to do the transaction at all, but you cannot change the rate.

Why do banks charge different rates than the mid-market rate?

The mid-market rate is the rate banks trade with each other at. Your bank buys foreign currency at or near that rate, then sells it to you at a higher rate. The spread is their profit. They also build in a small cushion for the risk that the rate will move between the time they quote you and the time they execute the transaction.

If I receive a wire transfer from abroad, does the sending bank or my bank convert the currency?

Both may convert it. The sending bank converts it to dollars before sending it, and your bank may convert it again when it arrives. This is why international wire transfers are expensive. Ask both banks what rate they will use before you send or receive the money.

Do credit unions charge less for foreign currency conversion?

Many do, but not all. Credit unions often have lower spreads than large banks, especially if you are a member. Call your credit union and ask what rate they charge on the specific currency you need. Some credit unions also waive fees on foreign wire transfers for members.

What is the best way to convert a large amount of foreign currency?

For amounts over $5,000, compare rates from your bank, a money transfer service like Wise, and any credit union you belong to. Calculate the total cost including fees and spreads for each option. Money transfer services often win for large transfers, but it depends on the currency and the amount.