U.S. banking · Practical guide

Accounts, cards, ACH, and wires

The U.S. system uses a few similar-looking tools that move money in very different ways. Knowing which payment system you are using helps you understand its cost, speed, and whether a mistake can be reversed.

Checking and savings

A checking account is designed for regular transactions such as paychecks, card purchases, transfers, and bills. A savings account is designed for money you do not need to spend immediately. Compare monthly fees, minimum balances, ATM access, overdraft policies, support, and whether the institution is federally insured.

Deposit insurance: The FDIC insures eligible deposits at insured banks. The NCUA provides similar coverage at federally insured credit unions. Insurance is tied to the institution, ownership category, and applicable limits, not to a card brand.

Two numbers attached to a U.S. bank account

Routing number

Identifies the U.S. bank or credit union involved in a transaction. A wire routing number can differ from an ACH routing number, so use instructions for the exact transfer type.

Account number

Identifies your account at that institution. Treat it as sensitive and verify any request before sharing it.

Debit is not credit

A debit card generally spends money from your deposit account. It does not normally create credit history. A credit card uses a revolving line of credit that you repay. Protections and dispute processes also differ, so report a lost card or unauthorized transaction immediately.

How money moves

ACH

ACH is the bank-to-bank network behind many paychecks, bills, and account transfers. It is often low-cost but may take time to settle.

Wire transfer

Wires are commonly used for large or urgent transfers. They can be expensive and difficult to reverse. Verify instructions through a trusted channel.

Card payment

The merchant asks the card network and issuer to authorize a purchase. An approval reserves the purchase amount, but the payment may take time to finish processing. Temporary holds can reduce your available balance in the meantime.

Moving money across borders

Compare the amount that will arrive after fees and currency conversion, not only the advertised transfer fee. Check the exchange-rate spread, delivery time, receiving-bank charges, refund terms, and recipient details.

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Primary sources: FDIC deposit insurance, CFPB bank accounts, and CFPB sending money.

Educational information only. Fees, timing, protections, and eligibility vary.