A checking account is designed for daily spending — deposits, bill pay, debit purchases. A savings account is designed for holding money you don't need immediately, and typically earns interest. Most people use both together.
Checking and savings accounts are both deposit accounts held at a bank or credit union, and both are insured by the FDIC (for banks) or NCUA (for credit unions) up to $250,000 per depositor. The core difference is purpose: checking accounts are built for transactions, savings accounts are built for accumulation.
A checking account gives you a debit card, check-writing ability, and direct deposit. There's typically no limit on how many transactions you can make per month. The tradeoff: most checking accounts pay little to no interest, and some charge monthly fees if you don't meet a minimum balance.
A savings account earns interest (expressed as APY — annual percentage yield) on the balance you keep in it. Historically, federal regulation (Regulation D) limited savings withdrawals to 6 per month, though the Federal Reserve suspended that limit in April 2020. Many banks still enforce a version of this limit as their own policy.
The practical approach most people use: keep one to two months of spending money in checking for day-to-day bills and purchases; keep your emergency fund and short-term savings in a savings account (ideally a high-yield savings account at an online bank) where it earns more. The CFPB's resource on deposit accounts covers both account types and your consumer rights.