Money guide · Savings accounts and emergency funds
What is a high-yield savings account?
Learn how high-yield savings accounts work, how to compare APY and fees, and why access and deposit insurance matter.
How it works
Compare the annual percentage yield, minimum balance, fees, and conditions for earning the advertised rate. APY includes compounding under its stated assumptions. A variable savings rate can change after you open the account, so the opening rate is not a promise for an entire year. Check whether a promotion has an end date or applies only to part of the balance.
A worked example
With a constant hypothetical 4% APY, $10,000 left untouched for one year becomes $10,400 before tax and fees. At 1% APY it becomes $10,100. The difference is $300. A $15 monthly fee costs $180 per year and can substantially narrow that gap. These figures illustrate the comparison; they are not current bank offers.
What to compare
Try the account against your likely use: how quickly can you move money, are transfers limited by the institution, and is the bank itself FDIC-insured? Verify the actual institution rather than relying on an app’s branding. For a credit union, check NCUA coverage or the institution’s stated insurer. Keep a bill-payment buffer if transfers take time.
A common mistake to avoid
Chasing a headline rate without checking access or fees can make an emergency reserve less useful. Also separate interest earned from purchasing power. If prices rise faster than your after-tax return, the account can grow in dollars while buying less. Use the savings-and-inflation guide when comparing a longer-term goal.
Are high-yield savings rates fixed?
Usually savings rates are variable. Read the account disclosure for rate changes, promotional conditions, and balance tiers. A fixed-term CD may have different rate terms.
Sources and further reading
Connect this to inflation
Inflation changes the spending power of money over time. Read the related inflation explainer, or compare cd growth using your own assumptions.