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HIGH-YIELD SAVINGS (APY) CALCULATOR

Compare the account you have with an APY you are considering. The calculator applies the same starting deposit and monthly contributions to both rates, then shows projected balances and interest after 1, 3, and 5 years.

Saving toward a specific amount or deadline? Use the Savings Goal Calculator to estimate the monthly contribution required.

Scope: Editable values are examples, not bank offers. The calculation assumes both APYs remain constant, monthly contributions arrive at the end of each month, and there are no withdrawals, fees, bonuses, taxes, balance tiers, or promotional-rate expirations.
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APY Comparison Results

After 1 Year
Current balance$0.00
Comparison balance$0.00

Interest difference$0.00

After 3 Years
Current balance$0.00
Comparison balance$0.00

Interest difference$0.00

After 5 Years
Current balance$0.00
Comparison balance$0.00

Interest difference$0.00

Total Contributions After 5 Years$0.00
Interest at Current APY$0.00
Interest at Comparison APY$0.00

APYs are variable unless the institution explicitly guarantees a rate. Actual institutions may calculate interest daily and credit it on a different schedule; APY standardizes the annual yield, so the estimate uses the monthly rate mathematically equivalent to the entered APY.

📖 Understanding High-Yield Savings Accounts

A high-yield savings account (HYSA) is a savings account marketed with a comparatively high annual percentage yield. Rates, balance requirements, fees, transaction features, and withdrawal access vary by institution, so compare the full account terms rather than the advertised APY alone.

APY vs. interest rate

APY reflects both the interest rate and the frequency of compounding, making it the appropriate standardized figure for comparing deposit accounts. For example, a 4.40% nominal rate compounded monthly is about 4.49% APY. Compare APY with APY, then review fees and requirements that could reduce what you actually earn. At the same stated APY, different compounding schedules do not change the standardized annual yield. See the CFPB's APY definition.

FDIC insurance, explained

The standard FDIC insurance amount is $250,000 per depositor, per insured bank, for each ownership category. Deposits held in the same ownership category at the same bank are added together when coverage is calculated. Federally insured credit unions generally provide the same standard amount through the NCUA. Coverage for joint, retirement, trust, and other categories depends on account ownership and eligibility rules; it should not be inferred from one balance alone. Verify an institution and estimate coverage with the FDIC's EDIE or the NCUA Share Insurance Estimator.

HYSA vs. CD vs. money market

✅ Choose a HYSA if You want your money liquid — accessible anytime without a penalty — for an emergency fund or short-term savings goal.
❌ Consider a CD instead if You can leave the money untouched for a fixed term and prefer a stated rate for that term. Check the early-withdrawal penalty, maturity instructions, and whether the CD renews automatically.

Once your emergency fund is solid, see how that same discipline pays off on debt — try our personal loan calculator to compare paying down debt vs. saving further.

💡 Savings Optimization Pro Tips & Tricks

⚡ Watch for Tiered-APY Rate Traps

A headline APY may apply only within a particular balance tier or after meeting activity requirements. Check which portion of your balance earns the advertised rate and what happens above or below the qualifying range.

📊 Check if the APY Is "Promotional"

A promotional APY may end on a specified date or after an introductory period. Review the duration, ongoing APY, balance limits, and any conditions before comparing it with a variable non-promotional rate.

🛡️ Treat the $250K Standard Amount as a Starting Point

Coverage is calculated per depositor, per insured institution, per ownership category, with deposits in the same category aggregated. Separate categories can qualify for separate coverage only when their rules are met. Trust-account coverage has additional beneficiary rules and limits, so verify larger balances with the FDIC or NCUA estimator rather than assuming coverage.

🏛️ For Untouched Cash, Compare T-Bills and No-Penalty CDs

For money you will not need immediately, compare a savings account with Treasury bills and no-penalty CDs after considering liquidity, maturity, reinvestment risk, and taxes. Treasury marketable-security interest is subject to federal tax but exempt from state and local income taxes; Treasury securities are not FDIC-insured. See TreasuryDirect's tax guidance.

🧾 Keep Your Banking Record Clean (ChexSystems)

Deposit-account screening reports may affect account-opening eligibility. Review the institution's requirements and resolve inaccurate or outstanding records before applying; approval policies vary by institution.

⏳ Include Transfer Timing in the Comparison

Transfer speed, availability holds, and when interest starts accruing vary by institution and transfer method. Confirm those terms before moving funds, and weigh any delay or fee against the expected gain from the APY difference.