High-Yield Savings Calculator
See exactly what staying in a low-rate savings account is costing you, side by side with a high-yield alternative -- this calculator runs the comparison for you.
Check your statement or online banking — many traditional accounts pay well under 1%.
| Current account balance | $0.00 |
| High-yield account balance | $0.00 |
This is a general estimate, not financial, investment, or tax advice.
How to Use This Calculator
Enter your deposit, monthly contribution, and how many years you're comparing. Enter your current account's APY (check your statement or online banking), then a high-yield rate to compare against. The result leads with the gap between the two -- what switching would actually earn you -- with each account's individual balance shown below it.
Why the Gap Gets Bigger Over Time
Both balances above use the same deposit and monthly contribution — the only difference is the rate. Because interest compounds, the gap between a low-rate and high-yield account doesn't grow in a straight line; it widens faster the longer the money sits. Try extending the years field to see this effect for yourself.
Frequently Asked Questions
Why is the gap between accounts so large?
Traditional savings accounts at large banks commonly pay well under 1% APY, while high-yield savings accounts, typically at online banks, have commonly offered APYs in the 3-5% range in recent periods. Applied to the same balance over time, that rate difference compounds into a meaningfully larger gap.
Is a high-yield savings account FDIC-insured like a regular one?
Commonly yes, up to the standard coverage limit at participating banks. Confirm insurance status with the specific institution before opening an account.
Are there downsides to switching to a high-yield account?
High-yield savings rates are usually variable and can change, unlike a CD's locked-in rate. See High-Yield Savings vs. CDs for that trade-off.
How do I find my current account's actual rate?
Check your monthly statement, your bank's online banking dashboard, or your account disclosure documents. It's often labeled APY.
Does the gap keep growing the longer I wait?
Yes, because both balances compound, the dollar gap between them widens over time, not just accumulates in a straight line. Try increasing the years field above to see this directly.
Sources
- Traditional vs. high-yield rate ranges — HYSAcalc, citing FDIC data
- Both account types are commonly FDIC-insured up to the standard limit — Rate Grove
How This Calculator Is Verified
Built by Cedrick Reese. Every formula on this page is checked against multiple independent sources before publishing, and cross-verified against real calculations before this page went live -- not just written once and trusted.
Last reviewed: August 25, 2026