A $45,000 cd deposit could earn $23,557 in 10 years, outpacing savings
A $45,000 deposit into a long-term CD could generate significantly more interest than leaving it in a traditional savings account.
Cd rates offer a major advantage over savings accounts
Today's low interest rates for borrowers are presenting an unexpected opportunity for savers. While the average savings account yields only 0.38%, many long-term CDs are offering competitive returns of 4% or higher. And unlike savings accounts, CD rates can be locked in for multiple years, providing a guaranteed return.
The decision between keeping money accessible in a savings account or committing it to a multi-year CD isn't just about flexibility, though. The choice can also have a meaningful impact on how much that money is worth a few years from now.
Here's the math for a $45,000 deposit at various CD terms:
$45,000 in a 1-year CD at 4.11% would earn $1,849.50 in interest
$45,000 in a 3-year CD at 4.15% would earn $5,838.22 in interest
$45,000 in a 5-year CD at 4.20% would earn $10,277.85 in interest
$45,000 in a 10-year CD at 4.30% would earn $23,557.59 in interest
The trend is clear: longer CD terms tend to carry higher rates, since banks reward depositors for tying up their money for extended stretches.
But the real story here is compounding. A 10-year CD doesn't just earn roughly 10 times what a 1-year CD earns — it earns more than 12 times as much, because interest accrues on both the balance and the interest year after year rather than resetting annually.
For a $45,000 deposit, the difference between $1,849.50 and $23,557.59 is the difference between a nice bonus and a genuine wealth-building tool.
That said, a 10-year term isn't the right fit for every saver. Locking up $45,000 for a decade means forfeiting access to that cash and typically paying an early withdrawal penalty if plans change. Ultimately, the right CD term depends on when you're likely to need the funds, not just which rate looks the most attractive on paper.
Traditional savings accounts at many big banks still pay an average of 0.38% APY nationally — a rate that hasn't moved much over the last year. On a $45,000 balance held for one year at that average rate, the account would earn roughly $171 in interest.
Compare that to the $1,849.50 a 1-year CD at 4.11% would generate, and the CD account holder comes out over $1,678 ahead for committing to the exact same balance over the exact same period.
Extend the timeline, and the disparity becomes harder to ignore. Over five years, a $45,000 balance earning the average savings rate would grow by about $861 in interest, compared to the $10,277.85 a 5-year CD at 4.20% would deliver.
Over a full decade, that same savings account would earn roughly $1,739 — while the 10-year CD earns more than $23,500. That's a gap of nearly $21,800 on the exact same deposit, simply because of where the money was parked.
As noted above, though, the big tradeoff is access. A traditional savings account allows unlimited access to funds at any time, while a standard CD generally requires the money to stay put until maturity.
For savers confident they won't need the cash before the term ends, though, that tradeoff increasingly favors the CD account. The bottom line is a $45,000 long-term CD opened this July could earn anywhere from about $1,849 on a 1-year term to more than $23,500 on a 10-year term, depending on the rate locked in and how long the funds remain deposited.
Compared to a traditional savings account earning well under 0.5%, the difference amounts to thousands of dollars in interest that would otherwise go unclaimed.
For savers who don't need immediate access to this money, a long-term CD offers a way to convert an otherwise idle balance into a meaningful, guaranteed return — no market risk required.
That said, it's worth shopping current rates across multiple banks and confirming the specific terms before committing, since even small differences in the rate can translate into hundreds or thousands of dollars over time.