Don't Let Your Cash Sit Idle. Here's What $1,000, $5,000 and $10,000 Could Earn in a CD
If you’ve been holding extra cash in a checking account — perhaps from a bonus, tax refund or wedding gift — you could be leaving money on the table.
A low-risk place where your money can grow is a certificate of deposit, or CD. It's a type of account that typically pays a higher interest rate than a traditional savings account. In exchange, the bank (or credit union) keeps your money for a fixed term, usually anywhere from six months to a few years. You'll pay a penalty if you need to withdraw the money early.
Many banks are offering CDs with annual percentage yields of 3.5% to 4%, and some credit unions are advertising rates up to 5%.
Based on a 4% APY, here's what $1,000, $5,000 and $10,000 could get you in six, 12 and 24 months.
$1,000
At 4%, the growth rate of a certificate of deposit is underwhelming. Tying up $1,000 for two full years for an extra $80 may not feel worthwhile — especially if you want flexibility.
Term | Total growth | Interest earned |
|---|---|---|
6 months | $1,019.80 | $19.80 |
12 months | $1,040.00 | $40.00 |
24 months | $1,081.60 | $81.60 |
$5,000
Opening a 4% CD with $5,000 is a better deal — particularly if you’re saving for a special purchase or a vacation. After 12 months, $200 earned in interest can mean the difference between economy seats and extra leg room on your next flight.
Term | Total growth | Interest earned |
|---|---|---|
6 months | $5,099.02 | $99.02 |
12 months | $5,200.00 | $200.00 |
24 months | $5,408.00 | $408.00 |
$10,000
Over two years, $10,000 in a 4% CD will accrue $800 in interest with virtually no risk, assuming the account is insured by the FDIC. That boost can give you some breathing room on essentials like rent and utilities. You can pay off some debt, snag a new laptop or just put the money toward your daily $7 coffee for about three months. The choice is yours.
Term | Total growth | Interest earned |
|---|---|---|
6 months | $10,198.04 | $198.04 |
12 months | $10,400.00 | $400.00 |
24 months | $10,816.00 | $816.00 |
Compare CD Rates
- Earn 3.50% with a Barclays 6-Month CD
- 6 to 60-month terms available
- No minimum deposit required
-
3.50 % APY* 4-Month CD
-
New Customers can earn up to $1,500 with code HEADSTART.
- $1 minimum deposit. 24/7 online access.
- FDIC Insured.
* Rate as of 1/8/2026
- Earn 4.00% APY with Valley's CD
- Term: 12 months
- Min. deposit required: $500
- Open an online account in 5 min.
- FDIC Insured
*Rate as of 11/11/25
Bottom line
Convincing someone to lock up $1,000 for two years just to earn an extra $80 is a hard sell. A better pitch would be earning $400 on $5,000, or over $800 on $10,000, the dollar amount that a CD would earn today for those figures.
For many savers, a CD is worth it if they can fund it with at least a few thousand dollars, even if only for a six-month term. Maybe your emergency fund needs a boost, or you have a big expense coming up.
Before moving your money, check whether it's needed elsewhere now or in the next six months. If you won't miss the deposit anytime soon, a CD is safe way to boost your savings.
More from Money:
What Is a Certificate of Deposit (CD)?
Dollar Scholar Asks: Should I Put Some of My Savings Into CDs?