Oak Brook, Illinois (IL) Savings Rates - March 2026
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The savings rates displayed are actual, verified rates sourced directly from the official websites of banks and credit unions. Our editorial content is independent of any advertiser relationships.
The best savings rates for Oak Brook, Illinois and the surrounding area include Corporate America Family Credit UnionCorporate America Family Credit Union1315 W 22ND ST STE 102, OAK BROOK, IL 60523 2060A+5.0 ★Texas Ratio: 3.64% Business Prosperity Savings at 3.75% APY, PNC BankPNC Bank2021 Spring Rd, Oak Brook, IL 60523A5.0 ★Texas Ratio: 6.83% PNC High Yield Savings® at 3.25% APY, Providence Bank & TrustProvidence Bank & Trust2001 York Rd, Oak Brook, IL 60523A5.0 ★Texas Ratio: 6.14% Achieve More Savings at 1.65% APY, Republic Bank of ChicagoRepublic Bank of Chicago2221 Camden Ct, Oak Brook, IL 60523A+5.0 ★Texas Ratio: 4.71% Commercial Savings at 0.10% APY, and Fidelity Bank & Trust (IA)Fidelity Bank & Trust (IA)242 Wall St, East Dubuque, IL 61025A+5.0 ★Texas Ratio: 1.72% Snap $tack Savings at 5.12% APY. Savings rates as of March 25, 2026 according to verified data from MonitorBankRates.
To see how these savings rates in Oak Brook, Illinois, and the surrounding area, compare, use our comprehensive tables below for side-by-side comparisons to find the best savings rates available. Rates in Oak Brook, Illinois (IL) are continually updated — we recommend checking back frequently.
Savings rates reflect recent market quotes and representative offers available to depositors in Oak Brook, Illinois and the surrounding area. Last Updated and Verified: March 25, 2026
Compare the Best Savings Rates in Oak Brook, Illinois & Surrounding Communities
Source: Verified Savings Rate Data provided by MonitorBankRates
Institution
Product
APY
Min Deposit
Profile
Corporate America Family Credit Union
Institution Rating:
A+5.0 ★Texas Ratio: 3.64%
1315 W 22ND ST STE 102, OAK BROOK, IL 60523 2060
Business Prosperity Savings
3.75%
$1,000
▼
Rate0.00%
Min Deposit$1,000
Min Balance—
UpdatedMar 25, 2026
Details
Intro rate subject to change
PNC Bank
Institution Rating:
A5.0 ★Texas Ratio: 6.83%
2021 Spring Rd, Oak Brook, IL 60523
PNC High Yield Savings®
3.25%
$0
▼
Rate3.20%
Min Deposit$0
Min Balance—
UpdatedMar 21, 2026
Details
Providence Bank & Trust
Institution Rating:
A5.0 ★Texas Ratio: 6.14%
2001 York Rd, Oak Brook, IL 60523
Achieve More Savings
1.65%
$200
▼
Rate0.00%
Min Deposit$200
Min Balance—
UpdatedMar 21, 2026
Details
Account balances of $150,000.00 and over will earn 1.65% APY
Providence Bank & Trust
Institution Rating:
A5.0 ★Texas Ratio: 6.14%
2001 York Rd, Oak Brook, IL 60523
Achieve More Savings
0.60%
$200
▼
Rate0.00%
Min Deposit$200
Min Balance—
UpdatedMar 21, 2026
Details
Account balances of $25,000.00 to $149,999.99 will earn 0.60% APY
Providence Bank & Trust
Institution Rating:
A5.0 ★Texas Ratio: 6.14%
2001 York Rd, Oak Brook, IL 60523
Achieve More Savings
0.25%
$200
▼
Rate0.00%
Min Deposit$200
Min Balance—
UpdatedMar 21, 2026
Details
Account balances of $0.00 to $24,999.99 will earn 0.25% APY
Republic Bank of Chicago
Institution Rating:
A+5.0 ★Texas Ratio: 4.71%
2221 Camden Ct, Oak Brook, IL 60523
Commercial Savings
0.10%
$1,000
▼
Rate0.10%
Min Deposit$1,000
Min Balance—
UpdatedMar 24, 2026
Details
PNC Bank
Institution Rating:
A5.0 ★Texas Ratio: 6.83%
2021 Spring Rd, Oak Brook, IL 60523
Standard Savings
0.03%
$0
▼
Rate0.03%
Min Deposit$0
Min Balance—
UpdatedMar 21, 2026
Details
PNC Bank
Institution Rating:
A5.0 ★Texas Ratio: 6.83%
2021 Spring Rd, Oak Brook, IL 60523
Standard Savings
0.02%
$0
▼
Rate0.02%
Min Deposit$0
Min Balance—
UpdatedMar 21, 2026
Details
Fidelity Bank & Trust (IA)
Institution Rating:
A+5.0 ★Texas Ratio: 1.72%
242 Wall St, East Dubuque, IL 61025
Snap $tack Savings
5.12%
$1,000
▼
Rate5.00%
Min Deposit$1,000
Min Balance—
UpdatedMar 25, 2026
Details
Qualifying balance up to $5,000.00
Together Credit Union
Institution Rating:
A+5.0 ★Texas Ratio: 5.65%
1153 Blue Spring Plz, Shiloh, IL 62269 7397
Accelerate It Savings
5.00%
$0
▼
Rate4.89%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
Qualifying balance up to $5,000.00
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
Savings Builder - Tier 1
5.00%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Digital Advantage Savings
4.40%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Premier Savings
4.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Elite Savings
4.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
State Farm Federal Credit Union
Institution Rating:
A+5.0 ★Texas Ratio: 0.27%
1 State Farm Plz, Bloomington, IL 61710 0001
Share Savings Accounts
4.08%
$0
▼
Rate4.00%
Min Deposit$0
Min Balance—
UpdatedMar 15, 2026
Details
State Farm Federal Credit Union
Institution Rating:
A+5.0 ★Texas Ratio: 0.27%
1 State Farm Plz, Bloomington, IL 61710 0001
IRA Savings Accounts
4.08%
$0
▼
Rate4.00%
Min Deposit$0
Min Balance—
UpdatedMar 15, 2026
Details
State Farm Federal Credit Union
Institution Rating:
A+5.0 ★Texas Ratio: 0.27%
1 State Farm Plz, Bloomington, IL 61710 0001
Electronic Share Accounts
4.08%
$0
▼
Rate4.00%
Min Deposit$0
Min Balance—
UpdatedMar 15, 2026
Details
IH Mississippi Valley Credit Union
Institution Rating:
B4.6 ★Texas Ratio: 20.04%
2500 River Dr, Moline, IL 61265 1670
SavingsBooster
4.00%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Justice Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.17%
2111 W Roosevelt Rd Ste 194, Chicago, IL 60608 1128
FREEDOM DIRECT SAVINGS
4.00%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
when you add Direct Deposit to a new or existing Justice Federal Checking Account.
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Preferred Savings
4.00%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
First Bank Creve Coeur, MO
Institution Rating:
A+5.0 ★Texas Ratio: 1.54%
4387 N Illinois St, Swansea, IL 62226
Kids Cash Savings
4.00%
$5
▼
Rate0.00%
Min Deposit$5
Min Balance—
UpdatedMar 18, 2026
Details
Waterman Bank
Institution Rating:
A+5.0 ★Texas Ratio: 3.95%
248 W Lincoln Hwy, Waterman, IL 60556
Business Savings
3.82%
$50
▼
Rate3.75%
Min Deposit$50
Min Balance—
UpdatedMar 24, 2026
Details
Waterman Bank
Institution Rating:
A+5.0 ★Texas Ratio: 3.95%
248 W Lincoln Hwy, Waterman, IL 60556
Kids Savings
3.82%
$50
▼
Rate3.75%
Min Deposit$50
Min Balance—
UpdatedMar 24, 2026
Details
Waterman Bank
Institution Rating:
A+5.0 ★Texas Ratio: 3.95%
248 W Lincoln Hwy, Waterman, IL 60556
High-Yield Savings
3.82%
$50
▼
Rate3.75%
Min Deposit$50
Min Balance—
UpdatedMar 24, 2026
Details
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Elite Savings
3.75%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
Royal Business Bank
Institution Rating:
A5.0 ★Texas Ratio: 6.64%
2323 S Wentworth Ave, Chicago, IL 60616
New Year Flexible Savings Account
3.75%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 21, 2026
Details
Terms and Conditions apply.
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Premier Savings
3.75%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
Savings Builder - Tier 2
3.62%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Elite Savings
3.50%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
First Security Bank Mackinaw, IL
Institution Rating:
A+5.0 ★Texas Ratio: 0.00%
101 E Fast Ave, Mackinaw, IL 61755
Health Savings Accounts
3.50%
$0
▼
Rate3.44%
Min Deposit$0
Min Balance—
UpdatedMar 24, 2026
Details
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Premier Savings
3.50%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
IH Mississippi Valley Credit Union
Institution Rating:
B4.6 ★Texas Ratio: 20.04%
2500 River Dr, Moline, IL 61265 1670
SavingsBooster
3.50%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Northwest Municipal Federal Credit Union
Institution Rating:
A+5.0 ★Texas Ratio: 0.15%
1420 Miner St, Des Plaines, IL 60016
Average daily share balance ranges
3.49%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 15, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
Business IMMA - Tier 8
3.35%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Bank First, NA
Institution Rating:
A+5.0 ★Texas Ratio: 0.91%
300 E Main St, Rockton, IL 61072
Investment Savings
3.35%
$50,000
▼
Rate3.31%
Min Deposit$50,000
Min Balance—
UpdatedMar 16, 2026
Details
$250,000.00 - $499,999.99
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
Business IMMA - Tier 7
3.35%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
Business IMMA - Tier 9
3.35%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
IMMA - Tier 9
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Vibrant Credit Union
Institution Rating:
A-5.0 ★Texas Ratio: 15.61%
4400 16th St, Moline, IL 61265
Community Business Savings
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 22, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
IMMA
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
IMMA - Tier 7
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
IRA-HSA IMMA - Tier 7
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
IMMA - Tier 8
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
IRA-HSA IMMA
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Michigan State University Federal Credit Union
Institution Rating:
A5.0 ★Texas Ratio: 9.68%
2500 N Halsted St, Chicago, IL 60614 6999
IRA-HSA IMMA - Tier 8
3.25%
$0
▼
Rate0.00%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
FTSB of Watseka, IL
Institution Rating:
A+5.0 ★Texas Ratio: 0.33%
145 E 5th Ave, Clifton, IL 60927
Health Savings Account
3.25%
$100
▼
Rate0.00%
Min Deposit$100
Min Balance—
UpdatedMar 20, 2026
Details
INB National Association
Institution Rating:
A+5.0 ★Texas Ratio: 2.04%
322 E Capitol Ave, Springfield, IL 62701
Structured Savings IRA
3.02%
$0
▼
Rate3.02%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Daily Balances Of $5,000-$100,000
Bank First, NA
Institution Rating:
A+5.0 ★Texas Ratio: 0.91%
300 E Main St, Rockton, IL 61072
Investment Savings
3.00%
$50,000
▼
Rate2.97%
Min Deposit$50,000
Min Balance—
UpdatedMar 16, 2026
Details
$150,000.00 - $249,999.99
North Shore Bank
Institution Rating:
A+5.0 ★Texas Ratio: 0.63%
1689 N Curran Rd, Mchenry, IL 60050
Premier Health Savings Account
3.00%
$0
▼
Rate2.97%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Lisle Savings Bank
Institution Rating:
A+5.0 ★Texas Ratio: 4.86%
1450 Maple Ave, Lisle, IL 60532
High Interest Savings
3.00%
$10
▼
Rate2.96%
Min Deposit$10
Min Balance—
UpdatedMar 20, 2026
Details
The Huntington National Bank
Institution Rating:
A+5.0 ★Texas Ratio: 4.60%
3333 W 26th St, Chicago, IL 60623
High-Yield Savings
2.98%
$5,000
▼
Rate0.00%
Min Deposit$5,000
Min Balance—
UpdatedMar 20, 2026
Details
Minimum of $5,000 not currently deposited at Huntington.
Farmers State Bank Elmwood, IL
Institution Rating:
F1.0 ★Texas Ratio: 195.74%
104 E Main St, Elmwood, IL 61529
Vacation Club Savings
2.95%
$25
▼
Rate2.95%
Min Deposit$25
Min Balance—
UpdatedMar 20, 2026
Details
Fidelity Bank & Trust (IA)
Institution Rating:
A+5.0 ★Texas Ratio: 1.72%
242 Wall St, East Dubuque, IL 61025
IRA Preferred Rate Savings
2.78%
$50,000
▼
Rate2.75%
Min Deposit$50,000
Min Balance—
UpdatedMar 25, 2026
Details
First Bank Creve Coeur, MO
Institution Rating:
A+5.0 ★Texas Ratio: 1.54%
4387 N Illinois St, Swansea, IL 62226
Icon High-Yield Savings
2.75%
$100
▼
Rate0.00%
Min Deposit$100
Min Balance—
UpdatedMar 18, 2026
Details
Farmers State Bank Elmwood, IL
Institution Rating:
F1.0 ★Texas Ratio: 195.74%
104 E Main St, Elmwood, IL 61529
Christmas Club Savings
2.70%
$25
▼
Rate2.70%
Min Deposit$25
Min Balance—
UpdatedMar 20, 2026
Details
Hanmi Bank
Institution Rating:
A+5.0 ★Texas Ratio: 2.11%
664 Raymond Dr, Naperville, IL 60563
Simple Savings
2.70%
$100
▼
Rate0.00%
Min Deposit$100
Min Balance—
UpdatedMar 20, 2026
Details
FNB of Okawville
Institution Rating:
A+5.0 ★Texas Ratio: 0.00%
203 E Walnut St, Okawville, IL 62271
Savings Deposit Acct.
2.68%
$0
▼
Rate2.65%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
$50 Minimum (effective 3/01/2025)
FNB of Okawville
Institution Rating:
A+5.0 ★Texas Ratio: 0.00%
203 E Walnut St, Okawville, IL 62271
IRA Savings Deposit Acct.
2.68%
$0
▼
Rate2.65%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
$50 Minimum (effective 3/01/2025)
Southern Bank
Institution Rating:
A+5.0 ★Texas Ratio: 2.61%
800 Washington Ave, Cairo, IL 62914
Platinum Savings
2.63%
$1,000
▼
Rate0.00%
Min Deposit$1,000
Min Balance—
UpdatedMar 25, 2026
Details
INB National Association
Institution Rating:
A+5.0 ★Texas Ratio: 2.04%
322 E Capitol Ave, Springfield, IL 62701
Structured Savings IRA
2.55%
$0
▼
Rate2.52%
Min Deposit$0
Min Balance—
UpdatedMar 20, 2026
Details
Daily Balances Of up to $4,999.99
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The Annual Percentage Yields (APYs) displayed are based on the highest APY offered for the specified deposit amount or less. Rates may change without prior notice.
Banks and Credit Unions: If you identify an incorrect rate or wish to request the removal of your institution’s data, please contact us here.
Banks and Credit Unions: If you identify an incorrect rate or wish to request the removal of your institution’s data, please contact us here.
Oak Brook, IL Savings Rate Trends
Compare local Oak Brook, IL savings rate quotes against the statewide average
Weekly savings rate averages tracked across our database of 8,500+ banks and credit unions — updated every evening.
High-Yield Savings — IL Avg
2.306%
▲ 1.083 from last week
Illinois high-yield savings rates rose 1.083 points this week to 2.306% APY, up from 1.223% last week.
Standard Savings — IL Avg
0.500%
▼ 0.075 from last week
Illinois standard savings rates fell 0.075 points this week to 0.500% APY, down from 0.575% last week.
As of Mar 26, 2026 •
Rate data sourced from 8,500+ monitored institutions
Powered by MonitorBankRates
Methodology & Data Sources
Direct-Sourced & Verified Savings Rate Data: We aggregate savings account rates for Oak Brook, Illinois directly from the official websites of banks and credit unions using our proprietary rate aggregation technology and a dedicated team of rate updaters. Every savings rate displayed on MonitorBankRates.com is highly accurate and trustworthy.
Local, Regional, and National Coverage: Our systems constantly monitor the market to provide a complete picture of available yields in Oak Brook, Illinois. We feature a comprehensive mix of institutions — from neighborhood credit unions and competitive regional banks to large national institutions available to savers in IL.
Daily Updates & Time-Stamped Accuracy: Our rate updaters verify and update savings rates daily. Because savings account yields can fluctuate rapidly, every product listed features its own specific “last updated” date, giving you complete transparency.
Frequently Asked Questions about Savings Accounts in Oak Brook, Illinois
What is a High-Yield Savings Account (HYSA)?
A High-Yield Savings Account (HYSA) typically pays significantly higher interest than standard accounts at national brick-and-mortar banks. These accounts, often found at online banks or local credit unions in Illinois, help your money grow faster through a higher APY.
Are savings accounts in Oak Brook, Illinois safe?
Yes, as long as the institution is FDIC insured (for banks) or NCUA insured (for credit unions). This provides federal protection for your deposits in Illinois up to $250,000 per depositor, per institution.
How often do savings rates change in Oak Brook, Illinois?
Savings rates are variable and can change at any time based on market conditions and Federal Reserve decisions. We update our local Illinois rate tables daily to ensure you see the most current high-yield options.
Do I need a minimum deposit to open a savings account?
It depends on the bank. Many online high-yield savings accounts have no minimum deposit requirement, while some traditional banks in Oak Brook, Illinois may require $25–$100 to open an account.
What is the difference between a Savings Account and a Money Market Account?
Both pay interest and are federally insured. Money Market Accounts (MMAs) often come with check-writing privileges or a debit card, making them more flexible, whereas standard savings accounts typically do not.
Are online banks better than local banks in Oak Brook, Illinois?
Online banks often offer higher APYs because they have lower overhead costs. However, local banks in Oak Brook, Illinois offer in-person customer service, which some customers prefer.
How do I open a savings account in Oak Brook, Illinois?
You can open a savings account online or in-person. You will generally need a government-issued ID, your Social Security number, and an initial deposit to get started.
Best Savings Rates in Oak Brook, Illinois
Here are recent savings rates observed in Oak Brook, Illinois and the surrounding area:
- Corporate America Family Credit Union
Business Prosperity Savings — 3.75% APY - PNC Bank
PNC High Yield Savings® — 3.25% APY - Providence Bank & Trust
Achieve More Savings — 1.65% APY - Republic Bank of Chicago
Commercial Savings — 0.10% APY - Fidelity Bank & Trust (IA)
Snap $tack Savings — 5.12% APY
Savings Rates reflect actual verified offers from banks and credit unions actively accepting deposits in Oak Brook, Illinois. Your final available rate may depend on deposit amount and daily market movements. Last Updated and Verified: March 25, 2026
