Best banks in Illinois range from long-standing regional names to national giants and high-yield online banks — and the right pick depends on whether you value local branches, the highest savings rate, or the biggest sign-up bonus. This guide rounds up the best banks in Illinois, the top credit unions, the online banks Illinois residents use most, and the bank bonuses worth grabbing in June 2026.
| Category | Good Options in Illinois |
|---|---|
| Regional banks | Wintrust Bank (150+ locations in Chicagoland), BMO Bank (headquartered in Chicago, 500+ branches), Heartland Bank and Trust Company (86 branches across Illinois), Byline Bank (Chicago-based), Fifth Third Bank (150+ Illinois branches) |
| National banks | Chase (300+ Illinois branches, largest by deposits at $127B), Bank of America, Wells Fargo, Huntington Bank (100+ Illinois branches) |
| Online banks | Ally Bank, SoFi, Discover, Capital One 360 |
| Credit unions | Alliant Credit Union (Chicago-based, 900K+ members nationwide), Consumers Credit Union (Illinois-based, up to 5.00% APY rewards checking), 1st MidAmerica Credit Union (Central and Southern Illinois), Earthmover Credit Union (Kendall and Kane counties) |
In This Guide:
Best Banks in Illinois
Top regional banks serving Illinois include:
- Wintrust Bank (150+ locations in Chicagoland)
- BMO Bank (headquartered in Chicago
- 500+ branches)
- Heartland Bank and Trust Company (86 branches across Illinois)
- Byline Bank (Chicago-based)
The largest bank by presence in Illinois is JPMorgan Chase ($127.08 billion in Illinois deposits).
Best for checking: Consumers Credit Union — up to 5.00% APY on balances up to $10,000 with qualifying activity (12 debit purchases + $500 direct deposit per month)
Best for savings: Alliant Credit Union — 3.01% APY high-rate savings (Illinois-headquartered); for top rates, online banks like Varo (5.00% up to $5K) and Bask Bank (4.10%) are available to IL residents
Regional banks often combine local branch access with competitive accounts, which is why they tend to score well with Illinois customers. Top high-yield savings accounts available to Illinois residents pay around 3.50% to 4.10% (top online high-yield savings accounts available to Illinois residents as of June 2026) in June 2026.
National Banks Available in Illinois
If you want a big branch and ATM network, the major national banks all operate in Illinois:
- Chase (300+ Illinois branches
- largest by deposits at $127B)
- Bank of America
- Wells Fargo
- Huntington Bank (100+ Illinois branches)
National banks are convenient but rarely pay the best savings rates — pair one with a high-yield online account for the best of both.
Best Credit Unions in Illinois
Well-regarded Illinois credit unions include:
- Alliant Credit Union (Chicago-based
- 900K+ members nationwide)
- Consumers Credit Union (Illinois-based
- up to 5.00% APY rewards checking)
- 1st MidAmerica Credit Union (Central and Southern Illinois)
Credit unions are member-owned and often beat banks on fees and savings rates, though membership may require living, working, or worshiping in a specific area.
Best Online Banks for Illinois Residents
Online banks have no branches but pay far higher savings rates and charge fewer fees. Popular options for Illinois residents:
💰 Get Free Bonus Alerts
Free · No spam · Unsubscribe anytime
- Ally Bank
- SoFi
- Discover
- Capital One 360
Bank Sign-Up Bonuses in Illinois
One bonus worth a look for Illinois residents right now: Huntington Bank up to $600 checking bonus (Platinum Perks Checking with $25K deposit); Associated Bank up to $600 checking bonus (with direct deposit, through June 30 2026); Chase typically offers $300 checking bonus in Illinois. Bonuses change often, so check our live list for the latest.
A sign-up bonus can be worth $100-$400 for opening an account and meeting a direct-deposit or balance requirement. Use our Bonus Yield Calculator to see the true annual return on any offer, and check that your paycheck qualifies with the Direct Deposit Checker.
How to Choose a Bank in Illinois
- Fees: Look for no monthly maintenance fee or an easy waiver.
- Savings rate (APY): Online and credit-union accounts usually win here.
- Access: Want branches? Favor a regional or national bank in Illinois.
- Bonus: A sign-up bonus is free money if you would open the account anyway.
- Insurance: Confirm FDIC (banks) or NCUA (credit unions) coverage.
Official Sources
- Illinois Department of Financial and Professional Regulation (IDFPR), Division of Banking: https://idfpr.illinois.gov/banking.html
- FDIC BankFind: fdic.gov
- NCUA (credit unions): ncua.gov
Other Illinois notes: Illinois is one of the strongest banking states in the U.S. — Chicago serves as a major financial hub with BMO Bank headquartered there. The state has 227 credit unions with branches and over 410 total. Wintrust operates a unique community banking model with 150+ locations across 15+ subsidiary bank brands in Chicagoland. Alliant Credit Union, headquartered near Chicago, is one of the largest credit unions in the country and is open to anyone who lives or works in select Illinois communities. Consumers Credit Union (also IL-based) offers some of the highest rewards checking APYs nationally (up to 5.00%).
Checking, Savings, and CDs Explained
Most Illinois banks offer the same core accounts:
- Checking — for everyday spending and direct deposit. Look for no monthly fee.
- Savings — for your emergency fund. Online banks pay the highest rates.
- Money market — a savings account with limited check-writing.
- CDs — lock money for a set term in exchange for a higher fixed rate.
A common setup for Illinois residents is a no-fee checking account at a local bank plus a high-yield savings account at an online bank.
How Bank Sign-Up Bonuses Work in Illinois
Banks pay cash bonuses — often $100 to $400 — to win new customers. To earn one you typically open a new checking or savings account, then meet a requirement such as receiving a set amount of direct deposit or keeping a minimum balance for a few months. The bonus is usually paid within 90 days. As long as you would open the account anyway, it is essentially free money. We track current offers open to Illinois residents on our listings page.
Best Banks in Illinois: Frequently Asked Questions
What is the best bank in Illinois? There is no single best bank — it depends on whether you value branches, the highest savings rate, or the biggest bonus. Compare a regional bank, a national bank, and an online bank before deciding.
Are credit unions better than banks in Illinois? Credit unions are member-owned and often charge lower fees and pay better rates, but you must be eligible to join and may have fewer branches.
Which bank has the best sign-up bonus? Bonuses change monthly. National and online banks usually offer the largest ones open to Illinois residents — check our live list.
Is my money safe? Yes — as long as your bank is FDIC-insured or your credit union is NCUA-insured, deposits are protected up to $250,000 per depositor.
Related Illinois Guides
- Illinois Crypto Laws Guide
- Illinois Crypto Tax Guide
- Best Banks by State
- Browse all current bank & crypto bonuses
This best banks in Illinois guide was last verified in June 2026.
Informational only — not financial, tax, or legal advice. Crypto and tax rules change frequently; verify current details with the official sources linked above or a licensed professional before acting.