If you are shopping an SBA 7(a) or conventional commercial loan in Illinois, the bank you call first matters more than most borrowers think. A lender that already writes a lot of commercial credit and sits in your state is structurally likelier to say yes than a national name passing through. This page ranks the Illinois-headquartered banks doing the most commercial lending right now, using public Q2 2026 FFIEC call-report data. It is the open-book version of what the paid report does with far more inputs.
Chicago money looms over Illinois, but downstate community banks fund the grain, equipment, and small-manufacturer deals the big LaSalle Street names skip.
The 15 most active commercial lenders in Illinois
Ranked by commercial and industrial (C&I) loans outstanding, Q2 2026. Bank names link to the live BankingLens scorecard.
| # | Bank | City | Assets | C&I share | ROA | Fit notes |
|---|---|---|---|---|---|---|
| 1 | BMO Bank | Chicago | $255.0B | 31.6% | 0.15% | National-scale lender, heavy C&I concentration. Thin current returns. Top sectors funded in IL: Professional Services (3 loans), Construction (2 loans) |
| 2 | Cibc Bank USA | Chicago | $66.5B | 28.2% | 1.51% | Coast-to-coast balance sheet, an active C&I book. Return on assets above 1.5 percent. Loan book up 15% YoY. Top sectors funded in IL: Other Services (5 loans), Manufacturing (5 loans) |
| 3 | Lake Forest Bank & Trust Company | Lake Forest | $9.3B | 58.7% | 1.97% | Mid-size regional, heavy C&I concentration. Return on assets above 1.5 percent. Top sectors funded in IL: Accommodation/Food Service (3 loans), Administrative & Support (2 loans) |
| 4 | Wintrust Bank | Chicago | $9.6B | 37.5% | 1.96% | Regional commercial bank, heavy C&I concentration. Return on assets above 1.5 percent. Top sectors funded in IL: Accommodation/Food Service (8 loans), Professional Services (8 loans) |
| 5 | Busey Bank | Champaign | $18.1B | 21.0% | 1.33% | Large multi-state regional, an active C&I book. CRE-heavy book. Top sectors funded in IL: Health Care (11 loans), Manufacturing (11 loans) |
| 6 | Byline Bank | Chicago | $9.9B | 32.8% | 1.69% | Regional commercial bank, heavy C&I concentration. Return on assets above 1.5 percent. |
| 7 | Northbrook Bank & Trust Company | Northbrook | $6.4B | 48.4% | 1.47% | Mid-size regional, heavy C&I concentration. Built for commercial deals. Loan book up 9% YoY. |
| 8 | Hinsdale Bank & Trust Company | Hinsdale | $6.8B | 39.2% | 1.48% | Regional commercial bank, heavy C&I concentration. Built for commercial deals. Loan book up 16% YoY. |
| 9 | Barrington Bank & Trust Company | Barrington | $5.2B | 41.5% | 1.26% | Mid-size regional, heavy C&I concentration. Built for commercial deals. |
| 10 | Wheaton Bank & Trust Company | Wheaton | $4.8B | 47.0% | 1.58% | Regional commercial bank, heavy C&I concentration. Return on assets above 1.5 percent. Loan book up 11% YoY. |
| 11 | First Mid Bank & Trust | Mattoon | $9.1B | 21.7% | 1.19% | Mid-size regional, an active C&I book. CRE-heavy book. Loan book up 20% YoY. |
| 12 | Village Bank & Trust | Arlington Heights | $3.6B | 43.3% | 2.07% | Regional commercial bank, heavy C&I concentration. Return on assets above 1.5 percent. Loan book up 12% YoY. |
| 13 | Old Second National Bank | Aurora | $6.9B | 22.0% | 1.68% | Mid-size regional, an active C&I book. Return on assets above 1.5 percent. Loan book up 31% YoY. |
| 14 | Old Plank Trail Community Bank | New Lenox | $3.5B | 46.1% | 1.18% | Regional commercial bank, heavy C&I concentration. Built for commercial deals. Loan book up 9% YoY. |
| 15 | St. Charles Bank & Trust Company | Saint Charles | $3.7B | 41.6% | 1.43% | Mid-size regional, heavy C&I concentration. Built for commercial deals. Loan book up 12% YoY. |
Assets and ratios are Q2 2026 FFIEC call-report figures. ROA is annualized return on assets. A bank's headquarters city is shown; many lend statewide and beyond.
C&I lending muscle, ranked
Commercial and industrial loans outstanding for the top 10 Illinois-HQ lenders, Q2 2026. This is the single number our ranking leans on hardest.
How we ranked these
Four steps, all of them transparent. First, we took every bank headquartered in Illinois. Second, a capacity floor: we dropped every Illinois-headquartered bank under $500M in total assets, because a smaller balance sheet rarely anchors a primary SBA 7(a) relationship. Third, an active-originator floor: we kept only banks whose commercial and industrial (C&I) loans are at least 10 percent of the loan book (a bank that is 90 percent home mortgages is not your SBA lender, regardless of size). Of the banks clearing both floors, 68 made the active list. Fourth, we ranked them by C&I loan dollars outstanding, which already blends balance-sheet size with how committed a bank is to commercial credit, and kept the top 15. Where the call report reports it, the fit notes also flag year-over-year loan-book growth as a rough read on whether a bank is leaning into lending or pulling back; the FFIEC filing does not break out SBA or C&I growth on its own, so treat that as directional, not precise.
Smaller banks may also fund your loan but rank below the active list.
The SBA section below ranks separately: it counts the SBA 7(a) and 504 loans each lender actually made in Illinois, from SBA's own loan data, whatever state the lender is based in.
This table is an honest, simplified proxy. The call report does not show a bank's SBA volume or its appetite for your industry; the SBA section shows volume, but not which lender fits your deal. The $49 Borrower Assist report folds all of that in and ranks against your specific deal, not just your state. That is the part worth paying for.
Most active SBA lenders in Illinois
The lenders that made the most SBA 7(a) and 504 loans to Illinois businesses, federal fiscal year 2023 through June 30, 2026, counted from SBA's own loan-level data. National SBA platforms appear next to Illinois's own banks because they lend here too.
1,961 SBA loans in Illinois, $408.9M in total. Most often: Transportation & Warehousing, Accommodation/Food Service.
544 SBA loans in Illinois, $110.0M in total. Most often: Construction, Other Services.
372 SBA loans in Illinois, $104.6M in total. Most often: Construction, Professional Services.
323 SBA loans in Illinois, $407.3M in total. Most often: Retail Trade, Accommodation/Food Service.
265 SBA loans in Illinois, $39.3M in total. Most often: Transportation & Warehousing, Accommodation/Food Service.
247 SBA loans in Illinois, $83.8M in total. Most often: Accommodation/Food Service, Professional Services.
233 SBA loans in Illinois, $32.5M in total. Most often: Professional Services, Construction.
202 SBA loans in Illinois, $62.7M in total. Most often: Professional Services, Construction.
156 SBA loans in Illinois, $187.8M in total. Most often: Health Care, Other Services.
123 SBA loans in Illinois, $91.9M in total. Most often: Accommodation/Food Service, Construction.
Source: U.S. Small Business Administration 7(a) and 504 loan data, refreshed monthly. Ranked by number of loans. Lenders that have since merged count toward the bank that acquired them.
What Illinois looks like for a borrower
Chicago money looms over Illinois, but downstate community banks fund the grain, equipment, and small-manufacturer deals the big LaSalle Street names skip.
The state's banking base totals $770.2B in assets across 314 charters, topped by BMO Bank (Chicago) at $255.0B. Commercial appetite varies widely; the median Illinois bank runs a 11.3% C&I share, and BMO Bank leads on raw C&I dollars ($44.7B).
None of that tells you which of these banks will fund your specific deal. A $400,000 restaurant acquisition and a $4M owner-occupied warehouse purchase have different optimal lender lists even in the same state, and the ranking above does not split by loan size, industry, or collateral. Treat it as your starting shortlist, not your final answer.
How to use this list
- Start with the bank near you that has the strongest commercial profile, not just the closest branch. A lender with a real C&I book understands your deal faster.
- Ask for the SBA or commercial lending group directly. The general line routes business deals slowly.
- Have a one-page summary ready: use of funds, cash flow, collateral, owner credit, timeline. Banks decide whether to engage in the first ninety seconds.
- Run two banks in parallel, not five. Two real conversations close a loan; five waste everyone's time.
Hero photo: American farmland by benjamin lehman on Unsplash, used here as a regional editorial image for Illinois.