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Profitability · Illinois

US Banks with Highest Net Interest Margin (NIM) in Illinois

Ranked among banks headquartered in Illinois. Re-ranked 1-100 within the state from the same national ranking population.

#1 Net Interest Margin (NIM): FIRST BANK AND TRUST COMPANY OF ILLINOIS — 5.95% . Net Interest Margin (NIM) measures the spread between interest earned on assets and interest paid on liabilities — the core unit economics of a commercial bank.

Ranked: 280 banks with reported data Showing: Top 100 Source: FFIEC call reports (Q1 2026) What is this metric? See the US Banks with … glossary entry Go deeper: What Is Net Interest Margin? A Bank Profitability Guide
# Bank HQ US Banks with … Total Assets
1 First Bank and Trust Company of Illinois Palatine , IL 5.95% $221.5M
2 Farmers State Bank of Alto Pass, ILL. Alto Pass , IL 5.85% $356.7M
3 Servbank, N.A. Oswego , IL 5.50% $1.72B
4 First Federal Savings Bank of Champaign-urbana Champaign , IL 5.45% $202.0M
5 Central State Bank Clayton , IL 5.33% $178.1M
6 Grand Ridge National Bank Wheaton , IL 5.30% $427.5M
7 Legence Bank Eldorado , IL 5.20% $648.3M
8 The Gifford State Bank Gifford , IL 5.19% $189.6M
9 Old Second National Bank Aurora , IL 5.09% $6.85B
10 Town and Country Bank Midwest Quincy , IL 5.05% $286.6M
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11 Fwbank Chicago , IL 5.03% $202.3M
12 Grundy Bank Morris , IL 4.98% $374.7M
13 Peoples Bank & Trust Pana , IL 4.87% $611.5M
14 Waterman Bank Waterman , IL 4.77% $172.4M
15 State Street Bank and Trust Company Quincy , IL 4.76% $351.9M
16 National Bank of ST. Anne Saint Anne , IL 4.76% $144.0M
17 Burling Bank Chicago , IL 4.70% $237.8M
18 Evergreen Bank Group Oak Brook , IL 4.69% $1.42B
19 Eagle Valley Bank Griggsville , IL 4.66% $229.7M
20 Community First Bank of the Heartland Mount Vernon , IL 4.60% $270.1M
21 Municipal Trust and Savings Bank Bourbonnais , IL 4.58% $363.0M
22 Smartbiz Bank, N.A. Northbrook , IL 4.54% $205.0M
23 Farmers National Bank of Griggsville Griggsville , IL 4.52% $154.6M
24 State Bank of Whittington Benton , IL 4.52% $178.9M
25 First Community Bank and Trust Beecher , IL 4.52% $202.5M
26 Princeville State Bank Princeville , IL 4.48% $120.4M
27 First State Bank of Beecher City Beecher City , IL 4.46% $113.5M
28 Murphy-wall State Bank and Trust Company Pinckneyville , IL 4.43% $207.7M
29 Liberty Bank Liberty , IL 4.41% $192.4M
30 Buena Vista National Bank Chester , IL 4.40% $336.5M
31 Byline Bank Chicago , IL 4.39% $9.89B
32 Brickyard Bank Lincolnwood , IL 4.39% $165.8M
33 Time Bank Park Ridge , IL 4.37% $730.6M
34 Longview Bank Ogden , IL 4.36% $680.4M
35 Bankchampaign, N.A. Champaign , IL 4.36% $256.6M
36 Hoyne Savings Bank Chicago , IL 4.33% $477.8M
37 Petefish, Skiles & Company Virginia , IL 4.31% $502.5M
38 First Neighbor Bank, N.A. Toledo , IL 4.29% $739.8M
39 First Eagle Bank Chicago , IL 4.29% $623.5M
40 Metropolitan Capital Bank & TrustFailed Chicago , IL 4.27% $235.5M
41 First Federal Savings and Loan Association of Central Illinois, S.B. Shelbyville , IL 4.26% $226.8M
42 Heartland Bank and Trust Company Bloomington , IL 4.24% $6.77B
43 Iuka State Bank, the Salem , IL 4.23% $136.2M
44 Ipava State Bank Lewistown , IL 4.23% $215.1M
45 American Metro Bank Chicago , IL 4.23% $117.9M
46 First National Bank of Carmi, the Carmi , IL 4.21% $632.4M
47 Forest Park National Bank and Trust Company Forest Park , IL 4.20% $320.4M
48 Casey State Bank Casey , IL 4.19% $506.4M
49 West Central Bank Ashland , IL 4.17% $237.9M
50 First National Bank of Sparta, the Sparta , IL 4.16% $114.2M
51 First Secure State Bank Wonder Lake , IL 4.16% $304.6M
52 First National Bank in Pinckneyville Pinckneyville , IL 4.15% $139.3M
53 Pan American Bank & Trust Melrose Park , IL 4.15% $539.4M
54 Frederick Community Bank, the Paxton , IL 4.14% $197.6M
55 Great Rivers Bank Barry , IL 4.14% $196.2M
56 First National Bank of Brookfield Brookfield , IL 4.13% $428.0M
57 Bank of Springfield Springfield , IL 4.12% $1.95B
58 First State Bank of Campbell Hill Campbell Hill , IL 4.12% $161.0M
59 Goodfield State Bank Goodfield , IL 4.12% $284.2M
60 Peoples National Bank, N.A. Mount Vernon , IL 4.10% $2.01B
61 Providence Bank & Trust South Holland , IL 4.10% $1.56B
62 First Security Bank Mackinaw , IL 4.08% $148.9M
63 First National Bank of Nokomis Nokomis , IL 4.05% $182.7M
64 Farmers and Merchants National Bank of Nashville, the Nashville , IL 4.05% $280.0M
65 Republic Bank of Chicago Oak Brook , IL 4.05% $2.54B
66 Community State Bank Galva , IL 4.01% $403.9M
67 Iroquois Farmers State Bank Iroquois , IL 3.99% $167.5M
68 Farmers State Bank Pittsfield , IL 3.98% $358.1M
69 Farmers State Bank & Trust CO. Mount Sterling , IL 3.96% $131.0M
70 Bank of Pontiac Pontiac , IL 3.96% $1.20B
71 Trustbank Olney , IL 3.95% $636.3M
72 Home State BANK/N.A. Crystal Lake , IL 3.95% $778.1M
73 American Commercial Bank & Trust, N.A. Ottawa , IL 3.95% $2.04B
74 First National Bank of Arenzville, the Arenzville , IL 3.94% $157.6M
75 Fisher National Bank, the Fisher , IL 3.94% $369.3M
76 Prairie State Bank & Trust Springfield , IL 3.94% $806.4M
77 Amalgamated Bank of Chicago Chicago , IL 3.93% $1.28B
78 Warren-boynton State Bank New Berlin , IL 3.93% $237.6M
79 Wintrust Private Trust Company, N.A. Lake Forest , IL 3.93% $136.7M
80 Signature Bank Rosemont , IL 3.93% $1.95B
81 Itasca Bank & Trust CO. Itasca , IL 3.92% $765.5M
82 Midamerica National Bank Canton , IL 3.91% $662.2M
83 Midland States Bank Effingham , IL 3.90% $6.54B
84 Prairie Community Bank Marengo , IL 3.90% $191.0M
85 Belmont Bank & Trust Company Chicago , IL 3.90% $1.03B
86 Citizens National Bank of Albion Albion , IL 3.89% $353.4M
87 First State Bank and Trust Monticello , IL 3.89% $507.0M
88 Cornerstone National Bank & Trust Company Palatine , IL 3.89% $1.02B
89 Central Savings, F.S.B. Chicago , IL 3.88% $118.6M
90 Better Banks Peoria , IL 3.88% $425.9M
91 1st Equity Bank Skokie , IL 3.87% $126.5M
92 American Community Bank & Trust Woodstock , IL 3.87% $1.17B
93 First National Bank in Tremont, the Tremont , IL 3.86% $196.3M
94 First Southern Bank Marion , IL 3.86% $1.05B
95 State Bank of Bement Bement , IL 3.86% $185.1M
96 Clay City Banking CO., the Clay City , IL 3.86% $256.2M
97 Security Savings Bank Monmouth , IL 3.86% $250.3M
98 Wintrust Bank, N.A. Chicago , IL 3.86% $9.28B
99 First Secure Bank and Trust CO. Palos Hills , IL 3.84% $395.4M
100 Sauk Valley Bank & Trust Company Sterling , IL 3.83% $748.5M

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All data sourced from the most recent FFIEC call report filings, refreshed each quarter as new filings are processed. This leaderboard excludes banks with total assets under $100,000K to filter out anomalous micro-bank ratios. See /data-updates/ for the current data freshness window.

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