Mortgage lender · Aurora, IL · LEI B94HV8SXGDD3J5XESU08

Old Second National Bank review: approval odds, rates and grade (2025)

Old Second National Bank earns a B, better than most mid-size mortgage lenders. It turned down 13.8% of the applications it decided on in 2025, which ranks in the 39th percentile for approval odds. Its median loan was priced 0.10 points above the average prime offer rate, ranking in the 73rd percentile on pricing. Compared against 581 mid-size mortgage lenders using 2025 HMDA filings.

1.6kApplications2025
72.6%Originatedof applications
13.8%Decision denial ratenational 22.6%
7.13%Median ratenational 6.63%
$336MLoan volume35 states

Old Second National Bank at a glance, 2025

Every figure is from the lender's own HMDA filing. "vs national" compares with all lenders combined.

12.0%Denial rate (all applications)-5.97 pts vs national
13.8%Denial rate (decided applications)-8.84 pts vs national
72.6%Origination rate+14.54 pts vs national
7.7%Withdrawn by applicant
5.0%Closed for incompleteness
7.13%Median interest rate+0.50 pts vs national
0.10Median rate spread (pts over APOR)-0.15 pts vs national
$135,000Median loan amount
$4,889Median total loan costs
$113kMedian applicant income
64%Median loan-to-value
0High-cost (HOEPA) loans

How the B grade breaks down

Each component is a percentile rank among 581 mid-size mortgage lenders. Higher is better. Components the lender does not report are left out and the weights redistributed.

Approval oddsdecision denial rate, weight 45%

39th13.8% denied

Pricingmedian rate spread over APOR, weight 30%

73rd0.10 pts

Processwithdrawn + incomplete share, weight 15%

71st12.6%

Closing coststotal loan costs ÷ loan amount, weight 10%

13th3.62% of loan

Trend, 2023–2025

YearApplicationsOriginatedDenial rateDecision denialMedian rateVolume
20231,16783111.6%13.5%8.00%$185M
20241,1598568.9%10.3%8.25%$191M
20251,6151,17212.0%13.8%7.13%$336M

What Old Second National Bank lends

Applications by purpose and loan type in 2025, with the denial rate for each. A lender's mix explains a lot of its headline rate: HELOCs and FHA loans are denied far more often than conventional purchase loans.

By loan purpose

Home purchase 557 34% · 11.9% denied
Refinance 111 7% · 9.0% denied
Cash-out refinance 323 20% · 11.2% denied
Home improvement 68 4% · 8.8% denied
Other / HELOC 556 34% · 13.7% denied

By loan type

Conventional 1,591 99% · 11.5% denied
FHA 22 1% · 50.0% denied
VA 2 0% · 0.0% denied

Also: 766 home-equity lines, 0 reverse mortgages, 199 manufactured homes, 84 investment properties.

Why Old Second National Bank denies applications

Primary reason reported for each of the 194 denials in 2025. Lenders can cite up to four reasons; this is the first one listed.

Debt-to-income ratio 61 45%
Credit history 41 30%
Collateral 15 11%
Other 12 9%
Unverifiable information 6 4%
Employment history 2 1%

How these reasons compare nationally →

Who gets approved at Old Second National Bank

Decision denial rate by applicant profile. Groups with fewer than 20 applications are omitted.

Applicant incomeApplicationsOriginatedDecision denial rate
Under $50k1336136.5%
$50k – $100k51933418.9%
$100k – $150k37328411.5%
$150k – $250k3122625.3%
Over $250k1921635.6%
Applicant ageApplicationsOriginatedDecision denial rate
Under 25251714.3%
25–3418513312.7%
35–4424818013.9%
45–5429321911.5%
55–6436226116.9%
65–7430421314.9%
Over 7414510511.5%

Where Old Second National Bank lends

35 states and 159 counties in 2025. Click a state for the lender's full record there.

StateApplicationsOriginatedDenial rateMedian rateRank in state
Illinois1,3511,0469.8%7.25%#65
New York411536.6%#350
Arizona382518.4%6.88%#344
Michigan291217.2%7.25%#395
Florida281317.9%6.63%#698
Pennsylvania15420.0%#635
Wisconsin14120.0%6.94%#453
Indiana1367.7%6.63%#516
New Jersey11345.5%#518
Ohio9333.3%#637
Massachusetts7157.1%#491
Washington7414.3%6.75%#502
Maine6166.7%#269
Idaho5320.0%#338
New Hampshire5220.0%#330

Frequently asked questions

Old Second National Bank denied 13.8% of the applications it decided on in 2025. The national figure across all lenders was 22.6%. On approval odds it ranks in the 39th percentile of mid-size mortgage lenders.

The most common reason Old Second National Bank gave in 2025 was "debt-to-income ratio", cited on 44.5% of its denials. Lenders report up to four reasons per denial to the CFPB; the full breakdown is on this page.

The median interest rate on loans Old Second National Bank originated in 2025 was 7.13%, and its median rate spread over the average prime offer rate was 0.10 points. Rates on this page are what borrowers actually got, not advertised rates.

In 2025, 34% of its applications were for home purchases, 27% for refinancing (including cash-out), and 39% for home improvement or other purposes. By loan type: 99% conventional, 1% FHA, 0% VA.

Every figure on this page comes from the Home Mortgage Disclosure Act (HMDA) Loan/Application Register published by the CFPB, which lenders are required by federal law to file. We add the grade and the comparisons; we do not add facts.

About this data. HMDA data is published once a year by the CFPB. The current release covers applications acted on in calendar year 2025. Figures describe applications the lender acted on, including loans it later sold. Interest rates and costs are medians on originated loans only; some depository institutions are exempt from reporting pricing fields, which is why a few cells read "—". MortgageGrades is not affiliated with Old Second National Bank. Data sources · Methodology