If you are shopping an SBA 7(a) or conventional commercial loan in South Dakota, 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 South Dakota-headquartered banks doing the most commercial lending right now, using public Q1 2026 FFIEC call-report data. It is the open-book version of what the paid report does with far more inputs.
South Dakota's friendly charter rules drew big card banks to Sioux Falls, but everyday commercial lending still runs through farm-country community banks.
The 15 most active commercial lenders in South Dakota
Ranked by commercial and industrial (C&I) loans outstanding, Q1 2026. Bank names link to the live BankingLens scorecard.
| # | Bank | City | Assets | C&I share | ROA | Fit notes |
|---|---|---|---|---|---|---|
| 1 | Wells Fargo | Sioux Falls | $1.85T | 20.1% | 1.30% | National-scale lender, an active C&I book. |
| 2 | Citibank | Sioux Falls | $1.93T | 22.7% | 1.06% | Coast-to-coast balance sheet, an active C&I book. |
| 3 | Pathward | Sioux Falls | $7.1B | 90.7% | 4.00% | Mid-size regional, heavy C&I concentration. Top-decile returns. |
| 4 | Dacotah Bank | Aberdeen | $4.9B | 24.9% | 1.13% | Regional commercial bank, an active C&I book. |
| 5 | Bancorp Bank National Association, the | Sioux Falls | $9.9B | 10.0% | 2.87% | Mid-size regional, a modest C&I share. Top-decile returns. |
| 6 | First Bank & Trust | Brookings | $4.9B | 22.2% | 1.30% | Regional commercial bank, an active C&I book. CRE-heavy book. |
| 7 | First Dakota National Bank | Yankton | $3.3B | 11.8% | 1.49% | Mid-size regional, a modest C&I share. CRE-heavy book. |
| 8 | American Bank & Trust | Sioux Falls | $2.2B | 17.3% | 1.23% | Local commercial lender, a steady commercial book. |
| 9 | First National Bank in Sioux Falls, the | Sioux Falls | $2.1B | 17.3% | 1.08% | Community bank, a steady commercial book. |
| 10 | Cortrust Bank | Mitchell | $1.6B | 17.5% | 0.27% | Local commercial lender, a steady commercial book. CRE-heavy book. |
| 11 | First National Bank | Fort Pierre | $2.0B | 10.3% | 2.51% | Community bank, a modest C&I share. Top-decile returns. |
| 12 | Pioneer Bank & Trust | Belle Fourche | $986M | 19.4% | 1.62% | Small local lender, a steady commercial book. Top-decile returns. |
| 13 | Reliabank Dakota | Estelline | $758M | 20.5% | 1.25% | Small community bank, an active C&I book. |
| 14 | Bankstar Financial | Elkton | $358M | 17.1% | 1.25% | Small local lender, a steady commercial book. |
| 15 | Black Hills Community Bank | Rapid City | $496M | 10.4% | 1.73% | Small community bank, a modest C&I share. Top-decile returns. |
Assets and ratios are Q1 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 South Dakota-HQ lenders, Q1 2026. This is the single number our ranking leans on hardest.
How we ranked these
Three steps, all of them transparent. First, we took every bank headquartered in South Dakota. Second, 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 qualifying banks, 31 cleared that bar. Third, 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.
This is an honest, simplified proxy. It does not see a bank's actual SBA 7(a) origination volume (that lives in SBA FOIA data, not the call report), its appetite for your industry, or whether it funded forty SBA loans last quarter or zero. 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.
What South Dakota looks like for a borrower
South Dakota's friendly charter rules drew big card banks to Sioux Falls, but everyday commercial lending still runs through farm-country community banks.
On the numbers: South Dakota's 58 headquartered banks carry $3.85T in assets between them, the largest being Citibank of Sioux Falls at $1.93T. The median bank keeps 10.4% of its loan book in C&I credit, which is the pool the table below ranks.
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: Midwestern farm country by Pieter van de Sande on Unsplash, used here as a regional editorial image for South Dakota.