South Dakota Banks

South Dakota banks' return on assets reached 1.47% in Q1 2026, up 16 basis points from 1.31% in Q4 2025 and 15 basis points from 1.32% a year earlier—the highest profitability in the current series and 28 basis points above the national benchmark of 1.20%. The improvement is consistent across both timeframes: the QoQ gain of 16 basis points matches the YoY gain of 15 basis points, indicating a stable upward trajectory rather than a one-quarter spike. The cohort's profitability advantage reflects both margin strength and operational efficiency, with South Dakota institutions outperforming the national average on every profitability metric in the current quarter.

Net interest margin held stable at 4.09% in Q1 2026, down 4 basis points from 4.14% in Q4 2025 but up 3 basis points from 4.07% a year earlier. The QoQ compression is modest—well within normal quarterly volatility—while the YoY stability (3 basis points) confirms that South Dakota banks have maintained their 28-basis-point advantage over the national 3.82% NIM. The stability is notable given the sharp deposit growth acceleration (5.68% YoY versus 3.75% a year earlier): funding costs did not rise enough to compress NIM materially, suggesting disciplined deposit pricing or a favorable mix shift. The efficiency ratio improved to 60.80% in Q1 2026, down 17 basis points from 60.97% in Q4 2025 and 82 basis points from 61.63% a year earlier. The YoY improvement is the larger move, indicating sustained cost discipline rather than a single-quarter windfall. South Dakota banks operate 334 basis points more efficiently than the national 64.14%, translating to $3.34 of savings per $100 of revenue. The combination of stable NIM and improving efficiency drove the 16-basis-point ROA gain quarter-over-quarter.

Specialization patterns within the national data provide context: Credit Card specialists post a 13.80% NIM (999 basis points above the national 3.82%) and a 54.43% efficiency ratio (971 basis points below national), while Mortgage specialists lag at 76.96% efficiency (1,281 basis points above national). South Dakota's 4.09% NIM and 60.80% efficiency ratio suggest a Commercial or Agricultural specialization tilt—both categories operate below the national efficiency ratio (Commercial at 64.09%, Agricultural at 59.51%) and above the national NIM (Commercial at 3.92%, Agricultural at 3.84%). The cohort's profitability is structurally sound: ROA rose despite modest NIM compression, indicating that cost discipline and balance-sheet leverage (the 71.70% LDR implies lower funding costs on the excess deposit base) are sustaining returns. If the efficiency ratio continues its current pace of improvement (82 basis points YoY), South Dakota banks will widen their operational advantage further.

South Dakota banks' asset growth reached 5.41% year-over-year in Q1 2026, decelerating from 5.96% in Q4 2025 but accelerating sharply from 3.31% in Q1 2025. The year-over-year acceleration of 63.53 percentage points marks a significant expansion from the prior-year pace, while the quarter-over-quarter deceleration of 9.27 percentage points suggests the growth surge peaked in Q4 2025 and moderated into Q1 2026. The cohort's 5.41% asset growth sits 25 basis points above the national 5.15%, indicating South Dakota banks are expanding slightly faster than the broader industry. The growth is deposit-led: funding rose 5.68% year-over-year, outpacing asset growth by 27 basis points and compressing the loan-to-deposit ratio.

Loan growth reached 5.86% year-over-year in Q1 2026, decelerating modestly from 6.03% in Q4 2025 but accelerating from 5.27% in Q1 2025. The year-over-year acceleration of 11.30 percentage points is smaller than the deposit acceleration of 51.34 percentage points, creating a widening gap between funding availability and loan deployment. The cohort's 5.86% loan growth sits 34 basis points below the national 6.20%, indicating South Dakota banks are adding loans slightly slower than the broader industry despite their deposit franchise strength. The QoQ deceleration of 2.78 percentage points is modest—well within normal quarterly volatility—but the YoY comparison reveals a structural shift: loan growth accelerated only 11.30 percentage points year-over-year, while deposit growth accelerated 51.34 percentage points, a 40-percentage-point gap. The result is excess liquidity accumulation, compressing the LDR from 71.46% a year earlier to 71.70% in Q1 2026.

Deposit growth reached 5.68% year-over-year in Q1 2026, accelerating from 4.92% in Q4 2025 and from 3.75% in Q1 2025. The year-over-year acceleration of 51.34 percentage points is the largest growth move in the current series, indicating a sharp reacceleration in deposit franchise expansion. The quarter-over-quarter acceleration of 15.36 percentage points confirms the trend is strengthening, not plateauing. South Dakota's 5.68% deposit growth sits 66 basis points above the national 5.02%, the widest deposit-growth advantage among the three growth metrics. The deposit acceleration outpaced both asset growth (5.41%) and loan growth (5.86%), mechanically compressing the LDR and building excess liquidity. The growth pattern is unbalanced: funding is abundant, but loan deployment is lagging, leaving South Dakota banks with $139 of deposits for every $100 of loans (implied by the 71.70% LDR). If deposit growth continues to outpace loan growth at the current 82-basis-point spread, the LDR will compress further, pressuring NIM unless excess liquidity is redeployed into higher-yielding securities or loan demand accelerates.

South Dakota banks' delinquency rate reached 0.55% in Q1 2026, stable from 0.56% in Q4 2025 but up 36 basis points from 0.19% in Q1 2025. The year-over-year increase marks a significant deterioration from the exceptionally low 0.19% level a year earlier, though the quarter-over-quarter stability (down 1 basis point) suggests credit quality has plateaued rather than continuing to worsen. The cohort's 0.55% delinquency rate sits 15 basis points below the national 0.70%, indicating South Dakota banks maintain a credit-quality advantage despite the year-over-year rise. The 36-basis-point YoY increase is the largest risk move in the current series, reflecting either a normalization from unsustainably low pandemic-era delinquency or emerging stress in specific loan portfolios.

The nonperforming asset ratio reached 0.33% in Q1 2026, stable from 0.38% in Q4 2025 (down 5 basis points) but up 19 basis points from 0.14% in Q1 2025. The year-over-year pattern mirrors delinquency: a sharp increase from an exceptionally low base, followed by quarter-over-quarter stability. South Dakota's 0.33% NPA ratio sits 17 basis points below the national 0.51%, indicating the cohort's asset-quality cushion is wider for NPAs than for delinquency (17 basis points versus 15 basis points). The QoQ stability on both delinquency and NPAs—down 1 basis point and 5 basis points, respectively—suggests the credit normalization that began in 2025 has stabilized in Q1 2026. The relationship between the two metrics is consistent: the 0.55% delinquency rate implies 55 basis points of loans are past due, while the 0.33% NPA ratio implies 33 basis points are nonperforming, a 22-basis-point gap that reflects loans in early-stage delinquency but not yet classified as nonperforming.

Tier 1 capital reached 15.33% in Q1 2026, up 24 basis points from 15.09% in Q4 2025 and 10 basis points from 15.23% in Q1 2025. The improvement is consistent across both timeframes, indicating sustained capital accumulation rather than a one-quarter windfall. South Dakota banks' 15.33% Tier 1 ratio sits 107 basis points above the national 14.26%, providing a substantial cushion above the 8.0% regulatory well-capitalized threshold for Tier 1 risk-based capital. The capital build occurred despite 5.41% asset growth, indicating retained earnings and profitability (1.47% ROA) are outpacing balance-sheet expansion. The risk profile is stable: delinquency and NPAs plateaued quarter-over-quarter after rising sharply year-over-year, while capital strengthened on both timeframes. The 0.55% delinquency rate remains well below the national 0.70%, and the 15.33% Tier 1 ratio provides ample capacity to absorb credit losses if delinquency resumes its upward trajectory.

South Dakota banks' loan-to-deposit ratio fell to 71.70% in Q1 2026, down 142 basis points from 73.12% in Q4 2025 but up 24 basis points from 71.46% a year earlier. The quarter-over-quarter decline marks a shift toward greater liquidity as deposit growth outpaced loan growth, while the year-over-year increase reflects a gradual normalization from the pandemic-era liquidity surplus. The cohort's LDR sits 467 basis points below the national benchmark of 76.38%, indicating a conservative lending posture and strong deposit franchise. The QoQ move was driven by deposit acceleration—funding grew 5.68% year-over-year in Q1 2026 versus 4.92% in Q4 2025, a 15.36 percentage-point acceleration—while loan growth decelerated modestly from 6.03% to 5.86% over the same period. Year-over-year, the pattern is more pronounced: deposit growth accelerated 51.34 percentage points (from 3.75% to 5.68%), while loan growth accelerated only 11.30 percentage points (from 5.27% to 5.86%). The result is a widening gap between funding availability and loan deployment, compressing the LDR mechanically.

Noninterest-bearing deposit share declined to 20.33% in Q1 2026, down 22 basis points from 20.55% in Q4 2025 and 23 basis points from 20.57% a year earlier. The decline is consistent with national trends—South Dakota's NIB share sits 126 basis points below the national 21.60%—and reflects modest migration to interest-bearing products as depositors seek yield. Net interest income as a percentage of revenue fell sharply quarter-over-quarter, from 1.02% in Q4 2025 to 0.27% in Q1 2026, though the year-over-year comparison is stable (0.27% in both Q1 2025 and Q1 2026). The QoQ compression likely reflects seasonal revenue mix effects rather than structural NII deterioration, given that net interest margin held stable at 4.09% over the same period. The cohort's NII revenue share sits 5 basis points below the national 0.32%.

The engagement picture is mixed: deposit franchise strength is unambiguous—funding growth accelerated sharply year-over-year, outpacing the national 5.02% by 66 basis points—but loan deployment lagged, compressing the LDR and leaving the cohort with excess liquidity. The 71.70% LDR implies South Dakota banks are funding $100 of loans with $139 of deposits, compared to the national $131. This conservative posture supports profitability (lower funding costs on the excess deposit base) but may signal limited loan demand or heightened credit selectivity. If deposit growth continues to outpace loan growth at the current 82-basis-point spread (5.68% versus 5.86%), the LDR will compress further, pressuring NIM unless excess liquidity is redeployed into higher-yielding securities.