First Interstate BancSystem (FIBK) Q2 2025: CET1 Rises to 13.43% as Balance Sheet Optimization Accelerates

July 30, 2025 | By EarningsIQ Research

First Interstate BancSystem’s second quarter centered on capital strength and deliberate balance sheet reshaping, with a pronounced focus on core market density and expense discipline. Management’s actions—branch divestitures, loan portfolio runoff, and credit card outsourcing—signal a pivot to organic growth and sustainable margin improvement. Guidance for high single-digit net interest income growth in 2026, despite near-term loan contraction, sets a clear path for future profitability and capital deployment flexibility.

Summary

• Capital Flexibility Expands: CET1 ratio builds further, providing optionality for capital deployment.
• Margin Tailwinds from Asset Repricing: Loan and securities repricing drive net interest margin improvement despite lower loan balances.
• Expense Management Tightens: Reduced expense guidance and ongoing branch optimization sharpen the efficiency focus into 2026.

Performance Analysis

First Interstate BancSystem’s quarter was marked by a deliberate contraction in loan balances as management executed on its strategy to exit non-core exposures and refocus the franchise. The bank reported a sequential increase in net interest income, driven by lower funding costs and improved asset yields, even as average loan balances declined. Net interest margin (NIM) expanded by 12 basis points to 3.26% (excluding purchase accounting), benefiting from ongoing loan repricing and a favorable funding mix as short-term borrowings fell sharply.

Non-interest income was muted by a $7.3 million valuation allowance tied to loans moving to held-for-sale in the Arizona and Kansas branch transaction, partially offset by a $4.3 million gain from outsourcing the consumer credit card portfolio. Non-interest expense declined meaningfully, reflecting lower payroll taxes and incentive compensation, as well as management’s ongoing cost discipline. Credit quality remained stable overall, with net charge-offs at 14 basis points, though criticized loans rose mainly due to slower lease-up in multifamily. The CET1 ratio rose to 13.43%, with further accretion expected from the pending branch sale.

• Balance Sheet Reshaping: Loan balances contracted $1 billion, driven by strategic exits, loan sales, and runoff of indirect lending and credit card portfolios.
• Deposit Profile Stability: Deposits declined modestly, but the franchise’s deposit base remains low-cost, granular, and anchored in growth markets.
• Expense Leverage Emerges: Non-interest expense guidance was cut to 0%-1% growth for 2025, from 2%-4% previously, underscoring tight cost management.

While near-term loan growth is subdued, management’s actions have set the stage for margin and earnings improvement, with strong capital and liquidity providing strategic flexibility.

Executive Commentary

Strategic Positioning

1. Core Market Density and Deposit Franchise

93% of deposits are in markets where FIBK holds top 10 share, and about 70% are in above-average growth areas. This granular, low-cost deposit base is a strategic asset, supporting both margin stability and future organic growth. The bank’s network provides a durable funding advantage in a competitive landscape.

2. Balance Sheet Optimization and Asset Mix Shift

Management executed on several fronts: exiting indirect lending, outsourcing consumer credit cards, and advancing the Arizona and Kansas branch transaction. These moves reduced risk, improved capital ratios, and shifted the asset mix toward higher-yielding, relationship-based lending. Near-term, more investable funds will be allocated to securities, with a focus on short-duration, low credit risk instruments, until loan growth resumes.

3. Expense Rationalization and Branch Network Review

Expense discipline is a clear priority, with non-interest expense guidance cut and further branch consolidation anticipated into 2026. Management is balancing cost saves with targeted investment in frontline talent, aiming to support future growth without sacrificing efficiency.

4. Asset Quality Vigilance Amid Multifamily Headwinds

While net charge-offs remain low, criticized loans increased mainly due to slower lease-up in multifamily projects. Management’s proactive credit review and collateral confidence are offsetting some concern, but the sector remains a watchpoint as lease-up timelines extend.

5. Capital Optionality and Shareholder Returns

CET1 capital is building, with the branch sale expected to add another 40 basis points. Management is evaluating all capital deployment options—organic growth, dividends, share buybacks, and balance sheet restructuring—while M&A remains off the table. This flexibility is a key lever for future value creation.

Key Considerations

FIBK’s second quarter was defined by assertive moves to streamline the franchise, strengthen the balance sheet, and set up for margin-driven earnings growth. The following considerations frame the investment context:

Key Considerations:

• Loan Book Reset Nears Completion: Most deliberate runoff is behind, with future loan declines expected to moderate and a pivot to organic growth in sight.
• Margin Expansion from Asset Repricing: Fixed and adjustable rate loan repricing, along with new securities purchases at attractive yields, will support NIM improvement into 2026.
• Expense Base Under Tight Control: Lowered expense guidance and ongoing branch network review provide further efficiency levers.
• Capital Deployment Flexibility: Surplus capital enables a range of shareholder return options, with management prioritizing organic growth but keeping buybacks and special dividends in view.
• Credit Quality Watchpoint: Multifamily lease-up delays have driven criticized loan increases, but management maintains confidence in collateral and guarantor strength.

Risks

Loan growth remains a near-term headwind, with asset runoff and muted demand weighing on earning asset levels until late 2025. Multifamily credit exposure is a notable risk as lease-up timelines extend, potentially elevating criticized assets further. Sector-wide competition for quality loans and the risk of further economic slowdown could challenge margin and growth targets. Regulatory shifts or unexpected deposit outflows could also pressure the low-cost funding base.

Forward Outlook

For Q3 2025, FIBK guided to:

• Modestly lower loan balances, with stabilization expected by Q4 2025
• Continued net interest margin expansion, targeting 3.4% (excluding purchase accounting) by Q4

For full-year 2025, management maintained guidance:

• Net interest income supported by margin lift despite lower average loans
• Non-interest expense growth trimmed to 0%-1%

Looking to 2026, management expects:

• High single-digit net interest income growth, assuming flat loan balances and ongoing margin improvement
• Further capital accretion from the branch transaction and ongoing expense discipline

Takeaways

FIBK’s quarter was not about growth, but about laying the groundwork for future profitability, capital flexibility, and operational efficiency. The franchise’s core deposit strength and disciplined asset repricing are set to drive margin expansion, while expense controls and capital optionality position the bank for multiple paths to shareholder value.

• Balance Sheet Reset Unlocks Margin Upside: Strategic exits and asset mix shifts have positioned FIBK for improved profitability as asset yields rise and funding costs fall.
• Capital Strength Is a Strategic Lever: Surplus capital opens the door to enhanced returns, with management weighing all deployment options as organic growth resumes.
• Credit and Loan Growth Remain Key Watchpoints: Multifamily exposure and muted loan demand are near-term risks, but management’s proactive stance and strong deposit franchise underpin the long-term thesis.

Conclusion

FIBK’s Q2 2025 was a transitional quarter, emphasizing prudence and positioning over immediate growth. As the balance sheet reset nears completion and capital builds, the bank’s core funding and disciplined execution give it multiple levers for value creation heading into 2026.

Industry Read-Through

FIBK’s actions reflect a broader regional banking trend toward balance sheet simplification, core market focus, and capital conservation amid tepid loan demand and persistent credit watchpoints. The pivot to margin-driven earnings growth, expense control, and capital flexibility is likely to be echoed across mid-sized banks. Multifamily credit vigilance and the strategic use of surplus capital will remain key differentiators in the sector, as competition for granular deposits and relationship-based lending intensifies.

FIBK Financials Regional Banking Balance Sheet Optimization Deposit Franchise Expense Management Capital Allocation