Credit Availability Index:
How Open Is the Lending Window?

Executive Summary

A two-tier credit market has formed in early 2026. Banks are lending more aggressively than at any point in the past year, but the expansion is splitting along firm size: large and mid-sized firms face easing standards (5.3% net tightening, down from 18.5%), while small firms face increasing restriction (8.9% net tightening, rising). The lending window is wide open for strong borrowers and narrowing for everyone else.

• Commercial bank business loans reached $2,789.8B in February 2026, up 4.4% year-over-year, with the fastest growth concentrated in the most recent six months.
• The Chicago Fed National Financial Conditions Index moved from -0.558 to -0.475 over eight weeks, a tightening shift of +0.083 that signals rising costs even while conditions remain technically loose.
• Business loan delinquency rose to 1.34% in Q4 2025, the highest level in five quarters, while charge-offs held at 0.55%.
• SLOOS data reveals a two-tier market: net tightening for large and mid-sized firms fell to 5.3%, while small firms face 8.9% net tightening with flat demand.

Key Takeaways

• Bank business lending grew $118.5B year-over-year to $2,789.8B in February 2026, with the most recent six months accounting for $97.6B of that growth, a clear acceleration in credit supply.
• Financial conditions are still loose by historical standards (NFCI at -0.475), but the eight-week trend is moving toward zero, meaning the cost and availability of credit are gradually tightening.
• A two-tier credit market has formed: banks eased C&I standards for large and mid-sized firms to 5.3% net tightening while increasing tightening for small firms to 8.9%, and small-firm loan demand registered at 0.0% net change, suggesting smaller borrowers may be self-selecting out of the market.
• Business loan delinquency has risen in four of the last five quarters, from 1.18% in Q3 2024 to 1.34% in Q4 2025, creating a feedback loop where rising defaults justify tighter standards for smaller borrowers.
• The lending window is open for strong borrowers with established banking relationships and documented cash flow; it is narrowing for firms with thin credit files, limited collateral, or CRE-dependent balance sheets.

Credit Supply: Bank Lending Volume

Commercial bank business loans on the books reached $2,789.8B in February 2026, up $118.5B (+4.4%) from February 2025. The trajectory matters as much as the level: of that $118.5B annual increase, $97.6B accumulated in just the last six months (October 2025 through February 2026), representing a sharp acceleration after a largely flat stretch from March through September 2025.

The month-over-month pattern tells the story. From January 2025 through July 2025, bank business lending fluctuated in a narrow band between $2,664.3B and $2,685.3B, a seven-month span with only $21B of net movement. Starting in August, the trend broke higher, and from October onward the gains steepened, adding $50.3B in January alone and another $50.3B in February. Banks are deploying capital more aggressively into business lending.

Commercial Real Estate lending tells a different story. CRE loans on bank balance sheets reached $5,763.3B in February 2026, growing approximately 1.6% year-over-year, less than half the pace of business lending. The divergence suggests that banks are channeling new lending capacity toward C&I and operating business credit rather than property-backed exposures, consistent with continued caution around CRE credit quality.

Financial Conditions: The Cost of Credit Is Rising

The Chicago Fed National Financial Conditions Index (NFCI) measures stress across money markets, debt markets, equity markets, and the banking system. Negative = looser than average; zero = historical average; positive = tighter. As of March 20, 2026, the NFCI stood at -0.475: still loose, but the direction matters more than the level.

Over eight weeks (January 30 to March 20), the NFCI moved from -0.558 to -0.475, a shift of +0.083 toward tighter conditions. Every weekly reading came in less negative than the last. For borrowers, this translates into gradually wider spreads, stronger covenant requirements, and tighter debt-service coverage thresholds on commercial term loans and lines of credit, even before it shows up in outright approval or denial decisions. When the NFCI is deeply negative, lenders compete aggressively. As it moves toward zero, that competition eases and selectivity increases.

Credit Quality and the Two-Tier Market

Business loan delinquency at commercial banks rose to 1.34% in Q4 2025, the fifth quarter in the last six to register an increase. The trajectory has been gradual but persistent: from 1.18% in Q3 2024 to 1.27% in Q4 2024, then 1.29%, 1.28%, 1.33%, and 1.34% through 2025. Charge-offs, meanwhile, settled at 0.55% in Q4 2025, up from 0.51% a year earlier but essentially flat over the four quarters of 2025 (ranging from 0.55% to 0.58%).

The delinquency data is concerning not for its absolute level, which remains moderate, but for its direction. Rising delinquencies give bank risk committees a data point to justify tighter underwriting, and that tightening is showing up unevenly across firm size. The most recent SLOOS (covering Q4 2025 lending conditions) reveals a market that has split along a firm-size fault line. For large and mid-sized firms, net tightening on C&I lending standards dropped to 5.3%, down from 18.5% in Q1 2025, a clear easing trend. For small firms, net tightening increased to 8.9%, up from 8.3% in Q3 2025, moving in the opposite direction.

Loan demand compounds the divergence. Large and mid-sized firms reported net stronger demand of +16.1%, suggesting healthy firms are actively drawing on credit facilities. Small firms reported demand at 0.0%, a flat reading that could reflect either satisfaction with current capital levels or discouragement from applying. Given the tightening standards small firms face, the latter interpretation is more consistent with the data. When borrowers anticipate rejection, they stop applying, which suppresses measured demand and creates a self-reinforcing cycle. Firms that could benefit from a business line of credit may be forgoing the application entirely.

Cross-Theme Analysis: A Lending Window That Opens Selectively

Read together, the three data streams, supply, conditions, and quality, paint a picture of selective expansion. Credit supply is growing at its fastest pace in over a year, with business loans accelerating from a flat stretch into a $97.6B six-month surge. Financial conditions remain accommodative but are tightening at a measurable pace, meaning the cost of that credit is quietly rising. And the credit quality data, both the gradual delinquency increase and the SLOOS divergence, explains who gets to participate in the expansion and who does not.

The composite picture is not a closed lending window. It is a window that has opened wider for borrowers who bring strong financials, established banking relationships, and clean credit histories. For these firms, banks are competing for their business, demand is rising, and standards are easing. For borrowers with thinner profiles, limited operating history, or concentrated CRE exposure, the window is narrowing. Standards are tightening, demand is flat (possibly suppressed by discouragement), and rising delinquency rates give lenders a rational justification for continued selectivity.

This divergence has a compounding quality. Firms locked out of credit cannot invest in the growth that would improve their business credit profile. Meanwhile, firms with access to credit use it to build stronger balance sheets, widen the gap further. The two-tier market identified in the SLOOS is not a temporary condition; it is a structural feature of the current lending cycle that will persist until either rates fall enough to compress spreads or small-firm credit quality improves enough to shift risk appetite.

Borrower Implications

The credit availability picture creates distinct realities depending on a firm's position in the credit spectrum.

Firms with strong credit profiles, DSCR above 1.25, multiple banking relationships, and at least three years of operating history are operating in a favorable environment. Bank lending is expanding, standards for larger firms are easing, and competition among lenders means better pricing and terms. These firms should consider locking in favorable terms now, before the NFCI tightening trend translates into higher spreads. The current rate environment with Prime at 6.75% still represents value relative to the elevated cost structure of the past two years.

Firms with marginal credit profiles face a harder calculus. With small-firm tightening at 8.9% and flat demand, the practical experience is longer approval timelines, more documentation requests, and tighter debt-service coverage requirements. These borrowers should focus on strengthening their application before approaching lenders: clean financial statements, reduced existing leverage, and evidence of stable or growing revenue. Approaching the market unprepared in the current environment invites rejection, which compounds the credit profile problem.

CRE-dependent borrowers face specific headwinds. CRE lending growth at 1.6% lags business lending growth at 4.4% by a factor of nearly three, signaling that banks are rationing property-backed credit. Firms whose primary collateral is commercial real estate should expect more conservative loan-to-value ratios and may need to supplement with additional guarantees or cross-collateralization.

What to Watch

The next SLOOS release in late April will cover Q1 2026 lending conditions and reveal whether the two-tier divergence is widening, stabilizing, or beginning to converge. This is the single most important data point for the credit availability outlook. Watch the NFCI trajectory: if the index continues moving toward zero at the current pace, it will approach -0.35 by late May, a level that historically corresponds to noticeably tighter lending terms. Bank lending growth above 4% YoY through Q1 2026 would confirm that the supply expansion is durable rather than a seasonal artifact. If delinquency rises above 1.40% in Q1 2026, expect another round of standards tightening, particularly for small firms already on the wrong side of the two-tier divide.