What to Do When a Traditional Line of Credit Runs Short: How Subcontractors Fill the Gap

Traditional lines of credit are one of the most commonly used sources of working capital, which is why 67% of subcontractors use them according to the 2026 National Subcontractor Market Report. They're flexible, revolving, and come from a banking relationship you've already built.

The problem is they rarely stretch far enough. More than half of subcontractors who rely on traditional lines of credit report their credit capacity represents less than 10% of annual revenue. For a $10 million subcontracting business, that's roughly $600,000 to $1M in available credit. That might be enough for a normal month, but it's not enough for a project that is just starting or a stretch of back-to-back projects with overlapping cash needs.

The solution isn't to walk away from your traditional line of credit. It's to understand what a traditional line is built for and fill the rest of the gap with the right tool.

Traditional Lines Are Designed for Stability, but Construction Isn't Stable

Bank underwriting is built around predictability. Lenders evaluate your historical financials, annual revenue, and demonstrated repayment history. When you meet their criteria, banks will offer a credit line.

The challenge for subcontractors is that cash flow is structurally unpredictable. You're purchasing materials and paying labor typically 75 to 90 days before receiving payment from your GC. On any active project, you're carrying the full cost of work in progress on your balance sheet while waiting for a pay app to get approved, processed, and paid.

When project volume increases (multiple projects running at once, a larger scope than usual, or a fast-start requiring immediate material orders) the demand on your traditional line can spike past its capacity quickly. And because credit limits are set based on past performance, banks are not able to provide adequate capacity for subcontractors looking to grow their businesses. Your current revenue has already outpaced the credit capacity they approved two years ago.

What Happens When the Line Runs Out

When a traditional line hits its limit, a subcontractor's options get limited quickly. According to Billd's 2026 National Subcontractor Market Report, 30% of subcontractors tap personal savings when facing a cash deficit. Others slow supplier payments, delay hiring, or turn down work they're fully capable of executing.

There's also a less obvious cost: every dollar drawn from your traditional line for payroll or overhead is a dollar unavailable when a larger strategic opportunity comes up. Equipment purchases, entering a new market, a project that requires bonding capacity. These are all scenarios where an established banking relationship and lower cost of capital matter most. Drawing your traditional line of credit down for day-to-day operational needs means it may not be there when you actually need it.

Creating a Better Strategy: Using Traditional Lines and Construction Lines of Credit

Subcontractors who manage cash flow most effectively don't rely on a single capital source. They build a capital stack that contains multiple forms of working capital where each option has a defined role.

Traditional lines of credit are well-suited for strategic and longer-term uses: equipment purchases, expanding into new markets, situations where the full weight of your banking relationship is an asset.

A construction-specific line of credit fills the operational layer: labor costs between billing cycles, overhead during a project ramp-up, vendor payments that fall outside a project's financing window, and the occasional gap between when one project closes out and you receive payment from the next one.

These two tools aren't competing for the same job; they cover different parts of the same business. When each line of credit is used for what it's built for, neither gets strained past its limit.

Where Flex Line Fits In

Billd's Flex Line is a revolving line of credit built specifically for commercial subcontractors. It's not tied to a single project, so it works across your whole business. Repay what you draw and your available credit replenishes.

There are no fees on unused funds and no prepayment penalty.

Flex Line sits alongside your traditional line, not in place of it. It's designed to cover the operational layer your traditional line isn't built for, so your bank facility stays available for the decisions that actually need it.

The Bottom Line

Your traditional line of credit is an important part of your capital stack. It's just not designed to do everything. Subcontractors who build a capital stack with the right options for the right purpose spend less time worrying about their cash flow and more time focusing on delivering excellent work.

Learn more about Flex Line at billd.com/flex-line/.

Flex Line eligibility is subject to application, credit review, and approval. Terms, conditions, and restrictions apply. This content is not intended as legal or financial advice. Please review all line of credit agreements and consult an attorney to determine if Flex Line is right for your business. Lines of credit made by Cross River Bank, Member FDIC. This is not a deposit product.