Construction Business Lines of Credit: How to Cover Payroll Between Jobs

The pattern is familiar to almost every contractor who's been in business for more than a few years: a big job wraps up, the final draw is submitted, and now you're waiting 30–45 days for payment while payroll is due Friday. Materials for the next job need to be ordered. The crew needs to be kept. And the bank account looks thin.

A business line of credit is the tool designed specifically for this situation. Used correctly, it's the most valuable financial product a contractor business can have. Obtained wrong — too late, from the wrong lender, under pressure — it either doesn't work or creates new problems.

Here's how to do it right.

How a Business Line of Credit Works for Contractors

A business line of credit is a revolving credit facility: you have a maximum limit, you draw what you need, you repay when funds arrive, and the capacity is restored for the next draw.

Unlike a term loan (which gives you all the money at once and starts a fixed repayment schedule), a line of credit matches the way contractor cash flow actually works — irregular draws, variable project timing, and the constant cycle of fronting costs before getting paid.

Mechanics:

• You draw from the line when cash is needed (mobilization, payroll, materials)
• Interest accrues only on the outstanding balance — not on the full credit limit
• As draws from owners arrive, you repay the line
• The credit limit is available again for the next project cycle

Example:
You have a $200,000 line. In March, you mobilize on a new project and draw $75,000 for materials and payroll. In April, you receive a $110,000 draw from the owner and repay $75,000. Your line is back to $200,000 available, with $35,000 left from the draw for operations. In May, you draw $60,000 for the next phase. And so on.

This cycle — draw, deploy, repay, repeat — is exactly what a line of credit is built for.

What a Construction Line of Credit Is and Isn't

Understanding the boundaries of a line of credit prevents the most common misuse.

A line of credit IS:

• A tool for managing timing gaps between costs incurred and revenue received
• A bridge for front-loaded project costs that will be covered by incoming draws
• An emergency buffer for unexpected equipment repair or subcontractor shortfall
• A way to maintain crew continuity between projects without cutting staff

A line of credit IS NOT:

• A substitute for adequate project pricing — if jobs aren't profitable, the line just delays the problem
• Long-term working capital — lines not repaid within a reasonable cycle signal that revenue isn't arriving as expected
• Equipment financing — equipment should be financed with term loans matched to useful life, not drawn from a revolving line
• A replacement for retained earnings — a healthy contractor business has both a line and cash reserves

Lenders monitor how lines are used. A line that stays fully drawn for months without repayment raises concerns at renewal time.

What Lenders Look for in Contractor Credit Lines

Construction lines of credit are evaluated differently from simple business lines at some lenders because they understand the lumpy, project-based revenue pattern. Here's what they examine:

Time in business: Most bank lenders want 2+ years. Alternative lenders may go to 1 year. Fewer than 12 months of history makes line approval very difficult except with very strong credit and collateral.

Annual revenue: Minimum thresholds vary by lender and line size. For a $100,000 line, $300,000–$500,000 in annual revenue is a reasonable expectation. For $250,000+, $750,000–$1M+ typically.

Personal credit score: 680+ for bank lines; 620–650+ for some alternative lenders.

Bank statement quality:

• Average daily balance relative to line size — lenders want to see that you actually have cash, not that you need the line to function at all
• Deposit consistency — regular deposits signal real project revenue
• NSF incidents — even one or two NSFs in a 6-month period raise flags
• Existing ACH debits — lenders can see MCA payments, existing loan payments, and other obligations directly in bank statements

Backlog and contracts: Some construction-focused lenders ask for active contract backlog. A contractor with $800,000 in signed work in progress is a better credit risk than one with $800,000 in trailing 12-month revenue but no current contracts.

DSCR: The line payment (typically interest-only on average balance) needs to fit within your overall debt service. If you already have heavy equipment loans and other obligations, this may limit the available line size.

Secured vs. Unsecured Lines: What's the Difference?

Unsecured lines are approved based on creditworthiness alone — no specific collateral pledged. These are harder to obtain for contractor businesses because of the project-based, lumpy revenue profile. When available, they typically have lower limits and higher rates than secured lines.

Secured lines are backed by collateral — a blanket lien on business assets (equipment, receivables, inventory), or in some cases a specific asset. Most bank construction lines are secured, either by a blanket lien or by accounts receivable.

Accounts receivable (AR) lines: Some construction lenders offer lines specifically collateralized by outstanding receivables. You can borrow a percentage (typically 70–85%) of eligible outstanding invoices. As you collect the receivables, the line is repaid. This structure closely mirrors the actual cash flow timing of contractor businesses and is worth knowing about if your receivable balances are large and consistent.

Line Size: How Much Should You Request?

The right line size for a contractor business depends on your project volume and billing cycle, but a reasonable rule of thumb: your line should be large enough to cover peak working capital needs on your two or three largest simultaneous projects.

A simple framework:

1. Identify your largest typical project by contract value
2. Estimate peak front-loaded costs (materials, mobilization, first month payroll) before the first draw: typically 15–25% of contract value
3. Multiply by the number of simultaneous projects you typically run
4. Add a buffer of 20–30% for timing uncertainty

Example: Contractor typically runs 2 simultaneous projects at $400,000 each. Peak front-loaded costs = $80,000 per project. Two projects = $160,000. Buffer = $48,000. Target line size: $200,000–$250,000.

It's better to request slightly more than you think you need — lenders rarely give you more than you ask for, but they often give you less.

When to Apply: Timing Matters More Than Most Contractors Realize

The most important rule in contractor credit lines: apply when you don't need it.

Lenders approve lines to businesses that demonstrate they don't desperately need the money. A contractor with strong bank balances, recent project completions, and a solid backlog is an easy approval. A contractor whose bank statements show a declining balance, recent NSFs, and no clear backlog is a difficult or impossible approval — regardless of credit score.

Best time to apply:

• During or just after a strong project completion, when deposits are high
• When your 6-month bank statements show consistent, growing deposits
• When you have signed contracts in hand that you can show a lender
• At least 3–6 months before you expect to actually need the line

Maintaining and Renewing Your Line

Most business lines of credit have 12-month terms with annual renewal. Renewal is not automatic — the lender reviews your current financials before deciding whether to renew, reduce, or close the line.

Best practices for maintaining good line health:

• Draw and repay regularly — lenders want to see the line being used for its intended purpose, not sitting idle or permanently maxed out
• Keep your bank statements clean — NSFs and overdrafts hurt renewal prospects
• Communicate proactively if you're having a difficult quarter — lenders respond better to transparency than surprises
• Pay down the line before renewal review — showing the line at zero or near-zero at renewal signals healthy cash flow management

💡 BestLoanUSA works with lenders offering construction business lines of credit across all major markets. Pre-screen your options with no credit impact — before you need the line.