Construction Line of Credit Management: The Working Capital Facility Most Contractors Need and Some Mismanage
Most construction companies need a line of credit. Construction's cash flow gap between paying costs immediately and collecting revenue on delayed terms creates a working capital requirement. Operating cash plus retained earnings often doesn't cover peak needs. A line of credit bridges the gap, letting contractors fund projects through the timing mismatch and repay when revenue arrives.
How the line of credit is sized, managed, and used substantially affects the contractor's financial operations. Good LOC management supports operations smoothly; poor management creates compliance problems and banker concerns. This post covers LOC essentials for construction contractors.
LOC serves specific financial purposes:
LOC uses in construction
- Working capital for project execution
- Labor and materials funding ahead of billings
- Equipment purchases (short-term, before term loan)
- Bridge financing between project phases
- Seasonal cash flow smoothing
- Emergency reserves for unexpected needs
LOC is for short-term working capital, not permanent financing or long-term assets. Using LOC for purposes beyond working capital can create compliance issues and inefficient capital structure.
Size reflects peak working capital need:
LOC sizing factors
- Peak borrowing requirement from cash flow forecast
- Buffer above peak for unexpected needs
- Growth projections
- Project mix and size
- Payment timing from typical clients
- Retainage patterns
- Bonding requirements (bonds may restrict other borrowing)
Undersizing creates tight cash moments; oversizing means paying for unused facility (commitment fees on unused portion). Sizing to typical peak plus reasonable buffer balances these concerns.
Borrowing base limits actual borrowing:
Borrowing base elements
- Eligible accounts receivable (typically AR under 90 days)
- Percentage advance rate (typically 75-85% of eligible AR)
- Sometimes eligible inventory at lower advance rate
- Aged AR often excluded or discounted
- Concentration limits on single customers
- Government receivables sometimes treated differently
- Calculated monthly or more frequently
Borrowing base may limit borrowing below facility maximum. A $5M line might have $3M borrowing base if AR eligible is $4M at 75%. Monitoring borrowing base prevents over-borrowing against collateral.
Covenants are operating restrictions:
Common LOC covenants
- Minimum working capital ratio
- Maximum debt-to-equity ratio
- Minimum tangible net worth
- Debt service coverage ratio
- Distribution restrictions
- Additional debt restrictions
- Reporting requirements (monthly, quarterly, annual)
- Financial statement audit or review requirements
Covenants aren't just contractual restrictions — they're signals to bank. Tight covenants mean less operational flexibility; loose covenants require stronger relationship or risk profile. Negotiating reasonable covenants at facility establishment matters.
LOC rates typically float:
LOC rate structures
- Prime rate plus spread (e.g., prime + 0.5%)
- SOFR plus spread
- Rate tied to financial metrics (performance pricing)
- Commitment fees on unused portion
- Letter of credit fees (if LOC supports LCs)
- Annual renewal fees
Rate structure affects borrowing cost. Performance pricing rewards better financial performance. Commitment fees on unused portion provide bank return on uncommitted capital.
A line of credit that's always fully drawn isn't really a line of credit — it's effectively term debt. Bankers prefer to see LOC balance fluctuating with project cycle, with occasional full paydown periods demonstrating cash flow strength. Always-maxed LOCs signal financial strain.
Reporting demonstrates compliance:
Typical reporting
- Monthly borrowing base certificate
- Monthly AR aging
- Monthly financial statements
- Quarterly compliance certificates
- Annual audited or reviewed financials
- Work in progress schedules (for construction)
- Backlog reports
- Project profitability details (sometimes)
Construction-specific reporting like WIP schedules matters for bankers' understanding. Clear, timely reporting builds confidence. Late or unclear reporting raises concerns.
Get AP insights in your inbox
A short monthly roundup of construction AP + accounting posts. No spam, ever.
No spam. Unsubscribe anytime.
Paydown and Usage Pattern
Usage pattern matters:
LOC usage pattern expectations
- Draws fund project needs
- Paydowns as AR collections arrive
- Balance fluctuates with project cycle
- Full paydown at some point demonstrates revolver character
- Continuous maximum draw looks like term debt
- Bank covenants may require annual cleanup period
Good LOC use is revolving — up when needed, down when not. Some banks require annual cleanup (complete paydown for defined period) to prove revolving use. Continuous maxed-out LOC prompts bank conversations about whether term debt is more appropriate.
LOC is part of broader relationship:
Bank relationship
- Regular communication about business trends
- Advance notice of expected changes (large projects, losses)
- Proactive discussion of concerns
- Coordinated communication during difficulties
- Multiple bank products (depository, merchant, treasury)
- Long-term relationship value
Banks prefer to lend to customers they know and trust. A LOC is easier to maintain, renew, and expand with strong relationship. Bankers surprised by problems respond more negatively than bankers who saw problems coming.
LOCs require renewal:
LOC renewal and changes
- Annual renewal typical
- Facility size review based on business growth
- Covenant review based on financial performance
- Rate adjustments based on market
- Potential for expansion as business grows
- Alternative bank options if terms deteriorate
Renewal is opportunity to reset terms. Growing businesses often renegotiate facility size and terms at renewal. Businesses with deteriorating performance face harder renewals.
LOC management warning signs:
Warning signs
- Consistently at or near maximum
- Covenant violations or tight margins
- Slow borrowing base reporting
- Growing aged AR reducing borrowing base
- Late financial reporting
- Bank concerns expressed in calls
- Rate increases or term tightening
Warning signs indicate need for action. Addressing concerns proactively — reducing AR, improving reporting, discussing with bank — prevents facility problems.
Construction lines of credit bridge working capital gaps between costs and revenue. Sizing should match peak need plus reasonable buffer. Borrowing base limits actual borrowing against eligible collateral. Covenants create operating restrictions — negotiate reasonable terms. Rate structures typically float. Reporting demonstrates compliance and builds bank confidence. Usage pattern should reflect revolving character. Bank relationship affects facility terms and renewal. Warning signs require action. Contractors with well-managed LOCs have smoother operations and better banking relationships; contractors with poorly-managed LOCs face compliance issues and facility problems. Working capital management is foundational financial discipline for construction companies.
Written by
Sarah Blake
Head of Product
Former AP Manager at a $200M construction firm, now leads product at Covinly. Writes about what AP teams actually need from automation — beyond the marketing promises.
View all posts