Project-based capital is a short-term loan tied to one signed contract — it funds mobilization on a specific job and gets repaid as that job's pay apps come in. A line of credit is a revolving facility you draw from across your whole business — it covers overhead, surprises, and the gaps between jobs. They solve different parts of the cash-flow problem. Most healthy subs eventually need both. The decision isn't which is "better." It's which one fits the timing mismatch in front of you right now.

Why this question matters more than it used to

You already know the math. Construction pays slowly. The Construction Financial Management Association puts the industry's average days sales outstanding at 83 days. Other research clocks the average sub at around 51 days from work performed to cash in the door, and only 5% of subcontractors get paid on time. (Siteline, 2025; Construction Executive citing Rabbet, 2020)

Meanwhile your payroll runs weekly. Material invoices land on net-30. Your bond premium is due before mobilization. The mismatch is structural — and it's the reason only 39% of subs report they can cover those costs from working capital alone. The rest float it with credit cards, lines of credit, owner savings, or whatever's nearest. (Construction Executive, citing Rabbet, 2020)

The question isn't whether you'll borrow against the gap. It's how — and whether the tool you reach for actually fits the problem in front of you.

This post compares the two tools every SMB sub eventually weighs: project-based capital (also called mobilization financing, contract financing, or project-specific funding) and a line of credit (bank LOC, SBA-backed LOC, or non-bank revolver). Both are legitimate. Both can be misused.

This is not financial or legal advice. Specific terms, rates, and eligibility vary by lender and borrower. Talk to your CPA and surety before signing.

How does project-based capital actually work?

Project-based capital is short-term financing underwritten against a single signed contract. The lender looks at the project — scope, GC creditworthiness, pay-app schedule, your historical performance — not just your business financials.

The mechanics:

• You sign a contract. The contract is the underwriting collateral.
• The lender funds your mobilization. Labor, payroll, materials, bond premium, equipment transport, insurance, the first weeks of work — everything that has to be paid before your first pay app clears. Mobilization capital is built to bridge what specialty lenders describe as a 60-day liquidity gap. (Mobilization Funding)
• Repayment is tied to pay apps. As the GC pays you, the loan unwinds. Repayment schedules mirror the project, not a generic monthly amortization.
• It's a closed loop. When the job ends and the loan is repaid, the facility closes. To fund the next project, you apply again.

A real example of the structure: a sub wins a $400K commercial job with a 30% mobilization deposit and 70% paid out on draws. Even with the deposit, the sub needs cash to buy materials, mobilize crews, and pay subs of their own before the first draw clears. That's the exact gap project-based capital is built for. (Bay Street Lending, 2026)

There's also a federal version worth knowing. The SBA 7(a) Working Capital Pilot (WCP) Program offers project-based lines of credit up to $5 million for contractors, with up to 100% financing of direct project costs including labor, materials, and subcontractors. (U.S. Small Business Administration, March 2026)

What project-based capital is good at

• Funding a specific job's mobilization without draining your operating account
• Keeping your "organizational capital" — the cash you use to run the business — free for the next opportunity
• Letting you accept jobs that are bigger than your normal cash cushion would allow
• Aligning repayment to revenue: you pay it back as you get paid

Where it breaks

• It's job-specific. You can't use the leftover capacity on something else.
• It costs more than a bank line. Specialty contract financing is priced higher than an SBA-backed LOC because the underwriting is project-by-project and the speed expectation is higher.
• It can affect bonding. Short-term project debt shows on the balance sheet and changes your working-capital ratio — the metric sureties use to set bonding limits. Talk to your surety agent before closing. (Sovyrn Advisory, 2026)

How does a line of credit work?

A line of credit is a revolving facility underwritten on your business — financials, time in business, owner credit, collateral. Once it's approved, you can draw from it, pay it back, and draw again, up to the credit limit.

The mechanics:

• You qualify the company, not a project. The bank looks at multi-year financials, your DSO trend, your debt service coverage ratio, and your personal credit.
• You only pay interest on what you draw. An unused balance generally costs little or nothing beyond an annual fee.
• It's flexible. Payroll one month, a material deposit the next, a slow February — you choose.
• It stays open. A LOC is meant to be a permanent facility you carry, draw, repay, and re-draw.

SBA-backed LOCs are worth knowing. The SBA 7(a) Working Capital Pilot offers monitored lines of credit through the 7(a) program with an annual short-term guaranty fee — you pay proportionally for the time the line is in use, which the SBA describes as the most flexible and affordable way to manage working capital needs. (U.S. Small Business Administration, 2026)

Pricing varies by lender and borrower. As of mid-2026, the Wall Street Journal Prime Rate sits at 6.75%, and SBA 7(a) maximum rates run roughly 9–11.5% APR, with conventional bank LOCs for strong borrowers commonly priced lower. (Bay Street Lending, June 2026; Nav, 2026) Verify current rates with your lender before relying on these numbers — base rates can move.

What a line of credit is good at

• Covering overhead, payroll, and short-term gaps that don't tie cleanly to a single project
• Funding small material deposits and operational surprises
• Smoothing seasonal swings
• Lower stated rate than most project-based financing

Where it breaks

• It's underwritten on the business, not the project. A sub winning a job three times their normal size may find their LOC too small to mobilize it.
• It can lull you into using it wrong. Subs routinely use an LOC to fund a single oversized job's mobilization, then can't draw on it for anything else for months. The "cheap" capital becomes expensive when it's stuck.
• Closing takes longer than project capital. Conventional working-capital loans typically close in 30–45 days; SBA 7(a) in 45–75 days. (Bay Street Lending, 2026) When you've got a contract starting in three weeks, that's a hard timeline.
• Personal guarantees and collateral. Almost always required.

Project-based capital vs. line of credit: side-by-side

AttributeProject-Based CapitalLine of CreditWhat's underwrittenA specific signed contractYour whole businessBest forMobilization on a defined jobOverhead, surprises, between-job gapsTied to a single project?YesNoRepaymentMirrors pay-app scheduleRevolving — pay down, redrawSpeed to fundDays, sometimes faster30–75 days typicallyStated costHigher than bank LOCGenerally lower; SBA 7(a) capped by formulaEffect on bondingCan affect working-capital ratio; talk to suretyCan also affect — but used differentlyReusable across jobs?No — closes when the job closesYes — that's the pointBest handled bySpecialty construction lendersBanks, credit unions, SBA-backed LOCs

When should you use which?

A decision rule that has held up across the SMB subs I've worked with:

Use project-based capital when:

• You've won a job that's larger than your normal cash cushion can mobilize
• The job has front-loaded costs (materials, bond, payroll) before the first pay app
• You want to preserve your operating cash and your existing LOC for everything else
• You're growing into bigger contracts and don't want every new job to feel like a bet-the-company moment

Use a line of credit when:

• You need a permanent backstop for the everyday cash-flow swings of a portfolio of jobs
• You have overhead, slow seasons, or surprise costs that don't tie to a single project
• You qualify on financials and want the lowest-cost facility available
• You want optionality — capital you can deploy in any direction within hours

Use both when:

• You're past the survival phase and into the growth phase
• The LOC handles the business; project-based capital handles the contracts that are bigger than the business is built for

The mistake I see most: subs using a single LOC to mobilize jobs that are three or four times their normal size, then discovering they can't draw on the line for payroll, equipment failures, or the next opportunity for the next six months. The line wasn't built to carry a single project's full weight. That's what project-based capital is for.

What this looks like in practice

A bid-ready sub doesn't make the project-capital-vs-LOC decision in the moment. They make it in advance, based on the shape of the work they're trying to win.

1. Look at your job pipeline by size. Sort by contract value. Mark every job that's more than ~30% of your trailing 12-month revenue. Those are your "bigger than normal" jobs.
2. Estimate mobilization cost. Labor, materials, bond, equipment, insurance, the first weeks of payroll. As a rough planning number for commercial work, mobilization can land around 5–15% of total contract value depending on trade and pay-app cadence — confirm against your own historical projects.
3. Compare mobilization cost to available LOC headroom. If a single job's mobilization would consume more than half your LOC, that's a flag. The line wasn't designed to carry that.
4. Choose the tool that fits. Use the LOC for the small-to-medium jobs that fit your normal pattern. Use project-based capital — through a specialty construction lender or the SBA 7(a) WCP — for the jobs that are bigger than your business is built to mobilize.
5. Talk to your surety. Any new facility affects your balance sheet and your bonding capacity. Don't surprise them.
6. Talk to your CPA. The structure of the facility — short-term vs revolving, secured vs unsecured, personal guarantee scope — has real tax and reporting consequences.

Where Breva fits

Breva® is a financial operations platform built for SMB construction subs. We don't lend money. What we do is help you arrive at the lender — bank, SBA, CDFI, specialty construction lender — with your financial story already in order.

• The Breva Score (a 300–850 financial-health score for contractors) tells you and a partner lender where you stand before you apply.
• The Funding Tab routes you to embedded lending partners with your data prefilled, instead of starting over from scratch on every application.
• The Pay-App Benchmark at benchmark.breva.ai shows you how your pay-app cycle compares to peers in your trade and region — useful context before you decide what kind of capital you actually need.
• Ask Bre™, our AI financial coach, walks you through the readiness picture and what improving it would unlock. (Ask Bre™ is a coach, not a lender, and does not provide legal or tax advice.)
• BuildForward™, our 10-week financial-operations accelerator for subcontractors, takes the same readiness work and turns it into a cohort.

If you're trying to figure out which capital tool you actually need — and whether you're ready for the one you want — start with the Pay-App Benchmark. It's free. It takes about ten minutes. And it'll tell you where the cash-flow drag really is in your business.

Start your free Pay-App Benchmark →

FAQ

What is project-based capital in construction?

Project-based capital is short-term financing tied to a single signed contract. The lender underwrites the project — not just the borrower — and repayment is scheduled against your pay-app draws. It funds mobilization costs (labor, materials, bond premiums, equipment) before your first pay app clears.

How is a line of credit different from project-based capital?

A line of credit is a revolving facility you draw from across multiple projects and expenses. It's underwritten on your business as a whole — financials, credit, time in business — not on a specific contract. You only pay interest on what you draw, but the line stays open between projects.

Which is cheaper — project-based capital or a line of credit?

A bank or SBA-backed line of credit typically carries a lower stated rate than project-based capital. But effective cost depends on how the money is used. Project-based capital is sized to a specific job and repaid quickly from that job's revenue; a line carried unused or rolled over month to month can become more expensive in practice.

Can a subcontractor use both?

Yes — and many established subs do. Project-based capital handles the front-loaded cost of specific jobs; the line of credit covers overhead, slow seasons, and surprise costs that don't tie to a single contract. The two tools serve different parts of the cash-flow problem.

Will project-based capital affect my bonding capacity?

It can. Short-term project debt shows on the balance sheet and affects working-capital ratios that sureties use to set bonding limits. Discuss any new financing with your surety agent before closing, especially if you rely on bonding for public work.

Is the SBA 7(a) Working Capital Pilot a line of credit or project-based capital?

Both, in a way. It's structured as a monitored line of credit, but it can be used to finance specific projects up to $5 million with up to 100% financing of direct project costs. It's worth asking SBA lenders about if you're choosing between traditional bank capital and a specialty construction lender. (SBA, 2026)

Sources

• U.S. Small Business Administration, 7(a) Working Capital Pilot Program, accessed June 2026
• U.S. Small Business Administration, "SBA Highlights Working Capital Loans for U.S. Homebuilders," March 2026
• Siteline, "9 Reasons for Construction Payment Delays," updated 2025 — citing PwC on 90-day average DSO
• Construction Executive (citing Rabbet's annual Construction Payments Report), "Deconstructing Slow Payments in Construction," on 51-day DSO, 39% working-capital coverage rate, and $64B industry-wide cost
• Mobilization Funding, "What is Construction Financing?" and "How Contract-Based Financing Helps Construction Contractors Grow"
• Sovyrn Advisory, "What Is Mobilization Financing? A Contractor's Guide," April 2026
• Bay Street Lending, "Current SBA 7(a) Loan Rates June 2026" and "Best Working Capital for Construction Contractors," 2026
• Nav, "Current SBA Loan Rates in 2026," April 2026
• Billd, "KPIs that Construction Subcontractors Need to Look at in 2026," January 2026

Breva® is a financial operations platform serving SMB construction contractors. Breva is operated by Cadence Financial Group, Inc. and is not a lender or chartered financial institution. Information in this post is for educational purposes and is not financial, tax, or legal advice. Rates, terms, and program features change — verify with your lender, CPA, and surety before making capital decisions.