Invoice Factoring for Construction Companies — 2026 Guide
Last reviewed: May 2026 — Advance rates and terms verified via Riviera Finance, Paragon Financial Group, and InterNex Capital published schedules.
- Construction factoring advances 70–85% of approved progress billings at fees of 2–5% per 30-day period — among the highest fees across all industries
- Approval is based on GC or municipal owner creditworthiness — subcontractors with creditworthy GC clients can qualify even with limited financial history
- The main advantage is converting approved progress billings to cash in 2–5 days, eliminating the 30–60 day wait that strains payroll and supplier obligations
- Retainage (5–10% withheld until project completion) is excluded from advances — plan cash flow to cover this gap until project closeout
Why Construction Factoring Is More Complex
Construction factoring advances 70–85% of approved progress billings — retainage of 5–10% is excluded and cannot be advanced until project completion.
FundingCompass research, May 2026
Construction accounts receivable factoring carries unique complications not present in other industries — retainage, lien waivers, and the multi-party payment chain (owner → GC → subcontractor → supplier) create risks that lead most general factors to decline construction invoices. Specialist construction factors advance 70–85% of approved progress billings — lower than the 90–97% typical in trucking or staffing — and the educational value here is high: understanding retainage and lien exposure before approaching a factor is essential.
Progress billings submitted via AIA (American Institute of Architects billing format) G702/G703 forms are the accepted standard — factors familiar with construction expect this format.
Pros for Construction Subcontractors
- Converts approved progress billings to cash in 2–5 days — eliminating the 30–60 day wait for GC payment that strains payroll and supplier obligations
- Approval based on GC or municipal owner creditworthiness — subcontractors with creditworthy GC clients can qualify even with limited financial history
- Specialist factors assist with lien waiver documentation, reducing administrative burden on subcontractor office staff
- Works across trades — electrical, plumbing, HVAC, concrete, and specialty contractors all commonly use construction factoring
Cons and Watch-outs
- Retainage invoices (the 5–10% withheld until project completion) are typically excluded — factors do not advance on withheld amounts, leaving a significant portion of your contract value inaccessible until project closeout
- GC notification via Notice of Assignment (a letter directing your customer to pay the factor instead of you) is required and some GCs have policies that complicate or delay factoring arrangements — discuss with your GC before applying
- Construction factoring fees (2–5% per 30 days) are among the highest of any industry, reflecting contract completion risk and invoice dispute frequency
- Joint check agreements and payment bond requirements can make some invoices unfactorable — disclose these upfront
Construction Factoring Challenges — What Factors Are Managing
Retainage. General contractors and project owners routinely withhold 5–10% of each progress payment until project completion — often 6–18 months after the subcontractor’s work is finished. Most factors will not advance on retainage because it is not due until project completion, which may be far in the future. Your effective advance on a construction invoice is against the 90–95% of the invoice that is not retainage.
Lien rights and the payment chain. In construction, unpaid subcontractors and suppliers have the right to file a mechanic’s lien against the property. This lien right creates a competing claim against the receivable — a factor advancing on an invoice where lien rights are unresolved faces the risk that the GC withholds payment to resolve a lien dispute. Most construction factors require a lien waiver before advancing.
Contract completion risk. A construction invoice may be disputed if the work it covers is deemed incomplete or defective. Unlike a delivered freight load or placed temporary worker, construction completion is subject to inspection and interpretation.
Joint checks. On some construction projects, the owner or GC issues a joint check payable to both the subcontractor and their supplier — to ensure suppliers are paid and lien rights are cleared. Joint checks complicate factor collections because multiple parties must endorse them.
How Construction Factoring Works
Step 1 — Submit and Get Approval
You complete a portion of work and submit a progress billing using AIA (American Institute of Architects billing format) G702/G703 or an equivalent form to the GC or owner. GC or owner approval is the critical step — factors will not advance on unapproved billings. Approval transforms a progress billing into a confirmed receivable.
Step 2 — Submit to Factor With Lien Waiver
You submit the approved billing to the factor with a conditional lien waiver. Most factors require a lien waiver be provided to the GC simultaneously with the advance — exchanging your lien rights for payment. The factor advances 70–85% of the approved billing (excluding retainage). Note: if your invoice includes 10% retainage holdback, your net advance is 70–85% of the remaining 90%.
Step 3 — GC Payment and Reserve Release
The GC pays the factor on their normal schedule. Construction payment terms are typically net-30 to net-60 from invoice approval. Reserve is released minus the factoring fee when GC pays.
Current Construction Factoring Rates — 2026
| Factor | Advance Rate | Fee Per 30 Days | Lien Waiver Support | Min. Monthly Volume |
|---|---|---|---|---|
| Riviera Finance | 70–85% | 2–5% | Yes | $25,000 |
| Paragon Financial Group | 75–85% | 2–4.5% | Yes | $25,000 |
| InterNex Capital | 70–80% | 2.5–5% | Yes | $50,000 |
| Crestmark | 75–85% | 2–4.5% | Limited | $50,000 |
| Triumph Business Capital | 75–85% | 2–4% | Limited | $25,000 |
Rates verified May 2026. Actual fees depend on GC creditworthiness, project type, dispute history, and monthly billing volume.
- Retainage
- The 5–10% of each progress payment that the owner or GC withholds until the project is substantially complete — and sometimes through a defect liability period afterward. Most factors will not advance on retainage because it is contingent on project completion, which may be months away.
- Lien waiver
- A document that releases your right to file a mechanic's lien against the property in exchange for payment. Construction factors typically require a conditional lien waiver (which only releases rights upon actual receipt of payment) before advancing. Never sign an unconditional lien waiver before funds are confirmed in your account.
- Progress billing (AIA G702/G703)
- The standard construction billing format issued by the American Institute of Architects. Factors familiar with construction expect billings in this format — it details work completed to date, the retainage held, and the net amount due this period.
- Notice of Completion
- A legal document filed when a project is substantially complete, triggering the clock on lien filing deadlines and retainage release schedules. Factoring relationships on a project typically close out when the Notice of Completion is filed and final payment (including retainage) is made.
- Joint check agreement
- A GC-imposed arrangement requiring checks to be made payable jointly to the subcontractor and their material supplier, ensuring the supplier is paid before lien rights are cleared. Joint checks complicate factoring because the factor cannot deposit them alone — both parties must endorse them.
| Approved progress billing | $80,000 |
| Less 10% retainage (GC) | -$8,000 |
| Factorable amount | $72,000 |
| Advance rate (80%) | $57,600 upfront within 2–5 days |
| Factoring fee (3%) | -$2,160 per 30-day period |
| Reserve release (at GC pay) | $72,000 − $57,600 − $2,160 = $12,240 |
Lien Waivers — What You Need to Know Before Factoring
Executing a lien waiver waives your right to file a mechanic’s lien against the property — exchanging your security interest for the promise of payment. Most construction factors require a lien waiver as a condition of advancing on an invoice.
Conditional vs. unconditional waivers:
- A conditional lien waiver releases your lien rights only upon actual receipt of payment. This protects you if the factor doesn’t remit funds. Most factors and GCs accept conditional waivers.
- An unconditional lien waiver releases your lien rights immediately upon signing, regardless of whether payment is received.
An unconditional lien waiver releases your lien rights immediately upon signing, regardless of whether payment is received. Always use a conditional lien waiver — which releases your rights only upon actual receipt of payment — to protect yourself in the event of a funding failure.
Partial vs. final waivers:
- A partial (progress) waiver covers a specific billing period — you retain lien rights for unpaid work in other periods.
- A final waiver releases all lien rights for the entire project. Sign this only when all amounts — including retainage — have been received.
Who Qualifies for Construction Factoring?
Well-positioned for approval:
- Subcontractors with creditworthy GC or municipal clients
- Trades with clean billing histories and low dispute rates (electrical, plumbing, HVAC, concrete)
- Projects with a GC-approved payment schedule in place
- Businesses with $25,000+ in monthly approved billings
Difficult to place:
- General contractors (factors prefer the subcontractor level — GC payment chains are too complex)
- Projects with multiple lien disputes outstanding
- Businesses billing residential homeowners (consumer credit risk, complex lien laws by state)
- Businesses with active mechanic’s liens filed against them
Construction Factoring vs. Construction Line of Credit
| Construction Factoring | Construction Line of Credit (LOC) | |
|---|---|---|
| Approval based on | GC/owner creditworthiness | Your credit + bonding capacity |
| Speed to funding | 2–5 days post-approval | Days to weeks |
| Retainage funded? | No | Sometimes |
| Cost | 24–60% effective APR (the annualized cost of the financing, accounting for all fees and repayment speed) | 8–20% APR |
| Min. time in business | 12+ months typically | 24+ months typically |
| Best for | Subcontractors with slow-paying GCs | Established contractors with bank relationships |
Who this works for: Subcontractors in established trades (electrical, plumbing, HVAC, concrete) billing $25,000+/month in approved progress billings to creditworthy general contractors or municipal owners, with a low history of billing disputes.
Who should look elsewhere: General contractors face approval difficulty due to the complexity of the owner payment chain. Residential contractors billing homeowners encounter consumer credit risk and complex state lien laws that most construction factors avoid. Businesses with active mechanic’s liens filed against them are typically ineligible until liens are resolved.
Frequently Asked Questions
Can a general contractor (GC) factor invoices?
It is rare. Most construction factors focus on subcontractors because the payment chain is more direct — subcontractor invoices the GC, factor collects from GC. GC invoices go to project owners, who may issue joint checks, have retention disputes, or require architect certification — adding complexity that most factors decline. Some specialty factors work with GCs on smaller residential or commercial projects.
What is retainage and can it be factored?
Retainage is the 5–10% of each progress payment that the owner or GC withholds until the project is substantially complete (and sometimes for a further defect liability period). Most factors will not advance on retainage because it is contingent on project completion — potentially months away. Some specialised lenders offer retainage financing separately, at higher rates (often 15–30% APR), given the uncertainty of timing.
Do I need to notify my GC that I'm factoring my invoices?
Yes. The factor issues a Notice of Assignment to your GC, directing payment to the factor rather than to you. In construction, this is less universally accepted than in freight or staffing — some GCs have payment policies that complicate factoring. Discuss the Notice of Assignment with your GC before submitting your first invoice to a factor.
How does construction factoring interact with payment bonds?
If a project has a payment bond (common on public works), unpaid subcontractors have bond claims in addition to (or instead of) lien rights. Factoring does not directly affect your bond claim rights, but assigning your receivables to a factor may complicate bond claim procedures. Consult a construction attorney familiar with your state's bond claim rules before factoring on bonded projects.
What is a joint check agreement and how does it affect factoring?
A joint check agreement requires the GC to issue checks payable jointly to you and your material supplier — ensuring the supplier is paid and preventing supplier liens. Joint checks complicate factoring because the check cannot be deposited by the factor alone — both parties must endorse it. Some construction factors will work around joint check arrangements; others will decline the invoice. Disclose any joint check agreements upfront.
Can construction companies with tax liens get factoring?
IRS tax liens create a priority claim on your receivables that generally blocks factoring — the IRS must be paid before the factor can collect. Some construction factors work with businesses on IRS payment plans, but the factor will require written confirmation from the IRS that the payment plan is in good standing and that the IRS will subordinate its lien to the factor's security interest. This is possible but requires additional steps and may take 2–4 weeks to arrange.