Free Subcontractor Invoice Generator with Retainage
Create professional construction trade invoices in 60 seconds. Built-in 5%-10% retainage holdbacks, job site addresses, signed change orders, and statutory conditional lien waivers. 100% free, no login required.
⚡ Quick Trade Presets (30+ Specialty Contractors)
Click any trade below to instantly load industry-standard work items, hourly labor rates, material markups, and typical scope breakdowns.
1. Your Trade Business (Subcontractor)
2. General Contractor & Job Site Location
3. Billing MethodChoose calculation format
4. Itemized Work, Labor & Materials
5. Retainage Deduction & Taxes
Standard commercial contracts withhold 10% (or 5% on public works).
6. Conditional Lien Waiver & Signatures
Apex Electrical Contractors LLC
John Miller, Master Electrician
1040 Industrial Pkwy, Suite B, Austin, TX 78701
Phone: (555) 342-8921 • Email: billing@subcontractor.com
License #: C-10 License #1094821 • EIN/Tax ID: 84-9182371
INVOICE
Invoice #: INV-1042
Date: 2026-08-29
Due Date: 2026-09-28
Terms: Net 30 Days
General Contractor (Bill To)
Vanguard Commercial Builders Inc.
Attn: Mark Stevens (Project Manager)
500 Commerce Blvd, Suite 400, Dallas, TX 75201
ap@vanguardbuilders.com
Job Site & Subcontract Info
Oakridge Medical Center - Phase 2
📍 4200 Grand Parkway, Building C, Houston, TX 77001
Subcontract #: SC-2026-089
PO #: PO-9941
Phase/Lot: Building C - 2nd Floor Rough-in
| # | Work / Materials Description | Type | Qty | Unit Rate | Total ($) |
|---|---|---|---|---|---|
| 1 | Rough-in branch circuits for 2nd floor medical suites | labor | 38 hrs | $85 | $3,230.00 |
| 2 | 200A main service distribution panel upgrade | labor | 1 ea | $1,850 | $1,850.00 |
| 3 | 12/2 Romex copper wiring & metal conduit supplies(Cost: $780 + 15% contractor markup) | material | 1 lot | $780 | $897.00 |
| 4 | SCO #1: Level 2 commercial EV charging circuit drop | change_order | 1 ea | $950 | $950.00 |
CONDITIONAL WAIVER AND RELEASE ON PROGRESS PAYMENT
Statutory FormatUpon receipt of payment in the full net amount of $6,308.30, and when the check or wire transfer has been properly cleared and honored by the bank, the undersigned Subcontractor hereby waives and releases any and all mechanics' lien rights, stop payment notices, and payment bond claims for labor, services, equipment, or materials furnished to Vanguard Commercial Builders Inc. on the project known as Oakridge Medical Center - Phase 2 (Subcontract #SC-2026-089), located at 4200 Grand Parkway, Building C, Houston, TX 77001 through the billing date of 2026-08-29.
This document is expressly conditioned upon actual receipt of collected funds and does NOT cover retainage withheld ($692.7), unapproved change orders, or work furnished after the invoice date.
John Miller, Master Electrician
Title: Managing Partner • License: C-10 License #1094821
Date: 2026-08-29
Attn: Mark Stevens (Project Manager)
Title: Project Manager / Superintendent
Date: ________________________
Subcontractor Retainage & Cash Flow Simulator
Simulate your progress payments, GC holdback deductions, and final punch-list retainage release.
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Essential Guide to Construction Subcontractor Invoicing & Pay Apps
📋 Mandatory Checklist to Avoid GC Payment Delays
General contractors manage dozens of separate job sites and budgets simultaneously. Subcontractor invoices submitted without critical cost coding or statutory clauses are frequently held up for 30 to 60 days. Always ensure your invoice contains:
- Physical Job Site Address: Mandatory for GC cost accounting and lien filing deadlines.
- Subcontract Agreement & PO Number: Enables the GC’s accounting department to match your draw against master contract line items.
- Itemized Labor & Materials with Signed Change Orders (SCO): List extra work separately from base contract scope with approved change order numbers.
- Clear Retainage Breakdown: Delineate Gross Billed, 5%-10% Retainage Withheld, and Net Balance Due.
🛡️ Conditional vs. Unconditional Lien Waivers
Subcontractors should NEVER sign an unconditional lien waiver prior to payment clearing their bank account.
✓ Conditional Progress Waiver (Included): Releases your mechanics' lien rights only when the GC's check or wire actually clears the bank.
✕ Unconditional Waiver: Forfeits all legal claim rights immediately upon signing—even if the GC's check subsequently bounces.
Frequently Asked Questions
Clear, straightforward answers about subcontractor retainage, lien waivers, and billing formats.
Q: What is the standard retainage percentage on construction subcontractor invoices?
The standard retainage rate on commercial and residential construction projects is typically 10%, though many public works and modern private contracts limit it to 5%. Retainage is withheld from each progress payment and released in full upon substantial completion and punch-list sign-off. You can toggle between 0%, 5%, 10%, or custom percentages directly in our generator.
Q: How does a conditional lien waiver protect me as a subcontractor?
A conditional lien waiver protects you by legally releasing your mechanics' lien rights ONLY after the payment actually clears your bank account. If the general contractor's check bounces or the wire fails, your legal lien rights against the property remain 100% intact. You should always include a conditional waiver with your progress invoices.
Q: Can I bill for signed change orders on this subcontractor invoice?
Yes, you can add separate line items specifically designated as Signed Change Orders (SCO #) with their agreed labor hours, material costs, and markup. Itemizing change orders separately from original contract scope prevents GC project managers from rejecting your invoice during audit.
Q: Is this subcontractor invoice generator completely free without an account?
Yes, Subcontractor Invoice Generator is 100% free to use with zero registration, zero email forms, and zero server storage. You can create, calculate retainage, and export high-resolution US Letter or A4 PDFs instantly in your browser.
Q: Why is the job site address required on subcontractor invoices?
General contractors manage dozens of separate job sites and budgets simultaneously, making the physical job site address mandatory for cost coding and lien tracking. Omitting the job site address or lot number is the number one reason GC accounts payable departments delay payment.
Q: How does the UK Construction Industry Scheme (CIS) calculation work?
Under UK HMRC CIS rules, the contractor must deduct tax (usually 20% for registered subcontractors or 30% for unverified subcontractors) exclusively from the gross labor amount. Materials, equipment hire, and consumable costs are exempt from CIS deductions. Our UK CIS template automates this exact calculation.
Q: Does my invoice data get saved if I close or refresh my browser?
Yes, your invoice draft is automatically saved in your browser's private LocalStorage on every keystroke. Your data never touches our servers, ensuring complete privacy, and you can resume editing or clear your draft at any time.
Q: What is the difference between Progress Billing and Time & Materials (T&M)?
Progress Billing bills a percentage of a fixed contract value based on completion milestones to date, whereas Time & Materials (T&M) bills for actual labor hours worked plus direct material costs marked up by an agreed percentage. Our tool allows you to switch between both modes with a single click.