Time and Materials Invoice Template
When the scope of a project is uncertain—when you are repairing a water-damaged building, consulting on a business transformation, or managing a research engagement with evolving deliverables—fixed-price billing becomes a gamble that neither you nor your client should have to take. The time and materials (T&M) invoice template is designed specifically for these situations, allowing you to bill your clients for actual time invested and actual costs incurred, with full transparency and documentation. It is the fairest billing method for open-ended work because both parties pay and are paid only for what actually happens.
Eonebill's free time and materials invoice template provides the detailed structure that T&M billing demands: separate sections for labor time and rates, materials costs with markup applied, other direct costs, and a running total against any not-to-exceed ceiling. The result is an invoice that protects you from scope creep disputes, gives your client the visibility they need to manage their budget, and builds the kind of trust that leads to long-term relationships. Download it today and bring predictability and professionalism to your open-ended projects.
What Is a Time and Materials Invoice?
A time and materials invoice is a billing document used under a T&M contract—a type of agreement where the client agrees to pay the contractor based on the actual time worked (at pre-agreed hourly or daily rates) plus the actual cost of materials and other direct expenses (typically with a disclosed markup). Unlike a fixed-price contract, where the total is established upfront, a T&M contract is inherently open-ended and is designed for situations where the final scope cannot be precisely determined at the outset.
T&M contracts are common in several industries and scenarios:
- Construction and Renovation: When repairing a building after fire or water damage, the full extent of damage is unknown until work begins. T&M allows the contractor to address all discovered issues without renegotiating the contract for each new finding.
- Consulting and Advisory: Strategic consulting engagements often evolve as new information emerges. T&M ensures the consultant is compensated for all work performed while the client pays only for actual hours invested.
- Software Development: Agile software development projects frequently use T&M billing because the backlog of features is continuously refined based on stakeholder feedback.
- Maintenance and Repair Services: Ongoing maintenance contracts often use T&M for non-preventive work, where the amount of repair needed cannot be predicted in advance.
- Legal Services: While often structured as hourly billing, complex legal matters may use T&M frameworks for large-scale litigation or transactions.
The key advantage of the T&M invoice format is that it aligns incentives: the contractor is not penalized for discovering additional work that needs to be done, and the client is not overcharged for work that was estimated but not needed. This fairness depends on transparent, well-documented invoicing—which is exactly what Eonebill's template provides.
How to Create a Time and Materials Invoice
Creating a T&M invoice requires more documentation than fixed-price billing. Here is how to do it properly.
Step 1: Establish Clear Rate Cards in Your Contract
Before work begins, agree on a rate card that specifies labor rates by category or skill level (e.g., Principal Consultant at $200/hr, Senior Consultant at $150/hr, Associate at $95/hr). Agree on the markup percentage for materials and other direct costs. These rates must be documented in your contract before any invoice is issued.
Step 2: Track Time Daily
For T&M work, daily time tracking is essential. Log each team member's hours against the project, including a brief description of the task performed. This contemporaneous record is your evidence of the work performed and protects both you and the client.
Step 3: Document Material Purchases
Retain receipts for every material purchase. Note when and where each material was used on the project. This documentation supports your material line items and justifies the markup.
Step 4: Monitor Against the NTE Cap
If your contract includes a not-to-exceed ceiling (which is standard best practice for T&M contracts), track cumulative costs against this cap throughout the project. Alert the client when you are approaching the NTE limit so they can make an informed decision about whether to authorize additional spend or reduce scope.
Step 5: Populate the Template
Using Eonebill's time and materials invoice template, fill in your labor section with each time entry: date, task description, worker name or category, hours, rate, and total. Then fill in the materials section with itemized costs and the markup applied. The template calculates the subtotals and grand total automatically.
Step 6: Show Cumulative Project Totals
For ongoing projects, Eonebill's template includes a section to show cumulative costs to date versus the NTE cap. This transparency prevents scope creep disputes and builds client confidence.
Step 7: Attach Supporting Documentation
Attach time logs and material receipts to your invoice or make them available via a shared document link. This level of documentation eliminates "where did this number come from?" questions and speeds up payment approval.
Key Elements of a Time and Materials Invoice
Labor Rate Schedule: Clearly states each labor category and its corresponding rate, agreed upon in advance.
Time Log Entries: Each entry should include: date, task description, worker name or category, hours worked, hourly rate, and calculated total.
Materials and Expense Line Items: Each item should show the vendor, description, quantity, actual cost, markup applied, and line total.
Markup Disclosure: The percentage or fixed fee applied to materials and subcontractor costs, disclosed transparently.
Subtotals: Separate subtotals for labor, materials, and other direct costs.
Not-to-Exceed Ceiling: If applicable, the agreed maximum cost and the remaining budget.
Cumulative Costs to Date: For ongoing projects, the running total of all billings to date.
Grand Total: The final amount due for this billing period.
Sample Time and Materials Invoice Example
Here is an example of a T&M invoice for a consulting engagement with a NTE cap of $75,000:
Business: Apex Strategy Partners LLC
200 Park Avenue, New York, NY 10166
Contact: billing@apexstrategypartners.com
Bill To: Metropolitan Hospital System
500 Healthcare Drive, New York, NY 10001
Attn: Chief Operating Officer
Invoice No.: INV-2026-TM-003
Date: April 14, 2026
Billing Period: March 1 – March 31, 2026
Project: Operational Efficiency Assessment
NTE Cap: $75,000.00
Cumulative Billed to Date: $42,500.00
Labor:
| Date Range | Description | Category | Hours | Rate | Total |
|---|---|---|---|---|---|
| Mar 1-7 | Discovery and stakeholder interviews | Senior Consultant | 32 | $175.00 | $5,600.00 |
| Mar 1-7 | Project management and coordination | Associate Consultant | 16 | $95.00 | $1,520.00 |
| Mar 8-21 | Process mapping and data analysis | Senior Consultant | 48 | $175.00 | $8,400.00 |
| Mar 8-21 | Benchmarking research | Associate Consultant | 40 | $95.00 | $3,800.00 |
| Mar 22-31 | Draft recommendations and presentation | Senior Consultant | 24 | $175.00 | $4,200.00 |
| Mar 22-31 | Client workshop facilitation | Principal | 8 | $250.00 | $2,000.00 |
Total Labor: $25,520.00
Materials and Direct Costs:
| Description | Actual Cost | Markup (10%) | Total |
|---|---|---|---|
| Healthcare industry benchmarking report (Gartner) | $1,800.00 | $180.00 | $1,980.00 |
| Travel expenses (flights, accommodation) | $2,340.00 | $234.00 | $2,574.00 |
| Workshop materials and printing | $285.00 | $28.50 | $313.50 |
Total Materials and Expenses: $4,867.50
Subtotal Labor: $25,520.00
Subtotal Materials: $4,867.50
Total This Invoice: $30,387.50
Cumulative Billed to Date: $42,500.00
Remaining NTE Budget: $32,500.00
Payment Terms: Net 30. Please reference Invoice No. INV-2026-TM-003.
Related Time and Materials Templates
Find the right T&M invoice template for your industry:
- Consulting Time and Materials Invoice — For strategy and management consultants
- Construction Time and Materials Invoice — For contractors and builders
- Engineering Time and Materials Invoice — For engineering and technical firms
- Software Development T&M Invoice — For IT and software teams
- Legal Time and Materials Invoice — For attorneys and law firms
Get Started with Your Time and Materials Invoice Template
Time and materials billing is the fairest approach for open-ended, variable-scope projects—but only when it is documented with precision and transparency. Eonebill's free T&M invoice template gives you the structure to bill accurately, communicate clearly, and protect both yourself and your client. Download it today and bring professionalism to your next project.
Download the Free Time and Materials Invoice Template Now and take control of your project billing.