What should a contractor invoice include?

A contractor invoice should include your business name, address, and contact information; the customer name and address; a unique invoice number and date; itemized list of services or materials with unit costs and quantities; subtotal, any applicable taxes, and total amount due; payment terms and accepted payment methods; and your contractor license number if required in your state.

How do contractors send invoices?

Most contractors send invoices via email with a PDF attachment or a payment link. Text-based payment links (where the customer taps a link to pay online) have increasingly high completion rates — some field service platforms report 85%+ of payment links sent by text are paid within 24 hours. Paper invoices are still common in some trades but slower to get paid.

Should I charge sales tax on contractor invoices?

It depends on your state and what you are invoicing for. In most states, labor for contractor services is not taxable but materials are. Texas, for example, taxes certain contractor services and materials differently based on job type. Check with your accountant or the Texas Comptroller's office for current rules in your market.

How quickly should a contractor send an invoice?

Same day as job completion whenever possible. The faster you invoice, the faster you get paid, and the less likely the customer is to dispute anything — their memory of what was agreed is clearest right after the job. Contractors who invoice same-day consistently get paid 40-60% faster than those who batch invoices weekly.

What is a good invoice number system for contractors?

A simple sequential system works fine: start at 1001 and go up from there, or use a date-based system like 2026-0701-001 (year-month-day-sequence). The key is that every invoice has a unique number so you can track payment status and reference specific invoices in conversations with customers.

Free Contractor Invoice Template Generator

Michael Carpenter · July 9, 2026

A professional invoice is one of those things that takes 5 minutes to do right and matters more than most contractors realize. Customers who receive clean, detailed invoices pay faster, dispute less, and are more likely to leave a good review. Customers who receive a handwritten total on a work order take longer to pay and have more to wonder about.

Use the tool above to generate a professional invoice for your trade. Copy it directly or download it — no account required.

What every contractor invoice needs

Whether you are using the tool above or building your own template, every contractor invoice should include:

Your business information

Business name, address, phone, and email
Contractor license number (required in many states, including Texas HVAC and electrical)
Logo if you have one

Customer information

Name and service address
Billing address if different from service address
Contact phone or email for follow-up

Invoice details

Unique invoice number (even a simple sequential number — 1001, 1002 — works)
Invoice date
Due date and payment terms ("Net 30" or "Due upon receipt" are most common for contractors)

Itemized services and costs

Each service listed separately with a description, quantity, and unit price
Materials listed separately from labor (important for tax purposes in many states)
Subtotal, tax (if applicable), and total amount due

Payment information

Accepted payment methods (check, credit card, ACH, Venmo, etc.)
Where to send payment or a payment link if you accept online payment

Why itemization matters

Vague invoices ("Services rendered — $850") create more disputes than itemized ones. When a customer can see exactly what they paid for — 3 hours of labor at $95/hour, 1 capacitor at $45, 1 service call fee at $75 — there is less to question.

Itemization also matters for your own records: warranty tracking, materials cost analysis, and tax documentation all require you to know what was done and what it cost. Keeping that information in your invoice from the start saves hours at tax time.

Getting paid faster

The invoice is only useful if it gets paid. A few things that meaningfully affect speed of payment:

Send it the same day. Contractors who invoice same-day consistently report getting paid 40-60% faster than those who batch invoices. The customer's memory of what was agreed is clearest right after the job.

Include a payment link. If you accept online payment, include a link directly in the invoice. Removing friction from the payment step — tap, enter card, done — increases on-time payment significantly compared to check-based billing.

Text the invoice, do not just email it. Emails get buried. A text with a payment link gets opened within minutes. If you are using a platform that supports text-to-pay (Housecall Pro, Podium, or similar), this is one of the highest-value features for cash flow.

State your terms clearly. "Due upon receipt" means different things to different customers. "Payment due within 7 days — we accept credit card, check, or bank transfer" is unambiguous.

Invoice vs. estimate vs. quote

These terms get used interchangeably but they mean different things:

Estimate — approximate cost before the job, not binding
Quote — fixed price for a defined scope of work, binding once accepted
Invoice — request for payment after work is completed

If you gave a quote before the job, the invoice total should match the quote total unless the scope changed — and if it changed, that conversation should happen before you invoice, not after the customer sees a number they did not expect.

When to follow up on unpaid invoices

Most unpaid invoices are not intentional — the customer got busy, the email got buried, or they forgot. A simple follow-up sequence:

Day 7: Friendly reminder — "Just checking in on invoice #1042 — let me know if you have any questions"
Day 14: Second reminder with a direct payment link
Day 30: Phone call — most disputes or concerns surface here
Day 45+: Formal demand or collections if you use them

Most invoices that go 30+ days unpaid without any follow-up could have been resolved with a day-7 text. Build the follow-up into your process before the invoice goes out.