What should a professional service invoice include?

Every invoice should include: your business name, contact details, and license number; the customer’s name, service address, and any PO or job number; itemized labor and parts with billable hours and quantities; and a clear financial summary showing subtotal, taxes, fees, and the total due.

Should I charge tax on labor?

It depends on your state. Some states tax labor, some only tax materials, and some tax both. Check with your state’s department of revenue or ask your accountant to make sure your invoices are compliant.

How do I handle discounts on an invoice?

Show the discount as a separate line item so the customer sees the original price and the savings. This makes the discount feel real and avoids confusion over the final total.

What payment terms should I set?

Standard practices include: Net 7 (7 days) for residential repairs, Net 30 for large commercial projects, and Due on Receipt for emergency calls. Sending digital invoices with automated reminders can significantly reduce your collection time.

How do I send an invoice to a customer?

The fastest way to get paid is digital delivery — email a PDF or send a secure text link. According to a QuickBooks survey, businesses that send digital invoices get paid up to 2x faster than those using paper. Most customers prefer a link on their phone so they can pay instantly via card or bank transfer.

Create professional contractor invoices. Add labor, parts, taxes, and discounts, then save as PDF. Learn more about invoicing

Contractor invoice generator

Create professional contractor invoices. Add labor, parts, taxes, and discounts, then save as PDF.

Invoice number

Logo

Upload logo

Purchase order

Your company details

Bill to

Invoice date

Due date

Line items

Item descriptionUnit costQuantityAmount

Notes / payment terms

Subtotal$0.00

Tax (max 30%)

Discount

Total$0.00

Nice invoice. Now stop chasing payments — Workiz handles scheduling, dispatching, collections, and follow-ups, all in one place.

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How to create a professional field service invoice

A professional field service invoice does more than just ask for money. It tells the customer exactly what they are paying for, builds trust, and helps you get paid faster. A vague invoice invites questions, delays, and disputes. Whether you are writing up an HVAC service receipt, a plumbing repair bill, or an electrical installation summary, every document should include:

Your business info — Company name, address, phone number, and license number.
Customer info — Name, service address, and any PO or job reference number.
Itemized labor and parts — List each service and part separately with billable hours, unit price, and line total. Clearly state quantities for materials like lbs of refrigerant or ft of piping. Customers pay faster when they see exactly what they are being charged for.
Tax, fees, and discounts — Show these as separate lines so the final number is easy to verify.
Payment terms — When payment is due and how the customer can pay (check, card, online).

This tool builds all of that into a clean, printable invoice you can hand to a customer on the spot or save as a PDF. If you need help figuring out what to charge, start with the service price calculator or the hourly rate calculator.

Frequently asked questions

How to create a professional field service invoice

Your business info — Company name, address, phone number, and license number.
Customer info — Name, service address, and any PO or job reference number.
Itemized labor and parts — List each service and part separately with billable hours, unit price, and line total. Clearly state quantities for materials like lbs of refrigerant or ft of piping. Customers pay faster when they see exactly what they are being charged for.
Tax, fees, and discounts — Show these as separate lines so the final number is easy to verify.
Payment terms — When payment is due and how the customer can pay (check, card, online).

Frequently asked questions