Free Estimate Templates
Professional estimate templates for contractors, consultants, and service providers. Send clear cost breakdowns before work begins.
Choose your estimate type
Click any template to open the live editor, preview the design, and export as PDF.
Estimate vs Quote vs Invoice
Three documents, three different purposes in the billing workflow.
Convert estimates to invoices in one click
Create an estimate, get client approval, then convert it directly to an invoice — no re-entry needed. Eonebill keeps everything connected.
Frequently Asked Questions
What is the difference between an estimate and an invoice?
An estimate is a preliminary document that outlines the expected costs of a project before work begins. An invoice is a formal request for payment after work is completed. Estimates are non-binding, while invoices represent the final amount owed.
What is the difference between an estimate and a quote?
An estimate is an approximation that can change based on actual work performed. A quote is a fixed price commitment — once accepted, the price typically does not change. Quotes offer more price certainty for clients.
Is an estimate legally binding?
A basic estimate is usually not legally binding, but if you include specific terms, pricing, and the client signs it, it can become a binding contract. Always clarify the binding nature in writing before starting work.
Can I convert an estimate into an invoice?
Yes. Once work is complete, you can convert your estimate into an invoice by finalizing quantities and applying any necessary adjustments. Eonebill makes this seamless with automatic estimate-to-invoice conversion.
How long is an estimate valid?
Most estimates include a validity period of 15 to 30 days. After that, you should issue a revised estimate if costs have changed. Always include an expiration date on your estimate.