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Free tool
Free estimate generator
Write a professional estimate or quote for your customer, then download it as a PDF or print it. Free, no sign-up, and nothing you type is sent to our servers.
In the print window choose “Save as PDF”.
Turn accepted estimates into invoices
In NartPay OS you send estimates by e-mail, your customers accept them in their customer portal, and an accepted estimate becomes an invoice in one click. Then track it until it is paid.
Try NartPay free for 14 daysEstimates and quotes: common questions
What is the difference between an estimate and an invoice?
An estimate (or quote) tells the customer what the work will probably cost before you start. An invoice asks for payment after you deliver. Many businesses send an estimate first and turn it into an invoice once the customer agrees.
What should an estimate include?
Your business name and contact details, the customer, an estimate number and date, a clear list of the work or products with quantities and prices, sales tax if it applies, the total, and how long the prices are valid.
Is an estimate the same as a quote?
The words are often used the same way. Some businesses use “quote” for a fixed price and “estimate” for an approximate one. Say clearly on the document which one you mean.
How long should an estimate be valid?
Thirty days is common, but choose what fits your costs. If material prices change often, use a shorter period and write the “valid until” date on the estimate.
More free tools for your business
Free invoice generator
Create an invoice with your logo and download it as a PDF.
Make an invoice →Free receipt maker
Give your customer a receipt marked “Paid” for a payment you received.
Make a receipt →Late fee calculator
See how many days an invoice is late and what the late fee comes to.
Calculate a late fee →