Invoice and Quotation Software

From approved quote to paid invoice, without retyping the job.

Keep the price you agreed and the amount you bill connected. InvoiceSonic helps small businesses create a clear quotation, carry the approved job into an invoice and track payment from the same client record.

Quotes and invoices together · GST and sales-tax ready

Do not rebuild an approved quote by hand — Retyping descriptions, quantities and rates creates avoidable disputes. Keep the accepted scope visible when the quote becomes an invoice.

Create your invoice here — free

Enter the actual job details, review the totals and preview your invoice. You can start without an account. Downloads follow the free-tool limits; saving, tracked sending and reminders are available with an account.

Create your invoice online

Your business
Bill to (client)
Invoice details
Line items
Description Qty Unit price Tax %
Totals
Payment details
Notes
Open interactive editor

What you get

Professional quotations

Set out the scope, quantities, rates, tax, validity period and terms before the client approves the work.

Quote-to-invoice workflow

Use the accepted quotation as the basis of the invoice so the description and agreed price remain consistent.

Deposits and stages

Show deposits, milestones or progress amounts clearly rather than hiding them in notes.

Client records

Keep the quote and later invoices attached to the same saved customer details.

Invoice tracking

See whether the invoice was sent, viewed, paid or overdue after the quote has done its job.

Payment reminders

Follow up on the invoice automatically without changing the original quotation record.

How it works

  1. 1

    Describe the scope and price

    Create a quotation with the deliverables, exclusions, tax treatment, validity date and payment schedule.

  2. 2

    Record approval and any changes

    Keep the accepted version as the commercial reference and add approved variations before invoicing.

  3. 3

    Create and track the invoice

    Carry the agreed work into the invoice, deduct any deposit and monitor the balance through payment.

Keep the agreed price attached to the invoice

Create your first quote and manage the billing workflow in one account.

Start the 7-day trial

Frequently asked questions

What is invoice and quotation software?

It is a system for preparing a price proposal before work starts and an invoice after the client approves or receives the work, while keeping customer and job information consistent.

What is the difference between a quotation and an invoice?

A quotation proposes the scope, price and terms before a sale is final. An invoice requests payment for work or goods supplied. A quote is not a tax invoice and should not be used to claim tax credits.

Can I invoice a deposit from a quotation?

Yes. State the deposit in the quotation, then issue an invoice for that amount. On the final invoice, show the full job value and deduct the deposit already paid.

Can the same software handle GST and sales tax?

Yes. InvoiceSonic supports Australian GST fields and US sales-tax labels, with country and currency settings that match the invoice.