Invoice Generator

About the Invoice Generator

An invoice is the document that turns finished work into a payment request, and it is also the record both sides rely on later for taxes, bookkeeping, and disputes. A clear one answers four questions immediately: who is billing, who is being billed, what was delivered at what price, and when payment is due. The Invoice Generator on this page builds that document from a form. You fill in your business and client details, add line items, set a tax rate or discount if you need them, and the formatted invoice updates beside the form as you type.

The arithmetic is handled for you. Each line is quantity times rate, the subtotal is the sum of all lines, the discount comes off the subtotal, and tax is then calculated on the discounted amount. Because the preview and the totals come from the same inputs, you can catch a typo in a price before the client does. The currency symbol is a free text field, so the same tool works for dollars, euros, pounds, rupees, or any other symbol you type.

When the invoice looks right, the Print / Save as PDF button opens your browser's print dialog showing only the invoice, and you choose Save as PDF as the destination. Nothing is uploaded; the form lives in your browser tab, including any logo you add. That makes it a good fit for freelancers, tradespeople, tutors, and small businesses that need a professional invoice quickly and do not want to sign up for accounting software yet.

When to Use It

How to Use It, Step by Step

1. Upload your Business logo (optional) if you want one on the invoice. The image is read in your browser and used only in the preview; you can click Remove at any time to clear it.
2. Set the Currency symbol. It accepts up to three characters, so type the dollar sign, euro sign, pound sign, or a short code, and every amount on the invoice will begin with it.
3. Fill in From (your business) with your name and, in the box below it, your address, email, and phone number. These lines appear at the top left of the finished invoice.
4. Enter the client in Bill to (client) with their name and address or email. Use the exact legal or trading name your client uses so their accounts team can match it to their records.
5. Set the Invoice # (it starts as INV-001), then choose an Invoice date and a Due date using the date pickers. Dates only appear on the invoice once you pick them, and they display in year-month-day format.
6. Add your Line items. Each row has a description, a quantity, and a rate, and the amount is calculated for you. Use Add line item for more rows, and the remove button on a row to delete it, although at least one row always stays.
7. Enter the Tax rate (%) and Discount (%) if they apply. The discount comes off the subtotal first and tax is then applied to the discounted amount. A discount or tax line only appears in the preview when its value is above zero.
8. Type payment instructions into Notes / payment terms, check the live preview for errors, and click Print / Save as PDF. In the print dialog choose Save as PDF as the destination before saving.

Understanding Your Results

The preview is the result. At the top it shows your business name and contact details on the left and the word Invoice with the number and dates on the right. Below that sits the Bill to block and the table of line items, with Description, Qty, Rate, and Amount columns. A row with a blank description prints a dash, so fill every description in before sending to avoid confusion on the client's side.

The totals box shows Subtotal, then Discount and Tax lines only when they apply, and finally Total due in bold. To check your work, add the amount column by hand, subtract the discount percentage of that subtotal, and add the tax percentage of what remains. The total should match to within a cent. Amounts are shown to two decimal places with commas as thousands separators and a period as the decimal point, whichever symbol you use.

Before you send the invoice, read it as your client would. Make sure the invoice number is unique, the due date is after the invoice date, the notes explain how to pay, and your contact details are correct. Save the PDF with a file name that includes the client and invoice number so it is easy to find later. Because the tool does not store anything, keep a copy of every PDF in your own records.

More Worked Examples

Tips for Better Results

• Give every line item a specific description such as the date range, the deliverable, or the part number, so the client can match it to their purchase order and approve it without questions.
• Use a consistent invoice numbering pattern from your first invoice, such as the year followed by a sequence number, because some tax systems require unique, sequential numbers and gaps raise questions.
• State your payment terms in the notes box, for example the number of days allowed, the accepted payment methods, and any bank details, since clients pay faster when they do not have to ask.
• Use fractional quantities for partial units such as 1.5 hours or 0.25 of a day, which lets the line total come out right without you converting to a different rate.
• Save each finished PDF with the client name, invoice number, and date in the file name, and keep copies in a folder, because the tool does not remember invoices after you close the tab.
• Send the invoice promptly after completing the work and follow up on a set schedule if payment is late, since the sooner a client sees the bill, the sooner it enters their payment cycle.

Common Mistakes to Avoid

• Reusing an invoice number or skipping numbers makes bookkeeping and audits harder. Keep a simple log of numbers issued, and increase the number by one for every new invoice.
• Leaving the due date blank or vague invites late payment. Pick a specific date and repeat the payment terms in the notes box so there is no doubt about when payment is expected.
• Assuming tax is charged on the original subtotal leads to totals that disagree with the client's expectations. This tool discounts first and taxes the reduced amount, so confirm that matches the rules and the agreement you have with the client.
• Closing or refreshing the page before saving loses everything, because nothing is stored. Use Print / Save as PDF as soon as the invoice is finished, and keep your own copy.
• Using a negative line to record a deposit can distort tax, since it reduces the subtotal that tax is calculated on. Mention deposits already received in the notes unless your accountant says otherwise.

Assumptions and Limits

• The tool applies one tax rate and one percentage discount to the whole invoice. It does not support different rates per line, flat-amount discounts, shipping, or tips, so complex invoices may need a spreadsheet or accounting package.
• Totals are calculated at full precision and each displayed figure is rounded to two decimals, so on rare occasions the visible lines can differ from the total by one cent. For example, a 10.01 subtotal with a 15 percent discount and 7 percent tax shows 1.50 and 0.60 but a total of 9.10.
• Dates appear exactly as the date picker returns them, in year-month-day format, and the tool does not calculate due dates from payment terms such as net 30. Whether an invoice meets legal requirements for your country or industry is your responsibility.
• This is a general-purpose generator, not tax or legal advice. Rules for invoice contents, sales tax, VAT, and record retention differ by location, so check with an accountant or your tax authority if you are unsure.

Key Terms

Line item

A single row on an invoice describing one product or service, with its quantity, unit price, and total amount.

Subtotal

The sum of all line item amounts before any discount or tax is applied.

Payment terms

The agreed conditions for paying an invoice, including the deadline and accepted methods. Net 30 means payment is due thirty days after the invoice date.

Value-added tax (VAT)

A consumption tax added at each stage of supply in many countries, shown on invoices as a percentage of the taxable amount.

Purchase order

A document a client issues to authorize a purchase, often with a number that must appear on the matching invoice.

Credit note

A document issued to reduce or cancel an amount on an earlier invoice, used for refunds, corrections, or returned goods.