Itemized invoice: what it is and how to make one

What an itemized invoice is and why people ask for one

An itemized invoice is an ordinary invoice in which every product or service you charge for has its own line, showing what it is, how many, at what price, and what that line comes to. A lump-sum invoice puts the whole job on one line instead, such as "Kitchen repairs: $1,400.00". Both ask to be paid and both can be correct (although a UK VAT invoice needs some detail on each line, as explained below), but only the itemized one shows how you arrived at the total, so the person paying can check each charge against what they ordered, what you quoted, or what they saw being done. A lump sum works well enough when you agreed a fixed price and nobody needs to look closer; the moment someone has to check the figure, they'll want the lines.

Most people look this up because someone asked them for one. A larger client's accounts team often matches each invoice against the purchase order or quote it approved, line by line, and sends back anything it can't match, which delays your payment. An employee or contractor claiming expenses usually has to show their employer what was bought, not only how much was spent. A customer passing your invoice on to an insurer, or to a manufacturer under a warranty, may be asked which parts were replaced and how much of the bill was labor, and a landlord with several properties wants to see what was done at which address.

Itemizing also helps when a client questions a total. Instead of a vague feeling that the bill seems high, the conversation turns to one specific line, which you can explain or, if you got it wrong, correct. A breakdown that's on the invoice from the start answers most of those questions before anyone has to ask them.

What each line needs

Each line should answer the questions someone checking your invoice will ask: what was this, when, how much of it, at what price, and was tax added. That starts with a description that someone who wasn't there would understand, such as "Replace bathroom exhaust fan, Unit 2B" rather than "Materials" or "Work as agreed", because a vague line is the one an accounts team can't match and sends back. Add the date or period when the work ran over several days, or when the client checks invoices against timesheets or delivery notes, so each line can be matched to the day it happened.

The figures come next. Each line gives the quantity and the unit it's counted in, such as 3.5 hours, 2 days, 12 pieces or 140 miles, and the unit price, which is the price of one of those units. Multiplying the two gives the line total before tax, and the line also shows its tax rate, or no tax if it isn't taxed. With all of that on the page, the client can redo the sum on any line and see exactly where each part of the total comes from.

The unit matters more than it looks. A quantity of 3.5 could be hours, days or pieces, and the client can only check the line if they know which, and if the rate per unit matches the one you agreed. Group the work sensibly, too: a day on one project can be a single line with the tasks named in the description, rather than a dozen fifteen-minute lines, unless the client has asked for that level of detail. If you bill for time, the guide to invoicing for services goes further into hours, day rates and fixed fees.

Below the lines come the figures that pull them together. The subtotal adds up the line totals before tax. The tax summary then shows, for each rate you used, the amount the rate applies to and the tax on it, so the client can see that tax was charged only where it should be. A discount works best as its own line with a negative amount, such as "Returning-customer discount -$25.00", because the client then sees exactly what came off and from which part of the job. The total at the bottom is the subtotal plus tax, and it's the amount you're asking to be paid.

If you're VAT registered in the UK, the same layout carries VAT instead of sales tax, and some of the details a full VAT invoice has to show are given line by line. The full list is:

• A unique invoice number that follows on in sequence (you may use more than one series)
• The time of supply (tax point)
• The date of issue, if different from the time of supply
• Your name, address and VAT registration number (if you trade under another name, also the name and address you are VAT-registered under)
• Your customer's name and address
• A description that identifies the goods or services
• For each line: the quantity of goods or extent of services, the VAT rate and the amount excluding VAT
• The unit price (for countable goods or services, such as an hourly rate)
• The total amount excluding VAT
• The rate of any cash discount offered
• The total VAT charged, in pounds sterling (even if the invoice is in another currency)
• Zero-rated or exempt items: show clearly that no VAT is due on them, with a separate total
• Limited companies: the full company name as on the certificate of incorporation; the company number, registered office and part of the UK must be on business letters, order forms and websites — invoices aren't named there, but an invoice sent as a letter may count as one, so show them
• Sole traders using a business name: also your own name and an address where legal documents can be delivered
• Your contact details
• The total amount owed

The ones that matter here are the quantity, the VAT rate and the amount excluding VAT on each line, and the unit price for anything countable, such as an hourly rate. So when one invoice covers different goods and services, such as parts and labor, give each its own description with its quantity, VAT rate and amount excluding VAT, and show the unit price wherever there is one. Most lines will be at the standard rate of 20%, but some goods and services fall under the lower rates of 5% and 0%, so an invoice that mixes them has one row per rate in its tax summary, each with its net amount and its VAT. The UK invoice guide explains those rates and the other details on the list.

All of this applies only once you're registered for VAT, and the rule works the other way round if you aren't. Only a VAT-registered business may issue a VAT invoice: if you are not registered you must not show VAT, and if you do, HMRC can charge a penalty of up to 100% of the VAT shown and still collect that amount from you. If a VAT invoice shows more VAT than is due, you must pay HMRC the higher amount unless you correct the error with your customer by issuing a credit note. So a UK business that isn't registered leaves VAT off every line. This matters in the maker, because it fills in the standard rate once your country is set, and the steps at the end of this page show how to switch it off. To make clear to the client why there's no VAT, you can add the note "Not registered for VAT."

An itemized invoice example with the arithmetic

Here is a small repair invoice from a handyman business to a landlord, for work at one rental unit over two visits in October. The landlord files repair costs by property and was quoted labor plus parts, so every charge has its own line. Sales tax here is 8%, a round rate chosen only to keep the sums easy to follow. In the example the parts are taxed and the other lines aren't; on your own invoice, set the tax on each line to whatever applies to that item where you sell it.

Each line total is the quantity times the unit price: 3.5 hours at $65.00 come to $227.50, and two visits at $20.00 come to $40.00. The subtotal adds all five line totals, the negative discount included: $227.50 + $38.00 + $89.00 + $40.00 - $25.00 = $369.50. Sales tax applies only to the two taxed lines, which come to $127.00, so the tax is 8% of $127.00, or $10.16. The total due is $369.50 + $10.16 = $379.66.

Laid out like this, the landlord can check every figure without picking up the phone: that 3.5 hours over two visits is reasonable for the job, that $65.00 is the hourly rate in the quote, that the fan is the one that was fitted, and that tax was charged on the parts only. A single line reading "Repairs, Unit 2B: $379.66" asks for the same money but gives them nothing to check. The invoice examples show other common cases worked out line by line.

Turning a lump-sum invoice into an itemized one

Sometimes the request arrives after you've sent the invoice. You billed "Website redesign: $4,800.00", and the client's accounts team writes back asking for the same thing itemized. If the client hasn't received the invoice yet, simply rewrite it as lines. Once they have it, though, it's better not to send a second, different document under the same number, because two versions of invoice 1042 with different contents mean your records and theirs no longer match, and anyone looking later can't tell which one counts.

The clean route is to cancel the original with a credit memo (in the UK, a credit note) for its full amount, and then issue a new itemized invoice with a new number for the same work. The credit memo names the invoice it cancels, and the new invoice can say in its notes which one it replaces, for example "Replaces invoice 1042, canceled by credit memo CN-3." In both sets of books the original, the credit memo and the new invoice then add up to the amount owed once. If breaking the job down shows that the original total was wrong, the new invoice simply carries the right figure. The guide to credit notes explains what one shows and when else you'd use it.

In the UK, HMRC sets conditions on when a credit note can be used, so this route isn't always open to a VAT-registered business. A credit note corrects a VAT invoice already issued, after a genuine mistake or overcharge or an agreed price reduction, and must give the customer real value, as a refund or an offset against future supplies. A supplier that refunds a price reduction on a supply for which it had to issue a VAT invoice must give the customer a credit note within 14 days of the refund, at the VAT rate of the original supply; both sides then adjust their VAT, unless the customer can reclaim it all and both agree not to. If an invoice shows too much VAT, the supplier owes the higher amount unless it issues a credit note. So for a VAT invoice, use this route when the original contained a genuine mistake. If it was a correct VAT invoice and the client only wants more detail, check with your accountant before you cancel it.

In the maker, an invoice you sent from the maker, marked as sent or paid, or finalized by hand can no longer be edited, which is what keeps this kind of record straight. On that invoice, choose Create credit note: you get a credit note with the same client and the same lines at negative amounts, its own number (CN-1, CN-2 and so on), and a line on the PDF saying which invoice, by number and date, it corrects. Then duplicate the original invoice, which gives the copy the next invoice number, and replace its single line with the itemized ones. One catch: downloading or printing the PDF doesn't finalize an invoice, so if you emailed the PDF yourself, the maker still treats it as an editable draft. The client already has it, so mark it as sent first and follow the same steps instead of editing it in place.

Making an itemized invoice in the maker

The maker is built around lines, so an itemized invoice is what you get when you add one line per item. It runs in your browser, and you don't need an account to make the invoice and download the PDF.

1. Enter your business details and your client. You fill in your own details once, and clients are saved so you can pick them next time.
2. Add a line for each product or service, with a description, the quantity, the unit (hours, days, pieces, km and so on) and the unit price. If the work ran over several days, put the dates in the description.
3. Set the tax on each line. In the US, give the taxed lines your sales tax rate and leave the others without tax; in the UK, the standard VAT rate is filled in once your business country is set, and you can change it on any line. If you're in the UK but not registered for VAT, don't leave that rate on: switch on VAT exemption so no VAT appears on the invoice, because only a VAT-registered business may charge VAT.
4. Put a discount on its own line with a negative amount, such as -25. The totals and the tax take it into account.
5. Check the subtotal, the tax for each rate and the total, then download or print the PDF. With a free account you can also send it from the maker by email or as a link.

Lines are typed rather than pulled from a product list, so if you bill the same items often, duplicate an earlier invoice and change the quantities and dates. If you quoted the job first, choose Create invoice from this on the accepted quote: the invoice gets the same client, lines and prices and the next invoice number, which is exactly what an accounts team matching your invoice to the quote wants to see.