All posts

How to Fill Out a Receipt Book (Step by Step)

A clean receipt is just a few fields done right: date, receipt number, who paid, what they bought, the totals, how they paid, and a signature. Here is exactly how to fill one out.

Mylo Mylo Team June 9, 2026 4 min read

What a complete receipt needs

A receipt is just proof that money changed hands for something. To do its job, it has to answer a few simple questions: when, who, what, how much, and how it was paid. Fill in those fields cleanly and you have a record that holds up for returns, expense reports, and taxes.

Here is everything a good receipt should show:

  • The date of the sale
  • A unique receipt number
  • Your business name and contact details
  • The customer's name (and contact, if you need it)
  • An itemized list of what was sold
  • Quantities and prices for each item
  • The subtotal, tax, and total
  • The payment method
  • A signature

Step by step: filling out the receipt book

1. Date and receipt number

Start at the top. Write the date of the sale, then a unique receipt number. Most receipt books come pre-numbered, but if yours doesn't, use a simple running sequence like 001, 002, 003. Sequential numbering is the single easiest habit for keeping your records straight, because a gap instantly tells you a receipt is missing.

2. Customer and business details

Write the customer's name. If the sale needs follow-up, like a deposit or a service call, add their phone, email, or address. Include your own business name and contact details so the customer knows exactly who they paid. For a business expense, the buyer's name on the receipt is what ties it to them later.

3. Itemize what was sold

This is the heart of the receipt. Give every item or service its own line. For each one, write:

  • A short description of the item
  • The quantity
  • The unit price
  • The line total (quantity times unit price)

An itemized receipt is what expense systems and the IRS actually want, because it proves what was bought, not just that a total was paid. A lump sum with no breakdown is much weaker as a record.

4. Subtotal, tax, and total

Add up all the line totals to get the subtotal. Calculate sales tax on that subtotal using your local rate, and write it on its own line. Then add the subtotal and tax together for the final total. Keep these three numbers separate and clearly labeled. Burying tax inside one big number is a common cause of confusion at bookkeeping time.

Tip: Double-check your math before you tear out the page. Once the customer has the top copy, fixing an error means voiding the receipt and writing a fresh one.

5. Payment method and signature

Note how the customer paid: cash, card, or check. If it was a check, jot the check number. If a balance is still owed, write the amount paid and the balance due so both sides are clear. Then sign the receipt. A signature, yours or the customer's depending on the situation, confirms the transaction is real.

6. The carbon copy

Most receipt books have two layers: a top sheet and a carbon (duplicate) copy underneath. When you press firmly with a pen, your writing transfers to the copy. Give the customer the top copy and keep the carbon copy in the book. That copy is your proof of the sale and the backbone of your own records, so never give both away.

Common mistakes to avoid

A few small slips turn a clean receipt into a useless one:

  • Skipping the receipt number. Without it, you can't tell receipts apart or notice when one goes missing.
  • Writing one lump sum. A total with no itemized breakdown is weak proof. List the items.
  • Forgetting to separate tax. Roll tax into the total and you'll struggle to file sales tax correctly.
  • Pressing too lightly. If the carbon copy is faint or blank, you have no record. Press firmly and use a hard surface underneath.
  • Giving away the carbon copy. The top copy is the customer's; the carbon is yours. Mixing them up leaves you with nothing.
  • Reusing numbers or leaving gaps. Keep the sequence clean so your books reconcile at tax time. It also helps to know what makes a receipt itemized, since that detail is what your records actually need.

The faster way: let Mylo handle receipts automatically

Handwriting receipts and filing carbon copies works, but it is slow and easy to get wrong. Mylo puts the whole thing on autopilot. It finds receipts across your email inboxes and the stores you shop at, pulls the itemized version, and matches each one to the card transaction that paid for it. No carbon copies to lose, no totals to add up by hand.

Everything lands in one place, neatly categorized, and syncs clean expenses to QuickBooks. No new card needed, it works on top of the Visa, Mastercard, or Amex you already use. Free on iOS, Android, and the web.

Sources: General bookkeeping best practices. This is general information, not tax advice; check your local sales tax and recordkeeping rules.

Frequently asked questions

What information has to be on a handwritten receipt?

At minimum: the date, a receipt number, your business name, the items or services sold with their prices, the subtotal, any sales tax, the total paid, and the payment method. A signature and the customer's details make it more complete and easier to verify later.

Do I have to give the customer the original or the copy?

Give the customer the top (original) copy and keep the carbon copy underneath for your own records. The carbon copy is your proof of the sale, so never hand both away.

How do I write the receipt number?

Use a simple sequential system: 001, 002, 003 and so on. Many receipt books are pre-numbered. Sequential numbers make it obvious if a receipt is missing and keep your bookkeeping clean at tax time.

Is a handwritten receipt valid for taxes?

Yes. A handwritten receipt is valid as long as it clearly shows the date, what was sold, the amount, the tax, and who was involved. This is general information, not tax advice, so check your local rules. Keep your copy for your records.

Mylo

Mylo Team

The Mylo Team writes practical guides on receipts, expenses, write-offs and keeping your books clean, from the people building Mylo, the app that puts receipts and expenses on autopilot.

Put your receipts on autopilot

Mylo finds every receipt across your inboxes and stores, matches it to your card, and files clean expenses to QuickBooks. Free to start.

Download on the App Store Get it on Google Play