Invoice
An invoice is a document sent by a seller to a buyer requesting payment for goods or services delivered. It includes details like the invoice number, date, description of items, quantities, prices, payment terms, and the total amount due. In bookkeeping, creating an invoice records accounts receivab
Invoice Definition
An invoice is a document sent by a seller to a buyer requesting payment for goods or services delivered. It includes details like the invoice number, date, description of items, quantities, prices, payment terms, and the total amount due. In bookkeeping, creating an invoice records accounts receivable—money owed to you.
Invoice in Practice — Example
A freelance web developer completes a project for a local dentist's office. She creates an invoice in QuickBooks for $3,500 with Net 30 payment terms, itemizing 40 hours of development at $75/hour plus $500 for hosting setup. She emails the invoice on March 1st. QBO records $3,500 in accounts receivable. When the dentist pays on March 22nd, she records the payment, clearing the receivable and increasing cash.
Why Invoice Matters for Your Books
Invoicing is the engine of your revenue cycle. Without proper invoicing, you don't get paid—and your books don't reflect what you've earned. On accrual basis, an invoice creates revenue the moment you send it (because the work is done), regardless of when cash arrives.
Consistent invoicing also creates an audit trail. Each invoice has a unique number, date, and detailed description of what was sold. This documentation is essential for tax reporting, dispute resolution, and financial analysis.
Late or inconsistent invoicing is one of the top cash flow killers for small businesses. If you deliver the work but wait two weeks to send the invoice, you're pushing your payment out by at least two weeks—often more. Invoice promptly, follow up systematically, and your cash flow improves dramatically.
How Invoice Shows Up in QuickBooks
In QBO, create invoices via + New → Invoice. Add the customer, line items, amounts, and payment terms. QBO automatically posts the invoice to Accounts Receivable (Balance Sheet) and Revenue (P&L). When the customer pays, record it via Receive Payment, which moves the amount from AR to Cash. Track outstanding invoices with the Accounts Receivable Aging report. Set up automated payment reminders to reduce late payments.
Common Mistakes
FAQ
Q: What's the difference between an invoice and a receipt?
A: An invoice requests payment before or after delivery. A receipt confirms payment has been received. They're different stages of the same transaction.
Q: When should I send an invoice?
A: As soon as the work is complete or the product is delivered. For ongoing services, invoice on a consistent schedule (weekly, biweekly, or monthly). Don't delay.
Related Terms
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Related Terms
Net profit is the total amount of money remaining after all business expenses, taxes, and interest payments have been subtracted from total revenue. It's identical to net income—both terms describe the "bottom line" profit that shows whether the business made or lost money during a specific period.
A tax deduction for business-related driving, calculated using the IRS standard mileage rate ($0.70/mile for 2026) or actual vehicle expenses.
Revenue recognition is the accounting principle that determines when revenue should be recorded in your books. Under accrual accounting, revenue is recognized when it's earned — meaning the product is delivered or the service is performed — regardless of when payment is received. This ensures financ
A receivable (or "accounts receivable") is money owed to your business by customers for goods or services you've already delivered. When you send an invoice with payment terms like "net-30," the amount becomes a receivable — an asset on your balance sheet representing future cash inflow. Receivables
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