An invoice is the cornerstone of business transactions — it's your formal request for payment after delivering work or products. Think of it as a detailed receipt sent before payment, containing all the essential information a client needs to pay you correctly and on time.
Unlike a receipt (which confirms payment already received) or an estimate (which provides pricing upfront), an invoice is sent after work completion but before payment. It serves as both a bill and a legal record of the transaction, helping businesses track income and clients understand exactly what they're paying for.
Example
After completing a website design project, you send an invoice to the client listing 'Website Design - 40 hours @ $100/hr = $4,000' with payment terms 'Net 30' and your payment details.
Why It Matters for Freelancers
For freelancers and small businesses, invoices are how you get paid. Professional invoices establish credibility, reduce payment delays, and provide documentation for taxes and business records.
Related Terms
Net 30
Payment terms that require the client to pay the invoice within 30 days of the invoice date.
Due on Receipt
Payment terms requiring immediate payment upon receiving the invoice.
Estimate vs Quote
An estimate is an approximate cost projection, while a quote is a fixed price commitment for specific work.
Invoice FAQs
What's the difference between an invoice and a receipt?
An invoice is sent before payment to request money owed, while a receipt is given after payment to confirm money received.
When should I send an invoice?
Send invoices immediately after completing work or delivering products. For ongoing services, establish a regular billing schedule.
What should every invoice include?
Business details, client details, invoice number, date, description of work, amount due, payment terms, and how to pay.
Master Business Terms with Professional Invoicing
Put your knowledge to work with professional invoices that use proper business terminology and payment terms.