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Invoices

Invoices turn completed work into a clear request for payment. This collection covers invoice basics, document types, payment terms, professional formatting, software selection, and follow-up.

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Invoices 4 min read

Should You Bill a Flat Rate or Hourly?

Flat-rate billing charges an agreed amount for a defined result, while hourly billing charges for the time spent. The better method depends on scope certainty, change risk, efficiency, and how clearly the work can be measured.

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Invoices 3 min read

How to Invoice for Services

A service invoice should identify the provider and client, explain what work was completed, show how each charge was calculated, and tell the client exactly how and when to pay.

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Invoices 3 min read

How to Format an Invoice

Good invoice formatting helps a client identify the document, verify the work, find the amount due, and make payment without searching through dense text.

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Invoices 3 min read

What Is a Commercial Invoice?

A commercial invoice documents an international sale of goods and provides information used by customs authorities for clearance, valuation, duties, and taxes.

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Invoices 3 min read

Bill or Invoice: What’s the Difference?

Bills and invoices can describe the same amount owed, but the words often reflect different timing, detail, and perspective. An invoice commonly requests payment with transaction details; a bill often emphasizes an amount due now.

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Invoices 3 min read

How to Handle Outstanding Invoices

An outstanding invoice is an issued invoice that has not been fully paid. A consistent process separates ordinary delay, administrative problems, genuine disputes, and serious nonpayment.

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Invoices 3 min read

What Is an Electronic Invoice?

An electronic invoice is created, transmitted, received, and processed digitally. In some settings it means a structured data document, not simply a PDF attached to email.

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Invoices 3 min read

What Is an Invoice Number?

An invoice number is a unique identifier assigned to one invoice. It helps the seller, customer, payment system, and accountant refer to the same document without relying on date or amount alone.

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Invoices 3 min read

How to Create an Invoice

To create an invoice, identify the transaction, assign a unique number, enter both parties, itemize approved work, calculate the amount, state payment terms, review, and preserve the final version.

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Invoices 3 min read

What Is a Pro Forma Invoice?

A pro forma invoice is a preliminary document that outlines a proposed transaction before the final sale or shipment. It helps the buyer review expected goods, prices, and terms.

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Invoices 3 min read

What Is an Invoice?

An invoice is a commercial document from a seller or service provider that itemizes a transaction and requests or records payment from a customer.

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Invoices 4 min read

How Does Progress Billing Work?

Progress billing requests payment for the portion of a construction contract earned during a billing period. The calculation starts with approved work and stored materials to date, subtracts retainage and previous payments, and produces the current amount requested.

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Invoices 4 min read

How Does Construction Retainage Work?

Construction retainage is an agreed portion of earned payment held back until specified performance or completion conditions are met. It must be calculated from the correct base, shown separately, and released under the contract and applicable law.

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Invoices 4 min read

What Is a Payment Application?

A construction payment application is a documented request for periodic payment under a contract. It summarizes the adjusted contract, work and eligible materials earned to date, retainage, previous payments, current amount requested, and remaining balance.

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