LidLog
Estimate vs. invoice: what belongs in each document?
An estimate describes proposed work and the assumptions behind its price. An invoice states the charges you are asking the customer to pay. Keeping those purposes clear makes both documents easier to review.
Make the estimate explain the scope
List the work by activity or deliverable. Include quantities, units and rates where they help the customer understand the total. State exclusions and assumptions, such as materials supplied by the customer or access required for the work. Avoid an unexplained “miscellaneous” line when you can describe the item.
Make the invoice traceable
Use a distinct invoice number and identify the customer, project and relevant date. Describe the billed work clearly enough to connect it to the estimate or project record. If the scope changed, reference the agreed change in the notes. Do not imply that issuing an invoice records a payment.
Check the arithmetic and the wording
Review quantities, unit prices, discounts and any applicable tax entry. A correct total can still describe the wrong scope. Confirm the recipient details and payment information before sharing the document. Decide your own commercial terms; the generator is a document tool.
Use the matching LidLog tool
Start proposed work in the Estimate Generator and billing documents in the Invoice Generator. Both let you add your own company details. The public generators are separate documents: carry the agreed scope into the invoice and check it rather than assuming an automatic estimate-to-invoice conversion.
Review checklist
- Correct document type and number
- Clear customer and project details
- Descriptive line items
- Reviewed totals and adjustments
- Notes that match the agreed work