Everhour keeps billable work organized, while simple invoicing software helps you turn clean records into client-ready invoices.
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Simple invoicing software is for turning a billable job into a document a client can review, approve, and pay. The immediate job is practical: add seller and buyer details, assign an invoice number, list the work, set dates and payment terms, apply the correct tax treatment, and produce a clean invoice for sending or downloading.
This page fits routine United States business invoicing where the invoice supports business records and client billing. Private-sector businesses do not follow one prescribed federal invoice form or a national VAT/GST invoice regime. Invoices still matter because they support income records, payment follow-up, contract terms, and tax documentation when a sale is taxable under state or local rules.
A complete invoice identifies the seller, buyer, invoice date, due date, invoice number, line items, subtotal, tax line when applicable, total amount due, payment terms, and remit-to details. Line items should show the service or product, quantity, rate, and amount. A consulting invoice, for example, can list `Project management, 10 hours × $125 = $1,250`.
The invoice number should be unique and sequential enough for records and client follow-up. Payment terms should state the due date or timing, such as due on receipt or net 30. An invoice is different from a receipt, estimate, or quote. An invoice requests payment, a receipt proves payment received, and an estimate or quote describes pricing before work begins.
Simple software should reduce entry work without hiding decisions that affect the invoice. Sales tax is the common trap. The United States has no single national sales-tax rate, and sales and use tax depend on state and local rules, nexus, the product or service sold, and where the customer receives the goods or services.
A simple invoice should leave room for a tax line without forcing a flat default. Washington, for example, has a 6.5% state sales-tax portion plus a local portion that varies by city or county. Service taxability also varies. California generally taxes retail sales of tangible personal property and only some service or labor charges, while Texas defines 16 broad categories of taxable services.
A one-off tool is enough when you need a quick invoice for a small job, a single client, or a clean PDF after you already know the billable amount. It works best when the work is complete, the terms are settled, and you only need to format the invoice correctly.
A managed workflow becomes necessary when invoices depend on tracked billable time, project rates, non-billable work, expenses, approvals, and repeat clients. Everhour can support that shift by separating billable and non-billable time, applying project or task rates, and keeping billing reports tied to the work before the invoice is created.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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Simple invoicing software should include seller and buyer details, invoice number, issue date, due date, line items, subtotal, tax line when applicable, total due, payment terms, and remittance details. The software should also let you download or send the finished invoice without rebuilding the same fields each time.
A United States invoice does not need a federal VAT or GST number because the United States does not use a national VAT or GST invoice regime. Sellers that make taxable sales may need state-level sales-tax registration, such as a seller's permit or sales-tax account, depending on the state and activity.
Automatic tax entry is useful only when the software has the correct state and local tax context. Sales tax depends on jurisdiction, product or service taxability, nexus, and the place of sale. A simple invoice should let you add the correct tax line and avoid treating every sale as taxable at one flat rate.
An invoice is a request for payment, while a receipt confirms payment received. Sending an invoice before payment keeps the amount due, terms, and line items clear. Issuing a receipt after payment gives the buyer proof that the charge was paid.
Federal contract invoices follow stricter rules than ordinary private-sector invoices. FAR 32.905 defines a proper invoice with fields such as contractor name and address, invoice date and number, contract or order references, line-item details, terms, payee information, contact details, and TIN or EFT data when agency procedures require them.
Everhour lets admins set project billing status, mark specific tasks as non-billable, apply custom task rates, and use member-rate exceptions. Reports can separate billable time, non-billable time, billable amount, and cost, so invoice totals come from controlled billing data instead of manual sorting.
Everhour Billing & Invoicing uses uninvoiced billable time and expenses to generate client invoices. Invoice data can be grouped by project, task, person, date, or another available breakdown, and exported to QuickBooks Online, Xero, or FreshBooks as a draft.
Track billable and non-billable work before billing starts. Everhour keeps project time, task rates, and billing reports connected, giving every invoice a clearer source of truth.
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