Government invoices need contract-level detail and clean substantiation. Everhour keeps billable time organized before billing starts.
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A government invoice is usually a payment request tied to a contract, purchase order, grant, delivery, or approved service period. Your goal is to give the billing office enough detail to match the invoice to the obligation, confirm acceptance, and route payment without returning the document for correction.
For U.S. federal vendor payments, a proper invoice generally includes the vendor name, invoice date, contract or authorization number, vendor invoice identifier, descriptions, quantities, prices, shipping and payment terms, contact information, and required substantiation. TIN and banking details belong on the invoice when agency procedures require them.
Government billing often fails because the invoice describes the work but does not identify the buying instrument clearly enough. Add the contract number, order number, line item number, period of performance, agency contact, and remittance details in visible fields, especially when one agency office ordered the work and another office processes payment.
For a time-and-materials services invoice, a clear line might read: "Project management support, Contract 47QRAA26D0001, Order 0003, CLIN 0001, March 1-15, 2026, 42 hours at $95.00." That structure connects the service, rate, date range, and contract line before the reviewer opens backup files.
U.S. businesses do not follow one federal private-sector invoice format or a national VAT/GST invoice regime. Sales and use tax treatment depends on state and local rules, nexus, product or service taxability, and the place of sale. A state seller permit or sales-tax account applies where required, not a U.S. VAT/GST registration number.
Federal contracts are different because FAR and Prompt Payment rules define the payment request more tightly. The ordinary federal payment due date is the later of 30 calendar days after the designated billing office receives a proper invoice or 30 calendar days after government acceptance, unless a contract clause or special rule sets another date.
A one-off invoice app is enough when you need to create a single clean bill from known contract data, approved hours, fixed prices, or reimbursable costs. It works for a simple PO invoice, a grant billing request, or a completed service period where all supporting detail already exists.
A managed workflow fits recurring government work better. Everhour supports billable and non-billable time through project billing status, task-level non-billable controls, custom task rates, member-rate exceptions, and admin reports for billable time, non-billable time, billable amount, and cost before invoice preparation.
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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Contract references matter as much as the amount due. Include the vendor name, invoice date and number, contract or authorization number, order number, line item number where applicable, service or delivery description, quantity, unit price, extended price, payment terms, remittance details, contact information, and required substantiation.
The United States does not use a national VAT or GST invoice regime. Sales and use tax is imposed by states and local jurisdictions. A government vendor should apply tax only when the sale is taxable under the applicable state or local rule and the contract or purchasing process allows that charge.
A federal billing office must return an improper invoice with reasons within 7 days after receipt, with shorter windows for certain food products. Common causes include missing contract references, missing line item numbers, unsupported charges, incorrect billing office details, missing required TIN or banking information, and amounts that do not match the contract.
The ordinary federal payment due date is the later of 30 calendar days after the designated billing office receives a proper invoice or 30 calendar days after government acceptance. Special payment rules and contract clauses can set different timing, so the contract controls the invoice due date.
Federal procurements commonly use electronic invoicing systems, and Treasury's Invoice Processing Platform is used by many agencies and vendors. IPP enrollment is agency initiated. Once enrolled, vendors can view purchase orders, submit invoices, access payment information, and maintain the SAM registration data required for federal vendor work.
Everhour lets admins set project billing status, mark specific tasks as non-billable, use custom task rates, and apply member-rate exceptions. Admin reports can show billable time, non-billable time, billable amount, and cost, so invoiceable contract work stays separate from internal administration.
Everhour Billing & Invoicing turns tracked billable time and expenses into client invoices, calculates invoice amounts from rates, and excludes non-billable work. Invoice line items can be grouped by project, task, person, date, or other available breakdowns to match the billing detail a contract reviewer expects.
Track contract work before invoice day. Everhour separates billable and non-billable time, applies project and task rates, and gives admins reports that support cleaner government billing.
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