Everhour turns tracked billable time and expenses into invoices, while oil and gas billing still needs job-level detail.
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Use this page to prepare an invoice for oilfield services, materials, transportation, maintenance, consulting, or joint-venture support work. The invoice should connect the billed work to the contract, purchase order, field ticket, jobsite, and accounting code the buyer uses. A generic service invoice usually creates extra review because the approver has to chase scope, quantity, price, or coding details.
Oil and gas buyers commonly review invoices through a source-to-pay chain: bid or contract, order, approved field ticket, invoice, and payment. Your invoice should follow that trail. Include the vendor name, invoice number, invoice date, payment terms, remittance details, PO or contract reference, line-item descriptions, quantities, unit prices, extended prices, and any required AFE/WBS or cost-center coding.
A field-ticket-backed invoice works best when each line can be traced to approved work. A sample line might read: "Well pad maintenance, Field Ticket FT-1187, AFE 24-102, cost center OPS-7, 10 hours, $95 per hour." Material lines should show the product or service, quantity, unit of measure, agreed price, and delivery or jobsite reference.
Digital oilfield tickets may capture timestamps, GPS coordinates, geofenced locations, work routes, and hours performed at job sites. Those details support the invoice because they connect the billed amount to proof of work. If the buyer uses coding rules, add the AFE/WBS, cost center, project, or budget allocation on each relevant line instead of burying that detail in notes.
Contract pricing deserves a separate check before sending the invoice. Oil and gas buyers commonly use bids, price books, and price agreements, so a rate that looks reasonable still causes rejection if it does not match the awarded price. Match labor rates, equipment rates, material pricing, mileage, minimum charges, and standby time to the contract or purchase order.
Joint-interest billing adds another layer. For U.S. upstream joint operations, COPAS model accounting procedures can affect pass-through charges, including overhead, employee benefits, material handling, and joint-interest billing treatment. Certain COPAS accounting procedures cap chargeable employee benefit costs at the most recently recommended COPAS percentage, 34% effective January 1, 2026. Base overhead rates are negotiated in the accounting procedure attached to each joint operating agreement.
A free invoice tool is enough for a one-off service invoice, a small contractor billing one operator, or a simple materials-plus-labor job where the PO, field ticket, tax treatment, and payment terms are clear. It gives you a finished document without building a full billing system, which is useful when the invoice volume stays low.
A managed workflow fits recurring oilfield services, multi-crew work, retainers, joint-interest billing support, and jobs where tracked time and billable expenses must become invoice lines. Everhour Billing & Invoicing can convert approved billable time and expenses into invoices, calculate amounts from rates, exclude non-billable tasks, customize client defaults, and export drafts to QuickBooks Online, Xero, or FreshBooks.
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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Private-sector U.S. invoices do not have one prescribed federal invoice form. For federal tax records, businesses may use any recordkeeping system suited to the business if it clearly shows income and expenses, and invoices serve as supporting documents. Federal contracts are different because FAR rules define proper invoice fields for federal procurement.
Field ticket number, PO or contract reference, jobsite, service date, crew or equipment description, quantity, unit rate, extended price, and AFE/WBS or cost-center coding reduce disputes. The buyer can match the invoice to approved work, agreed pricing, and the correct budget bucket without requesting backup after submission.
U.S. sales and use tax depends on state and local rules, nexus, product or service taxability, and where the sale is sourced. The United States does not use a national VAT or GST invoice regime. A seller that makes taxable sales may need state-level sales-tax registration, such as a seller's permit where state law requires one.
Certain U.S. oil and gas joint-operation invoices can be affected by COPAS accounting procedures and economic factors. The employee benefits limitation is 34% effective January 1, 2026. The COPAS overhead adjustment factor is +6.3% effective April 1, 2025, and the loading and unloading rate is $1.12 per hundredweight effective April 1, 2025, under certain model procedures.
Payment method usually comes from policy or contract. United States coins and currency are legal tender for debts, public charges, taxes, and dues, but no federal statute requires private businesses to accept cash for goods or services unless state law says otherwise. State law and the signed agreement control the practical rule.
Everhour Billing & Invoicing turns tracked billable time and expenses into invoices, calculates invoice amounts from rates, and excludes non-billable tasks. Teams can set client defaults for contacts, taxes, discounts, and payment terms, then export invoice drafts to QuickBooks Online, Xero, or FreshBooks.
Everhour reporting shows billable time, non-billable time, billable amount, cost, project, client, member, and task details in configurable reports. Teams can filter, group, and export reports in CSV, Excel/XLSX, or PDF before billing work tied to oil and gas projects.
Track billable work by project, keep non-billable tasks out of client charges, and send invoice drafts to accounting from Everhour for cleaner oil and gas billing.
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