Everhour supports rate-based billing and invoicing workflows for oil and gas teams that bill by project, member, or task.
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| Description | Qty | Rate | Tax | Amount |
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Oil and gas invoicing usually starts before the invoice. A buyer sources a supplier, compares bids, awards work, issues an order, and expects the invoice to match contract prices or price-book terms. Your finished invoice should give AP the same story in one place: vendor, buyer, invoice number, service period, PO or contract reference, payment terms, and line items that match the approved work.
Field tickets often supply the proof behind oilfield service invoices. A ticket can confirm the work scope, quantity, accounting coding, and price before AP approves payment. Digital tickets may also include timestamps, GPS coordinates, geofenced locations, routes, and hours performed at the job site. Keep those references visible on the invoice so the reviewer can connect billed work to approved field activity.
Oil and gas AP teams review invoices at the summary or line-item level. Each line should identify the product or service, quantity, unit price, extended price, vendor, AFE/WBS code, cost center, and budget allocation when the buyer requires it. A line such as "Flowback technician, Well A-17, 12 hours, AFE 24018, cost center PROD-03" gives accounting a clean trail.
United States private-sector invoices do not follow one prescribed federal invoice form, and the United States does not use a national VAT or GST invoice regime. Sales and use tax depends on state and local rules, nexus, product or service taxability, and the place of sale. Service taxability varies by state and service type, so the tax line should follow the buyer location and the taxable item being billed.
Joint operations add another layer because an invoice may affect partners, working interests, and operator reimbursements. Joint interest billing invoices for non-operated joint ventures may flow through specialized approval systems, while coding and disputes stay in the system of record for the joint venture. The invoice still needs clear line-item detail, partner-facing references, and coding that matches the operating agreement.
COPAS publishes United States oil and gas accounting standards and model form accounting procedures for joint operations. Certain COPAS procedures allow operators to charge actual employee benefit costs to the joint account, capped at the most recently recommended COPAS percentage, 34% effective January 1, 2026. COPAS also publishes an annual overhead adjustment factor, +6.3% effective April 1, 2025, for fixed-rate overhead on drilling and producing wells.
A free invoice works for a single field job, a small vendor invoice, or a simple project with one PO and a few service lines. It falls short when rates change by crew member, project, task, job date, or contract. Oil and gas billing also needs durable records for field tickets, AFE/WBS coding, cost centers, approved time, reimbursable expenses, and accounting handoff.
Everhour fits the managed workflow when billable work starts in tracked time. It separates cost and billable rates, supports per-person defaults and per-project overrides, preserves dated rate history, and prices billable work by project, member, or task. That structure keeps older reports tied to the rates that applied at the time and gives invoice reviewers a cleaner link between labor, cost, revenue, and client billing.
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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An approval-ready oil and gas invoice connects the invoice to the commercial and field record. Include the vendor, buyer, invoice date and number, PO or contract reference, service dates, line items, unit and extended prices, payment terms, AFE/WBS codes, cost centers, and field ticket references. Add sales tax only where state and local rules require it.
AFE or WBS codes belong on the invoice when the buyer uses them for budget control, cost allocation, or project approval. Oil and gas AP workflows commonly analyze invoices by vendor, product or service, AFE/WBS, cost center, and budget allocation. Missing coding often sends the invoice back to operations or accounting before payment can move.
Field tickets should be attached or referenced when they support the billed scope, quantity, coding, or price. Oilfield service invoices commonly rely on approved tickets for jobsite proof. Digital tickets can add timestamps, GPS coordinates, geofenced locations, routes, and hours performed, which helps reviewers match the invoice to approved work.
A United States oil and gas invoice does not need a 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. Sales and use tax depends on state and local rules, nexus, item taxability, and the place of sale.
A mismatch between the invoice, field ticket, PO, and agreed pricing causes avoidable delays. The reviewer needs the same scope, quantity, rate, coding, and service dates across the documents. A missing AFE/WBS code or cost center can also block approval because AP cannot allocate the charge to the right budget.
Everhour separates internal cost rates from client-facing billable rates, so reports can calculate labor cost, revenue, and profit. Teams can set default per-person rates, override rates by project, preserve dated rate history, and price billable work by project, member, or custom task rate.
Everhour Billing & Invoicing turns tracked billable time and expenses into client invoices. Users can select uninvoiced time and expenses, preview the breakdown, group invoice line items by the structure the client expects, and export invoices to QuickBooks Online, Xero, or FreshBooks.
Track approved time, apply the right rate history, and send billable oil and gas work into invoices. Everhour connects rates, reports, and invoicing into one billing workflow.
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