An Authorization for Expenditure (AFE) is the pre-approved budget estimate for a well or project, and a Joint Interest Billing (JIB) is the post-operation invoice that allocates actual costs to each working interest owner. The AFE sets expectations and authorizes spend before work starts; the JIB records what actually happened and triggers payment. Sound practice reconciles every JIB back to its AFE using COPAS and joint operating agreement (JOA) rules, with exceptions documented inside the allowed adjustment window.
TL;DR:
- Require each AFE to break costs into phases, support major lines with vendor quotes or historical rates, justify contingency, and define supplement triggers.
- COPAS model procedures generally make JIB amounts due within 30 days, with late payment potentially triggering interest and reimbursement of collection costs.
- Match every JIB line to its AFE category and service code, then request invoices, field tickets, change orders, or supplemental approvals for unexplained items.
- Log each JIB’s rendered date on receipt and file specific written exceptions within 24 months of rendering; general objections do not preserve adjustment rights.
- When an electronic summary billing lacks enough service code detail, request the operator’s supporting schedule before accepting charges as verifiable.
Table of Contents
- What an Authorization for Expenditure (AFE) is and how it’s structured
- What a Joint Interest Billing (JIB) statement is and how charges are allocated
- How AFE and JIB relate: process timeline from authorization through billing
- Actionable reconciliation: step-by-step review of AFE vs JIB variances
- COPAS, JOA requirements, and the 24-month adjustment period
- Practical AFE and JIB checklist and templates for month-end and project closeout
- Making reconciliation an ongoing control, not a year-end scramble
- Fieldvest: an adjacent resource for investors evaluating project disclosures
- FAQ
- Sources
What an Authorization for Expenditure (AFE) is and how it’s structured
An AFE is a budget document that an operator circulates to working interest owners before drilling, completing, or significantly modifying a well. It exists to get consent and capital commitment before money moves, and it typically breaks costs into phases such as site preparation, drilling, completion, and facilities, with a contingency line layered on top of the major cost categories.
The operator prepares the AFE, since it holds the contractual authority to conduct operations under the JOA, and non-operators vote or sign off according to thresholds written into that agreement. Approval rules vary by contract, but most JOAs require sign-off once a project crosses a dollar threshold, and some allow a working interest owner to reject participation (a “non-consent” election) at that stage.
When actual scope changes mid-project, operators issue supplemental AFEs rather than rewriting the original one. Authorization for expenditure controls commonly include approval matrices, vendor quote documentation, and defined thresholds for when a supplement is required rather than optional.
A well-structured AFE usually includes:
- A phase or milestone cost breakdown rather than a single lump sum.
- A contingency percentage with a stated justification, not a flat guess.
- Vendor quotes or historical unit-rate references supporting each major line.
- A defined threshold for triggering a supplemental AFE.
- An AFE number that will later appear on every related JIB.
Once approved, the AFE feeds the operator’s accounting and ERP systems as the baseline against which every future invoice gets measured. Our focus here is accuracy at this stage, because every downstream JIB inherits whatever assumptions the AFE got wrong.
What a Joint Interest Billing (JIB) statement is and how charges are allocated
A JIB is the periodic statement an operator sends to each working interest owner, itemizing actual joint account costs for a given month. Under COPAS accounting procedures, operators generally bill non-operators by the last day of the month for the prior month’s joint account charges, keeping the cadence predictable for accounting teams on both sides.
A compliant JIB references the governing AFE number, identifies the lease or facility, and classifies costs so a non-operator can match them to budget categories. MFI-26 documents the standard classification scheme, including service codes that separate controllable operating costs from non-controllable ones like regulatory fees or third-party transportation charges.
Key elements accountants should expect on every JIB:
- The governing AFE number tied to the charges billed.
- Lease, well, or facility identification matching the AFE.
- Cost classification by service code (controllable vs. non-controllable).
- The working interest percentage applied to each cost category.
- A stated due date consistent with the governing accounting procedure.
Payment terms matter beyond cash flow timing. Under the model form procedure, amounts are generally due within 30 days, and late payment can trigger interest charges and reimbursement of the operator’s collection costs, so treating JIB review as a low-priority task carries a real financial penalty.
How AFE and JIB relate: process timeline from authorization through billing
The relationship between an AFE and its JIBs follows a predictable sequence, and most disputes trace back to a break somewhere in that chain rather than to bad faith on either side.
- The operator drafts and circulates the AFE, non-operators review and approve or elect non-consent, and the project gets authorized capital.
- Field work begins: drilling, completion, or facility construction generates vendor invoices and field tickets as costs accrue in real time.
- The operator compiles those source documents into the monthly joint account and classifies each charge by service code.
- A JIB is generated and distributed, referencing the AFE and showing each owner’s allocated share.
- Non-operators reconcile the JIB against the AFE, request supporting documentation where needed, and either pay or raise a specific exception.
Variance between the original estimate and the final bill is normal, and the usual drivers are scope changes, weather delays, extra mobilization and demobilization trips, or scope that simply got left out of the original estimate. None of these automatically signal a problem; they signal a need for documentation.
Larger or more complex projects often arrive with summary billings exchanged electronically through JIBE/EDI standards, which carry a standardized chart of service codes. When a summary billing lacks enough classification detail, the operator is expected to supply supporting schedules so the non-operator can actually verify the charges rather than take them on faith.
When actual costs are going to exceed the original authorization by a meaningful margin, the operator should issue a supplemental AFE before the overage shows up unexplained on a JIB. The supplement becomes the new baseline for every subsequent billing cycle tied to that well or facility, which is why tracking supplement history matters as much as tracking the original AFE.
Actionable reconciliation: step-by-step review of AFE vs JIB variances
A repeatable reconciliation procedure turns JIB review from a monthly scramble into a controlled process that produces an audit-ready trail.
- Map every JIB line item to its corresponding AFE category and service code, flagging anything that does not have an obvious match.
- Request supporting documents for unmatched or unusually large items: field tickets, vendor invoices, change orders, or the supplemental AFE that should have accompanied the overage.
- Classify each variance as one of three things: a justified scope change, a coding or allocation error, or a timing issue such as a late-billed invoice or an omitted cost.
- Record unresolved items as “to be determined” rather than letting them lapse, and retain the full supporting file, since the 24-month adjustment period only protects exceptions that were raised specifically and in writing.
Case-study guidance from COPAS underscores that operators should provide enough classified detail on summary billings for non-operators to reconcile without guesswork, which means a non-operator requesting a supporting schedule is exercising a normal right, not creating friction.
Pro Tip: Log the “rendered” date on every JIB the day it arrives, since that date, not the payment date, starts the clock on your adjustment window.
Build this into a monthly cycle rather than a year-end cleanup. A JIB that sits unreviewed for eighteen months leaves little room to gather documentation before the adjustment period closes, and operators are under no obligation to reopen a bill once that window has passed without a timely exception on file.
COPAS, JOA requirements, and the 24-month adjustment period
COPAS model form accounting procedures are the industry’s reference point for what counts as an allowable charge and how it should be classified on a bill. MF-8 sets billing cadence and content requirements, while MFI-26 standardizes the service codes operators use to classify costs on JIBs and summary billings.
Most JOAs layer additional requirements on top of COPAS, typically requiring that AFEs and JIBs share consistent well or facility identification and that cost classifications stay consistent from the AFE stage through final billing. That consistency is what makes reconciliation possible in the first place.
The 24-month adjustment period is the window during which a non-operator can raise a specific written exception to a billed charge; after MFI-40’s 24-month period expires, charges are presumed correct absent a timely exception. The clock starts from when a bill was “rendered,” not from the underlying work date, so tracking rendered dates accurately is a control in itself.
Practical steps that protect adjustment rights:
- Log the rendered date on every JIB immediately upon receipt.
- File specific written exceptions rather than general complaints, since vague objections do not preserve rights the same way.
- Keep supplemental AFEs and change orders filed alongside the JIBs they affect.
- Review older JIBs on a rolling basis so nothing ages past the window unnoticed.
Practical AFE and JIB checklist and templates for month-end and project closeout
A short, consistent checklist at both ends of a project catches more errors than any single year-end audit.
Before work starts, a 15 to 30 day pre-start review should confirm approvals are on file, vendor quotes support the major cost lines, and any contingency percentage has a stated rationale rather than a round number pulled from habit. Our AFE checklist for oil and gas investors walks through this pre-start sequence in more detail.
At month-end, JIB review should include:
- Matching each billed line to its AFE category and service code.
- Verifying service code classification against MFI-26 guidance.
- Flagging any charge with no clear AFE reference or no supporting schedule.
- Reconciling prepayments and advances against actual billed amounts.
- Confirming the rendered date is logged for adjustment-period tracking.
Retain supporting documentation for at least the full 24-month adjustment window, and when a summary billing arrives through EDI with thin classification detail, request the supporting schedule rather than accepting the summary at face value.
Pro Tip: Keep a running log of “TBD” exceptions with the date raised and the document requested, so an unresolved item never quietly ages out of the adjustment window.
When a variance can’t be resolved at the staff level, escalate it in writing to the operator’s joint interest accounting contact with the specific AFE and JIB references attached, not a general inquiry.
Making reconciliation an ongoing control, not a year-end scramble
Most AFE to JIB overruns trace back to the same handful of causes: thin contingency justification, missed supplemental AFEs, and classification drift between what the AFE assumed and what the field actually billed. None of those require more accounting staff to fix, just earlier reviews.
Integrated templates, a shared vendor-rate reference, and a cross-functional check between operations and accounting before an AFE goes out catch most of these issues before they ever reach a JIB. For investors, the payoff is a cleaner audit trail and fewer surprises at distribution time, which is ultimately what transparency in this business comes down to.
— Sharif
Fieldvest: an adjacent resource for investors evaluating project disclosures
Accounting teams reconcile AFEs against JIBs after capital is already committed. Investors evaluating a project need that same clarity earlier, before committing capital at all, and that is the gap we built our marketplace to close. On Fieldvest, vetted U.S. energy projects come with budget summaries and disclosure materials presented in a format investors can actually compare across deals, rather than parsed from an operator’s raw AFE paperwork.
Our resources include an AFE checklist for investors, a tax deduction guide, and a free tax deduction calculator for modeling first-year write-offs.
We are an investment marketplace, not an accounting platform: our tools help you evaluate a project’s economics before you commit, while JIB reconciliation remains a job for your accounting team once you are in. If you want to see current vetted opportunities, browse available projects on Fieldvest.
FAQ
What is an AFE in procurement?
In oil and gas, an Authorization for Expenditure is a pre-approval budget document that estimates costs for a well or project and secures consent from working interest owners before operations begin. It is not a procurement purchase order in the general business sense; it is the joint-account mechanism that authorizes capital deployment under a JOA.
What does JIB mean in oil and gas?
JIB stands for Joint Interest Billing, the periodic invoice an operator sends to non-operating working interest owners detailing actual costs allocated by ownership percentage. It is the post-operation counterpart to the pre-approval AFE.
What is an AFE expense?
An AFE expense is any cost category included in the original budget estimate, such as drilling, completion, or facilities work, broken into phases with a contingency allowance. Once work is performed, those estimated categories become the basis for classifying actual charges on the resulting JIB.
What are JIB payments?
JIB payments are the amounts non-operators owe based on their working interest share of actual joint account costs billed each period. Under COPAS model form procedures, payment is generally due within 30 days of billing, and late payment can trigger interest and collection cost reimbursement.
How long do I have to dispute a JIB charge?
Specific written exceptions to a billed charge generally must be raised within the 24-month adjustment period measured from the end of the calendar year in which the bill was rendered. After that window closes, charges are presumed correct absent a timely exception on file.
Sources
- Joint interest billing and how it relates to oil and gas accounting | COPAS
- PwC — Authorization for Expenditure controls (practical guidance)
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