Month-end close checklists, reconciliations and workpapers

Records of how finance teams close the books each month: close checklists, account reconciliations with supporting detail, journal entries and reviewer sign-offs. Labs use them to train agents for close and reconciliation work, where the steps and review standards matter as much as the numbers.

Last updated October 3, 2026

What a record contains

One close period: the checklist with owners and due dates, reconciliations per account with explanations of differences, journal entries with support, and review notes.

FieldWhat it holds
periodMonth being closed
checklist[]Task, owner role, due date, completed date
reconciliations[]Account, balances, difference, explanation, review status
journal_entries[]Lines, memo and supporting document
review_notes[]Reviewer questions and responses
Illustrative record. The values are made up to show the shape of the data.
{
  "period": "2024-06",
  "reconciliations": [
    {"account": "1210 Accounts receivable", "gl_balance": 412880.15,
     "subledger_balance": 410905.15, "difference": 1975.00,
     "explanation": "Customer prepayment posted to AR, reclass in JE-0612",
     "review_status": "approved"}
  ],
  "review_notes": [{"by": "controller_role", "note": "Attach the remittance for the reclass."}]
}

How AI labs use it

Reconciliation agents
Real differences with the explanations teams wrote.
Review support
Reviewer notes show what gets questioned.
Evaluation
Check a model’s reconciliation against the signed-off one.

Typical preparation requirements

Agreed with the supplier before any work begins. Typical requirements include:

  • Bank account numbers and personal data removed
  • Payroll and compensation details excluded
  • Amounts consistently scaled where needed, so reconciliations still balance

Every dataset has a documented owner and confirmed licensing rights. See data governance on sourcex.si.

What makes a strong package

  • Several years of consecutive periods
  • Written explanations for differences
  • Reviewer sign-offs

Compared with public datasets

Public sets such as SEC EDGAR filings and FinQA are useful references, but limited as enterprise training data. The finance and accounting category page compares them with licensed data.

Who typically holds it

  • Mid-sized companies
  • Private-equity-backed businesses
  • Outsourced accounting firms, with clients’ permission

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Questions

Can amounts be disguised?

Amounts can be scaled consistently so the work still reconciles. Scaling can be reversed if any true amount is known, so sensitive figures may need further masking.

Need this data for a model?

Describe what you need: domain, volume, history, format and licensing terms. SourceX looks for companies that hold it and can license it.