1099 Year-End Close Checklist for Accounts Payable

Start with the legal payer entities, accounting systems, payment platforms and business units that can create reportable payments. Include manual checks, separately managed legal or property payments and acquired records where relevant. The vendor master alone does not prove the payment population is complete.

For each source, document the period covered, extraction owner, paid-date basis and known exclusions. Identify intercompany or duplicate imports so they are reviewed before aggregation. Preserve the original extract rather than overwriting it during cleanup. The close process needs to explain how a payment moved from its source into a reviewed form population, including why excluded payments were excluded.

Assign proposed form types and payment categories using the current specific instructions. Publication 1099 provides the general framework, but this close checklist does not determine every payment's substantive tax treatment. Route disputed classification, exemptions and unusual payees to the appropriate reviewer.

Keep payment-card and third-party-network transactions identifiable so the team can apply the relevant reporting instructions without duplicating amounts automatically. Keep foreign-payee cases distinguishable from ordinary W-9 cases. A hurried rule such as 'all suppliers over last year's threshold receive NEC' can produce errors when reporting requirements or form-year thresholds change.

This fictional plan works backward from the earliest verified obligation in a mixed-form season. Its weeks are internal planning intervals, not statutory extensions. The employer should choose actual dates after verifying form-specific recipient, IRS and state deadlines.

Move a dependency earlier when it repeatedly causes delays. Do not simply shorten every review task to recover lost time.

For each recipient, establish the reportable name, taxpayer identification number, address and any applicable certification from the appropriate documentation. A missing PDF does not necessarily mean the payer never obtained the TIN, while a populated vendor field does not prove the information is reliable.

Use the W-9 requester instructions and Publication 1586 when handling missing or incorrect TIN information. Record initial and subsequent solicitation history where required. Assign a separate backup-withholding review when applicable. Supplier outreach is a task in the close schedule; it does not by itself extend the information-return deadline or establish reasonable-cause relief.

Check that outreach responses update the approved reporting source, not only a staff member's inbox. Otherwise the supplier can provide correct information while an older export still reaches the filing provider. Record the version in which the response was incorporated.

Build a bridge from source payments to reportable amounts by payer, recipient and form category. Record supported exclusions, adjustments and duplicate removals separately. Compare counts as well as dollars. Equal grand totals can conceal a payment moved between two recipients or an omitted supplier offset by a duplicate.

For a fictional example, a reviewed population begins with 210 supplier records, removes 12 duplicate source rows and adds three separately managed payees, leaving 201 unique recipient records for further reporting review. That count does not mean 201 forms are automatically required. The actual form population depends on the approved payment classification and reporting rules. Keep source-record counts and final return counts as separate controls.

Freeze the approved form data and recipient-delivery list, then send a precise version reference to the filing and furnishing owners. Record provider cutoffs, accepted input formats and who handles errors. Do not let one team use a corrected address list while the other uses an older payer or amount export without an explicit reconciliation.

Retain actual IRS filing evidence and recipient-furnishing evidence under the applicable Publication 1099 rules. Track state obligations independently. If a late change occurs, identify affected forms and channels, issue a new version and determine whether prior work requires a correction or merely a prefiling update. Close the season with unresolved items visible and assigned.