Payroll Funding Controls: Securing Checks, ACH Totals, and Audit Trails

Establishing Internal Controls for Payroll Funding

Payroll is the largest expense for most B2B entities. Without rigorous funding controls, organizations are vulnerable to duplicate payments, ACH fraud, and reconciliation gaps. Effective control starts with the separation of duties between the individual who calculates the payroll and the individual who authorizes the funding transfer.

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Managing ACH Payroll Totals

ACH (Automated Clearing House) transactions are efficient but require strict oversight. To secure ACH payroll totals, implement the following protocols:

• Pre-Funding Verification: Compare the total net pay from your payroll register against the ACH file total before transmission. Discrepancies often indicate manual overrides or unrecorded deductions.
• ACH Positive Pay: Utilize your bank’s ACH Positive Pay service to whitelist your payroll provider’s Originator ID, preventing unauthorized debits from your funding account.
• Batch Totals: Always verify the number of transactions in the batch. A mismatch between the employee count and the ACH transaction count is a red flag for ghost employees or double-processing.

The Payroll Check Audit Trail

Even in a digital-first environment, physical checks or manual entries require a robust payroll check audit trail. A defensible audit trail must document the lifecycle of every payment instrument.

Sequential Integrity

Maintain a strict log of check numbers. Any break in the sequence must be accounted for in the general ledger. This prevents the unauthorized issuance of checks that bypass the payroll software.

Voiding Payroll Checks

When a check is damaged or issued in error, the voiding process must be formal:

1. Physical Defacement: Mark the physical check as "VOID" and retain it for your records.
2. System Reversal: Record the void in your payroll system to reverse the tax liabilities and net pay accruals.
3. Stop Payment: If the check is lost, issue a formal stop-payment order with the bank before reissuing funds.

Audit Trail Requirements for Compliance

To survive a DOL or IRS audit, your records must link the funding source to the end recipient. Your audit trail should include:

• Timestamped Logs: Records of who approved the payroll and when.
• Change Reports: Documentation of any changes made to employee bank accounts or pay rates between pay cycles.
• Bank Reconciliation: Monthly reconciliation of the payroll clearing account to ensure all ACH debits and checks match the processed payroll totals.

By implementing these granular controls, you mitigate the risk of liquidity shortfalls and ensure that every dollar leaving the corporate treasury is accounted for and compliant.