Spreadsheet Failure ModeManual Workflow
Root Operational Bottleneck
Employer tax liabilities from the payroll provider are compared to the general ledger once a quarter in a reconciliation sheet, with state rate changes applied only if someone noticed the notice.
Control Hazard & Audit Exposure
Missed state unemployment rate updates leave the provider withholding at the old rate, so variances accumulate silently until a penalty notice arrives after the filing deadline.
Deterministic Software ReplacementClient-Owned Architecture
Payroll API Clearing Syncer & Tax Variance Audit Pipeline
Payroll API sync that lands each run's tax liabilities in a clearing account, matched to GL postings and to current agency rates, with variances routed for correction before the filing period closes.
Continuous Assertion Rule
Rate assertion: every payroll run's employer tax lines must be computed at the agency rate effective on the check date and match the GL clearing entry to the cent, or the run is flagged before filing.