Tax provision model and valuation allowance working papers — "Audit disputes regarding positive and negative evidence for tax asset realizability"
Why the manual spreadsheet breaks financial controls and how a deterministic workflow replaces it.
Deferred tax assets are judged realizable in a quarterly provision workbook whose positive and negative evidence is pasted from prior-year memos and forecasts that are not linked to the attribute schedules.
Auditors dispute the valuation allowance because the working papers cannot show which facts supported the conclusion in the period, so the allowance is adjusted after fieldwork.
ASC 740 tax-attribute engine that stores each piece of positive and negative evidence against the DTA schedule and versions the allowance conclusion per period.
Realizability assertion: the valuation allowance cannot post unless every DTA balance cites contemporaneous evidence records whose conclusion matches the booked allowance.
Three-stage comparison between manual workbook reconciliation and automated rule-based execution.
ASC 740 evidence copied from last year into a provision workbook.
The booked allowance cannot be tied to contemporaneous facts for the period.
Each DTA balance carries the evidence and conclusion version for the period.
A valuation allowance cannot post without contemporaneous evidence that matches the booked amount.
Adjacent spreadsheet failure modes in the same APQC Category 9 process group.
State tax filing schedule and multi-jurisdiction gross sales sheet
Customer tax exemption certificate folder and billing override sheet
Engineering payroll allocation sheet and contractor tax credit study
Scope the replacement architecture for manual calculation of quarterly deferred tax asset valuation allowances or combine multiple failure modes in the directory.
