Tax Compliance Auditing
Cynor Systems provides comprehensive tax compliance auditing services for the Illinois Secretary of State. We identify discrepancies, recover lost revenue, and ensure every transaction is properly reported.
ST-556
Tax Returns
Police Books
Inventory Records
Contracts
Finance & Sale
Odometer
Disclosure Statements
What we do
Our field auditors visit dealerships to examine police books, ST-556 tax returns, finance contracts, bills of sale, and odometer disclosures. Every transaction is accounted for.
Proprietary document intelligence captures handwritten and printed data from scanned records with high accuracy, eliminating manual data entry and reducing audit cycle time.
Extracted amounts are automatically cross-referenced against Illinois DOR tax rates by ZIP code and transaction date, surfacing underpayments and calculation errors.
Why Cynor Systems
Automated document capture and data extraction reduce per-dealership audit time by eliminating hours of manual transcription.
Machine extraction removes human transcription errors. Every field is verified against structured schemas before analysis.
Cross-referencing police book records against filed tax returns ensures no transaction goes unaudited. Missing filings are identified automatically.
Systematic rate verification against IL DOR tables by ZIP code and date catches even minor discrepancies that compound across thousands of transactions.
Audit scope
The primary Illinois tax filing for each vehicle sale. We verify seller and buyer information, vehicle details, trade-in credits, tax rate application, and computed tax amounts.
The dealer’s mandatory vehicle inventory ledger. We scan every page — purchased and sold sides — to reconstruct a complete transaction history and cross-reference against filed returns.
Financing terms including cash price, trade-in allowance, amount financed, APR, and payment schedule. Compared against reported sale prices for consistency.
Records the vehicle price, fees, and total balance due for cash transactions. We verify that reported tax amounts match the applicable rate for the buyer’s jurisdiction.
Certifies actual vehicle mileage at time of sale. We cross-reference odometer readings against police book entries and finance contracts for consistency.