What constitutes a comprehensive end-to-end model check to ensure internal consistency?

• A. Only check the income statement for arithmetic errors.
• B. Only ensure cash equals net income.
• C. Only verify that expenses do not exceed revenues.
• D. Verify balance sheet balances each year, CFO/CFI/CFF reconcile with change in cash, ensure tax and interest are coherent, and that driver linkages hold across statements.

Answer: (D)

Ensuring internal consistency requires checking how all three primary financial statements fit together over time. A comprehensive end-to-end model check makes sure the balance sheet balances each year, the cash flow statement reconciles to the change in cash (CFO, CFI, and CFF add up correctly), and tax and interest are coherent with the underlying income and financing assumptions. It also verifies that the driver linkages—how revenue, expenses, working capital, capital expenditures, debt, and taxes flow through the statements—hold consistently across all statements.

This broad approach matters because misstatements or misalignments can propagate across statements. For example, a higher net income should eventually show up in cash via cash flow adjustments, while tax and interest should reflect the pre-tax income and financing structure. Focusing on a single aspect, like only arithmetic on the income statement or only ensuring cash equals net income, misses these cross-statement and timing connections, allowing errors to slip through.