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Home » Three layers of defense » Layer 2 - Control

Layer 2 – Control

Layer 2 – Control in the “Three Layers of Defense” Cost Management Model ©
Includes activities to establish specific regulations to clarify the separation of powers in approval/adjustment. Monitor violations against regulations

  • News
How to calculate percentage discounts

January 17, 2026

How to calculate discount percentages: Standard formula, how to reconcile purchase orders (POs) and invoices, and budget control for CFOs.

In business, calculating percentage discounts is not just a matter of arithmetic. A single mistake in the base calculation, rounding, or...

What is a fake invoice?

January 15, 2026

What are fraudulent invoices? Risks, penalties, how to identify them, and prevention solutions.

In the context of tax authorities tightening management of electronic invoices, tax refunds, and transaction risk control, invoices...

What is invoice trading?

January 15, 2026

What is invoice trading? Risks, penalties, and how businesses can avoid it.

In recent years, along with the tax authorities' efforts to promote the management of electronic invoices and the application of distribution systems...

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