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Home » Three layers of defense

Three layers of defense

Summary of articles about the "Three layers of defense" cost management model ©​

  • News
Can charitable donations be included as expenses? Checklist to avoid being disallowed during final accounting.

January 19, 2026

Can charitable donations be included as expenses? Checklist to avoid being disallowed during final accounting.

In practice, during tax settlement, charitable donations are one of the expenses that are most easily disallowed, even if the business spends the money...

What are warehousing costs?

January 19, 2026

What are warehousing costs and why do businesses "burn money" in inventory without realizing it?

Many businesses only begin to question the cost of warehousing when profits decline and cash flow becomes strained...

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...

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