Financial ratios & operating efficiency · Core

Defect rate

Also called: quality failure rate, failure rate

ELI5

Defective units divided by inspected or produced units.

Used in conversation

“The number is useful only if everyone calculates defect rate the same way.”

Pitch context

You will see “Defect rate” in financial models, budgets, board packs and investor materials when the discussion reaches financial ratios & operating efficiency.

Why it matters: In financial ratios & operating efficiency, different calculation boundaries, periods or accounting treatments can change the number and the decision.

Caution

Calculation, recognition and disclosure can vary by accounting framework, company policy and reporting context.

Sources & evidence · 7

Direct term-level sources and supporting source families.

IFRS Foundation — IFRS GlossaryDirect source · primary · checked 2026-08-16
U.S. Bureau of Labor Statistics — Productivity programmeDirect source · primary · checked 2026-08-16
Financial Accounting Standards Board — FASB Accounting Standards CodificationSupporting source family · primary · checked 2026-08-16
U.S. Small Business Administration — Break-even pointSupporting source family · primary · checked 2026-08-16
U.S. Securities and Exchange Commission — Non-GAAP Financial Measures — Compliance and Disclosure InterpretationsSupporting source family · primary · checked 2026-08-16
U.S. Acquisition.gov — Federal Acquisition Regulation Part 15 — Contracting by NegotiationSupporting source family · primary · checked 2026-08-16
UK Government — Groceries Supply Code of PracticeSupporting source family · primary · checked 2026-08-16