What is Cost of Poor Quality (COPQ)?

Cost of Poor Quality (COPQ) is every dollar a company spends because something was not done right the first time — rework, scrap, customer returns, complaints, re-inspection, and quality audits. Research shows COPQ typically represents 5% to 30% of annual revenue, making it one of the largest hidden costs in any business.

How is Cost of Poor Quality calculated?

COPQ is calculated by summing four cost categories: internal failures (rework, scrap, re-inspection), external failures (customer returns, complaints, contractual penalties), appraisal costs (inspections, audits), and prevention costs (training, documentation, quality meetings). This free calculator guides you through each category in 5 minutes.

What percentage of annual revenue does COPQ typically represent?

According to quality management research, COPQ represents 5% to 30% of annual revenue. Manufacturing companies average 15–25%, while service businesses range from 5–15%. Companies with mature ISO 9001 systems typically achieve COPQ below 5%. Most organizations measuring COPQ for the first time discover it is significantly higher than expected.

What are the four categories of Cost of Poor Quality?

COPQ has four ISO 9001-defined categories: (1) Internal Failures — rework, scrap, and re-inspection before the customer receives the product; (2) External Failures — returns, complaints, and penalties after delivery; (3) Appraisal — inspection and audit costs; (4) Prevention — training, documentation, and quality planning.

How can I reduce my Cost of Poor Quality?

To reduce COPQ: first measure it to identify your highest-cost categories. Then implement documented process controls to cut internal failures, build systematic customer feedback to address external failures faster, and increase prevention investments in training and documentation. ISO 9001 quality management systems are specifically designed to reduce COPQ over time.

What is the difference between COPQ and COQ (Cost of Quality)?

Cost of Quality (COQ) covers all quality-related spending, including both the Cost of Poor Quality (COPQ) and the Cost of Good Quality (prevention and appraisal). COPQ refers specifically to failure costs — what you lose due to defects and errors. The formula is: COQ = COPQ (failures) + Prevention + Appraisal costs.

How long does it take to complete this COPQ calculator?

This free COPQ calculator takes approximately 5 minutes. You answer questions across 5 categories: general business data, internal failures, external failures, appraisal costs, and prevention costs. At the end you receive a personalized PDF report with your estimated annual COPQ, a breakdown by category, and 3 industry-specific improvement recommendations.

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Cost of Poor Quality Calculator — ISO 9001

Data

Internal
Failures

External
Failures

Appraisal

Prevention

Step 1 of 5 — General Data

Step 1 — General Data

These inputs calibrate your results against real industry benchmarks.

Industry * This field is required.

Number of employees * This field is required.

Approximate annual revenue * This field is required.

Average monthly salary per employee (USD) * This field is required.

Step 2 — Internal Failures

Defects caught before reaching the customer: rework, scrap, and re-inspection.

% of products/services requiring rework (0–100) * Percentage that doesn't come out right the first time. This field is required.

Weekly hours spent on rework * Total team hours per week fixing failures. This field is required.

% of wasted material (scrap) over monthly production cost (0–100) * Materials or inputs that are discarded. This field is required.

Weekly hours of re-inspection after corrections * Re-verifying products already corrected. This field is required.

Step 3 — External Failures

Defects that reach the customer: returns, complaints, and penalties.

Number of customer returns or rejections per month * This field is required.

Average cost per return in USD (time + logistics + replacement) * This field is required.

Number of formal customer complaints per month * This field is required.

Monthly hours spent handling complaints * This field is required.

Average annual contractual penalties in USD (0 if none) * This field is required.

Step 4 — Appraisal

Costs of verifying quality: inspections and audits.

Number of quality inspections per month * This field is required.

Average hours per inspection * This field is required.

Internal audits per year * This field is required.

Hours per audit (preparation + execution) * This field is required.

Step 5 — Prevention

Investment in preventing failures: training, document control, and quality meetings.

Quality training hours per year * This field is required.

Monthly hours for QMS document control * This field is required.

Monthly hours in quality meetings * This field is required.

Estimated annual cost of poor quality

0% % of annual revenue

…

The full breakdown and 3 industry-specific recommendations are in your personalized report.

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Enter your details to see the detailed breakdown and recommendations for your company.

First Name * This field is required.

Last Name * This field is required.

Business email * Please use a business email (no Gmail, Hotmail, etc.).

Company * This field is required.

Industry * This field is required.

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What is Cost of Poor Quality?

Everything your company spends because things were not done right the first time: rework, returns, scrap, inspections, and more.

Cost of Poor Quality (COPQ) is the total financial cost a business incurs when products or services fail to meet quality standards. It encompasses internal failures (rework, scrap), external failures (returns, warranty claims), appraisal activities (inspections, testing), and prevention efforts. Industry research shows COPQ represents 5–30% of annual revenue for most companies.

What is COPQ?

All costs incurred from not doing things right the first time: rework, returns, scrap, re-inspection, and more.

Why measure it?

Without data, you cannot prioritize. Knowing your COPQ gives clarity on where to invest to reduce real losses immediately.

What to do with the result?

Justify quality investments, identify bottlenecks, and build an evidence-based improvement plan.

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Cost of Poor Quality Calculator

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Your Cost of Poor Quality Report

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