How do you calculate rework cost?

Multiply the reworked quantity or hours by the rework rate and by the share charged to this lot to get variable cost, then add fixed disposition cost. With 1,800 units at $0.42, full capture, plus $650 fixed, the total is $1,406.

Why is the effective per-piece rate higher than the rate I entered?

Because the $650 fixed disposition cost is spread across the reworked units on top of the variable $0.42. That lifts the effective rate to about $0.78 per piece — the number that should drive your rework-versus-scrap math.

What does the capture share input do?

It sets how much of the rework cost is charged to this lot versus shared or absorbed elsewhere. At 100% the full variable cost lands here; lower it if part of the effort is allocated to overhead or another job.

When should I scrap instead of rework?

Compare the $0.78 effective per-piece rework cost against the unit's standard cost and scrap value. If reworking a low-value primer or case approaches or exceeds making a new one, scrap is usually the better call.

Does this include re-inspection of reworked parts?

Not automatically. If reworked components must be fully re-inspected, add that runtime to the inspection workload calculator and fold the result into your fixed or variable cost here.

What is the fixed disposition cost meant to capture?

Material Review Board time, paperwork, segregation, fixture or setup for the rework operation, and any deviation approval effort — costs you incur once regardless of how many units you rework.

Ammunition Components & Ballistics Manufacturing calculator

Ammunition Component Rework Cost Calculator

When a lot of cases, bullets, or loaded rounds fails inspection, rework is rarely free — sorting, re-gauging, re-annealing, or re-seating burns labor and ties up disposition resources. This calculator totals the true cost of reworking nonconforming ammunition components, combining the variable per-unit rework cost with fixed Material Review Board, disposition, or setup charges. Quality engineers and cost accountants use it to decide whether to rework, scrap, or accept-as-is, and to feed cost-of-quality reporting. Seeing that a 1,800-unit rework actually costs $1,406 once fixed disposition is added often changes the rework-versus-scrap decision.

What this calculator does

Estimate rework cost from reworked component count or hours, rework cost rate, recoverable share, and fixed disposition cost.
a quality or operations team needs to estimate the cost impact of rework for a held lot
It computes total rework cost impact by combining variable rework (quantity times rate times capture share) with a fixed disposition or setup cost, and derives an effective per-piece rate.

Formula used

Variable rework cost = reworked component count or hours × rework cost rate × applied rework cost share
Total rework cost impact = variable rework cost + fixed disposition or setup cost

Inputs explained

Components reworked or rework labor hours:
Cost to rework one unit or one hour:
Share of rework actually charged to this lot:
Fixed disposition, MRB, or setup cost:

How to use the result

Use it when an inspection or supplier issue forces a disposition decision, or when rolling up cost-of-quality for a period or a specific nonconformance.
It assumes a single flat rework rate; multi-step rework, re-inspection of reworked units, and the risk that rework introduces new defects are not modeled and can push real cost higher.

Current U.S. benchmarks

Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate rework cost? Multiply the reworked quantity or hours by the rework rate and by the share charged to this lot to get variable cost, then add fixed disposition cost. With 1,800 units at $0.42, full capture, plus $650 fixed, the total is $1,406.
Why is the effective per-piece rate higher than the rate I entered? Because the $650 fixed disposition cost is spread across the reworked units on top of the variable $0.42. That lifts the effective rate to about $0.78 per piece — the number that should drive your rework-versus-scrap math.
What does the capture share input do? It sets how much of the rework cost is charged to this lot versus shared or absorbed elsewhere. At 100% the full variable cost lands here; lower it if part of the effort is allocated to overhead or another job.
When should I scrap instead of rework? Compare the $0.78 effective per-piece rework cost against the unit's standard cost and scrap value. If reworking a low-value primer or case approaches or exceeds making a new one, scrap is usually the better call.
Does this include re-inspection of reworked parts? Not automatically. If reworked components must be fully re-inspected, add that runtime to the inspection workload calculator and fold the result into your fixed or variable cost here.

Last reviewed 2026-05-12.