Contract Manufacturing, Job Shop Quoting & Make-to-Order calculator
Outside Processing Markup Calculator
Outside processing markup is the margin a job shop applies on top of pass-through subcontract costs like plating, heat treatment, anodizing, or special coatings before billing the customer. Estimators and contract manufacturing managers use it because outside services often carry handling, freight coordination, inspection, and risk that a straight cost pass-through never recovers. On a make-to-order line, a few percent of markup across every outside PO compounds into real annual margin. This calculator turns your per-lot outside cost, lot count, target markup, and the share of markup a customer will actually accept into a single recoverable dollar figure you can defend in a quote review.
What this calculator does
- Estimate recoverable markup dollars on outside processing in a job quote.
- pricing pass-through supplier services without losing administration, risk, and cash-flow cost
- It multiplies outside processing cost per lot by the number of lots to get gross opportunity, then applies your target markup percentage and the customer-accepted share to return recoverable markup dollars.
Formula used
- gross outside processing markup opportunity = outside processing cost per job or lot × outside processing lots or purchase orders
- recoverable outside processing markup = gross outside processing markup opportunity × outside processing markup percentage × customer markup acceptance
Inputs explained
- outside processing cost per job or lot: Use supplier quoted cost for plating, heat treat, coating, testing, grinding, certification, or other outside service per lot.
- outside processing lots or purchase orders: Count the lots, purchase orders, releases, or line items requiring outside processing for the quoted work.
- outside processing markup percentage: Use the markup percentage intended to recover purchasing, quality follow-up, freight coordination, risk, and cash timing.
- customer markup acceptance: Use less than 100% if the customer caps pass-through markup or expects open-book supplier pricing.
How to use the result
- Use it when quoting jobs that route through subcontract operations like plating, heat treat, or coating and you need to size how much margin the outside spend can carry.
- It assumes a single blended markup rate and acceptance share across all lots; if individual customers or services accept different markups, run them separately rather than blending.
Current U.S. benchmarks
- The U.S. prime lending rate is 6.75% (Federal Reserve via FRED, 2026-07-02). Payback and financing math should start from today's rate, not a remembered one.
Common questions
- How do you calculate outside processing markup? Multiply outside cost per lot by the number of lots for gross opportunity, then multiply by your markup percentage and the customer-accepted share. At $1,800/lot x 5 lots x 18% x 100% acceptance, recoverable markup is $1,620 on $9,000 of outside spend.
- What is a typical markup on outside processing? Most job shops apply 10-25% on subcontract operations to cover handling, freight, inspection, and the risk of holding the customer's parts at a third party. The 18% default sits squarely in that band; higher markups are common when the shop carries warranty exposure on the outside operation.
- Why mark up outside services at all if it is a pass-through cost? Because it is rarely a true pass-through. You coordinate logistics, double-handle parts, inspect incoming work, and absorb scrap risk if the plater or heat treater damages the lot. Markup recovers that overhead and the working capital tied up while the PO is open.
- What does customer markup acceptance mean? It is the share of your intended markup the customer will actually agree to pay. At 100% you recover the full $1,620; at 70% acceptance you would recover $1,134 and carry $486 as markup at risk that you must absorb or renegotiate.
- Gross opportunity vs recoverable markup, what is the difference? Gross opportunity ($9,000 here) is the total outside spend you could theoretically mark up. Recoverable markup ($1,620) is the margin you actually capture after applying your rate and the acceptance share. The $7,380 gap is base cost you pass through without markup.
Last reviewed 2026-05-12.