Should certification cost be in required cost?

Include certification cost when the customer or product claim requires it for the quoted program.

Can I use this per kg or per part?

Yes, as long as selling amount, required cost, and reference amount use the same basis.

Where should scrap be included?

Include expected scrap in required cost or calculate scrap separately and add it to the quote model.

How can I use the result?

Use it to approve quotes, negotiate resin cost, adjust pricing, or choose a different material or process route.

Bioplastics & Biomaterials Processing calculator

Bioplastic Margin Calculator

Bioplastic margin shows whether a quote or program price covers resin premiums, drying, scrap, certification, conversion, packaging, and sustainability requirements. Estimators and product managers use it to decide whether PLA, PHA, PBAT, starch blend, or cellulose-based alternatives can meet commercial targets.

What this calculator does

Calculate margin for bioplastic resin, compound, molded parts, films, sheets, or compostable packages from selling amount, required cost, and margin reference basis.
a processor or biomaterials supplier needs to check whether a resin, part, sheet, film, or packaging quote meets margin requirements
Returns margin dollars and margin percentage for the selected bioplastic or biomaterial quote.

Formula used

Bioplastic margin dollars = quoted bioplastic selling amount - required biomaterial cost
Bioplastic quote margin = bioplastic margin dollars ÷ reference selling amount

Inputs explained

Quoted bioplastic selling amount: Use quoted revenue for the resin lot, compound, molded parts, film rolls, sheet, or compostable packaging job.
Required biomaterial cost: Include resin, additives, drying, processing, scrap, certification, labor, packaging, overhead, and freight as needed.
Reference selling amount: Use selling amount for gross margin percentage or another finance-approved quote basis.

How to use the result

Use it for resin substitutions, compostable packaging quotes, contract processing, and customer pricing decisions.
It is a simplified margin check; taxes, rebates, freight terms, and accounting treatment may change reported margin.

Common questions

Should certification cost be in required cost? Include certification cost when the customer or product claim requires it for the quoted program.
Can I use this per kg or per part? Yes, as long as selling amount, required cost, and reference amount use the same basis.
Where should scrap be included? Include expected scrap in required cost or calculate scrap separately and add it to the quote model.
How can I use the result? Use it to approve quotes, negotiate resin cost, adjust pricing, or choose a different material or process route.

Last reviewed 2026-05-12.