Terms

Terms of use.

Effective and last reviewed 23 October 2026.

Educational estimates

The calculators, articles and examples are provided for general business education. Results depend entirely on the inputs and assumptions chosen by the user. They are not guarantees of cost, price, profit, tax treatment, demand or legal compliance.

Professional advice

Nothing on this site is accounting, tax, investment, legal, insurance, employment or product-safety advice. Consult a qualified professional for advice about a specific situation and follow the manufacturer's safety and operating instructions.

User responsibility

• Verify inputs, formulas, marketplace fees, taxes and local requirements.
• Use appropriate ventilation, fire prevention and personal protective equipment.
• Obtain the rights needed for artwork, fonts and customer-supplied files.
• Test work before committing to a customer's order or a large material purchase.

Availability and changes

The site may be changed, paused or unavailable. Articles may be updated when calculations, sources or operating practices change. External links do not imply continuing endorsement or control over the destination.

Intellectual property

Original site text, layout and calculator code are protected by applicable law. Product names, trademarks and third-party materials belong to their respective owners.