The most common quoting mistake is treating materials markup and job profit as one number. They are two different decisions: markup covers the cost of handling materials (ordering, hauling, returns, waste), and profit is what the business earns on the whole job. The calculator keeps them as two lines on purpose.
With sample numbers: materials $2,000 at a 1.3 markup is $2,600. Labor at 40 hours and a $75 loaded rate is $3,000. Equipment $400, permits $200. Subtotal $6,200; a 15% profit margin on the subtotal adds $930, and the quote is $7,130. Every one of those numbers is a sample; the structure is the product.
The labor rate in a quote is not the wage. It carries payroll taxes, insurance, downtime, and overhead per hour on the tools. As a sample of the shape (sample numbers, not wage data): a $30 wage might carry to a $50 to $75 loaded cost once those are added; quoting off the bare wage is how profitable-looking jobs lose money.
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