WebSoftOSProject cost & quote calculator
Estimated project cost = direct cost (material, labour, equipment, subcontract) + overheads + contingency. The quote value that gives your target margin = cost ÷ (1 − margin %). GST is then added on the quote.
Result
| Direct cost | ₹22,50,000 |
|---|---|
| Overheads | ₹1,80,000 |
| Contingency | ₹1,21,500 |
| Estimated project cost | ₹25,51,500 |
| Quote value (before GST) for target margin | ₹28,99,432 |
| Expected profit | ₹3,47,932 |
| GST | ₹5,21,898 |
| Quote value incl. GST | ₹34,21,330 |
Choosing contingency
Use 3–5% for well-defined repeat work and 8–15% where drawings are incomplete or rates are volatile. Contingency is for risk, not for hiding margin.
Frequently asked questions
Should margin be calculated on cost or on quote?
Margin is a share of the quote (selling price). A 12% margin needs a quote of cost ÷ 0.88, which is a 13.6% markup on cost.
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