Project Cash Flow (S-Curve)
Monthly billing, retention and net cash position across a project.
Inputs
Results
Enter your values, then press Calculate Now to evaluate the output.
Guide — Project Cash Flow (S-Curve)
The project cash flow calculator below follows standard Indian construction practice and the relevant IS-code conventions. Enter the site dimensions exactly as measured, press Calculate Now, then refine the quantities line by line in the live sheet before you export.
Construction billing follows an S-curve: slow in the mobilisation phase, steepest through the structural period, and flattening during finishing and snagging. Straight-line monthly billing overstates early cash inflow.
Retention of 5–10% is deducted from every running account bill and released half on practical completion and half after the defects liability period, so plan a year of blocked capital on it.
Peak working capital typically equals two to three months of the run-rate spend. Sanction the overdraft before the structural peak, not after payments start slipping.
Treat every output as an indicative pre-tender estimate. Site conditions, wastage allowances, specification changes and local market rates all move the final figure, so validate against your drawings and approved rate analysis before procurement.
Master Measurement Sheet
| Sr. No. | Description | Unit | NOS 1 | NOS 2 | L | B | D | QTY | Action |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1.000 |
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About the Project Cash Flow (S-Curve)
This tool is built for site engineers, quantity surveyors, contractors and property investors who need dependable numbers fast. Every input is reactive — changing a single field instantly recomputes the full output set, so you can run sensitivity checks on dimensions, grades and rates before committing to an estimate.
Keep unit consistency in mind: metric inputs (metres, square metres, cubic metres) produce metric outputs, with imperial and Indian trade units shown alongside where they are commonly used on site.