How Does a Construction Company Free Up Trapped Working Capital?
A construction company frees trapped working capital by finding which stage of the bill-to-cash cycle is holding the money, then removing days from the stages it controls. This guide maps six places cash gets stuck and how to measure each.
9 min read
A construction company frees trapped working capital by finding which stage of the bill-to-cash cycle is holding the money, then removing days from the stages it controls. Most of the cash sits before an invoice exists and in retention, so receivables ageing alone does not show it.
Last updated 17 October 2026. The worked figures below are sample numbers from Crestline's glossary, not data from any customer, and each is labelled with its basis.
Where does cash get stuck in a construction company?
Cash in a construction company gets stuck in six places: work executed but not certified, the RA bill, certification lag, retention money, vendor payment timing and collection time. Each has a different mechanism and a different owner, which is why one "collections push" rarely frees much.
| Where cash is stuck | Mechanism | Who usually controls it |
|---|---|---|
| Work executed, not yet certified (unbilled revenue) | Work is done but no invoice can be raised until measurement and sign-off finish, so the money sits outside receivables | Contractor and client jointly |
| RA bill | The bill cycle, more than payment terms, decides when money arrives; each rejection restarts the queue | Mostly the contractor, through what is submitted |
| Certification lag | Days between submitting a bill and the client certifying it; no standard finance report measures it | Shared; a large part is caused by what was submitted |
| Retention money | The share of each certified bill, commonly 5 to 10 per cent, held back until completion and the defects liability period | Client holds it; contractor must chase it |
| Vendor credit (DPO) | Paying a supplier earlier than agreed terms moves cash out before it had to leave | Contractor |
| Collection time (DSO and contractor DSO) | Days from billing, or from work completion, to cash received | Split between contractor and client |
Source for the mechanisms: Crestline glossary entries linked above, reviewed 17 October 2026.
What is trapped working capital in construction?
Trapped working capital in construction is earned money that exists on paper but is unavailable to fund the next mobilisation. On a project it is mostly work done but not certified, bills certified but not paid, and material bought ahead of need.
Working capital is receivables plus inventory less payables. On an EPC project, unbilled work in progress and retention money belong in receivables even where the balance sheet parks them elsewhere. A profitable project can still run out of cash, because working capital decides whether the next mobilisation is funded by the client or by the bank.
How much cash can a construction company free by removing days?
Removing days from the cash cycle frees cash in proportion to annual turnover. Taking ten days out of a 70-day cash conversion cycle on a project business turning over ₹100 crore a year frees roughly ₹2.7 crore permanently, without winning a new order.
| Input | Value | Basis |
|---|---|---|
| Annual turnover | ₹100 crore | Sample figure, Crestline glossary, cash conversion cycle entry |
| Days removed | 10 | Sample figure, same entry |
| Calculation | ₹100 crore ÷ 365 × 10 | Revenue per day times days removed |
| Cash freed | about ₹2.7 crore | Computed, reviewed 17 October 2026 |
The cash stays freed for as long as the shorter cycle holds. The figure scales with turnover on the same arithmetic.
Why does work executed but not certified hide from finance reports?
Work executed but not certified hides because nothing has been invoiced, so it appears in no receivables ageing and no DSO. Measurement, joint certification and client review all happen before an invoice can exist.
This is the main reason a company can report a healthy DSO and still run short of cash. Standard DSO measured from the invoice date rewards billing late. In the glossary's sample quarter, DSO from the invoice date is 94 days, and the same quarter measured from work completion is 117 days. The 23-day gap is certification, which the standard formula cannot see. Measured this way, the number is called contractor DSO.
How does the RA bill cycle decide when cash arrives?
The RA bill cycle decides when cash arrives because every running account bill must be measured, submitted, certified and invoiced before payment is due. A bill rejected over one line item goes back into the client's review queue and the wait restarts.
The date printed on an RA bill is usually the acceptance date, not the date the work was done or first submitted. A resubmitted bill often carries only the new date, which erases the delay a finance team is trying to find. For the full bill journey, read how to find working capital stuck in RA bills. Much of certification lag is caused by what was submitted, such as a missing measurement sheet, an unagreed rate or an unapproved variation order, so it can often be shortened without asking the client for anything.
Why is retention money often the largest forgotten block?
Retention money is often the largest single block of trapped cash on a finished project because it has no due date in most finance systems and no owner once the project team has moved on. Release depends on a certificate, not a date.
| Retention item | Sample value | Basis |
|---|---|---|
| Contract value | ₹86.0 crore | Sample, Crestline glossary, retention money entry |
| Retention rate | 5% | Same entry |
| Total retained across all bills | ₹4.30 crore | ₹86.0 crore × 5% |
| Released at practical completion | ₹2.15 crore | Half, as the glossary example assumes |
| Still held through defects liability | ₹2.15 crore | Remainder |
Age retention from the completion certificate rather than the invoice, and carry it as its own line with a named owner. Read how retention money works on Indian contracts and the defect liability period entry for the release trigger. Tax may be deducted from contractor payments; see the TDS on contractor payments entry and check the current Income-tax Act provisions before relying on any rate.
Does paying vendors later free working capital?
Paying vendors and subcontractors later lengthens DPO and improves the cash conversion cycle on paper, but the business is not healthier for it. The cost returns as worse rates, slower mobilisation and disputes, and none of it shows in the metric.
The benchmark for DPO is the vendor's own agreed terms, not zero. In the glossary's sample quarter, payables of ₹22.8 crore against cost of sales of ₹49.5 crore over 91 days give a DPO of 42 days against 45-day terms. Paying three days early on ₹49.5 crore a quarter sends roughly ₹1.6 crore out before it had to leave. Releasing cash on this side means paying on terms, not before them.
Some suppliers are protected by law. The MSME 45-day payment rule limits how long a buyer can take to pay a micro or small enterprise. The rule and its tax treatment have been amended before, so check the current text of the MSMED Act, 2006 and section 43B of the Income-tax Act, 1961, and take advice before acting.
Which block should a construction company fix first?
Fix first the block where cash is largest and the contractor controls the delay. For most EPC companies that means the days between work execution and invoice, then retention ageing, then early vendor payments.
- Measure from execution, not from the invoice. Start the clock when work is done.
- Split internal waits from client waits. Argue about them separately.
- Weight each wait by bill value. A 30-day wait on ₹5 crore matters more than on ₹50 lakh.
- Age retention from the completion certificate and give it an owner.
- Pay each vendor on its own agreed terms.
Cost of delay turns these into one ranked list: days waited times cases affected times cost per case per day. It rests on an assumed cost of capital, so treat the result as a ranking, not an exact rupee figure.
How does Crestline find trapped working capital?
Crestline is process intelligence software for EPC finance teams. Crestline reads the event log an ERP already writes, read-only, rebuilds the path each RA bill, retention release and vendor payment took, and prices each delay in rupees with the step and the owner named. The method is described on the process mining for EPC finance page.
Grey Infra ERP is the only live connector today; other systems are not yet available, ask on the scoping call. For the receivables side in detail, read how to find cash stuck in RA bills.
What Crestline is not
- Crestline is not an ERP or accounting software. It holds no ledger and issues no invoice.
- Crestline is not project management or scheduling software.
- Crestline does not write back to source systems. It is read-only.
- Crestline is not a general-purpose process mining platform. The comparison of process intelligence software for construction says where other tools fit better.
For the step-by-step method, read where cash is stuck in my projects and how to find it.
To see these six blocks measured on your own data, book a Crestline demo.
Key takeaways
- Cash in a construction company is stuck in six places: uncertified work, the RA bill, certification lag, retention, vendor payment timing and collection time.
- Most of it sits before an invoice exists or in retention, so standard receivables ageing cannot see it.
- Sample arithmetic: ten days off a cash cycle on ₹100 crore of annual turnover frees roughly ₹2.7 crore.
- Fix the blocks the contractor controls first: execution to invoice, retention ageing and early vendor payments.
- Paying vendors later improves the metric, not the business. Check current law on MSME payment limits.
Frequently asked questions
What is the fastest way to free working capital in construction?
The fastest way is usually to shorten the days between work execution and invoice, because the contractor controls most of that stretch. Measure it per RA bill from the date work was done, then remove the repeated causes of rejection.
Is retention money part of working capital?
Yes. Retention money is earned revenue held by the client, so it belongs in an EPC company's working capital even when reported separately. Age it from the completion certificate, not the invoice date.
Does Crestline replace the ERP?
No. Crestline reads the ERP's event log read-only and does not replace or write back to it.
- Working capital