Infrastructure projects—highways, power plants, water systems, metro networks—routinely run 18 to 60 months. Payment is typically milestone-based: you invoice only when a defined stage (design approval, foundation complete, 50% structural work) is certified. The gap between spending and receiving cash can run 60–90 days or longer, leaving contractors and equipment suppliers chronically short of working capital.
This playbook walks you through the real mechanics of milestone structuring, advance funding options, and cash-flow protection.
Advisory
Most infrastructure contracts define milestones in broad terms ('structural works 50% complete') without specifying inspection criteria, documentation or certification timelines. Ambiguity delays invoice approval and payment by weeks.
Clients routinely withhold 5–10% of invoiced amounts until final handover or defect-liability periods end (often 12 months post-completion). This locks in cash for longer than the project itself.
Many contractors rely on bank overdrafts at 9–12% p.a. rather than supply-chain financing, receivables discounting or vendor-led credit schemes designed for project-based businesses.
Structuring milestone billing correctly is not merely operational—it is a governance and tax matter. Under the Indian Accounting Standards (Ind AS 115), revenue recognition on infrastructure contracts is tied to milestone completion and certification; premature recognition can trigger GST demands and auditor scrutiny. Milestone contracts may also attract different GST treatment depending on whether payments are linked to physical completion or contractual stages. Vinayakam Consultants helps infrastructure firms map their contracts to Ind AS 115 and GST requirements, design advance-funding structures (CGTMSE loans, invoice discounting, bill-discounting arrangements) that bridge cash gaps without distorting financial reporting, and negotiate retention clauses that balance client risk with contractor liquidity.
Your action checklist
- Map each major contract's milestones to Ind AS 115 revenue-recognition gates; confirm that certification triggers (inspection checklists, third-party sign-off, documentary proof) are explicit in the signed contract.
- Request advance payment schedules in new bids: structure 10–20% upfront, 70–80% on monthly invoices (not just big milestones), and 10% retention released 6 months post-completion rather than 12.
- Explore supply-chain financing: approach your material suppliers and sub-contractors to offer early-payment discounts in exchange for you paying invoices 45–60 days after receipt, using milestone cash inflows to settle.
- Set up a working-capital reserve fund (3–6 months of average monthly spend) using a dedicated term loan or CGTMSE-backed facility, ring-fenced for gap-bridging rather than general operations.
Frequently asked questions
Milestone billing is a payment structure where contractors invoice clients only when defined project stages (design approval, foundation completion, structural work milestones) are certified and completed. Payment typically follows certification by 60–90 days or longer.
Clients withhold 5–10% of invoiced amounts until final handover or defect-liability periods (often 12 months post-completion), locking cash beyond project completion and widening working capital gaps for contractors.
Premature revenue recognition before milestone certification can trigger GST demands and auditor scrutiny. Milestone contracts may attract different GST treatment depending on whether payments are tied to physical completion or contractual stages.