A bigger contract can move your construction company into a stronger market. It can also commit your best team and your available cash before the first payment arrives. The useful question is not simply, “Can we win it?” It is, “Can we deliver it profitably without weakening the rest of the business?”
For established construction limited companies turning over more than £1m across Sheffield, Rotherham, Barnsley, Doncaster and wider South Yorkshire, that deserves a formal bid/no-bid financial gate. Use it before spending heavily on a tender, then refresh it before accepting the award. More turnover is not automatically more profit. The payroll run is unlikely to applaud your larger order book.
Start with the resources the contract will actually consume
This is not another exercise in choosing a mark-up. Take the tender forecast and ask what changes when this particular job joins your existing workload. Who supervises it? Which plant becomes unavailable elsewhere? Will you need additional commercial support, specialist subcontractors or temporary recruitment?
Build those consequences into the job-cost forecast. Include mobilisation, site overheads, realistic productivity, procurement commitments and the cost of completing and closing out the work. Separate costs already covered by existing capacity from costs the new contract genuinely adds. Do not assume the same supervisor can cover two demanding sites because the spreadsheet has enough columns.
Show the expected contribution towards company overheads, then the profit remaining after relevant overheads and finance costs. Use the actual programme to estimate borrowing interest and fees. If the margin only works by excluding those costs or assuming every resource runs perfectly, it has not passed the gate.
Give mobilisation its own cash forecast
Profit measures the expected financial result; cash determines whether you can fund delivery along the way. A profitable job can still create a funding gap when material deposits, wages, plant hire and site setup are paid before customer receipts.
Map those payments against the programme, using weekly detail around mobilisation and other tight periods. The British Business Bank’s forecasting guidance recommends covering at least the cash-flow cycle and recording income when cash actually reaches the bank. Apply that approach to the proposed job, then combine it with your existing contracts and company commitments.
Check the VAT treatment rather than copying a previous job. Where the construction VAT reverse charge applies to your supply, you will not receive VAT from the customer. HMRC’s technical guidance explains that this reduces gross incoming payments and requires cash-flow planning. Do not build a VAT receipt into the funding plan when none is due.
Turn payment clauses into explicit assumptions
Before approving the bid, identify the route from completed work to cash: application dates, supporting evidence, valuation or certification requirements, payment due dates and the final date for payment. Record retention deductions and release conditions as separate receipt assumptions, not as cash available during mobilisation.
Public-sector work needs a specific check. The Cabinet Office’s electronic invoicing and payment guidance explains implied payment terms for most public contracts and relevant subcontracts, subject to exceptions. It distinguishes receipt of a valid, undisputed invoice from later validation and requires notification without undue delay when an invoice is considered invalid or disputed.
Check which procurement regime and terms apply to the actual contract. Do not transfer public-procurement rules to an ordinary private contract. Equally, a contractual payment deadline is not a guarantee that cash will arrive as expected. Your forecast needs both the contractual baseline and a realistic downside view.
Test a delay before the business has to absorb one
Run a second forecast in which a valuation takes longer to certify, where certification is relevant, and a payment arrives later than planned. Move the receipts, but leave wages, supplier commitments and existing company obligations on their expected dates. This tests resilience; it does not suggest that the customer has a legal right to delay payment.
Follow the lowest combined cash balance. How much usable headroom remains after protecting payroll, tax commitments and delivery on current jobs? Count only funding that is confirmed and available when needed, after checking facility conditions and existing usage. A possible loan is not the same as an available facility.
Recalculate finance costs under the delayed-receipt forecast. The contract may remain profitable but require too much cash, or it may consume both headroom and margin. That difference matters: one problem calls for different funding or payment arrangements; the other may require a different price, programme or decision.
Make the answer commercial, not merely cautious
Your gate should produce one of three answers: bid, bid subject to specified changes, or no bid. Agree minimum acceptable profit and cash headroom before the excitement of an award affects judgement.
A conditional bid might depend on phased mobilisation, clearer payment milestones, a workable resource plan or confirmed finance. Give each condition an owner and resolve it before acceptance. If the contract crowds out better work or threatens current delivery, declining it can protect your ability to grow well.
Three Actions to Take Next Week
- Choose your largest live opportunity and reconcile its tender estimate with the delivery team’s resource plan. Include added supervision, mobilisation, company overheads and realistic finance costs.
- Build the job’s cash timeline alongside existing commitments. Check payment and retention assumptions, then delay certification and receipts to identify the lowest balance and remaining usable headroom.
- Hold a director-level bid/no-bid meeting. Record the decision, unresolved conditions and owners, then repeat the gate before accepting any award or materially changed terms.
Grow on terms the company can support
A bigger contract should strengthen the business, not simply enlarge its workload. To turn tender forecasts into a clear profit-and-funding decision, book a consultation with Tax by Sterling about your next stage of commercial growth.
Which assumption would most change your next bid/no-bid decision: delivery capacity, payment timing or the cash headroom left for your existing jobs?
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