CASH FLOW — PROCUREMENT

WHEN YOU BUY IS A CASH DECISION.

QUICK ANSWER

Most subcontractors treat material buying as a logistics problem: order it so it shows up before the crew needs it. The cash side never gets planned — so a $180K package lands net-30 while the pay app that bills it collects in 60, and the line of credit eats the spread. Procurement forecasting maps every major buy against the billing calendar before the PO goes out: when it's needed, when it can be billed, what deposit terms move the float, and whether stored-material billing can close the gap. Same material. Same jobs. Months less float.

THE PO DATE IS A FINANCING DECISION. MOST SUBS LET THE SUPPLIER MAKE IT.

BY JOSH LUEBKER Published: June 2026 Updated: June 2026

THE MECHANICS

FOUR LEVERS INSIDE EVERY MAJOR BUY.

LEVER 01 — LEAD TIME VS BILLING TIME

Buy Against the Billing Calendar, Not Just the Schedule

The field needs gear on site March 15. Logistics says order January 20. The cash question nobody asks: when does the pay app that carries this material go out, and when does it collect? If the answer is May, that PO just created a four-month float. Sometimes the float is unavoidable. It should never be unplanned — every buy over $25K gets mapped to its billing event before the PO is cut, and the 13-week cash forecast carries the spread.

LEVER 02 — DEPOSITS AND PROGRESS PAYMENTS

Negotiate the Payment Curve, Not Just the Price

Suppliers negotiate price because everyone asks about price. Almost nobody negotiates the payment curve — deposit percentage, progress payments on fabricated items, net terms tied to delivery versus order date. Moving a gear package from 50% deposit at order to 20% at order and the balance at delivery can shift $50K of cash need by eight weeks at zero cost. The supplier's finance team says yes more often than their sales sheet suggests, especially for subs who pay like clockwork.

LEVER 03 — STORED MATERIAL BILLING

Bill It the Month You Buy It

Most subcontracts allow billing for properly stored materials — on site or in a bonded yard, insured, documented. Most subs never use the clause because nobody told the PM it exists. A $120K material buy billed as stored material in the same cycle it lands converts the float from months to weeks. The documentation cost is photographs, an insurance certificate, and a line on the SOV. The return is your money back before the work is even in place.

LEVER 04 — PRICE LOCKS AND BUYOUT TIMING

Lock Volatile Commodities When the Bid Wins, Not When the Crew Mobilizes

Copper, steel, PVC, lumber — bidding off today's price and buying at mobilization six months later is an unhedged commodity position wearing a hard hat. Early buyout with locked pricing trades a small carrying decision for protection against the move that erases a job's margin. The forecast tells you whether the cash position can carry the early buy; the alternative is hoping the market stays put. Hope is not a procurement strategy.

WHO FEELS IT MOST

PROCUREMENT FLOAT, BY TRADE.

Electrical: The Gear Package

Switchgear and panel packages are the classic float: ordered months early for lead time, paid before installation, billed after. A $180K package bought in March, installed in May, billed in June, collected in July is a four-month float the bid never priced. Deposits negotiated down plus stored-material billing recover most of it.

Concrete: Volume Concentration

Ready-mix doesn't have long lead times — it has volume spikes. Three stacked pours put $200K of supplier invoices on net-30 against pay apps collecting in 60. Mapping pour schedules against the billing calendar tells you which months need the line and which months the line is funding bad planning.

Civil: Pipe, Aggregate, and Early Buyout

Underground utility and civil subs carry pipe and structure packages that reward early buyout on price but punish it on cash. The forecast makes it a real decision: the 4% price protection against the 60-day carrying cost, decided with numbers instead of nerve.

Structural Steel & Specialty: Fabrication Deposits

Fabricated packages front-load cash hard — deposits at order, progress payments through fab, delivery before billing. Progress-payment schedules tied to fabrication milestones, mirrored by stored-material and fabricated-item billing to the GC, keep the sub from banking the fabricator's float.

WHAT CHANGES WHEN THIS IS FIXED

WHAT FORECASTED PROCUREMENT BUYS YOU.

13 Weeks

Every major buy, visible before it lands. The 13-week cash forecast carries every PO over $25K as a planned event — amount, date, and the billing event that recovers it. Material spikes stop being surprises that max the line and start being scheduled draws with scheduled repayments. The line of credit goes back to being a timing tool instead of a shock absorber.

$310K

What billing-side timing recovered in 30 days. A $7.1M civil contractor's procurement-and-billing timing was so misaligned he was days from merchant cash advances. Rebuilt SOV structures, pay-app timing, and collections produced $310K of recovered receivables in the first 30 days — the same discipline that maps buys to billings, run in reverse.

Zero

Surprise supplier-driven cash crunches. The goal state: no PO ever creates a cash gap the forecast didn't already show. Buys get timed, deposits get negotiated, stored material gets billed, and the biggest material month of the year is just another planned week — boring, funded, and already collected against.

Frequently Asked Questions

Match the forecast to your longest lead-time package plus one billing cycle — for most commercial subs that's 13 weeks rolling, extended per-job for long-lead items like switchgear or fabricated steel that can run 6–9 months. The discipline isn't precision at week 13; it's that nothing over $25K ever hits the bank account without having been on the forecast first. Update weekly, and let the PMs feed delivery-date changes the same day they learn them.

Usually, yes — deposit terms are set by the supplier's risk view of you, not by policy stone. Subs with clean payment history can typically move deposits down, shift balances to delivery, or convert one big deposit into fabrication-milestone progress payments. The ask works best paired with something the supplier values: committed annual volume, faster payment on the back end, or early commitment on the order. If your supplier won't move at all, that's pricing information — get a second quote with payment terms as part of the comparison, not an afterthought.

Three things, all cheap: proper storage (on site or insured bonded warehouse), documentation (invoices, photos, an insurance certificate naming the materials), and an SOV that breaks material out where it can be billed. The contract language is standard in most commercial subcontracts — AIA G702/G703 has a stored-materials column built in. The reason most subs never use it isn't GC resistance; it's that nobody set up the billing structure to support it. SPM builds it into the SOV at job setup so the PM just uses it.

It pencils when the price risk is bigger than the carrying cost — which you can only know with both numbers in hand. A 5% likely price move on a $200K package is $10K of exposure; carrying that buy 90 days on a line at 9% costs about $4,500. The forecast tells you whether the cash position can absorb the buy without stress. What doesn't pencil is the unplanned version: buying early on instinct, blowing the cash plan, and funding the difference with panic draws. Same purchase, completely different outcome.

SPM builds it into the operating system during the 60-day install: the PO-to-billing mapping discipline, the stored-material billing structure in your SOVs, the 13-week forecast that carries every major buy, and the monthly review where procurement timing gets decided with the numbers on the table. Your PMs and office run the day-to-day inside ControlQore; SPM keeps the system honest and brings the cash judgment to the buys that matter. Core Financial starts at $1,900/month, Executive at $2,900/month.