The 90-day cash gap every manufacturer needs to plan for

You pay for raw materials on March 1. Production runs through March. Finished goods ship on April 5. The customer pays on June 15. For 106 days, the cash you spent on materials is gone from your account and has not been replaced by customer payment.

This is the cash conversion cycle, and it is the defining financial challenge for manufacturers. Revenue may be strong. Margins may be healthy. But cash is locked in materials, production, and receivables for months at a time.

How the cycle works

Day one: you pay suppliers for raw materials. Days 1 to 30: materials move through production as work in progress. Days 30 to 35: finished goods ship to the customer. Days 35 to 95: you wait for payment on Net 60 terms.

During this entire period, cash is committed but not recovered. Payroll runs every two weeks. Facility costs bill monthly. Equipment financing charges on schedule. The business operates on cash reserves or credit lines that bridge the gap between spending and collection.

Why 90 days is the baseline

Many manufacturers operate with a 60 to 120 day cash conversion cycle depending on production time, shipping method, and customer payment terms. A 90-day cycle is a reasonable baseline for planning: one month in production, two months waiting for payment.

At $500K monthly material costs, a 90-day cycle means $1.5M in cash is perpetually tied up in the production-to-collection pipeline. That is not a one-time investment. It is a permanent working capital requirement that scales with production volume.

Managing the cycle

Shorten the cycle wherever possible. Negotiate faster payment terms with customers. Offer early payment discounts that cost less than the credit line interest you pay to bridge the gap. Extend supplier payment terms to align outflows with expected inflows.

Cash conversion cycle measurement makes the invisible visible. Calculate days inventory outstanding, days sales outstanding, and days payable outstanding. The sum is your cash conversion cycle. Track it monthly and target reductions in each component.

Build cash reserves or credit facilities sized to your actual cycle, not a generic benchmark. If your cycle is 95 days and monthly material costs are $400K, you need $1.27M in bridge financing capacity.

Planning production around cash

Before accepting a large order, model the cash impact: when materials must be purchased, when production costs hit, and when customer payment arrives. A profitable order that starts production before the previous order's payment clears can create a cash crisis.

Stagger production starts based on expected collection dates from previous orders. This discipline limits growth speed but prevents the pattern of fulfilling orders successfully while running out of cash to start the next one.

Measuring CCC monthly

Track days inventory outstanding, days sales outstanding, and days payable outstanding separately each month. Improvements in any one component shorten the cycle. A five-day reduction in receivable collection across a high-volume line can free more cash than cutting a low-impact expense line.

Manufacturers who measure and manage the cash conversion cycle treat working capital as a strategic constraint, not an accounting afterthought.