The formula
Financing cost ≈ (Deposit × Total weeks + Balance × (Ship + Collect weeks)) ÷ 4.33 × Monthly rate%
The two tranches carry different windows: the deposit is out from order placement to final collection (lead + shipping + collection), while the balance — typically paid at or near shipment — is out only for shipping plus collection. Weighting each tranche by its own window is what makes the financing figure honest.
The monthly rate should be your true marginal cost of funds: overdraft or credit-line rate if the order is debt-funded, or the return cash would otherwise earn if equity-funded. Even fully cash-funded businesses should price the window — cash carrying inventory is cash unavailable for the next opportunity, and orders compete for it.
How to use this calculator
- 1
Set the payment structure
Deposit percentage and when the balance falls due — at shipment, against documents, or on arrival. The structure moves the windows.
- 2
Enter realistic durations
Production lead time from the supplier’s history (not their quote), shipping time for your route and mode, and your honest sell-and-collect period.
- 3
Price the committed cash
Apply your marginal cost of funds. The output is the order’s working-capital cost in money, not sentiment.
- 4
Stress the timeline
Add two weeks of production slip and two of slow sales — supply chains deliver late more often than early, and the financing cost scales with every added week.
The growth trap this number predicts
Order cash cycles compound with growth: doubling monthly orders doubles the cash permanently trapped in the pipeline, because each order’s recovery funds arrive a full cycle after its outlays. A business on 14-week cycles growing 20% per quarter needs continuously more cash even while every order is profitable — the classic profitable-but-illiquid failure mode. The fix begins with knowing the per-order number this calculator produces.
The levers rank by impact: shortening the collection period (your own receivables discipline — the DSO Improvement Calculator prices it), negotiating lower deposits or later balances with suppliers, shortening shipping via mode or routing choices, and financing the cycle deliberately with trade finance rather than accidentally with strained cash. Each week removed from the cycle releases cash across every future order simultaneously.
Payment structure as a negotiation surface
Deposit percentages are pricing in disguise. A supplier moving you from 30% to 50% deposit has extended their financing at your expense — on the order above, roughly $233 of additional financing cost — without touching the unit price. Symmetrically, offering a slightly higher unit price for a 20% deposit and balance-after-arrival terms can be net-cheaper once financing is priced. Negotiate the structure with the same energy as the price.
Trust instruments widen the negotiable range: suppliers demand high deposits from buyers they cannot assess. Payment through structured workflows — documented deposit-and-balance plans, escrow-style arrangements on eligible routes, verified payment histories — substitutes for blind trust and supports lower deposits over time. KeyBS Pay’s corridor pages document structured payment options per route.
Common use cases
Pre-order feasibility
Price the cash window before committing to an order the margin says yes to.
Deposit negotiation
Quantify what a 20-point deposit reduction is worth in financing cost.
Growth planning
Multiply the per-order trap by the order pipeline to see the cash growth really needs.
Financing structuring
Size and tenor a trade-finance facility against the actual cycle rather than a guess.
Automate this with the API
Turn the same order into a dated deposit/balance payment plan.
curl "https://keybs.io/api/v1/tools/payment-plan?value=30000&deposit_pct=30&lead_weeks=4&ship_weeks=6" \ -H "x-api-key: YOUR_FREE_KEY"Free Tools API docs and key registration
Frequently asked questions
Why price cash I already have — it costs nothing to use, surely?
Cash committed to an order is unavailable for the next order, a discount opportunity, or a buffer against shocks — the cost is whatever that next-best use would have earned, and in a growing business that opportunity cost is usually higher than any overdraft rate. Pricing it keeps order decisions comparable with every other use of the same cash.
What monthly rate should I use?
Debt-funded: your marginal borrowing rate — overdraft or trade-finance line, divided by twelve. Equity-funded: the return cash earns in its next-best use, floor-ed at your deposit rate. Rates of 1–2% per month are typical entries for businesses in higher-rate markets; the calculator makes sensitivity testing instant.
The supplier wants a bigger deposit for a first order — reasonable?
Common, and rational from their side: they cannot price your reliability yet. Counter-options: a smaller first order at their deposit terms to build history, structured payments with documented milestones, or escrow-style workflows on eligible routes that protect both sides. Deposits usually fall as verified history accumulates.
How does shipping mode change the picture?
Air freight costs multiples of sea per kilo but removes 4–6 weeks from the cycle — weeks that carry financing cost on the full order value. For high-value, low-weight goods, the financing saved plus earlier revenue can offset much of the freight premium. Run the calculator at both durations and compare totals, not freight quotes.
Should I include duty and freight in the committed cash?
For precision, yes — they are paid before recovery too, typically at arrival. Add them to the balance tranche as a working approximation, or run the Landed Cost Calculator for the full outlay and use its total as the order value here. The cycle windows matter more than the exact split.
What does KeyBS Pay add to order cash management?
Payment-plan structuring on corridor routes (dated deposit and balance legs), committed quotes so each leg’s cost is fixed in advance (fees from 1.5%, route-dependent), and multi-currency accounts so collections can fund balances without double conversion. The tools API exposes a payment-plan endpoint used by this page’s automation link.
Corridors, tools and reading for this calculator
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