Last updated: 2026-09-02 · 5 min read

What Are Standard Mold Payment Milestones — and How Do They Protect Both Sides?

Mold payment milestones split the tooling cost into 3–4 tranches tied to verifiable events — deposit at order, progress payment at steel purchase or first article, balance at acceptance before shipment — and the structure protects both sides by linking each payment to evidence the buyer can review, not to calendar dates. Programs that pay 100% upfront lose leverage for corrections; programs that defer too much to the end strain the mold maker’s cash flow and risk delayed builds.

Cavity — The hollow space inside the mold that forms the part shape. Multi-cavity molds produce multiple parts per shot. Cavity count determines production output but also mold cost and complexity. Each cavity must be balanced for uniform fill. See also related guide.

Key Facts

  • The most common structure is 40/30/30: 40% deposit at order, 30% at T1 trial (first shots), 30% at acceptance before shipment — each payment triggers on evidence, not dates.
  • Alternative structures include 50/50 (two payments) for simpler tools and 30/30/30/10 (four payments) for complex or high-value programs where the buyer wants more checkpoints.
  • The final payment before shipment is the buyer’s leverage: once the mold leaves the maker’s floor, corrections require shipping back or on-site rework — both more expensive than bench corrections.

    • Cavity — The hollow space inside the mold that forms the part shape. Multi-cavity molds produce multiple parts per shot. Cavity count determines production output but also mold cost and complexity. Each cavity must be balanced for uniform fill. The related guide covers adjacent topics.

    Typical Milestone Structures

    Milestone 3-Payment (40/30/30) 4-Payment (30/30/30/10)
    Deposit 40% at order confirmation 30% at order confirmation
    Progress — 30% at steel purchase or first machining
    T1 Trial 30% against T1 samples and report 30% against T1 samples and report
    Acceptance 30% before shipment 10% before shipment

    What Each Payment Should Trigger

  • Deposit: the mold maker orders steel, reserves machine time and starts the design — evidence is the steel purchase order and the design kickoff meeting record.
  • Progress (4-payment only): the mold maker shows machining progress — evidence is photos or video of the mold on the machine, with visible mold number and date.
  • T1 trial: the mold maker delivers T1 samples with a dimensional report, trial video and process parameters — the buyer reviews the samples against the drawing before releasing payment.
  • Acceptance: the buyer (or their representative) inspects the mold and samples at the maker’s facility — evidence is the signed acceptance report, spare parts inventory and the complete documentation package.

    • What This Means for Your Quotation

    The mold quotation should specify the payment structure, what evidence triggers each payment, and what happens if the mold fails acceptance (correction timeline, who pays re-trial material, whether the final payment is withheld until re-acceptance passes). When the milestones are tied to evidence, both sides know what is expected; when they are tied to dates, disputes arise over delays that are nobody’s fault — material shortages, design changes or shipping disruptions.

    Frequently Asked Questions

    Why not pay 100% upfront for a better price?

    Some mold makers offer a modest price reduction for full upfront payment, but the buyer loses all leverage for corrections, spare parts and documentation. The final payment is the only mechanism that ensures the mold ships with the complete package — signed acceptance, spare parts and documentation. Without it, the buyer pays for a tool and discovers missing items after the money is gone.

    What if the T1 samples fail?

    The T1 payment is held until the samples pass the buyer’s review. The mold maker corrects the tool and re-trials at their cost (unless the failure is from a buyer-initiated design change). The quotation should specify how many re-trials are included and what triggers additional charges — typically, two re-trials on the same issue move to a design review, not another trial.

    How do international payments affect the milestone structure?

    Wire transfers take 2–5 business days internationally, so the payment trigger should account for bank processing time. The evidence (samples, report, video) is sent before the payment is initiated, so the buyer can review while the transfer is in progress. Letters of credit add bank fees and documentation requirements but provide payment security for both sides on high-value programs.

    Key Takeaways

    1. Mold payment milestones link each tranche to verifiable evidence — steel purchase, T1 samples, signed acceptance — not calendar dates, so both sides know what triggers payment.
    2. The final payment before shipment is the buyer’s leverage for corrections, spare parts and documentation; paying 100% upfront removes this mechanism.
    3. The quotation should specify the milestone structure, evidence requirements and re-trial terms before the deposit — so payment disputes are resolved by the contract, not by email after the fact.

    Send aCatMould the part drawing and your payment requirements, and the quotation specifies the milestone structure — deposit, T1 and acceptance — with the evidence that triggers each payment, the re-trial terms and the acceptance criteria agreed before steel is cut, so the program runs on documented milestones, not assumptions.

    Sources
    MoldMaking Technology — mold procurement and payment terms
    Plastics Technology — tooling procurement best practices
    SPE — mold procurement and contract guidance

    Sources: Plastics Technology · Plastics Technology Online · Society of Plastics Engineers (SPE) · ThomasNet