Negotiating Offtake Agreements
the must-cover terms for secure, profitable mineral supply
1 Agree on the commercial backbone first
| Term | What you must pin down | Tips for leverage |
|---|---|---|
| Product & grade | Exact mineral name, HS code, minimum / maximum assay limits (e.g., “Sb ≥ 48 %, As ≤ 0.15 %”) | Make the Certificate of Analysis an integral schedule; deviations trigger price re-calculations, not re-negotiation |
| Annual volume + tolerance | Total tonnes per contract year (±10 % common) plus monthly delivery programme | Ask for “delivery windows” (e.g., 10 days) — delays inside the window are not default |
| Contract tenor | Spot, 1 y roll-over, 3–5 y strategic | Longer tenor wins better unit price; insist on annual price-review clause tied to index |
2 Price-setting models
| Model | How it works | When to use |
|---|---|---|
| Fixed flat price | USD X t⁻¹ for full term | Short runs, stable markets (e.g., talc fillers) |
| Index-linked | “LME 3-mo. average × payable % − discount” | Cu/Au/Sb concentrates exposed to exchange price swings |
| Tiered payability | Sb payable = 85 % < 40 % Sb, 90 % 40–50 % Sb, 95 % > 50 % Sb | Encourages supplier to upgrade grade |
| Floor / cap collar | Price floats with index but cannot go outside band | When both parties must budget long-term capex |
Always attach a worked example invoice in an annex.
3 Quality & penalties matrix
Include a table: each impurity (As, Hg, moisture, LOI) gets ▸ threshold ▸ penalty $ per excess unit ▸ rejection level.
Penalty math happens before payable metal or discounts, so its impact is transparent.
4 Delivery & risk hand-off
Incoterm (FOB, CFR, DAP, Ex-Works) + named place.
Shipment schedule: number of lots per year, minimum lot size.
Failure to ship/receive: liquidated damages as USD X t⁻¹ of undelivered tonnage.
5 Payment security
| Option | Typical split | Notes |
|---|---|---|
| Irrevocable LC | 110 % invoice value, sight or usance 30 d | Protects seller cash-flow; buyer pays LC fees |
| CAD / DP (Cash-against-Documents) | 10 – 20 % pre-payment, balance on BL copy | Use parent guarantee or insurance for remaining risk |
| Open account + performance bond | 0 % advance; seller posts 5–10 % bond | Acceptable when buyer is investment-grade |
6 Security package
Performance bond: callable on quality / delivery failure.
Parent or bank guarantee if counter-party SPV is thin.
Title retention: ownership passes only after full payment or assay umpire.
7 Operational clauses that save headaches
Sampling & umpire lab — name two primary labs and one umpire; chain-of-custody rules.
Force Majeure — exclude licences lost, sanctions, or price collapse (these are business risks, not FM).
Take-or-Pay / Ship-or-Pay — defines financial remedy when either side misses volume.
Change-in-law — share incremental taxes/duties, but cap at e.g. 3 % of contract price.
Price-review trigger — renegotiate if index moves ±20 % over any rolling 3-month period.
8 Dispute-resolution ladder
Senior commercial managers meet within 15 days.
ICC or LCIA arbitration, seat and law chosen up front (Dubai, Singapore, London common).
Awards enforceable via New York Convention.
9 Negotiation cheat-sheet
| Point for buyer to press | Point for seller to press |
|---|---|
| Wider quality tolerance, smaller penalties | Narrow assays, higher bonus for high grade |
| Shorter laytime, demurrage at market rates | Free demurrage days or split cost 50/50 |
| Payment on provisional assay | Final settlement on umpire assay with prompt advance |
10 Key take-aways
Nail grade, volume, and price formula first; all other clauses flow from those.
Convert every technical spec into a number → penalty → rejection line.
Use performance bonds, LCs, or guarantees to neutralise counter-party default risk.
Refresh price annually or via collar to prevent windfall winners and losers.
Detail the sampling, assay, and dispute path — ambiguity here is the seed of most litigation.
Lock these elements in writing, and your offtake agreement will be financeable by banks and resilient to market swings.