The Fluctuation Defence - Maris Interiors

The Fluctuation Defence

24th October, 2025

PROTECTING CAPITAL IN AN INFLATIONARY MARKET

Historically, project sponsors demanded absolute fixed-price contracts where the contractor absorbed the entire risk of material inflation.

In the highly volatile market of 2025 and 2026, enforcing this legacy mindset is financially dangerous. When project owners attempt to force contractors to accept total pricing risk in an inflationary market, they trigger two disastrous outcomes.

First, to survive, the contractor will heavily pad their tender submission with massive, hidden risk contingencies. This means the client pays a premium for inflation that may not even occur.

Second, if the contractor wins the bid without sufficient contingency, the subsequent spike in raw material costs will completely wipe out their razor-thin profit margin. With over 4,000 construction companies entering insolvency in 2024, this scenario frequently ends in catastrophic contractor default mid-project.

To secure genuine cost certainty today, leadership teams must abandon rigid legacy thinking and embrace transparent contractual mechanisms for managing economic volatility.

THE MARIS METHODOLOGY:

We believe that cost certainty is achieved through proactive supply chain management rather than burying risks in unfair contract terms. We defend your capital using three distinct pillars:

  • Pillar 1: Supply Chain Priming
    We leverage our debt-free financial stability to execute early procurement strategies. By engaging the supply chain during the design phase, we pre-order long-lead items like specialist glazing and mechanical ventilation units long before they are required on site.
  • Pillar 2: Transparent Indexing
    For highly complex or multi-year projects, we advocate for the intelligent use of formal fluctuation provisions. We meticulously document the “Base Date” of the contract, ensuring that any subsequent claims for increased material costs are rigorously validated against verifiable market indices.
  • Pillar 3: Financial Shielding
    By formally incorporating these mechanisms into the open-book contract, we eliminate the need for the contractor to bury hidden risk premiums within their tender pricing, providing you with a highly competitive initial base price.

THE COMMERCIAL DIRECTOR’S CORNER:

NAVIGATING FLUCTUATION MECHANISMS

Commercial leaders must understand the specific legal mechanisms available to manage cost volatility. Blindly striking out fluctuation clauses during contract negotiations is a false economy. Refusing to share inflationary risk forces the supply chain into a defensive posture, which inevitably drives up the initial tender price through massive hidden contingencies.

The recent publication of the JCT 2024 suite has reintroduced fluctuation provisions to prominence, offering three primary options alongside the NEC equivalent:

  • JCT Option A (Taxes and Tariffs): This is the default provision. It allows the contract sum to be adjusted strictly for changes in statutory contributions, levies, and taxes. While it does not cover general material cost increases, it is a highly effective shield for managing the risks of sudden geopolitical tariff uplifts on imported goods.
  • JCT Option B (Labour and Materials): This offers a broader shield. It allows the contract sum to be adjusted for actual market-driven changes in the cost of labour, materials, fuel, and electricity. If a shift in the market price occurs from the agreed contract base date, the net amount of that shift is calculated and included in the contractor’s application for payment.
  • JCT Option C (Formula Adjustment): This provides a sophisticated, formula based adjustment using standard industry price indices published by the BCIS. It is highly complex but provides a mathematically transparent mechanism for large-scale projects.
  • NEC4 Secondary Option X1: For projects utilising the NEC4 Engineering and Construction Contract, Option X1 provides the mechanism for price adjustment for inflation. If Option X1 is omitted, the contractor is forced to take absolute risk under standard lump-sum options.

Incorporating a carefully selected fluctuation provision ensures the contractor can bid aggressively low, secure in the knowledge they are protected from ruinous macroeconomic shocks.

MARIS TOOLS:

THE VOLATILITY DEFENCE FRAMEWORK

Deploy these essential diagnostic instruments to maintain strict financial governance when evaluating inflationary risks.

  • The Baseline Index Tracker: A commercial tracking tool that logs the exact market price of core commodities at the agreed contract base date to ensure any future fluctuation claims are measured with absolute mathematical precision.
  • The Tariff Risk Matrix: A proactive evaluation of the supply chain identifying which specific materials are imported and therefore vulnerable to sudden geopolitical trade tariffs or cross-border taxation changes.
  • The Early Works Procurement Protocol: A contractual mechanism used to authorise the purchase of highly volatile materials before the main construction contract is signed to lock in prices and bypass future inflation.

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