Allowances vs. Contingencies in GMP Contracts: Two Different Buckets, Two Different Rules
A guaranteed maximum price (GMP) contract caps the total price the owner pays. Within that cap, the contractor's costs plus fee are reimbursable up to the GMP limit. To structure this cleanly, GMP contracts typically include two specific financial buckets: allowances and contingencies. Both hold money for things not yet fully priced at contract signing, but they work differently and get reconciled differently.
Confusing allowances and contingencies — or having contract language that treats them interchangeably — creates closeout disputes. The money in each bucket follows different rules, and at project end, who gets what depends on whether the bucket was an allowance or a contingency.
An allowance is a dollar amount set aside in the contract for a specific scope item whose final cost isn't known at contract signing. The scope is identified (appliances, signage, landscaping, a specific piece of equipment), but the specifications, brand, quantity, or selections haven't been finalized. The allowance is the GMP's placeholder for that specific line.
At some point during the project, the specifications get finalized — the owner picks the actual appliances, the landscape plan is finalized, the signage design is approved. The actual cost of that scope is then compared to the allowance:
How an allowance reconciliation works
- Actual cost < allowance — the difference is a credit to the owner (reduces the GMP)
- Actual cost = allowance — no adjustment
- Actual cost > allowance — the difference is a change order that increases the GMP
Crucially, allowance dollars are earmarked for their specific scope. Money left over in an appliance allowance doesn't get spent on something else; it flows back to the owner as a credit.
A contingency is a general reserve within the GMP to cover unforeseen conditions, minor scope changes, and risk items that aren't covered by allowances. It's not earmarked for any specific scope. The contractor has authority (within contract limits) to draw from contingency to address cost overruns, differing site conditions, or minor design changes without a formal change order.
Contingency amounts in GMP contracts typically range from 3-10% of the contract value, depending on the project's risk profile. A straightforward commercial build with complete documents might have 3-5% contingency. A historic renovation or a fast-tracked design-build might carry 7-10%. The higher risk, the higher the contingency.
At closeout, unused allowance dollars flow back to the owner. Unused contingency dollars — this is where contract terms matter — can flow either way depending on the contract:
Who keeps unused contingency at closeout
- Shared savings — most common on modern GMP contracts. Unused contingency is split between owner and contractor at a negotiated ratio (often 50/50, sometimes 25/75 or 75/25).
- Owner retains all — the GMP acts as a pure cap; any unused contingency goes back to the owner in full. Contractor has no financial incentive to preserve contingency.
- Contractor retains all — rare but occasionally seen. All unused contingency is the contractor's upside. Creates strong incentive for contractor to preserve contingency but can misalign incentives on spending decisions.
The shared savings structure is the most balanced — it aligns the owner and contractor's incentives around contingency preservation. Both parties benefit if contingency is used prudently; both absorb the cost if it's used wastefully.
At contract signing, know exactly how unused contingency is split. A contract silent on this point defaults in some jurisdictions to full-to-owner; in others to the contractor. Don't rely on default rules — put it in writing.
Allowances typically flow through a specific approval process for each selection. The owner picks the specific item, the contractor prices the actual cost, and a change order documents the difference against the allowance. Even when the final cost equals the allowance (no dollar change), the selection and acceptance is documented.
Contingency draws often have different authorization rules. The subcontract may allow the contractor to draw up to a certain dollar threshold per incident without owner approval, with larger draws requiring written authorization. Or the contract may require monthly reporting of contingency use, with the owner's right to question specific draws. Knowing the authorization rules prevents disputes later about whether specific contingency uses were legitimate.
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What typically lives in allowances
- Appliances (kitchen, laundry, specialty) not yet selected
- Signage — graphic design and fabrication not yet finalized
- Landscaping — specific plantings and hardscape elements
- Artwork, specialty lighting, custom furnishings
- Audio-visual equipment for tenant spaces
- Specialty equipment whose exact model is still being selected
What typically lives in contingency
- Unforeseen subsurface conditions discovered during excavation
- Minor design clarifications that cost money to execute
- Small scope changes the owner accepts without formal change order
- Market escalation on materials beyond bid estimates
- Minor rework that isn't clearly allocable to a specific trade's defect
- Schedule acceleration costs for minor schedule adjustments
- Risk items that were reasonably foreseen but not cleanly priced
Some GMP contracts maintain separate contingencies — an owner's contingency and a contractor's contingency. The owner's contingency is for owner-directed changes; the contractor's contingency is for construction risk items. Each has its own rules for access and reconciliation.
This split structure is cleaner than a single shared contingency because it separates "who bears the cost of what" explicitly. An owner-directed scope change draws from the owner's contingency (which they implicitly fund); a construction risk item draws from the contractor's (which the contractor manages). At closeout, each bucket gets reconciled according to its own rules.
Active management of allowances and contingencies is usually a monthly reporting item. The contractor tracks:
Monthly tracking of allowances and contingencies
- Each allowance — original amount, committed to date, remaining balance
- Each allowance selection status — pending selection, selected, priced, reconciled
- Contingency — original amount, draws to date with descriptions, remaining balance
- Contingency usage rate — the trajectory of contingency consumption relative to project completion
- Projected closeout position — estimated remaining allowance and contingency at project end
Owners often have a clause requiring monthly reporting of contingency balance and recent draws. Even without a contractual requirement, proactive monthly reporting builds trust. An owner who sees contingency use trending early has time to discuss; an owner who discovers overspending at closeout has no time and more cause for dispute.
For AP, allowances and contingencies are tracked separately on the GMP's schedule of values. Allowance items typically have a specific SOV line (one per allowance). Contingency is usually a single line. Draws against either are captured on the pay application with notation tying the draw to the specific scope item or contingency use.
At closeout, the final pay application reconciles every allowance to its actual cost, showing credits back to owner for under-runs and change orders up for over-runs. Contingency is reconciled per the contract's shared savings rules, with the closing entries clearly showing the split.
Allowances and contingencies are different tools in GMP contracts. Allowances cover specific scope items whose pricing isn't finalized; unused allowance dollars flow to the owner. Contingencies cover unforeseen conditions and general risk; unused contingency flows per the contract's rules, typically shared between owner and contractor. Keeping them separately tracked, authorized per their specific rules, and reconciled clearly at closeout avoids the disputes that plague projects with sloppy or commingled bucket management.
Written by
Marcus Reyes
Construction Industry Lead
Spent twelve years running AP at a $120M general contractor before joining Covinly. Lives in the world of AIA G702/G703, retainage schedules, and lien waiver deadlines. Writes about the construction-specific workflows that generic AP tools get wrong.
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