A Service–Debt–Fiscal Compatibility Framework for Availability-Payment PPPs

Background: Availability payments can support infrastructure investment where user revenues are uncertain, but a contractual payment commitment does not, by itself, reconcile service incentives, debt repayment, and fiscal affordability. Objective: This study develops a conceptual framework through a structured comparison of publicly documented arrangements in Indonesia’s Palapa Ring Western and Eastern packages, Florida’s I-595 corridor, and New Zealand’s Transmission Gully restructuring. Methods: A purposive documentary comparison, source appraisal, and mechanism coding inform the development of the conceptual model. A contrasting restructuring case examines the limitations of interpreting payment continuity as evidence of unchanged risk transfer. Results: The comparison distinguishes payment entitlement, operational exposure, and financing continuity. The Service–Debt–Fiscal Compatibility Framework (SDFCF) integrates service deductions, debt-service coverage, liquidity, and fiscal limits. An illustrative scenario involving a payment of 100 units, operating outflows of 35 units, and debt service of 50 units permits a deduction of 5 units while maintaining a minimum debt-service coverage ratio (DSCR) of 1.20. A bounded application to the I-595 corridor demonstrates how disclosed payment and reserve terms constrain appraisal, while unreported costs, covenants, and fiscal ceilings preclude a verified project-level pass/fail determination. Conclusion: Contractual schedules, certified performance, cash-flow timing, and fiscal commitments must be assessed jointly. The framework provides testable appraisal rules that require empirical validation.