Refinancing Model Construction
Executive Summary
Key Takeaways
- ✓ A refinancing model should be built as a distinct model, or a clearly switchable variant of the original financial close model, not a manual overlay on top of the original debt schedule.
- ✓ The refinancing switch, replacing the original facility's terms with the new facility's terms from the refinancing date forward, should be a single controlled toggle, not duplicated logic maintained in parallel.
- ✓ Refinancing typically increases achievable gearing, since a de-risked, operational project supports a higher debt quantum at the same coverage ratios than the original construction-risk-bearing financing did.
- ✓ Refinancing gain sharing mechanics, splitting the incremental value released by refinancing between sponsors and, in some structures, the original lenders, should be modelled explicitly where the financing documents specify one.
- ✓ A par refinancing repays the original facility at its outstanding balance; a discounted refinancing repurchases it below par, and the two produce materially different sponsor value outcomes that a refinancing model should be able to represent separately.
Institutional Definition¶
Building a refinancing model is the process of constructing a controlled representation of a project finance transaction's debt structure being replaced with new terms at a defined future date, typically once the project has de-risked following construction completion or an established operating track record, including the switch mechanics, any refinancing gain sharing provision, and the distinction between a par and a discounted refinancing outcome.
Why Refinancing Warrants Its Own Construction Discipline¶
A refinancing model is not simply the original financial close model with updated interest rate assumptions. Debt terms, tenor, achievable gearing, and often the covenant package itself typically change materially at refinancing, since the project being refinanced carries materially less risk than at original financial close, having completed construction and, frequently, established a stable operating track record. Manually overlaying new terms onto the original model's debt schedule risks leaving assumptions from the original, higher-risk financing structure inconsistently in place.
Building the Refinancing Switch¶
The transition from the original facility's terms to the new facility's terms should be built as a single controlled toggle cell, driven by the refinancing date, that flows through consistently to every downstream calculation, debt schedule, covenant testing, and cash waterfall, from that date forward.
IF Period ≥ Refinancing Date
→ Debt Terms = New Facility (rate, tenor, covenant package, gearing)
ELSE
→ Debt Terms = Original Facility
This should be a single switch controlling one consistent set of downstream formulas, not two parallel, independently maintained debt schedules (pre-refinancing and post-refinancing) that must be kept manually consistent as the model is revised.
Increased Gearing at Refinancing¶
Because a de-risked, operational project supports a higher debt quantum than an equivalent construction-risk-bearing project at the same DSCR and LLCR covenant levels, refinancing typically increases achievable gearing. The refinancing model should re-run the debt sculpting calculation against the project's now-established (or re-forecast) operating cash flow, sized to the new facility's covenant requirements, rather than simply repeating the original debt quantum with a lower interest rate.
Refinancing Gain Sharing¶
Where the original financing documents specify a refinancing gain sharing provision, splitting the incremental value released by refinancing (typically additional debt proceeds beyond the amount required to repay the original facility, or the value of a reduced financing cost) between sponsors and, in some structures, the original lenders, this should be modelled as an explicit calculation:
Refinancing Gain = New Debt Proceeds − Original Facility Repayment Amount − Refinancing Transaction Costs
Sponsor Share = Refinancing Gain × Sponsor Sharing Percentage (per financing documents)
Lender Share = Refinancing Gain × Lender Sharing Percentage (per financing documents)
The specific sharing percentages and any conditions attached to them (for example, a sharing mechanism that only applies above a defined gain threshold) are transaction-specific and should be modelled exactly as the financing documents define, not as a generic assumption.
Par vs. Discounted Refinancing¶
Par refinancing. The original facility is repaid at its full outstanding balance, funded by proceeds from the new facility. This is the standard case and the one the mechanics above assume by default.
Discounted refinancing. The original facility is repurchased below its par outstanding balance, typically because the original debt is trading at a discount in the secondary market (reflecting, for example, a period of underperformance now resolved, or general market conditions at the time of original issuance). A discounted refinancing produces a different, generally more favourable, sponsor value outcome than a par refinancing of the same nominal facility, since less new debt proceeds are required to retire the original facility.
A refinancing model should be able to represent both scenarios distinctly, since the choice between them, where a discounted repurchase is actually available, has a direct effect on the transaction's economics.
Common Errors¶
Error 1 — Manual Overlay Rather Than a Controlled Switch¶
New facility terms entered as a manual overlay on top of the original debt schedule, rather than a single controlled toggle, risking inconsistent assumptions from the original financing structure remaining in place.
Error 2 — Gearing Not Re-Sized¶
The refinancing model repeats the original debt quantum with only the interest rate updated, rather than re-running debt sculpting against the project's now-established cash flow and the new facility's covenant requirements.
Error 3 — Gain Sharing Omitted¶
A refinancing gain sharing provision specified in the financing documents not represented in the model at all, misstating the sponsor's actual retained value from the refinancing.
Error 4 — Par Assumed Without Testing the Discounted Alternative¶
The model only represents a par refinancing scenario, without testing whether a discounted repurchase is available and, if so, its more favourable economics.
Audit Checks¶
Switch control check. Confirm the refinancing transition is controlled by a single toggle cell, tested by changing the refinancing date and confirming a consistent response across every downstream calculation.
Re-sizing check. Confirm the new facility's debt quantum is derived from a fresh debt sculpting calculation against the project's current cash flow position and covenant requirements, not simply carried over from the original financing.
Gain sharing check. Where specified in the financing documents, confirm refinancing gain sharing is modelled explicitly and the sharing percentages are cross-referenced against the documents.
Par/discounted distinction check. Confirm the model can represent both a par and a discounted refinancing scenario where relevant, and that the two produce visibly different sponsor value outcomes.
Best Practices¶
| Best Practice | Why It Matters |
|---|---|
| Build the refinancing transition as a single controlled toggle | Prevents inconsistent assumptions from the original financing structure remaining in place after refinancing |
| Re-run debt sculpting against current, de-risked cash flow | Correctly captures the increased debt capacity refinancing typically unlocks |
| Model any refinancing gain sharing provision explicitly | Accurately represents the sponsor's actual retained value from the refinancing |
| Represent both par and discounted refinancing scenarios where relevant | Captures the full range of value outcomes available at the refinancing decision point |
Further Reading¶
- IFC, Project Finance in Developing Countries, International Finance Corporation
Continue Reading¶
Prerequisites¶
- Project Finance Model Audit — the parent pillar
- Debt Sculpting Mechanics
Related Glossary¶
Related Checklists¶
Related Products¶
- Financial Model Audit Engine (FMAE) — deterministic structural auditing referenced throughout this guide
How OXXON tests thisRun a free structural check with FMAE
Frequently Asked Questions
Why does a refinancing warrant its own model rather than reusing the financial close model?
Because the debt terms, tenor, gearing, and often the covenant package change materially at refinancing, and manually overlaying new terms on the original model's debt schedule risks leaving inconsistent assumptions from the original financing structure in place.
How should the switch from the original facility to the new facility be built?
As a single controlled toggle cell, driven by the refinancing date, that replaces the original facility's terms with the new facility's terms from that date forward across every downstream calculation, not as duplicated logic maintained separately for pre- and post-refinancing periods.
Why does refinancing typically increase achievable gearing?
Because a project that has completed construction and established an operating track record carries materially less risk than at original financial close, allowing a higher debt quantum to be supported at the same DSCR and LLCR covenant levels the lender requires.
What is refinancing gain sharing?
A mechanism, where specified in the financing documents, that splits the incremental value released by refinancing, typically the increase in debt proceeds or reduction in financing cost, between sponsors and, in some structures, the original lenders.
What is the difference between a par and a discounted refinancing?
A par refinancing repays the original facility's outstanding balance in full. A discounted refinancing repurchases the original facility below its par value, typically because the original debt is trading at a discount in the secondary market, producing a different sponsor value outcome that the two scenarios should be modelled to distinguish.
Related Articles
Refinancing Model
A refinancing model is a financial model built to analyse the economics of replacing existing debt with new debt under revised terms. In a project finance or infrastructure context, a refinancing replaces the original construction-phase or early-operational-phase debt with new debt that reflects the reduced risk profile of an operating asset — typically at a lower margin, a longer tenor, or a higher principal amount, or some combination of these. A refinancing model runs the project's financial projections under the proposed new debt terms, calculates the revised DSCR, LLCR, and equity returns, and compares these against the original financing to quantify the benefit of the refinancing.
Refinancing Gain Sharing
Refinancing gain sharing is a contractual mechanism, specified in some project finance financing documents, that splits the incremental value released by a refinancing, typically additional debt proceeds beyond the amount required to repay the original facility, or the value of a reduced financing cost, between the project sponsors and, in some structures, the original lenders. It reflects the fact that a project's reduced risk profile at refinancing, and therefore its increased refinancing capacity, is attributable at least partly to the original lenders' financing of the higher-risk construction and early operating phases.
Debt Sculpting Mechanics in Project Finance Models
Debt sculpting is a technique used in project finance financial models to derive the periodic debt repayment schedule from the projected cash flows available for debt service, rather than from a fixed amortisation schedule. The repayment in each period is sized such that the debt service coverage ratio (DSCR) in that period equals a defined target, or such that a defined proportion of available cash flow is applied to debt service. Sculpting shapes the repayment profile to match the project's cash flow profile, front-loading repayment in high-cash-flow periods and reducing repayment in lower-cash-flow periods, which increases the project's ability to service debt throughout the loan life.
Gearing Ratio
The gearing ratio, also called the debt-to-equity ratio or leverage ratio depending on how it is expressed, is the proportion of a project finance transaction's total funding provided by debt rather than equity. It is read directly off the sources and uses statement as total debt sources divided by total sources (debt-to-total gearing) or total debt divided by total equity (debt-to-equity gearing), and is one of the central negotiated parameters of a project finance transaction, since it directly determines how much of the project's risk is borne by lenders versus sponsors.
Project Finance Model Build Checklist
This checklist is a construction-sequence guide for the model builder, walking through the order in which a project finance model's core modules should be built and the specific construction discipline each one requires, sources and uses reconciliation, construction-period funding mechanics, debt sculpting, reserve accounts, and the cash waterfall. It is distinct from the pre-financial-close audit checklist and the lender model review checklist, both of which verify a model that already exists; this checklist is used while the model is being built.