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Magnus Fiscus helps developers and sponsors secure strategic debt and equity financing — from $5M to $350M+ — with a focus on real estate, infrastructure, and capital-intensive projects.


Real Estate Capital Advisory & Infrastructure Financing Experts

Magnus Fiscus

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What is a Capital Stack?

The capital stack refers to the hierarchy of funding sources used to finance a company or project. It outlines who gets paid first and who bears the most risk. Typically, this structure is divided into equity and debt, with further subdivisions that impact rights, returns, and responsibilities.

At its core, the capital stack answers two questions:

Who has control?

Who gets paid—and when—if things go wrong?

The Four Layers of a Typical Capital Stack

While every deal is different, the capital stack is commonly broken down into the following layers:

Senior Debt

First in line for repayment

Secured by collateral

Lowest risk, lowest return

Often provided by banks

Mezzanine Debt

Sits between senior debt and equity

May include warrants or equity kickers

Higher return than senior debt, but riskier

Preferred Equity

Equity with special privileges (e.g., priority dividends)

No voting rights typically

Higher return expectations than debt

Common Equity

Last in line, but holds voting control

Highest risk, highest potential reward

Often includes founders, VCs, or shareholders

The order defines priority in payouts—especially critical during liquidation or sale events.

The Four Layers of a Typical Capital Stack

While every deal is different, the capital stack is commonly broken down into the following layers:

Risk, Return & Control: The Core Tradeoffs

The composition of your capital stack determines the risk-reward profile for both the business and its investors. Here's how:

https://quickchart.io/chart?c={ type:'bar', data:{ labels:['Senior Debt','Mezzanine Debt','Preferred Equity','Common Equity'], datasets:[ { label:'Risk Level', data:[1,2,3,4], backgroundColor:'rgba(54, 162, 235, 0.6)' }, { label:'Expected Return (%)', data:[5,12,18,25], backgroundColor:'rgba(255, 206, 86, 0.6)' }, { label:'Control Level', data:[0,1,2,4], backgroundColor:'rgba(75, 192, 192, 0.6)' } ] }, options:{ scales:{ y:{ beginAtZero:true, title:{ display:true, text:'Relative Scale' } } }, plugins:{ title:{ display:true, text:'Capital Stack: Risk, Return & Control by Layer' }, legend:{ position:'bottom' } } } }

Too much debt? You risk insolvency.
Too much equity? You dilute ownership and reduce ROI.

How Capital Stack Impacts Decision-Making

Your capital stack isn’t just financial—it shapes who has influence at the table:

Governance: Equity holders (especially common equity) typically control strategic decisions.

Financial Covenants: Debt agreements may include clauses that restrict operational flexibility.

Exit Planning: The payout waterfall impacts investor returns and motivations during M&A or IPO.

A misaligned capital stack can lead to conflicting incentives, delayed decisions, or even legal disputes.

Capital Stack in Real Estate vs Private Equity

Real Estate

Often involves complex layering of senior debt, mezzanine loans, and equity partners

Loan-to-Value (LTV) ratios are key metrics

Stack is optimized to maximize internal rate of return (IRR) while minimizing cash equity

Private Equity

Focus on leverage optimization (using debt to increase returns)

PE firms may use preferred equity structures to protect downside while gaining upside exposure

The capital stack also dictates control over portfolio companies

Both industries use capital stack structuring as a value creation lever.

Common Capital Stack Mistakes to Avoid

Overleveraging: Too much debt increases bankruptcy risk.

Underutilizing Equity: Over-reliance on equity dilutes founders and reduces control.

Mismatched Capital to Business Stage: Startups shouldn’t use complex debt structures prematurely.

Ignoring Cost of Capital: Cheapest capital isn't always the best—consider strategic value too.

Real Estate

Often involves complex layering of senior debt, mezzanine loans, and equity partners

Loan-to-Value (LTV) ratios are key metrics

Stack is optimized to maximize internal rate of return (IRR) while minimizing cash equity

Private Equity

Focus on leverage optimization (using debt to increase returns)

PE firms may use preferred equity structures to protect downside while gaining upside exposure

The capital stack also dictates control over portfolio companies

Both industries use capital stack structuring as a value creation lever.

Common Capital Stack Mistakes to Avoid

Overleveraging: Too much debt increases bankruptcy risk.

Underutilizing Equity: Over-reliance on equity dilutes founders and reduces control.

Mismatched Capital to Business Stage: Startups shouldn’t use complex debt structures prematurely.

Ignoring Cost of Capital: Cheapest capital isn't always the best—consider strategic value too.

How to Build a Strategic Capital Stack

Creating a balanced capital stack means aligning structure with strategy. Consider the following:

✅ Match Capital Type to Growth Stage

Early stage: More equity, less debt

Growth stage: Introduce structured debt

Mature: Optimize cost of capital via refinancing

✅ Consider Investor Expectations

Are your investors patient capital or seeking quick returns?

✅ Prioritize Flexibility

Build in structures that allow for refinancing, exits, or recapitalizations

✅ Scenario Modeling

Use cash flow models and SEMrush-like forecasting tools to test how your stack performs under:

Revenue slowdowns

Interest rate hikes

Exit delays