# CADS: What Cash Available for Debt Service Means in Finance

Published: 2026-02-24
Author: Warren Team
URL: https://www.heywarren.com/blog/what-does-cads-stand-for

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CADS stands for **Cash Available for Debt Service**, the amount of cash a project, company, or borrowing entity generates that is available to make scheduled debt payments (principal and interest) in a given period. CADS is a core metric in project finance, infrastructure lending, and leveraged buyouts because it shows, in actual cash terms, not accounting income, whether a borrower can service its debt. Lenders use CADS to size loans, set financial covenants, and assess credit risk. If CADS falls below scheduled debt service, the project is technically unable to service its debt from operations alone. Understanding CADS is essential for anyone structuring, underwriting, or monitoring project finance or corporate debt.

## How CADS Is Calculated

CADS is derived from the project's or company's operating cash flows, after accounting for all cash obligations that rank senior to debt service:

![CADS is derived by subtracting taxes, working capital changes, and maintenance capex from EBITDA, leaving cash available before debt service.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20875%20125%22%20width%3D%22875%22%20height%3D%22125%22%20role%3D%22img%22%3E%3Ctitle%3EFlow%20diagram%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%2230%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22115%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EEBITDA%3C%2Ftext%3E%3Ctext%20x%3D%22115%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3E%244%2C500%2C000%3C%2Ftext%3E%3Cline%20x1%3D%22205%22%20y1%3D%2262.5%22%20x2%3D%22237%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22244%2C62.5%20235%2C57.5%20235%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22245%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22330%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ELess%20Taxes%20%26amp%3B%20WC%3C%2Ftext%3E%3Ctext%20x%3D%22330%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3E%E2%88%92%24800%2C000%3C%2Ftext%3E%3Cline%20x1%3D%22420%22%20y1%3D%2262.5%22%20x2%3D%22452%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22459%2C62.5%20450%2C57.5%20450%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22460%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22545%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ELess%20Maint.%20Capex%3C%2Ftext%3E%3Ctext%20x%3D%22545%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3E%E2%88%92%24400%2C000%3C%2Ftext%3E%3Cline%20x1%3D%22635%22%20y1%3D%2262.5%22%20x2%3D%22667%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22674%2C62.5%20665%2C57.5%20665%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22675%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22760%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ECADS%3C%2Ftext%3E%3Ctext%20x%3D%22760%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3E%243%2C300%2C000%3C%2Ftext%3E%3C%2Fsvg%3E)

*CADS is derived by subtracting taxes, working capital changes, and maintenance capex from EBITDA, leaving cash available before debt service.*

**Basic CADS formula**:

> CADS = Operating Cash Inflows − Operating Cash Expenses − Taxes − Changes in Working Capital − Capital Maintenance Expenditures − Senior Obligations (if any)

Or, starting from EBITDA:

> CADS = EBITDA − Taxes Paid − Changes in Working Capital − Maintenance Capex − Senior Obligations

Note that **CADS excludes growth capital expenditures**, money spent on expanding capacity, because those are discretionary. It includes only maintenance capex needed to keep the revenue-generating assets operational.

**Simplified example**:
- Revenue: $10,000,000
- Operating expenses: −$5,500,000
- EBITDA: $4,500,000
- Taxes paid: −$600,000
- Working capital change: −$200,000
- Maintenance capex: −$400,000
- **CADS: $3,300,000**
- Annual debt service (P+I): $2,500,000
- DSCR: 3,300,000 / 2,500,000 = **1.32x**

## CADS vs. DSCR: How They Relate

CADS and the **Debt Service Coverage Ratio (DSCR)** are tightly linked:

![CADS of $3.3M covers annual debt service of $2.5M, producing a DSCR of 1.32x, above the typical 1.20x minimum covenant threshold.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20210%22%20width%3D%22800%22%20height%3D%22210%22%20role%3D%22img%22%3E%3Ctitle%3EComparison%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Ctext%20x%3D%22230%22%20y%3D%2257.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ECADS%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%2225%22%20width%3D%22450%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22702%22%20y%3D%2257.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%232563eb%22%3E%243.3M%3C%2Ftext%3E%3Ctext%20x%3D%22230%22%20y%3D%22152.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDebt%20Service%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%22120%22%20width%3D%22340.9090909090909%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%237c3aed%22%2F%3E%3Ctext%20x%3D%22592.9090909090909%22%20y%3D%22152.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%237c3aed%22%3E%242.5M%3C%2Ftext%3E%3C%2Fsvg%3E)

*CADS of $3.3M covers annual debt service of $2.5M, producing a DSCR of 1.32x, above the typical 1.20x minimum covenant threshold.*

| Metric | Formula | What It Shows |
|---|---|---|
| CADS | Cash flow available for debt | Absolute dollar amount available |
| Debt service | Principal + interest due in period | The obligation |
| DSCR | CADS ÷ Debt service | Coverage ratio |

The DSCR tells lenders how many times over CADS covers debt service. A DSCR of 1.0x means CADS exactly covers debt service, no margin. Most project finance lenders require:
- **Minimum DSCR covenant**: 1.20x–1.30x (project fails covenant if CADS falls to this level)
- **Sculpted DSCR**: In some project finance structures, the debt repayment schedule is designed ("sculpted") so that DSCR is constant across all periods, regardless of variable cash flows

## CADS in Project Finance

CADS is most prominently used in **project finance**, lending to a special purpose vehicle (SPV) where debt is serviced solely by project cash flows, with no recourse to a parent company's balance sheet.

**Typical project finance uses**:
- Power plants (wind, solar, gas, coal)
- Infrastructure (toll roads, airports, ports)
- Pipelines and LNG terminals
- Real estate development SPVs

In project finance, the lender models CADS over the entire life of the loan, often 15–25 years, under base, upside, and downside scenarios. Key risks to CADS:

- **Revenue risk**: Lower-than-projected energy prices, tolls, or occupancy
- **Operating cost overruns**: Higher maintenance costs than modelled
- **Volume/throughput risk**: Less traffic, less gas flowing through the pipeline
- **Tax risk**: Changes in depreciation rules or tax rates

## CADS vs. Free Cash Flow (FCF)

Both CADS and FCF measure cash generation, but with different purposes:

**Free Cash Flow (FCF)**:
- = Operating cash flow − All capex (maintenance + growth)
- Used by equity investors to assess returns
- After debt service, measures what's left for shareholders

**CADS**:
- = Operating cash flow − Maintenance capex − Taxes − Working capital changes
- Used by **lenders** to assess debt serviceability
- Before debt service, measures what's available to service debt

CADS is a **pre-debt-service** measure; FCF is a **post-debt-service** measure. A project can have positive CADS but negative FCF if the growth capex is large.

## Financial Covenants Based on CADS

Lenders embed CADS-based covenants in loan agreements to protect themselves:

![Lenders embed tiered CADS covenants that escalate from cash traps to sweeps to technical default as DSCR deteriorates.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20760%20211%22%20width%3D%22760%22%20height%3D%22211%22%20role%3D%22img%22%3E%3Ctitle%3EHierarchy%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%22300%22%20y%3D%2220%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22380%22%20y%3D%2254%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22white%22%3ECADS%20Covenants%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20110%20105.5%20L%20110%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%2230%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22110%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDSCR%20%26lt%3B%201.20x%3C%2Ftext%3E%3Ctext%20x%3D%22110%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3ECash%20trap%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20290%20105.5%20L%20290%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22210%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22290%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDSCR%20%26lt%3B%201.10x%3C%2Ftext%3E%3Ctext%20x%3D%22290%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3ECash%20sweep%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20470%20105.5%20L%20470%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22390%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22470%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDSCR%20%26lt%3B%201.00x%3C%2Ftext%3E%3Ctext%20x%3D%22470%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3ETechnical%20default%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20650%20105.5%20L%20650%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22570%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22650%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDSRA%3C%2Ftext%3E%3Ctext%20x%3D%22650%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3E6%E2%80%9312%20mo.%20buffer%3C%2Ftext%3E%3C%2Fsvg%3E)

*Lenders embed tiered CADS covenants that escalate from cash traps to sweeps to technical default as DSCR deteriorates.*

**Minimum DSCR covenant**: If CADS / debt service falls below 1.10x–1.20x for any measurement period, the borrower is in technical default. This triggers lender remedies: cash sweeps, cash traps, restriction on distributions.

**Cash trap**: When DSCR falls below a threshold (e.g., 1.20x), all excess CADS above debt service is trapped in a restricted account (the debt service reserve account) rather than distributed to equity investors.

**Cash sweep**: If DSCR falls below 1.10x, 100% of CADS above minimum debt service is applied to accelerated principal repayment.

**Debt service reserve account (DSRA)**: Funded with 6–12 months of debt service from CADS at financial close; acts as a buffer if CADS temporarily falls short.

## Why CADS Matters for Lenders and Investors

**For lenders**:
- Determines how much debt a project can safely support (debt sizing)
- Sets the financial covenant framework
- Identifies early warning signs of deteriorating credit

**For equity investors**:
- CADS tells you what's available before you get paid, if CADS is tight, distributions to equity are at risk
- Stress-test CADS under downside scenarios to understand equity risk

**For project companies**:
- Manage CADS by controlling operating costs and capital spending
- Optimise timing of maintenance capex to smooth CADS across periods
- Maintain DSRA to avoid covenant breaches during temporary cash flow dips

## Authoritative Sources

For deeper background and primary-source data on this topic, the following authoritative sources are useful starting points:

- [IRS](https://www.irs.gov/)
- [SEC](https://www.sec.gov/)

## Conclusion

CADS, Cash Available for Debt Service, is the fundamental measure of a project's or company's ability to service its debt from operations. As the numerator of the DSCR, it determines loan sizing, covenant thresholds, and distributions to equity. Lenders model CADS across decades of scenarios; covenant breaches trigger cash traps and accelerated repayment. Whether you're structuring a project finance deal, underwriting a leveraged loan, or evaluating an infrastructure investment, CADS is the number that defines whether the debt is safe. For related project and corporate finance metrics, see our guides on [calculating EBIT](/blog/calculating-ebit) and [formula for operating income](/blog/formula-for-operating-income).

Warren at [heywarren.com](https://heywarren.com) helps project finance professionals, lenders, and infrastructure investors understand cash flow metrics, debt structuring, and financial covenant frameworks.

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## Related Reading

**More from Warren**:
- [Calculating EBIT: Formula, Examples, and How Lenders Use It](/blog/calculating-ebit)
- [Formula for Operating Income: How to Calculate It and Why It Matters](/blog/formula-for-operating-income)
- [Profitability Ratios in Accounting: Margins, Returns, and What They Tell You](/blog/profitability-ratios-in-accounting)

**Authoritative sources**:
- [World Bank, Project Finance Reference Guide](https://www.worldbank.org/en/topic/publicprivatepartnerships)
- [IMF, Infrastructure Finance](https://www.imf.org/en/Publications/Staff-Discussion-Notes)
- [CFA Institute, Fixed Income Analysis](https://www.cfainstitute.org/en/membership/professional-development/refresher-readings/introduction-fixed-income-valuation)