Blog · Finance metrics and formulas · Finance and FP&A teams
Capital cash flow measures business cash available to debt and equity providers, including the interest tax shield. Reconcile it from operating assumptions and a financing schedule, then distinguish it from capital expenditures and actual distributions.
Capital cash flow is the business cash available to debt and equity providers, including the tax benefit of deductible interest. In a simple company workbook, it equals unlevered free cash flow plus the interest tax shield. Reconcile that amount to financing flows before treating it as cash actually paid out.
The word capital refers to the providers of financing. The measure combines the cash available to creditors and owners after the business funds its operations and reinvestment. Richard Ruback's Harvard Business School note on capital cash flow places the interest tax benefit inside the cash-flow calculation.
Capital cash flow = Unlevered free cash flow + Interest tax shield
Unlevered free cash flow = EBIT × (1 − Tax rate) + Depreciation and amortization − Capital expenditures − Increase in operating working capital
Interest tax shield = Deductible interest × Applicable tax rate, when the deduction produces a current cash-tax saving.
EBIT is earnings before interest and taxes. Unlevered free cash flow calculates taxes as though the company had no interest deduction. Adding the usable shield replaces that hypothetical tax charge with the lower charge associated with financing.
This is a financial-modeling convention, rather than a separately labeled line required in a cash-flow statement. State it at the top of the workbook. The broader free cash flow definition covers a related measure, but a reported operating-cash-flow-minus-capex figure can already reflect interest payments and taxes. Check its starting point before adding a shield.
Use a single entity, period and currency. Start with the operating forecast or closed financial statements, the fixed-asset schedule, operating working-capital balances, the debt schedule and the tax calculation. Keep the cash paid for assets separate from depreciation expense.
Each input needs a source reference: account, transaction identifier, schedule line or documented assumption. Operating working capital should exclude cash and interest-bearing debt in this calculation. Its increase is a use of cash. Explain any difference between the balance-sheet movement and the cash movement, such as an acquisition or currency translation.
Consider a hypothetical US manufacturer for one fiscal year. All amounts are USD. The supplied tax schedule assumes a 25% current cash-tax rate and full use of the interest deduction. There are no deferred taxes, losses, noncash interest or other cash-flow adjustments.
| Workbook input | Amount (USD) | Source in the workbook |
|---|---|---|
| EBIT | 1,000,000 | Operating earnings schedule |
| Cash interest, also the deductible interest expense | 120,000 | Debt and tax schedules |
| Depreciation and amortization | 100,000 | Fixed-asset schedule |
| Cash capital expenditures | 200,000 | Asset payment register |
| Increase in operating working capital | 60,000 | Receivables, inventory and operating payables rollforward |
The assumed tax rate is an example input, not a statement of a statutory rate. Tax owns that assumption; FP&A should not infer it from the cash interest line alone.
The workbook can calculate capital cash flow through either operating earnings or net income. Both paths must use the same interest, tax and reinvestment assumptions.
| Step | Calculation | Result (USD) |
|---|---|---|
| Taxes without interest deduction | 1,000,000 × 25% | 250,000 |
| Unlevered after-tax operating earnings | 1,000,000 − 250,000 | 750,000 |
| Unlevered free cash flow | 750,000 + 100,000 − 200,000 − 60,000 | 590,000 |
| Interest tax shield | 120,000 × 25% | 30,000 |
| Capital cash flow | 590,000 + 30,000 | 620,000 |
| Taxable earnings after interest | 1,000,000 − 120,000 | 880,000 |
| Cash taxes with interest deduction | 880,000 × 25% | 220,000 |
| Net income | 880,000 − 220,000 | 660,000 |
| Equity cash before net borrowing | 660,000 + 100,000 − 200,000 − 60,000 | 500,000 |
| Cross-check: add back cash interest | 500,000 + 120,000 | 620,000 |
The difference between hypothetical taxes of $250,000 and cash taxes of $220,000 is $30,000. That is the same shield added to unlevered free cash flow. All example calculations are exact to whole dollars; no rounding is needed.
The $500,000 equity amount precedes net debt repayment. It is not yet the amount paid to shareholders. The financing schedule supplies the missing bridge.
Assume opening debt is $800,000. The company borrows and repays cash as shown below, raises no equity and distributes all remaining available equity cash. Cash balances are unchanged.
| Financing component | Amount or calculation (USD) |
|---|---|
| New debt proceeds | 100,000 |
| Principal repaid | 180,000 |
| Closing debt | 800,000 + 100,000 − 180,000 = 720,000 |
| Net cash to creditors | 120,000 + 180,000 − 100,000 = 200,000 |
| Cash available to equity after net borrowing | 500,000 + 100,000 − 180,000 = 420,000 |
| Dividends paid | 300,000 |
| Shares repurchased | 120,000 |
| New equity proceeds | 0 |
| Net cash paid to owners | 300,000 + 120,000 − 0 = 420,000 |
| Net cash to both provider groups | 200,000 + 420,000 = 620,000 |
This proves the funding identity under the stated assumptions. A second check runs through company cash: operating cash is $660,000 + $100,000 − $60,000 = $700,000. Then $700,000 − $200,000 + $100,000 − $180,000 − $300,000 − $120,000 = $0 change in cash.
If management retains some available cash, actual payments to providers will fall short of capital cash flow by that retained amount, assuming no other movements. Do not force the two totals to agree by inventing a dividend. Use the separate cash flow to creditors formula for creditor payments and cash flow to owners formula for distributions and equity proceeds.
FP&A can compare the operating contribution, reinvestment requirement and financing tax benefit across approved scenarios. Treasury owns borrowing and repayment dates; the controller validates closed balances; tax confirms whether deductions affect cash taxes in the relevant period.
Keep any valuation step separate. Ruback's approach pairs cash flows that include the tax shield with a compatible asset-risk discount rate. Applying a tax-adjusted rate without checking the method can count the tax benefit twice. The calculation here reconciles annual cash components; it does not estimate an enterprise value.
For a proposed asset purchase, capital budgeting and cash flow analysis addresses the project's incremental economics. For payment timing and minimum balances, use a cash flow forecast. An annual available-cash total cannot show whether a repayment falls before customers pay.
Upload a sample of your own operating, debt and tax schedules in a company workbook; Covirage maps the columns, and its tools compute the supplied cash components and check their reconciliation. The external AI model explains the differences with every figure traced to its rows. Create a free Covirage account, then set up your business and bring your own file.
See Covirage for finance teams for the supporting finance workflow.
No. Capital expenditures are payments for long-lived assets. Capital cash flow is a cash measure after reinvestment that includes the interest tax shield. Capital expenditures reduce that cash measure; they are one input rather than another name for the result.
Borrowing provides financing cash, but it does not create operating cash. When debt and equity cash flows are reconciled consistently, new borrowing increases cash available to equity while reducing net cash paid to creditors by the same amount.
Only when the relevant interest is deductible and the tax benefit is usable in the period assumed. Tax limitations, loss carryforwards, capitalized interest and timing differences can break that shortcut. Use the documented tax schedule when those conditions do not hold.