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Defensive Interval Ratio Calculator

Calculate the number of days a company can operate using only liquid assets.

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Calculation Parameters

Specify your inputs below.

Calculated Result

Daily Operating Expenses Cost $657.53
Defensive Interval (Days) 121.67 days
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Expert Tip

The Defensive Interval measures cash safety margins, showing survival days if incoming business sales freeze.

How this Calculator Works

This calculator computes the Defensive Interval Ratio (DIR), measuring how many days a business can sustain its operational expenses using only its cash and other quick liquid assets without receiving new revenues. It is a critical solvency metric for downturn planning.

Formula & Methodology

Defensive Interval Ratio = (Cash + Marketable Securities + Accounts Receivable) / Daily Operating Expenses - Daily Operating Expenses is the annual cash operating expenses divided by 365.

Step-by-Step Calculation Example

Here is a step-by-step example showing how the calculations are performed:

A business has $120,000 in cash and receivables, and its daily cash operating expenses are $1,000. 1. Divide liquid assets by daily expenses: $120,000 / $1,000 = 120. Result: The Defensive Interval Ratio is 120 days, meaning the company can run for 120 days without new revenues.

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Detailed Insights & Expert Guide

ℹ️ About this Calculation

This fixed income and debt investment calculator analyzes bond pricing, coupon yield to maturity (YTM), Macaulay/modified duration, credit risk spreads, and debt coverage ratios based on Wall Street fixed income analytics.

Variable Glossary

Input

Fixed Income Data

Par value ($1,000), coupon rate %, payment frequency, maturity years, corporate credit spread, or tax rate %.

Parameter

Bond Performance

Yield to Maturity (YTM %), present bond price ($), modified duration (years), or Tax-Equivalent Yield (TEY).

How to Calculate Step-by-Step

1

Step 1

Input bond face value, annual coupon interest rate, or corporate credit default swap (CDS) basis points.

2

Step 2

Select payment schedule frequency (annual, semi-annual) and years remaining until maturity date.

3

Step 3

Review calculated yield to call/maturity, interest rate sensitivity duration, or debt service coverage (DSCR).

FAQ

How does bond duration measure interest rate risk?
Modified duration estimates the approximate percentage change in a bond's price for a 1% (100 bps) shift in interest rates. Higher duration indicates greater price sensitivity to rate moves.
What is Tax-Equivalent Yield (TEY) for municipal bonds?
Tax-Equivalent Yield = Municipal Tax-Exempt Yield / (1 - Marginal Tax Rate). It shows the pre-tax yield a taxable bond would need to equal the after-tax yield of a tax-free municipal bond.
Can fixed income calculators guarantee bond trading outcomes?
No. Bond pricing models assume clean compounding yields and fixed reinvestment rates. Secondary market prices fluctuate based on liquidity, credit rating revisions, and market interest rate movements.