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Cash Runway Calculator

Estimate how many months a business can operate at its current net cash burn.

Runs locally

Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.

Estimated cash runway6

months

Approximate runway in days182.63

Understand Cash runway

One idea, three depths

Choose how deeply to explain Cash runway

Cash runway: Estimate how many months a business can operate at its current net cash burn.

Age 5Explain it to a 5-year-oldStart with a picture

Imagine using Cash runway to answer this question: estimate how many months a business can operate at its current net cash burn? Enter Available cash and Monthly net cash burn; the calculator shows Estimated cash runway. Try changing one number and watch what happens to Estimated cash runway. The answer tells you Estimated cash runway.

Age 15Explain it to a 15-year-oldConnect it to the formula

Cash runway translates the current cash balance and expected monthly net outflow into time. It is a planning estimate: irregular receipts, tax payments and changing costs can shorten or extend the actual runway. The rule is Cash runway = Available cash ÷ monthly net burn. Its input values are Available cash, Monthly net cash burn, and the main result is Estimated cash runway. Try changing one number and watch what happens to Estimated cash runway.

CollegeExplain it at college levelState the model precisely

This tool models one operating decision from explicitly supplied company assumptions. The implemented relation is Cash runway = Available cash ÷ monthly net burn, evaluated from Available cash, Monthly net cash burn to produce Estimated cash runway. Cash runway translates the current cash balance and expected monthly net outflow into time. It is a planning estimate: irregular receipts, tax payments and changing costs can shorten or extend the actual runway. The model omits unentered taxes, cash timing, legal constraints and market uncertainty. Compare the output with company records and a downside scenario before committing resources.

The decision this tool supports

Estimate how many months a business can operate at its current net cash burn.

Why the business model works

Cash runway translates the current cash balance and expected monthly net outflow into time. It is a planning estimate: irregular receipts, tax payments and changing costs can shorten or extend the actual runway.

Inputs and operating assumptions

This model uses Available cash (at least 0), Monthly net cash burn (at least 0.01). Keep currencies, accounting treatment and time periods consistent with one another.

The formula

Cash runway = Available cash ÷ monthly net burn

What the calculator produces

The primary output is Estimated cash runway; it also exposes Approximate runway in days. Change one assumption at a time so the comparison remains explainable.

Before using the result in a decision

This compact model cannot capture every tax, accounting, legal, market or operational condition. Compare the output with current company records, cash timing and the downside scenario before committing resources.

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Supporting sourcesAcademic referencesPrimary standards, textbooks and complete citations

Standards, reading and academic references

Use the calculator as the worked interaction, then consult the primary standards and academic textbooks listed below. MW SysArc links to the original sources; the explanation on this page is original and does not reproduce them.

Introduction to Business 2e

Read the free OpenStax business textbook
Cite this book
APA 7
Gitman, L. J., McDaniel, C., Shah, A., Reece, M., Koffel, L., Talsma, B., & Hyatt, J. C. (2026). Introduction to business 2e. OpenStax. https://openstax.org/books/introduction-business-2e/pages/1-introduction
MLA 9
Gitman, Lawrence J., et al. Introduction to Business 2e. OpenStax, 2026, https://openstax.org/books/introduction-business-2e/pages/1-introduction.
Chicago author-date
Gitman, Lawrence J., Carl McDaniel, Amit Shah, Monique Reece, Linda Koffel, Bethann Talsma, and James C. Hyatt. 2026. Introduction to Business 2e. Houston, TX: OpenStax. https://openstax.org/books/introduction-business-2e/pages/1-introduction.

OpenStax entries are free to read online. Follow the licence shown on each linked source before redistributing or adapting its content.

Reuse the page responsiblyCite this pageAPA, MLA, Chicago, Harvard, BibTeX and RIS

These formats cite this calculator page itself. They are separate from the academic references above, which support the mathematical method and terminology.

Organizational author: MW SysArc. Published:. Canonical page:https://business.mwsysarc.com/cash-runway.

APA 7

MW SysArc. (2026, July 21). Cash Runway Calculator. MW SysArc Tools. https://business.mwsysarc.com/cash-runway

MLA 9

MW SysArc. “Cash Runway Calculator.” MW SysArc Tools, 21 July 2026, https://business.mwsysarc.com/cash-runway. Accessed 31 Aug. 2026.

Chicago 17

MW SysArc. “Cash Runway Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 31, 2026. https://business.mwsysarc.com/cash-runway.

Harvard

MW SysArc (2026) ‘Cash Runway Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://business.mwsysarc.com/cash-runway (Accessed: 31 August 2026).

BibTeX and RIS records

BibTeX

@misc{mwsysarc_cash_runway_2026,
  author = {{MW SysArc}},
  title = {Cash Runway Calculator},
  howpublished = {MW SysArc Tools},
  year = {2026},
  url = {https://business.mwsysarc.com/cash-runway},
  note = {Published July 21, 2026; accessed August 31, 2026}
}

RIS

TY  - ELEC
AU  - MW SysArc
TI  - Cash Runway Calculator
T2  - MW SysArc Tools
PY  - 2026
DA  - 2026-07-21
Y2  - 2026-08-31
UR  - https://business.mwsysarc.com/cash-runway
N1  - Published July 21, 2026
ER  -

Clear answers

Frequently asked questions

What does the Cash runway do?

Estimate how many months a business can operate at its current net cash burn.

How does the Cash runway work?

The calculator applies Cash runway = Available cash ÷ monthly net burn. Cash runway translates the current cash balance and expected monthly net outflow into time. It is a planning estimate: irregular receipts, tax payments and changing costs can shorten or extend the actual runway.

What can I learn from the Cash runway?

It connects company inputs to a transparent business result. Change one value at a time to compare operating scenarios.

Does MW SysArc receive or store what I enter?

No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.

How should I use the result?

Use the result as a practical reference. Review the inputs, assumptions and stated limitations before relying on it.

Last reviewed . Calculations tested .

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