Business decision tool
Customer Concentration Revenue at Risk Calculator
Estimate revenue and contribution exposed to the loss of the largest customers.
Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.
Understand Customer Concentration Revenue at Risk
One idea, three depths
Choose how deeply to explain Customer Concentration Revenue at Risk
Customer Concentration Revenue at Risk: Estimate revenue and contribution exposed to the loss of the largest customers.
Age 5Explain it to a 5-year-oldStart with a picture
Imagine using Customer Concentration Revenue at Risk to answer this question: estimate revenue and contribution exposed to the loss of the largest customers? Enter Annual revenue, Largest customer share, Next four customers share, and 2 other inputs; the calculator shows Top-five revenue at risk. Try changing one number and watch what happens to Top-five revenue at risk. The answer tells you Top-five revenue at risk.
Age 15Explain it to a 15-year-oldConnect it to the formula
Concentration indicates exposure, not probability of loss. Contract length, switching costs and customer health determine actual risk. The rule is Revenue at risk = annual revenue × selected customer concentration share. Its input values are Annual revenue, Largest customer share (%), Next four customers share (%), Contribution margin (%), Cash reserve, and the main result is Top-five revenue at risk. Try changing one number and watch what happens to Top-five revenue at risk.
CollegeExplain it at college levelState the model precisely
This tool models one operating decision from explicitly supplied company assumptions. The implemented relation is Revenue at risk = annual revenue × selected customer concentration share, evaluated from Annual revenue, Largest customer share (%), Next four customers share (%), Contribution margin (%), Cash reserve to produce Top-five revenue at risk. Concentration indicates exposure, not probability of loss. Contract length, switching costs and customer health determine actual risk. 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 revenue and contribution exposed to the loss of the largest customers.
Why the business model works
Concentration indicates exposure, not probability of loss. Contract length, switching costs and customer health determine actual risk.
Inputs and operating assumptions
This model uses Annual revenue, Largest customer share, Next four customers share, Contribution margin, Cash reserve. Keep currencies, accounting treatment and time periods consistent with one another.
The formula
Revenue at risk = annual revenue × selected customer concentration share
What the calculator produces
The primary output is Top-five revenue at risk; it also exposes Contribution at risk, Cash coverage of exposed monthly revenue. 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.
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 textbookCite 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.
APA 7
MW SysArc. (2026, July 21). Customer Concentration Revenue at Risk Calculator. MW SysArc Tools. https://business.mwsysarc.com/customer-concentration-revenue-at-risk
MLA 9
MW SysArc. “Customer Concentration Revenue at Risk Calculator.” MW SysArc Tools, 21 July 2026, https://business.mwsysarc.com/customer-concentration-revenue-at-risk. Accessed 30 Aug. 2026.
Chicago 17
MW SysArc. “Customer Concentration Revenue at Risk Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 30, 2026. https://business.mwsysarc.com/customer-concentration-revenue-at-risk.
Harvard
MW SysArc (2026) ‘Customer Concentration Revenue at Risk Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://business.mwsysarc.com/customer-concentration-revenue-at-risk (Accessed: 30 August 2026).
BibTeX and RIS records
BibTeX
@misc{mwsysarc_customer_concentration_revenue_risk_2026,
author = {{MW SysArc}},
title = {Customer Concentration Revenue at Risk Calculator},
howpublished = {MW SysArc Tools},
year = {2026},
url = {https://business.mwsysarc.com/customer-concentration-revenue-at-risk},
note = {Published July 21, 2026; accessed August 30, 2026}
}RIS
TY - ELEC
AU - MW SysArc
TI - Customer Concentration Revenue at Risk Calculator
T2 - MW SysArc Tools
PY - 2026
DA - 2026-07-21
Y2 - 2026-08-30
UR - https://business.mwsysarc.com/customer-concentration-revenue-at-risk
N1 - Published July 21, 2026
ER -Clear answers
Frequently asked questions
What does the Customer Concentration Revenue at Risk do?
Estimate revenue and contribution exposed to the loss of the largest customers.
How does the Customer Concentration Revenue at Risk work?
The calculator applies Revenue at risk = annual revenue × selected customer concentration share. Concentration indicates exposure, not probability of loss. Contract length, switching costs and customer health determine actual risk.
What can I learn from the Customer Concentration Revenue at Risk?
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 .