Personal finance learning tool
Portfolio Fee Ratio Calculator
Calculate the weighted expense ratio and estimated annual fund fees of a three-fund portfolio.
Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.
Understand Portfolio fee ratio
One idea, three depths
Choose how deeply to explain Portfolio fee ratio
Portfolio fee ratio: Calculate the weighted expense ratio and estimated annual fund fees of a three-fund portfolio.
Age 5Explain it to a 5-year-oldStart with a picture
Imagine using Portfolio fee ratio to answer this question: calculate the weighted expense ratio and estimated annual fund fees of a three-fund portfolio? Enter Portfolio value, Fund 1 weight, Fund 1 expense ratio, and 4 other inputs; the calculator shows Weighted portfolio expense ratio. Try changing one number and watch what happens to Weighted portfolio expense ratio. The answer tells you Weighted portfolio expense ratio.
Age 15Explain it to a 15-year-oldConnect it to the formula
The estimate covers percentage-based fund expenses and excludes trading, advice, platform and tax costs. The rule is Weighted fee = sum of portfolio weight × fund expense ratio. Its input values are Portfolio value, Fund 1 weight (%), Fund 1 expense ratio (%), Fund 2 weight (%), Fund 2 expense ratio (%), Fund 3 weight (%), Fund 3 expense ratio (%), and the main result is Weighted portfolio expense ratio. Try changing one number and watch what happens to Weighted portfolio expense ratio.
CollegeExplain it at college levelState the model precisely
This calculator evaluates a personal-finance model from stated cash amounts, rates and time assumptions. The implemented relation is Weighted fee = sum of portfolio weight × fund expense ratio, evaluated from Portfolio value, Fund 1 weight (%), Fund 1 expense ratio (%), Fund 2 weight (%), Fund 2 expense ratio (%), Fund 3 weight (%), Fund 3 expense ratio (%) to produce Weighted portfolio expense ratio. The estimate covers percentage-based fund expenses and excludes trading, advice, platform and tax costs. The result cannot predict markets or include unentered taxes, fees, legal rules, benefits, insurance terms or personal circumstances. Verify material decisions against current documents.
What this personal finance tool does
Calculate the weighted expense ratio and estimated annual fund fees of a three-fund portfolio.
Why the relationship works
The estimate covers percentage-based fund expenses and excludes trading, advice, platform and tax costs.
The formula
Weighted fee = sum of portfolio weight × fund expense ratio
Inputs and time periods
This model uses Portfolio value, Fund 1 weight, Fund 1 expense ratio, Fund 2 weight, Fund 2 expense ratio, Fund 3 weight, Fund 3 expense ratio. Keep currencies and time periods consistent, and distinguish current known amounts from assumptions about future rates.
What the result means
The primary output is Weighted portfolio expense ratio; supporting outputs include Estimated annual fund fees, Estimated monthly fund fees. Compare scenarios by changing one input at a time.
Limits of this compact model
This educational calculator cannot predict markets or account for every tax, fee, legal rule, benefit, insurance policy or personal circumstance. Verify material decisions with current documents and qualified advice.
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.
Principles of Finance
Read the free OpenStax finance textbookCite this book
- APA 7
- Dahlquist, J., & Knight, R. (2022). Principles of finance. OpenStax. https://openstax.org/books/principles-finance/pages/1-why-it-matters
- MLA 9
- Dahlquist, Julie, and Rainford Knight. Principles of Finance. OpenStax, 2022, https://openstax.org/books/principles-finance/pages/1-why-it-matters.
- Chicago author-date
- Dahlquist, Julie, and Rainford Knight. 2022. Principles of Finance. Houston, TX: OpenStax. https://openstax.org/books/principles-finance/pages/1-why-it-matters.
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). Portfolio Fee Ratio Calculator. MW SysArc Tools. https://finance.mwsysarc.com/portfolio-fee-ratio-calculator
MLA 9
MW SysArc. “Portfolio Fee Ratio Calculator.” MW SysArc Tools, 21 July 2026, https://finance.mwsysarc.com/portfolio-fee-ratio-calculator. Accessed 31 Aug. 2026.
Chicago 17
MW SysArc. “Portfolio Fee Ratio Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 31, 2026. https://finance.mwsysarc.com/portfolio-fee-ratio-calculator.
Harvard
MW SysArc (2026) ‘Portfolio Fee Ratio Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://finance.mwsysarc.com/portfolio-fee-ratio-calculator (Accessed: 31 August 2026).
BibTeX and RIS records
BibTeX
@misc{mwsysarc_portfolio_fee_ratio_personal_2026,
author = {{MW SysArc}},
title = {Portfolio Fee Ratio Calculator},
howpublished = {MW SysArc Tools},
year = {2026},
url = {https://finance.mwsysarc.com/portfolio-fee-ratio-calculator},
note = {Published July 21, 2026; accessed August 31, 2026}
}RIS
TY - ELEC
AU - MW SysArc
TI - Portfolio Fee Ratio Calculator
T2 - MW SysArc Tools
PY - 2026
DA - 2026-07-21
Y2 - 2026-08-31
UR - https://finance.mwsysarc.com/portfolio-fee-ratio-calculator
N1 - Published July 21, 2026
ER -Clear answers
Frequently asked questions
What does the Portfolio fee ratio do?
Calculate the weighted expense ratio and estimated annual fund fees of a three-fund portfolio.
How does the Portfolio fee ratio work?
The calculator applies Weighted fee = sum of portfolio weight × fund expense ratio. The estimate covers percentage-based fund expenses and excludes trading, advice, platform and tax costs.
What can I learn from the Portfolio fee ratio?
You will connect Portfolio value, Fund 1 weight, Fund 1 expense ratio, Fund 2 weight, Fund 2 expense ratio, Fund 3 weight, Fund 3 expense ratio to Weighted portfolio expense ratio, then test how changing one assumption affects the financial decision.
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 planning reference, and review how income, expenses, irregular payments, rates and time periods were classified before making decisions.
Last reviewed . Calculations tested .