Evidence-first money workflow · Finance & Business
Fund Expense Ratio Portfolio Audit
Calculate weighted portfolio expense ratios, advisory fees, first-year cost, holding-level evidence, and modeled long-term fee drag.
- 1Prepare
- 2Analyze
- 3Review and export
Prepare the evidence
Paste the documented CSV schema or choose a local CSV file. Nothing is sent to Nirmion.
Review the analysis
Summary metrics lead back to the rows that support them.
Method and interpretation
How to use Fund Expense Ratio Portfolio Audit
Use this expense ratio calculator when fees are spread across funds and an advisory charge. It converts percentages into portfolio-weighted annual cost and shows how ongoing fees can compound over an entered horizon. The audit helps compare a current allocation, review disclosures, or prepare questions for an adviser without assuming that the lowest-fee option is automatically suitable.
Prepare the input
For every holding, enter a label, current value, annual fund expense ratio, and annual advisory fee as percentages. Use 0.25 for 0.25%, not 0.0025. Enter one common gross annual return and horizon to isolate modeled fee drag. Obtain fees from current prospectuses, shareholder reports, advisory agreements, or account documents, and avoid mixing one-time loads with ongoing ratios.
Check the worked example
The worked example combines two low-cost index funds with an active allocation fund carrying a 1.10% expense ratio and 0.50% advisory fee. Although that holding is only part of the portfolio, it raises the weighted fee and the 20-year modeled gap. Editing its value or fee immediately shows its contribution.
Read the evidence
The weighted ongoing fee reflects the mix of entered balances. First-year modeled cost converts that percentage to money using current values. The long-term fee drag compares the same gross return with and without entered ongoing fees; it includes both fees and the return no longer earned on those amounts. Review the holding table to find which balance and fee combination contributes most.
Calculation method
Holding annual cost = value × (expense ratio + advisory fee). Weighted fee = total holding annual cost ÷ total portfolio value. Gross future value = value × (1 + gross return)^years. Net future value = value × (1 + gross return − combined ongoing fee)^years. Modeled drag is the sum of gross future values minus net future values.
Review the SEC investor bulletin on mutual fund and ETF fees
Questions this workflow helps answer
Use these questions to confirm that this tool matches the task you need to complete.
- What is the weighted expense ratio of my investment portfolio?
- How much do fund and advisory fees cost in money each year?
- How can ongoing investment fees reduce a portfolio over 10 or 20 years?
Limits and decision boundary
This simplified model uses static balances, one return, and fees deducted annually. It excludes fund performance differences, transaction costs, loads, waivers, tiered advisory schedules, cash, taxes, turnover, and changing allocations. Advisory services may include planning beyond portfolio management, so fee comparisons require the actual service scope.
Common mistake
Do not add a fund expense ratio again when an adviser’s quoted all-in fee already includes underlying fund costs. Verify the disclosure scope, and do not enter percentages as decimals intended for formulas.
Your pasted values and selected CSV files are processed in this browser tab. This workflow does not connect to a bank, save a budget, or provide financial, tax, legal, or investment advice.
Questions about this workflow
Does the modeled drag equal fees shown on a statement?
No. It includes direct modeled fees plus foregone compounding under a constant-return scenario.
Should I include sales loads?
No. This contract models ongoing annual percentages. Analyze transaction and redemption charges separately.
Is a higher-fee fund always worse?
The tool measures cost, not suitability, service quality, risk, tax effects, or future performance. Use disclosures and the full decision context.