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Updated 2026-05-14 · Investing · Educational use only ·

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Information Ratio Calculator

Active manager skill.

Calculate the information ratio to measure active manager skill as excess return divided by tracking error against a chosen benchmark.

What this tool does

This calculator computes the information ratio, a metric that expresses active manager performance as excess return relative to benchmark divided by the volatility of that excess return. The result shows return per unit of active risk — illustrating how efficiently a portfolio's outperformance (or underperformance) is achieved compared to its benchmark. Portfolio return, benchmark return, and tracking error are the primary inputs that determine the outcome. A typical application is assessing whether a manager's returns justify the active risk taken. The calculator provides context bands to help interpret the ratio numerically. Note that this tool models historical or hypothetical scenarios for illustration only and does not account for fees, tax impacts, or future market conditions. Results reflect the inputs provided and should not be viewed in isolation from broader portfolio analysis.

Quick answer: with the default values, the result is 1.00 (Information Ratio). Adjust the values below for your own figures.

Enter Values

Portfolio Return %

Benchmark Return %

Tracking Error %

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Formula Used

I R = \frac{R _{p} - R _{b}}{T E}

I R

Information ratio

R_{p}

Portfolio return

R_{b}

Benchmark return

T E

Tracking error

Disclaimer

Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.

Information ratio measures active management skill: active return / tracking error. 1% excess return with 3% tracking error = IR 0.33 (modest skill). 2% excess with 2% TE = IR 1.0 (excellent). IR > 0.5: good. IR > 1.0: top decile. Negative: underperforming benchmark.

Example: portfolio returns 13% vs benchmark 11% (active return 2%). Tracking error 2%. Information ratio = 1.0. Excellent active management - beating benchmark by meaningful margin with controlled deviation. IR is typically interpreted relative to peer managers, where an IR above 0.5 sustained over 5+ years is often read as a signal of genuine skill rather than luck.

IR limitations: (1) Short-term IR misleading (2-3 year results often luck). Need 5-10 years for skill assessment. (2) Survivorship bias inflates reported IRs. (3) Style drift confuses interpretation. (4) Doesn't capture downside skewness (manager could have IR 1.0 but deliver disasters in tail events). IR is commonly read alongside Sharpe, max drawdown, and a qualitative assessment of the manager's process. Some quantitative funds have reportedly sustained IR above 2.0 over long periods, while active-manager IRs are more often reported below 0.5.

A worked example

With the defaults: portfolio return of 13%, benchmark return of 11%, tracking error of 2%. The tool returns 1.00.

What moves the number most

The result responds to Portfolio Return %, Benchmark Return %, and Tracking Error %.

The formula behind this

Information ratio = active return / tracking error.

Where this fits in planning

This is a "what-if" tool, not a forecast. It helps to test ideas: what happens to the information ratio if the portfolio return comes in lower than hoped, or if tracking error runs higher than planned. The value is in the scenarios you run across the three inputs, not the single answer the defaults produce.

Example Scenario

(13% - 11%) / 2% TE = 1.00.

Inputs

Portfolio Return %:13%

Benchmark Return %:11%

Tracking Error %:2%

Expected Result1.00

Expected Result breakdown
Active Return	2.00%
Tracking Error	2.00%
Portfolio Return	13.00%
Benchmark Return	11.00%
Skill Rating	Excellent (top-tier manager)

This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.

Sources & Methodology

Methodology

This calculator computes the information ratio, a measure of active management performance relative to risk taken. The calculation subtracts the benchmark return from the portfolio return to derive active return, then divides this result by tracking error—the standard deviation of active return over the measurement period. The output expresses how much excess return is generated per unit of active risk. The model assumes returns and tracking error remain consistent over the period measured, and treats all active decisions as equally sustainable. It does not account for transaction costs, market impact, portfolio turnover, survivorship bias, or the statistical significance of the ratio itself. Results are sensitive to the choice of benchmark and measurement period.

References

Frequently Asked Questions

What's a good IR?

Commonly cited benchmarks describe Information Ratio ranges as follows: above 0.5 indicates skilled-manager performance (top quartile); 1.0+ sits in the top decile; 0-0.5 indicates modest skill; negative IR underperforms the benchmark. Some quantitative funds have reportedly sustained 2.0+ over long periods. Active mutual fund IRs are often reported in the 0.3-0.5 range over 10 years. Index funds by definition: 0 (track exactly). The applicable range depends on strategy, asset class, time period, and benchmark used.

IR vs Sharpe?

IR: excess return vs benchmark per unit of tracking error. Sharpe: excess return vs baseline rate per unit of total volatility. IR for active manager evaluation. Sharpe for absolute risk-adjusted return. Index fund: Sharpe positive but IR = 0 (no benchmark deviation). Active manager: both useful.

Time period needed?

Minimum 5 years for skill assessment. Better: 10+ years. Short-term IR (1-3 years) often luck-driven. Top managers in 3-year periods often regress to mean over 10 years. Track record persistence weak for active management - top quartile rarely stays top quartile decade after decade.

IR limitations?

(1) Doesn't capture downside skewness. (2) Survivorship bias inflates published IRs (failed funds excluded). (3) Style drift makes comparison hard. (4) Fees not always included. (5) Backward-looking. IR is best read alongside a qualitative manager assessment, where process, team, and philosophy matter beyond the historical numbers.

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