# How Does Implied Volatility Affect Option Income?

Source: https://www.vistashares.com/implied-volatility-option-income/
Published: 2026-11-13 | Updated: 2026-11-13

By Adam Patti, Chief Executive Officer, VistaShares | November 2026

Implied volatility is the level of future price movement that the market is building into option prices, and it is one of the main drivers of how much premium an option seller collects. When implied volatility is high, options cost more, so funds that sell them collect more premium; when it is low, premiums shrink. For option income ETFs, that link means income tends to rise when markets are turbulent and fall when they are calm, while the risks of the underlying stocks remain.

## What is implied volatility?

Volatility measures how much a price moves up and down. **Realized volatility** looks backward, measuring how much an index actually moved over a past period. **Implied volatility** looks forward: it is the volatility level that, plugged into an option pricing model, produces the option's current market price. It reflects what buyers and sellers collectively expect, along with how much they are willing to pay to hedge against large moves.

Implied volatility is expressed as an annualized percentage. An implied volatility of 16% suggests the market expects annual price swings of about 16% in standard deviation terms, which corresponds to roughly 1% a day on a typical day.

## What is the VIX?

The Cboe Volatility Index, or VIX, measures the 30-day implied volatility of the S&P 500, calculated from S&P 500 option prices. Cboe has reported a long-term median VIX level of about 17.6.[1] The index has averaged about 19 to 21 over long periods, depending on the starting date and data source.[2] Annual averages have varied widely: about 25.6 in 2022, 15.6 in 2024 and 18.6 in 2025.[3] The VIX tends to spike during market stress and drift lower during calm periods.

Cboe also calculates volatility indexes for other benchmarks, including the Nasdaq-100 Volatility Index (VXN), which typically runs higher than the VIX because the Nasdaq-100 is more concentrated in technology companies.

## How does implied volatility affect premium?

For an at-the-money option, a common approximation is that premium is roughly 0.4 times implied volatility times the square root of time to expiration, expressed as a share of the index level. (Hypothetical approximation, before fees and expenses, ignoring interest rates and dividends.)[5]

**At 16% implied volatility**, a one-month at-the-money option is worth about 0.4 × 16% × √(1/12), or about 1.8% of the index.

**At 32% implied volatility**, the same option is worth about 3.7%.

Doubling implied volatility roughly doubles the premium for at-the-money options. For out-of-the-money options, the effect can be proportionally larger.

## What is the volatility risk premium?

Historically, implied volatility has tended to exceed the volatility that later occurs. Cboe reported that from 2013 through 2023, the gap between the VIX and subsequent 30-day realized volatility averaged about 3.33 percentage points.[4] This difference, called the volatility risk premium, is often described as compensation that option sellers receive for bearing the risk of large, sudden moves. It is one reason option-selling strategies have, over long periods, generated income without proportionally higher losses.

The premium is not constant. In some periods, realized volatility exceeds implied volatility, and option sellers lose more than the premium they collected. These episodes often coincide with sharp market declines.

## Why does high volatility not mean higher returns?

Higher implied volatility increases premium, but it usually arrives with larger market moves. A fund that collects more premium during a sell-off may still post losses if the market falls further than the premium offsets. Conversely, in calm, rising markets, premiums are lower and the fund gives up gains above its strikes. Income and total return are related but distinct. Our article on [distribution yield versus total return](https://www.vistashares.com/distribution-yield-vs-total-return/) explains the difference.

## How does volatility vary across markets?

Implied volatility differs by underlying. Single stocks usually carry higher implied volatility than broad indexes, because a diversified index smooths out company-specific moves. Among indexes, those concentrated in fewer or more volatile stocks tend to have higher implied volatility. Volatility also varies by expiration: short-dated options can react sharply to near-term events, while longer-dated options reflect a broader range of expectations. The pattern across expirations is called the term structure, and it usually slopes upward in calm markets and inverts during stress, when near-term volatility jumps above longer-term levels.

## How do option income ETFs respond to changes in volatility?

**Distributions.** Funds that distribute most of their option income often see distributions rise when implied volatility increases and fall when it decreases, with a lag that depends on how often they sell options.

**Strike selection.** Some funds adjust strikes based on volatility, selling further out of the money when premiums are rich.

**Upside participation.** When volatility is low, at-the-money premiums shrink noticeably, so the cost of giving up upside can feel higher relative to income.

**Underlying choice.** Funds writing options on more volatile indexes or single stocks collect higher premiums, along with greater price risk. Our article on [S&P 500 versus Nasdaq-100 covered calls](https://www.vistashares.com/sp500-vs-nasdaq100-covered-calls/) compares two common underlyings.

## Frequently asked questions

### Is high implied volatility good for option income ETFs?

It increases the premium these funds collect, which can support higher distributions. But high implied volatility usually reflects expectations of large market moves, and actual declines can exceed the premium received, which results in losses. Whether a high-volatility period is favorable depends on what the market does next, which cannot be known in advance.

### What does a VIX of 20 mean?

A VIX of 20 means option prices imply annualized S&P 500 volatility of about 20% over the next 30 days. As a rough guide, that corresponds to expected daily moves of about 1.25% on a typical day. It does not predict direction. A VIX near its long-term average suggests neither unusually calm nor unusually stressed expectations.

### Why is implied volatility usually higher than realized volatility?

Option buyers often pay extra to hedge against sudden losses, and sellers demand compensation for bearing the risk of rare, large moves. This volatility risk premium means implied volatility has tended to exceed later realized volatility on average. In some periods, especially sharp sell-offs, realized volatility rises above what was implied, and option sellers lose money.

### Does implied volatility affect puts and calls differently?

Yes. For stock indexes, out-of-the-money puts usually carry higher implied volatility than out-of-the-money calls, a pattern called skew. It reflects stronger demand for downside hedges. As a result, put-writing strategies may collect relatively more premium than call-writing strategies at similar distances from the current index level, along with greater exposure to declines.

### Can volatility stay low for long periods?

Yes. The VIX has spent extended stretches in the low to mid teens, such as in parts of 2017, 2024 and 2025. During these periods, option premiums are smaller, so option income strategies collect less. Volatility can also rise suddenly, as it did in early 2020 and in 2022, which raises premiums and typically coincides with market declines.

### How can investors track implied volatility?

Cboe publishes the VIX and other volatility indexes in real time during trading hours, and many financial websites display them. Historical data is available from Cboe and from the Federal Reserve Bank of St. Louis. Some option income funds discuss volatility conditions in shareholder reports or commentary, which can help explain changes in distributions.

## NOTES

- Cboe, "Inside Volatility Trading: More Chaos Ahead, or a Bottom? What Does the VIX Index Say?," Cboe Insights.
- InvestmentNews, "Volatility Index" glossary entry, citing Federal Reserve Bank of St. Louis data, 2026.
- Macrotrends, "VIX Volatility Index: Historical Chart," annual average closing values, 2022 through 2025.
- Cboe, "Generating Income and Managing Risk: Cash-Secured Put Writing in a Low Equity Return Environment," Cboe Insights, 2023.
- Calculations are VistaShares illustrations using a standard approximation for at-the-money option prices.

## IMPORTANT INFORMATION

This material is provided for educational purposes only. It is not investment, legal or tax advice, and it is not a recommendation or an offer to buy or sell any security. Information is drawn from sources believed to be reliable as of the date of publication, is not guaranteed as to accuracy or completeness, and may change without notice. Figures attributed to third parties are their estimates. Projections and forecasts are not guarantees of future results. Investors should consult their own financial, legal and tax professionals before making investment decisions. Investments involve risk, including possible loss of principal. Strategies that use options involve additional risks, including limited participation in market gains, the risk that options do not perform as intended, and changes in distributions. Tax treatment depends on individual circumstances and on current law, which may change.