How to Calculate NAV: Understanding Net Asset Value
Mutual Funds
How to Calculate NAV: Understanding Net Asset Value
Takes ~10 minDifficulty: Beginner📋0 steps
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Written by FinWiz24 Editorial
Published ·
NAV (Net Asset Value) is the price per unit of a mutual fund — the number that tells you how much your investment is worth. This guide explains how NAV is calculated, why it matters less than you think, and how it differs from stock prices.
## What You Will Learn
How NAV is calculated for mutual funds
Why NAV matters less than total returns
The difference between NAV and stock prices
How NAV changes with market movements
Common misconceptions about NAV
## What Is NAV?
NAV (Net Asset Value) is the per-unit value of a mutual fund scheme. It represents the worth of one unit of the fund. When you invest ₹10,000 and the NAV is ₹100, you receive 100 units.
NAV is calculated daily for all mutual funds in India (on all business days) by the asset management company and published on their website and on the AMFI portal by evening.
**The Formula**:
NAV = (Total Assets - Total Liabilities) / Number of Outstanding Units
Where:
- **Total Assets** = Market value of all holdings (stocks, bonds, cash) + Receivables (dividends, interest accrued)
- **Total Liabilities** = Expenses payable + Redemption payable + Other liabilities
- **Outstanding Units** = Total units issued to all investors
## Step 1: Understand How NAV Is Calculated
**The Calculation Process (End of Day)**:
1. **Portfolio Valuation**: At market close (3:30 PM for equity markets), the fund accountant values all holdings at their closing market prices.
- Stocks: Closing price on BSE/NSE
- Bonds: Market price based on bond yield (may use last trade price or matrix pricing)
- Cash and receivables: At face value
2. **Liability Calculation**: Accrue for the day's expenses (management fee, custodian fee, registrar fee), calculate redemption requests received, and account for other payables.
3. **NAV Computation**: (Assets - Liabilities) / Units Outstanding
4. **Publication**: NAV is published on the AMC website and AMFI India website by 9–11 PM on the same day.
**Example Calculation**:
- Fund has ₹100 crores in equity holdings + ₹5 crores in cash = ₹105 crores in assets
- Total liabilities (expenses + redemptions): ₹5 crores
- Net assets: ₹105 - ₹5 = ₹100 crores
- Outstanding units: 10 crores
- NAV = ₹100 crores / 10 crores = ₹10 per unit
## Step 2: The NAV Myth — Why Lower NAV Is Not Better
The most common misconception about NAV is that a fund with a lower NAV is "cheaper" or "better value" than one with a higher NAV.
**This Is Completely Wrong**.
A fund with NAV of ₹50 owning ₹50 worth of assets per unit is exactly the same value as a fund with NAV of ₹500 owning ₹500 worth of assets per unit.
The number of units you own determines your total wealth, not the NAV. If you invest ₹10,000:
- At ₹50 NAV: You get 200 units = ₹10,000 worth
- At ₹500 NAV: You get 20 units = ₹10,000 worth
Both investments are worth exactly ₹10,000. The NAV is irrelevant to your wealth — what matters is whether the NAV grows over time.
**Why New Funds Have Low NAV**:
New mutual funds are launched with an initial NAV of ₹10 (some older schemes started at ₹1). As they grow and invest, the NAV increases. A 15-year-old fund with NAV of ₹800 simply means it has grown 80× since inception — the same as a new fund at ₹50 that has grown 5×. The growth rate is what matters, not the absolute NAV.
## Step 3: NAV vs Stock Price — The Key Differences
Mutual fund NAVs and stock prices are calculated differently and behave differently.
| Factor | Mutual Fund NAV | Stock Price |
|---|---|---|
| What it represents | Per-unit value of fund's assets minus liabilities | Per-share ownership in a company |
| What determines it | Portfolio value divided by units outstanding | Company earnings, growth, market sentiment |
| When calculated | End of day (daily) | Real-time during market hours |
| Relationship to value | Should reflect fair value of holdings | Can deviate significantly from book value |
| Volatility | Lower (portfolio diversification) | Higher (single company risk) |
**Why Stock Prices Can Deviate from Value**:
A stock trading at ₹500 may have a book value of ₹50 (P/B of 10×). Investors are pricing in future growth, brand value, and earnings potential. The stock can trade above or below its intrinsic value for years.
**Why Mutual Fund NAV Is More Transparent**:
Mutual funds are required to publish their portfolio holdings daily (top 10 holdings) and the full portfolio monthly. The NAV reflects the actual market value of known holdings. The tracking error between NAV and actual value is minimal.
## Step 4: How Market Movements Change NAV
Your fund's NAV moves because the underlying stocks move.
**When Stocks Rise**:
If the stocks in a fund's portfolio rise by 2% on a given day, the fund's NAV rises by approximately 2% (minus the small expense ratio deduction).
**The Expense Ratio Effect**:
The expense ratio (say 1% per annum) is deducted from NAV daily. So each day, your NAV increases by the portfolio return minus (expense ratio / 365).
- Portfolio return today: +1.5%
- Daily expense ratio: 1% / 365 = 0.0027%
- NAV change: +1.5% - 0.0027% = +1.497%
This daily deduction is why a fund with a 12% gross return has a net return of ~11% after the expense ratio.
**Dividend/Distribution Effect**:
When a fund declares a dividend, the NAV drops by the dividend amount per unit on the ex-dividend date. If a fund with NAV ₹100 declares ₹5 dividend, the NAV drops to ₹95 on the ex-dividend date. The dividend payout is not a gain — it is a return of your own capital.
## Step 5: Track NAV Changes the Right Way
**Use Total Returns, Not NAV Changes**:
The correct way to evaluate a fund's performance is the **total return** — which accounts for NAV growth plus dividends reinvested.
**Example**:
A fund starts the year at NAV ₹100. It grows to ₹112 by year-end. It also distributed ₹5 in dividends during the year.
- NAV growth: 12%
- Dividend: 5% of ₹100 = ₹5
- Total return: 17% (NAV growth + dividend yield)
A dividend of ₹5 on ₹100 NAV is 5% yield. If you reinvested the dividend (bought more units), your actual return is 17%, not just 12%.
**Why This Matters**:
Growth option funds (which reinvest dividends) show NAV growth that represents the full return. Dividend option funds show lower NAV because dividends are paid out. Always compare total returns (including dividend) to evaluate fund performance accurately.
## Common Mistakes to Avoid
**Choosing a Fund Because It Has a Low NAV**: As explained, low NAV is meaningless. Choose funds based on returns, risk-adjusted performance, and consistency — not NAV levels.
**Checking NAV Too Frequently**: NAV changes daily, but your investment horizon should be at least 3–5 years. Checking NAV daily creates anxiety and tempts you to make emotional decisions. Weekly or monthly checks are sufficient for long-term investors.
**Confusing NAV with Fund Size**: A ₹10,000 crore fund (AUM) and a ₹500 crore fund both have the same potential. A larger AUM can actually be a disadvantage in small cap investing — large funds cannot buy small company stocks without moving the price significantly.
**Ignoring the Expense Ratio in NAV Calculation**: The NAV already reflects the expense ratio deduction. A fund with 0.5% expense ratio will always trail its gross return by 0.5% per year. This is not a reason to avoid the fund — just understand the cost you pay for professional management.
## Pros and Cons
| NAV Feature | Implication |
|---|---|
| Daily calculation | Transparent — you always know current value |
| Market-based valuation | Reflects actual portfolio worth |
| Not affected by trading volume | Unlike stocks, no liquidity concerns |
| Standardized across funds | Allows apple-to-apple comparison of returns |
| Lower NAV does not mean better value | NAV level is meaningless — growth rate matters |
## Frequently Asked Questions
**Q1: Is a lower NAV better for a new fund?**
A: No. NAV is just a number. A new fund at ₹10 and an old fund at ₹500 are comparable only based on percentage returns. The old fund at ₹500 growing 15% per year creates far more wealth than the new fund at ₹10 growing 10%. Choose based on growth rate, consistency, and risk-adjusted returns.
**Q2: How is NAV affected when a fund declares a dividend?**
A: On the record date, the NAV remains unchanged. On the ex-dividend date (typically the next day), the NAV drops by the dividend amount per unit. If you held units on the record date, you receive the dividend. If you buy on ex-dividend date, you do not receive the dividend but the lower NAV may offer a better entry point.
**Q3: Does a high NAV mean the fund is overvalued?**
A: No. NAV represents the underlying asset value. A fund with NAV of ₹1,000 holding ₹1,000 per unit in stocks is fairly valued. There is no concept of overvaluation in NAV the way stocks can be overvalued. However, if the stocks the fund holds are overvalued, the NAV will eventually fall when those stocks correct.
**Q4: Why do different funds have such different NAV levels?**
A: NAV is simply the cumulative value of investments since the fund's inception, after accounting for distributions and expenses. A fund started in 1993 at ₹10 that has grown at 15% per year would have a NAV of ₹1,000+ today. A fund started in 2020 at ₹100 that has grown at 15% per year would have a NAV of ₹180. The difference is just time, not value.
**Q5: Can two funds with the same portfolio have different NAVs?**
A: Yes. If Fund A and Fund B both hold the same stocks, they should have similar daily NAV changes. However, different expense ratios (0.5% vs 1.5%) mean Fund A's NAV grows slightly faster each day. Over years, this difference compounds. This is why lower-cost funds are preferable in the same category.
## Related Guides
How to Read a Mutual Fund Fact Sheet: Complete Guide
Mutual fund fact sheets contain all the information you need to evaluate a fund — but they are often dense and confusing. This guide teaches you how to read a fact sheet: what numbers matter, what red flags to look for, and how to compare funds using fact sheet data.