NAV computation methodology for Indian mutual funds

The NAV computation methodology for Indian mutual funds is the standardised daily process by which the per-unit value of each scheme is calculated, comprising the market valuation of every security in the portfolio, the accrual of income and expenses, the application of plan- and option-specific adjustments, and the division of net assets by units outstanding. The methodology is prescribed by SEBI through Regulation 47 and the Eighth Schedule of the SEBI (Mutual Funds) Regulations, 1996 , implemented by valuation policies maintained by each AMC and operationalised by the fund accountant , with daily price inputs from two SEBI-recognised valuation agencies (CRISIL Ltd and ICRA Analytics).

This article is the operational companion to the Net Asset Value (NAV) reference. The NAV article treats the concept and its uses; this article describes the computation in detail, covering each instrument class, accrual conventions, the fair-value framework for illiquid or stale-price situations, and the reconciliation and audit framework. The applicable-NAV rules, which determine which day’s NAV applies to a given transaction, are treated separately at the applicable NAV and cut-off rules reference.

A robust NAV computation framework is foundational to investor protection in any mutual fund regime. It ensures that the price at which incoming subscribers and outgoing redeemers transact reflects current market value rather than a stale or smoothed approximation. The Indian framework is among the more prescriptive in the world: full mark-to-market is required for debt securities with residual maturity above 30 days (the 30-day threshold is among the tightest globally), valuation policies must be approved by the trustees and reviewed quarterly, and material valuation errors trigger a SEBI-mandated investor compensation framework.

Regulatory framework

Statutory and regulatory anchors

Regulation 47(2) prescribes the NAV formula; Regulations 48 to 50 set out the principles for valuation of investments; and the Eighth Schedule provides the detailed instrument-by-instrument rules for equity, debt, money-market, derivatives, and other instrument classes. The Eighth Schedule has been amended several times, most consequentially through the 2019 circular on mark-to-market thresholds.

Key amending circulars

• SEBI Circular SEBI/HO/IMD/DF4/CIR/P/2019/102 dated 24 September 2019, effective 1 April 2020, replaced the prior 60-day amortisation threshold for debt and money-market securities with a 30-day threshold and required full mark-to-market valuation for securities with residual maturity above the threshold. The circular’s introduction is treated in detail at the mark-to-market for debt mutual funds reference and the daily mark-to-market for debt MFs reference.
• SEBI Circular SEBI/HO/IMD/DF2/CIR/P/2020/175 dated 17 September 2020, effective 1 January 2021 (subsequently 1 February 2021), tightened the relationship between funds realisation and applicable NAV for purchases of Rs 2 lakh or more.
• SEBI Circular SEBI/HO/IMD/DF2/CIR/P/2021/553 dated 29 September 2021 introduced the swing-pricing mechanism for debt mutual fund schemes, permitting NAV adjustment up or down in stressed market conditions.
• SEBI Master Circular on Mutual Funds, reissued in May 2024, consolidated all NAV-related circulars into a single operating document.

AMFI valuation guidelines

AMFI’s Best Practice Guidelines on Valuation, periodically updated, operationalise SEBI’s principles into industry-wide procedural conventions. The guidelines cover thinly traded equity valuation, fair-value methodologies for unlisted equity, derivative valuation under stress, and the matrix-pricing approach for off-the-run debt securities. AMFI also empanels the two recognised valuation agencies (CRISIL and ICRA) and maintains the technical specifications for the daily debt-price feeds those agencies provide.

Step 1: valuation of equity and equity-linked securities

Listed and traded

Equity securities that are listed on a recognised stock exchange and have traded on the valuation date are valued at the closing price on the principal exchange. The principal exchange is the stock exchange on which the security records the higher average daily trading turnover; for most index constituents this is the NSE, but for certain mid- and small-cap securities the BSE may be the principal exchange. The AMC’s valuation policy in the Statement of Additional Information (SAI) specifies the principal-exchange determination methodology.

Listed but not traded

If a security has not traded on the valuation date, the valuation falls back to the last traded price on the principal exchange. If the last traded price is more than 30 days old, the AMC’s valuation committee must apply a fair-value adjustment. The fair-value adjustment may use:

• A matrix price derived from comparable peer-group securities.
• An independent valuation from a SEBI-empanelled valuation agency.
• A model-derived price using public-market multiples (P/E, EV/EBITDA) adjusted for illiquidity discount.

Thinly traded

SEBI defines a security as thinly traded if either (a) the monthly trading volume is below Rs 5 lakh, or (b) the average daily turnover for 30 days is below specified thresholds. Thinly traded securities are valued using the matrix-pricing approach with peer-group adjustments, subject to AMC valuation committee approval and trustee review.

Unlisted equity

Unlisted equity holdings, typically arising from pre-IPO investments or anchor allocations that have not yet completed listing, are valued using AMC-approved valuation methodologies. The standard approaches are:

• Discounted cash flow (DCF): For mature unlisted companies with stable cash flows.
• Comparable company multiples: P/E, EV/EBITDA, P/B applied against listed peer-group multiples adjusted for size and growth.
• Latest funding round price: Used if a credible primary equity round has occurred within the prior 6 to 12 months, adjusted for liquidity discount.

Each unlisted valuation is supported by a written rationale signed by the AMC valuation committee and reviewed by the trustees at least quarterly.

Foreign-listed securities

For fund-of-fund overseas allocations and direct foreign equity holdings under the SEBI overseas-investment framework, the valuation uses the closing price on the foreign exchange on the corresponding day (subject to time-zone offset), converted at the Reserve Bank of India reference rate. Where the foreign market is closed on an Indian business day, the prior available closing price is used.

Step 2: valuation of debt and money-market instruments

The post-2020 mark-to-market regime

Since 1 April 2020, debt and money-market securities with residual maturity above 30 days are valued at prices provided by SEBI-recognised valuation agencies. CRISIL Ltd and ICRA Analytics operate as the two AMFI-empanelled agencies. Each publishes a daily price for thousands of debt securities, drawing on:

• Active market quotes from the inter-bank market.
• Submitted prices from broker dealers.
• Yield curve interpolation against benchmarks (government securities, state development loans, AAA corporate bonds).
• Credit spread analysis against the relevant rating tier.

If prices from both CRISIL and ICRA are available, the average is typically used. If only one provides a price, that price is used. If neither agency can provide a price (most commonly for very illiquid corporate bonds, securitised instruments, or distressed credits), the AMC valuation committee must derive a fair value using a defined fallback methodology, document the rationale, and notify the trustees.

Securities up to 30 days residual maturity

Securities with 30 days or fewer to maturity are valued on a straight-line amortisation basis. The purchase price is amortised to face value over the remaining days at the implied yield-to-maturity at purchase. The amortisation regime is permissible because the short residual maturity limits the mark-to-market variance: a 1 per cent yield shift produces only a few basis points of price change over a maturity window of less than 30 days.

The amortised value is, however, subject to a fair-value override if it differs from the matrix price from the valuation agency by more than a defined threshold (typically 25 basis points of yield). The override prevents systematic divergence of amortised value from market value in unusual conditions.

Money-market instruments

Treasury Bills (issued by the Government of India), Commercial Paper (issued by corporates), Certificates of Deposit (issued by banks), and other money-market instruments follow the same 30-day threshold. Issuance prices for primary subscriptions are validated against the secondary-market yield curve at issuance.

Derivatives

Derivatives held for hedging in dynamic asset allocation, multi-asset, and arbitrage schemes follow the same daily settlement convention. The notional value of derivatives is excluded from the gross-assets calculation; only the marked-to-market gain or loss enters NAV.

Step 3: accrual of income

Several income line items accrue daily but are settled periodically. The accrual conventions are:

Accrued income enters net assets on each valuation day; the reversing entry on the settlement date converts the accrued receivable into cash.

Step 4: accrual of expenses

Daily NAV reflects all expenses applicable to the scheme for that day. The dominant expense is the Total Expense Ratio (TER) , accrued at one-365th (or one-366th in a leap year) of the annualised TER on the prior day’s net assets.

The TER itself comprises several components:

• Investment management fee retained by the AMC.
• Trustee fee paid to the trustees .
• Custodian fee paid to the custodian for safekeeping and trade settlement.
• RTA fee paid to the registrar and transfer agent .
• Marketing and distribution expenses including trail commission to distributors in the regular plan.
• Audit fee under the SEBI mutual-fund compliance audit framework.
• Investor education component at 2 basis points of daily net assets.
• GST at 18 per cent on the investment management fee component.

Each component is accrued daily on the same basis. The aggregate of these components must remain within the slab cap under Regulation 52 .

In addition to the TER components, the scheme bears non-TER expenses that are passed through to investors as separate accruals:

• Securities Transaction Tax (STT) on equity and equity-mutual-fund sale transactions.
• Stamp duty on units issued (0.005 per cent since 1 July 2020).
• Brokerage and transaction costs on the underlying securities, subject to a separate 12-basis-point cap on cash market traded turnover.

Step 5: net assets and NAV finalisation

Once all asset values and liability accruals are determined, the NAV computation proceeds as:

1. Gross assets = market value of all securities held plus accrued income plus other current assets (subscription money received not yet deployed, dividends receivable).
2. Total liabilities = accrued expenses plus outstanding redemption payable plus distribution payable plus other current liabilities.
3. Net assets = gross assets minus total liabilities.
4. Units outstanding = units issued through all subscriptions to date minus units redeemed to date, as of the close of the prior business day (subscriptions and redemptions on the current day use the NAV being computed for allotment).
5. NAV = net assets divided by units outstanding, rounded to four decimal places.

For schemes with plan and option variants, the calculation is performed separately for each combination of plan (direct, regular) and option (growth, IDCW), each maintaining a distinct NAV. The underlying portfolio is shared; the differential arises from the cumulative TER differential and the cumulative IDCW distribution history.

Step 6: reconciliation and quality control

Before the NAV is published, the fund accountant performs a daily three-way reconciliation:

A variance between any two sources triggers a hold on NAV publication and an investigation. The fund accountant also performs a NAV walk-back: the prior day’s NAV is rolled forward using the day’s market move and the day’s net subscription or redemption activity, and the result is compared to the freshly computed NAV. Material variances are documented and resolved before publication.

Step 7: submission and disclosure

The finalised NAV is submitted to AMFI and uploaded to the AMC’s own website. The submission deadlines are:

NAVs are submitted to AMFI through the daily NAV file, the NAVall feed , and made available on the AMFI portal at navindia.amfiindia.com. The fund accountant signs off on the NAV before submission, and the auditor of the scheme reviews the process during the half-yearly limited review and annual audit.

Special situations

Side-pocketing of debt schemes

When a credit event affects a debt holding (typically a rating downgrade to default or a missed coupon), the AMC may invoke the side-pocketing framework under SEBI’s December 2018 circular. The portfolio is bifurcated:

• Main portfolio: continues to receive new subscriptions and redemptions at the prevailing NAV.
• Side-pocketed portfolio: a separate scheme with the distressed holding, frozen for new subscriptions; existing unit-holders receive a proportionate allotment.

Each portfolio maintains its own NAV. The side-pocketed NAV is typically marked to a recovery-based fair value (often zero or close to zero at inception, with upward revisions as recovery proceeds come in). The main-portfolio NAV is unaffected by subsequent recovery in the side pocket.

Swing pricing

The September 2021 swing-pricing framework, applicable to debt mutual fund schemes under stressed market conditions, permits the NAV to be adjusted up (for net subscriptions) or down (for net redemptions) by a defined swing factor when daily net flows exceed a trigger threshold. The mechanism is designed to allocate the cost of liquidity to the transacting investors rather than to remaining unit-holders. The framework was a response to the Franklin Templeton winding-up of 2020 .

Stress days and trading halts

On days of significant market stress (circuit breakers, trading halts, currency-market freezes), the AMC’s valuation committee may suspend the daily NAV under defined conditions and republish once the market reopens. Such suspensions are extremely rare in the Indian context; the last comparable event was the March 2020 COVID-driven market dislocation, during which NAVs continued to be computed but with elevated fair-value adjustment activity.

Error compensation framework

If a material NAV error is identified after publication (defined by SEBI as a NAV deviation greater than 0.05 per cent of the correct NAV in most schemes, lower for liquid funds), the AMC must:

1. Restate the NAV for the affected days and republish.
2. Reprocess all transactions executed at the incorrect NAV.
3. Compensate affected investors out of AMC funds, not from the scheme corpus.
4. Notify SEBI and the trustees within the prescribed timeline.
5. Cause the trustees to investigate the cause and direct corrective measures.

AMFI maintains an industry-wide error-reporting and compensation-reconciliation framework, with material errors disclosed in aggregate in the AMFI Annual Report.

Role of the fund accountant, custodian, and auditor

The fund accountant is the operational owner of the NAV computation process. The function may be in-house at the AMC or outsourced to a specialist service provider; CAMS and KFin Technologies both operate fund-accountant services that overlap with their RTA functions, while certain large AMCs maintain in-house fund-accountant teams. The fund accountant collects prices from valuation agencies, runs the valuation engine, computes net assets and NAV, and submits to AMFI.

The custodian independently verifies the holdings by reconciling against exchange settlement records and depository data. The custodian’s independent verification is a critical control: it ensures that the securities the fund accountant is valuing are actually held by the scheme.

The auditor conducts a half-yearly limited review and an annual full audit, with specific attention to:

• Adherence to the AMC’s stated valuation policy.
• Consistency in the application of fair-value methodologies.
• Adequacy of price-source documentation.
• Materiality of any unresolved NAV variances during the period.

The audit opinion forms part of the mutual fund annual report and is reviewed by the trustees on receipt.

Recent developments

Standardisation of valuation policies

SEBI’s 2023 to 2024 consultations on the standardisation of valuation policies across AMCs are intended to reduce inter-AMC variance in fair-value adjustments and matrix-price overrides. A SEBI working group’s interim recommendations have produced visible convergence in the treatment of illiquid corporate bonds and unlisted equity through 2025.

Real-time NAV consultation

SEBI’s October 2024 consultation paper on intra-day indicative NAV for equity and hybrid schemes proposed that schemes publish an iNAV every 15 to 30 minutes during trading hours, similar to the existing iNAV framework for exchange-traded funds. The proposal is opposed by parts of the industry on operational complexity grounds, but is consistent with global trends toward real-time price transparency.

Tighter side-pocket NAV reporting

The SEBI Master Circular reissue of May 2024 tightened the reporting requirements for side-pocketed portfolios, requiring monthly NAV updates on the side pocket and standardised disclosure of recovery-fair-value methodology.

See also

• Net Asset Value (NAV)
• Applicable NAV and cut-off rules
• Mark-to-market for debt holdings
• Daily mark-to-market for debt MFs
• Side-pocketed scheme
• Side-pocketing framework for debt mutual funds
• Mutual fund fund accountant
• Mutual fund custodian
• Mutual fund auditor
• Mutual fund RTA
• Mutual fund trust structure
• Mutual fund annual report
• Total Expense Ratio (TER)
• SEBI (Mutual Funds) Regulations, 1996
• Statement of Additional Information (SAI)
• Mutual fund trail commission
• AMFI NAV file (NAVall)
• Mutual fund consolidated account statement
• Franklin Templeton winding-up 2020
• SEBI mutual-fund compliance audit
• Mutual fund industry in India

References

1. SEBI (Mutual Funds) Regulations, 1996, Regulation 47, Regulations 48 to 50, Eighth Schedule.
2. SEBI Master Circular on Mutual Funds, SEBI/HO/IMD/IMD-PoD-1/P/CIR/2024/137, 27 May 2024.
3. SEBI Circular SEBI/HO/IMD/DF4/CIR/P/2019/102 dated 24 September 2019, Valuation of money market and debt securities.
4. SEBI Circular SEBI/HO/IMD/DF2/CIR/P/2020/175 dated 17 September 2020, Cut-off time and applicability of NAV.
5. SEBI Circular SEBI/HO/IMD/DF2/CIR/P/2021/553 dated 29 September 2021, Swing pricing framework for debt mutual funds.
6. SEBI Circular on Side-Pocketing, SEBI/HO/IMD/DF2/CIR/P/2018/160, 28 December 2018.
7. AMFI Best Practices Guidelines Circular 35P/MEM-COR/13/2019-20, Valuation methodology.
8. FIMMDA Yield Curve and Reference Rates, Fixed Income Money Market and Derivatives Association of India.
9. Clearing Corporation of India (CCIL) Reference Rates Daily Publication.
10. Reserve Bank of India Reference Rate, daily publication.