Safe Borrowing Limit

When you apply for a Loan Against Mutual Fund, your lender will calculate a maximum eligible loan amount based on the current market value of your pledged mutual fund units and the applicable Loan to Value ratio for your fund category. This figure tells you the most you can borrow. It does not tell you the most you should borrow.

For a cautious investor who wants to use LAMF as a financial tool without exposing themselves to the stress and disruption of a margin call, the maximum eligible amount and the safe borrowing limit are two very different numbers. This guide walks through how to think about and calculate your own safe borrowing limit — a figure that accounts for the volatility of your portfolio, the nature of market risk, and the practical realities of managing a collateral-backed loan over time.

Why the Maximum LTV Is Not Your Safe Borrowing Limit

The Loan to Value ratio applied by lenders to mutual fund collateral is a credit risk parameter, not a risk management recommendation for borrowers. When a lender says you can borrow up to sixty percent of the value of your equity fund portfolio, they are stating the maximum they are willing to lend — not the amount that leaves you with a comfortable buffer against market movements.

If you borrow at or near the maximum LTV, your margin buffer — the gap between what your collateral is worth and what you owe — is at its thinnest. Any meaningful decline in the NAV of your pledged units will begin eroding that buffer. If the decline is sharp enough, the buffer breaches the lender's minimum threshold and a margin call is issued. At that point, you must either repay a portion of the loan or pledge additional units — often at a moment when doing so is logistically or financially inconvenient.

The safe borrowing limit is the amount you can borrow such that even after a significant market correction, your margin buffer remains above the lender's threshold and no margin call is triggered. Calculating this requires you to think about your portfolio's downside risk, not just its current value.

Step One — Understand Your Portfolio's Volatility Profile

The first input into your safe borrowing calculation is an honest assessment of how volatile your pledged portfolio is. Different mutual fund categories carry very different levels of NAV volatility.

Small-cap and mid-cap equity funds can experience NAV declines of a significant magnitude during market corrections. Broad-market equity index funds tracking large-cap indices tend to be somewhat less volatile but can still see meaningful drawdowns during extended bear markets or periods of global financial stress. Multi-cap and flexi-cap funds occupy a middle ground. Hybrid funds that blend equity and debt provide some dampening of volatility relative to pure equity. Short-duration debt funds are among the most stable in terms of NAV movement, with relatively modest fluctuations even during stressed market environments.

Before calculating your safe borrowing limit, characterise your pledged portfolio. Is it primarily equity-oriented, primarily debt-oriented, or a mix? The more equity-heavy the portfolio, the more conservative your borrowing should be relative to the maximum LTV.

Step Two — Estimate a Realistic Downside Scenario for Your Portfolio

Once you understand the volatility profile of your portfolio, estimate a realistic worst-case NAV decline that your pledged funds could experience over a period of weeks or months. This is not about predicting market movements — it is about using historical context to build a reasonable stress scenario.

For an equity-heavy portfolio, a correction of meaningful magnitude over a period of stress is well within the range of historical experience. For a debt-oriented portfolio focused on short to medium duration funds, the NAV volatility is substantially lower and a smaller stress scenario is appropriate. For a hybrid portfolio, the stress scenario falls somewhere in between depending on the equity-debt split.

Your stress scenario should represent a decline you believe is plausible in a difficult but not extreme market environment. The purpose is to ensure your borrowing remains comfortably within safe territory under realistic adverse conditions, not to plan for complete market collapse.

Step Three — Apply the Stress Scenario to Calculate a Stressed Collateral Value

Once you have estimated a realistic downside for your portfolio, apply that percentage decline to your current portfolio value to arrive at a stressed collateral value. This is the value your pledged mutual fund units might reach during an adverse market period.

For example, if your current portfolio value is a given amount and you estimate a realistic adverse scenario involves a decline of a certain percentage, your stressed collateral value is the portfolio value reduced by that percentage. This stressed figure is the number you should use as the basis for your safe borrowing calculation, not the current market value.

Step Four — Apply the LTV to the Stressed Value, Not the Current Value

The next step is to apply the lender's LTV ratio to your stressed collateral value rather than to the current portfolio value. This gives you a borrowing amount that would remain within the acceptable LTV even after the stress scenario materialises.

If the lender applies an LTV of sixty percent to equity funds and your stressed portfolio value after the assumed decline is a certain figure, multiplying that stressed value by sixty percent gives you the loan amount that would still be within the lender's LTV threshold even after the market correction. Borrowing at or below this figure means your loan is unlikely to breach the margin threshold under the stress scenario you have assumed.

This is the core logic of conservative LAMF borrowing: you are not sizing your loan to today's portfolio value, you are sizing it to what your portfolio might be worth after a realistic market setback.

Step Five — Add a Personal Buffer Below the Calculated Figure

Even after applying the stress scenario, it is worth building in a further personal buffer by borrowing somewhat below the figure calculated in step four. Markets can move in ways that exceed reasonable stress assumptions, particularly during sudden external shocks. A personal buffer of a meaningful percentage below your stress-adjusted maximum gives you an additional layer of protection and means you enter a margin call scenario only in truly exceptional circumstances.

For the most cautious investor, borrowing at roughly half the maximum eligible loan amount on a current value basis is a commonly used rule of thumb for equity-heavy portfolios. This level of conservatism means you have substantial room to absorb NAV declines before the margin situation becomes critical.

How Portfolio Composition Affects Your Safe Limit

The safe borrowing limit is not a fixed number — it varies based on the specific composition of your pledged portfolio. A portfolio that is entirely in short-duration debt funds with minimal NAV volatility can support a borrowing level closer to the maximum LTV because the downside risk is contained. A portfolio that is primarily in small-cap or sectoral equity funds requires a much more conservative borrowing posture because the downside risk is substantially higher.

If your portfolio is a mix of fund types, weight your stress scenario and your safe borrowing calculation by the proportion of each fund category. A portfolio that is half equity-oriented and half debt-oriented falls somewhere between the pure equity and pure debt scenarios, leaning toward the more conservative end given that equity volatility dominates the risk profile during market stress.

The Role of Unpledged Units in Your Safety Framework

Your safe borrowing limit calculation should also account for what unpledged mutual fund units you have available outside the pledged portfolio. Unpledged units represent your rapid-response resource in the event that a margin call is issued. The more easily and quickly you can pledge additional units to restore the required collateral buffer, the more confidently you can operate your LAMF.

If you have a substantial pool of unpledged units in relatively stable fund categories, you have effectively extended your safe borrowing range because your ability to respond to a margin call is strong. If all your mutual fund holdings are pledged and you have no unpledged buffer, your safe borrowing limit should be correspondingly more conservative, because you have no easy response mechanism if your collateral value declines.

Using the LAMF Calculator on Stashfin

The LAMF calculator on Stashfin is a practical tool for understanding your eligible credit line based on your current portfolio value and fund category. Use it as a starting point to understand the maximum available to you, and then apply the stress-adjusted conservative borrowing framework described in this guide to arrive at the amount you actually want to draw.

The calculator gives you the ceiling. Your safe borrowing limit, calculated with a realistic downside scenario and a personal buffer, gives you the floor of responsible usage. The right loan amount for you sits within that range, calibrated to your specific risk tolerance, your portfolio composition, and the nature of the expense you are funding.

Conservative Borrowing as the Foundation of LAMF Success

The most successful LAMF borrowers over time are not necessarily those who extract the maximum possible loan from their portfolios. They are those who use the facility strategically and conservatively — borrowing what they need, planning repayment thoughtfully, and managing their loan with awareness of how market movements affect their collateral position.

Conservative borrowing is not a constraint on the utility of LAMF. It is the foundation that makes LAMF a reliable, repeatable financial tool that can be used across multiple life situations over the years without ever creating a crisis. A well-sized loan, carefully managed, allows you to access liquidity from your investments when you need it while keeping your long-term financial plan fully intact.

Loan Against Mutual Fund is subject to applicable interest rates and credit assessment. Mutual fund units pledged as collateral are subject to market risks. Please read all loan-related documents carefully.