Rebalancing & Switching Mutual Funds: When and How to Adjust Your Portfolio

Most investors spend a lot of time choosing the right mutual funds. They research, compare options, and invest with a clear plan in mind. But once the investments are made, markets begin to move, and over time, that carefully planned portfolio can slowly drift away from its original balance. Equity funds may grow much faster during a bull market, debt funds may lag, and suddenly the mix of investments no longer matches the risk level you initially wanted.

This is where rebalancing and switching become important. These are not complicated strategies meant only for experienced investors. They are simple, periodic actions that help keep your portfolio aligned with your financial goals and risk comfort. Knowing when to rebalance, when to switch funds, and when to simply stay patient can make a meaningful difference to both your long-term returns and your peace of mind.

What is Rebalancing in Mutual Funds?

Think of your portfolio like a balanced diet plan. In the beginning, you decide how much protein, carbs, and fats you want in your meals to stay healthy and maintain balance. But over time, if you keep eating more rice and sweets while the amount of protein and vegetables stays the same, your diet slowly becomes unbalanced without you paying much attention to it.

That’s pretty much what happens inside a portfolio over time.

When you begin investing, you usually pick a target allocation. For example, you may decide to keep 70% in equity mutual funds and 30% in debt funds. That split reflects your comfort with risk. But markets never stay still. If equities perform very well for a long time, your equity portion may quietly rise to 80% or even 85%.

Without realizing it, your portfolio has now become much riskier than you originally intended. Rebalancing simply means bringing your portfolio back to the allocation you planned in the beginning.

It is not about predicting markets. It is not trying to guess what will rise next. It is just a disciplined way of keeping your risk level under control.

Why You Need to Rebalance Periodically

Markets naturally create something called “risk drift”. That simply means the better-performing asset slowly starts taking up a bigger share of your portfolio.

For example, a 70:30 equity-debt split may slowly become 85:15 during a strong bull market. On the surface, that feels great because your portfolio value has grown. But underneath, your exposure to risk has increased a lot too.

Rebalancing helps in two important ways.

First, it brings your portfolio back to the risk level you are actually comfortable with.

Second, it quietly forces you to follow one of the smartest investing habits: reducing exposure to assets that have already run up sharply and adding more to areas that have lagged behind.

In simple words, it nudges you to “sell high and buy low” without emotions getting in the way.

The reverse works too. If markets fall and equity drops to 55% of your portfolio, rebalancing pushes you to add more equity at lower prices.

Over long periods, this kind of disciplined investing often works far better than emotional decision-making.

Two Approaches to Rebalancing

Time-Based Rebalancing (Annual / Semi-Annual)

This is the simpler method.

You pick a fixed schedule, maybe once a year or every six months, and review your portfolio regardless of what markets are doing.

For example, every December you check your allocation and bring it back to the original target if needed.

The biggest advantage here is simplicity. There is no guesswork involved. You follow a calendar, not emotions.

For most long-term investors, reviewing once a year is usually enough.

The small downside is that you may rebalance even when the drift is tiny, or miss a larger drift that built up earlier in the year. Still, for most retail investors, the simplicity is worth it.

Threshold-Based Rebalancing (±5-10% Drift)

This approach is a little more precise.

Instead of checking on fixed dates, you rebalance only when the allocation moves meaningfully away from your target.

For example, if your target is 70% equity:

  • At 74% equity, you may do nothing.
  • At 80% equity, you may rebalance.

This method responds to actual market movements rather than the calendar.

The advantage is that you avoid unnecessary transactions during calm periods while acting faster during major market shifts.

The challenge is that you need to monitor your portfolio more actively.

Many investors combine both methods. They review the portfolio once a year but also rebalance earlier if the drift crosses a certain limit, like 10%.

How to Rebalance Step-by-Step

Rebalancing sounds complicated at first, but the actual process is fairly simple.

Step 1: Calculate Your Current Allocation

Open your investment app or portfolio dashboard.

Check the current value of each category:

  • Equity
  • Debt
  • Hybrid
  • Gold

Then calculate what percentage each category represents in your total portfolio today.

Step 2: Compare With Your Original Target

Now compare today’s numbers with your original plan.

If you wanted a 70:30 equity-debt split, see how much the portfolio has moved away from that.

Step 3: Identify Overweight and Underweight Areas

  • “Overweight” means a category has grown beyond its target.
  • “Underweight” means it has fallen below its target.

Step 4: Switch or Redirect SIPs

To restore balance, you can:

  • Shift money from overweight funds to underweight ones
  • Redirect future SIPs toward the underweight category

In many cases, redirecting SIPs is the smarter starting point.

Smart Rebalancing: Use New SIPs Instead of Selling

One of the easiest and smartest ways to rebalance is by using your future SIP contributions.

Suppose equity has become overweight while debt has fallen below target. Instead of selling equity funds immediately, you can simply redirect upcoming SIPs into debt funds for a few months.

Slowly, the portfolio starts moving back toward balance on its own.

Why is this useful?

Because selling mutual fund units creates a taxable event. If your equity fund has appreciated, you may have to pay capital gains tax.

By using fresh SIP money instead of selling old units, you either avoid or delay taxes.

This method works best when the imbalance is moderate.

For example:

  • 70% target equity becomes 76%: SIP adjustment may be enough
  • 70% target equity becomes 90%: SIPs alone may take too long

In larger drifts, partial switching becomes necessary.

A good way to think about it:

  • SIP redirection = first option
  • Switching = backup option for bigger imbalances

What is Switching a Mutual Fund?

Switching means moving your investment from one mutual fund scheme to another.

You can either:

  • Switch within the same AMC (Asset Management Company)
  • Redeem from one AMC and invest into another

For example:

  • Moving from HDFC Flexi Cap Fund to HDFC Balanced Advantage Fund is a same-AMC switch
  • Moving from HDFC to Mirae Asset requires redemption and fresh investment

Switching is a normal part of portfolio management when done for the right reasons. But unnecessary switching can hurt returns through taxes, exit loads, and poor timing.

When Should You Switch Mutual Funds? (5 Valid Reasons)

Reason 1: Consistent Underperformance vs Benchmark

Every fund should be compared with:

  • Its benchmark index
  • Similar funds in the same category

A bad quarter or even a weak year is not unusual.

But if a fund consistently underperforms for two or more years while peers perform better, it deserves a closer look. Before switching, try to understand why the underperformance happened.

Sometimes the fund manager made poor decisions. Other times, the investment style itself may simply be out of favour temporarily. The difference matters.

Reason 2: Fund Manager Change That Changes Strategy

Many successful funds are strongly shaped by the thinking of the fund manager. If that manager leaves, the fund’s investment style may also change.

The new manager may prefer different sectors, different company sizes, or different levels of risk. If the new strategy no longer matches why you originally chose the fund, reassessment becomes reasonable.

Usually, it makes sense to observe the fund for a couple of quarters before making a decision.

Reason 3: Your Risk Appetite or Goal Changed

Your portfolio should evolve with your life.

A small-cap-heavy portfolio that suited you at age 28 may not suit you at 48 when retirement is closer.

Major life events also matter:

  • Marriage
  • Children
  • Starting a business
  • Upcoming large expenses

As goals become nearer, shifting toward more stable funds is often a smart and responsible move.

Reason 4: Asset Allocation Drifted Significantly

Sometimes equity grows so sharply that SIP redirection alone cannot fix the imbalance quickly enough.

In such cases, switching part of the money from equity to debt or hybrid funds becomes a practical way to restore your intended allocation.

Reason 5: Switching From Regular to Direct Plan

Regular mutual fund plans include distributor commissions inside the expense ratio. Direct plans remove that commission, which means lower ongoing costs and potentially better long-term returns.

Switching from regular to direct can therefore be a meaningful long-term upgrade. But there’s one important catch:

The switch is treated as a redemption, so capital gains tax may apply.

In many cases, the money you save over the years through lower annual charges can be much higher than the one-time tax you pay while switching. Still, it is important to calculate the numbers properly before making the move.

Bad Reasons to Switch (Avoid These)

A recent short-term fall is not a good reason to switch.

Equity funds regularly go through rough phases. A 15% decline during a market correction does not automatically mean the fund is bad. Switching during panic often locks in losses permanently.

Your friend’s recommendation is also not a valid reason.

Their:

  • Goals
  • Risk tolerance
  • Income
  • Time horizon

may be completely different from yours.

Another common mistake is chasing new NFOs (New Fund Offers).

A ₹10 NAV does not mean a fund is “cheap”. NAV simply reflects the current value of the underlying investments. An established fund with a ₹100 NAV is not expensive for that reason alone.

Many investors switch into NFOs thinking they are getting in “early”, but that misunderstanding has often led to poor decisions.

Tax Impact of Rebalancing & Switching

Every mutual fund switch is treated as two transactions:

  • A redemption
  • A fresh purchase

That means switching funds can create a capital gains tax event, even if the money stays invested in mutual funds.

For equity mutual funds:

  • Units sold within 1 year are taxed as Short-Term Capital Gains (STCG) at 20%
  • Units held for more than 1 year are taxed as Long-Term Capital Gains (LTCG) at 12.5%

Currently, long-term equity gains up to ₹1.25 lakh per financial year are exempt from tax.

Debt mutual fund taxation has become more complex in recent years. For many debt funds purchased after April 1, 2023, gains are generally taxed according to your income tax slab, regardless of how long you hold them. Some hybrid and non-equity funds may follow different tax rules depending on their equity exposure and purchase date.

The key takeaway is simple: before switching or rebalancing, always estimate the tax impact. If the tax cost is high but the reason for switching is weak, waiting may sometimes be the smarter financial decision.

Exit Load on Switching: When It Applies

Exit load is a fee charged when you redeem or switch mutual fund units before a certain holding period. For many equity funds, the exit load is commonly around 1% if redeemed within one year.

Debt and liquid funds often have lower or no exit loads, though this varies too.

The key point is this: If you are already paying exit load plus capital gains tax, the reason for switching should be strong enough to justify those costs.

How to Switch Mutual Funds Online (Step-by-Step)

Switching Within the Same AMC

This is usually faster and simpler.

You can:

  1. Log into the AMC website or app
  2. Open your portfolio
  3. Select the fund you want to switch out of
  4. Click “Switch”
  5. Choose the destination fund
  6. Confirm the transaction

The money stays within the same AMC ecosystem.

Switching Across Different AMCs

This involves two separate steps:

  1. Redeem Fund A
  2. Invest into Fund B after the money reaches your bank account

For equity funds, settlement may take around one to three business days. During that period, your money remains temporarily uninvested.

Many investment platforms now simplify this process and handle both transactions together.

How Often Is Too Often to Rebalance?

For most investors, once a year is usually enough. Rebalancing too frequently, like every month or every quarter, often creates more harm than benefit.

Why?

Because frequent rebalancing can lead to:

  • More taxes
  • More exit loads
  • More unnecessary activity
  • More emotional reactions to short-term market moves

Markets naturally fluctuate all the time.

A portfolio that looks slightly unbalanced today may correct itself naturally after a few months.

In investing, constant activity rarely improves results. A calm annual review is usually far more effective than reacting to every market movement.