Portfolio Rebalancing in India: 5/25 Rule Guide 2026

What portfolio rebalancing means

Portfolio rebalancing is the act of selling and buying assets to bring your portfolio back to the allocation percentages you originally set as your target. In practical terms, it is a maintenance activity, not a performance chase. It applies across common Indian instruments such as equity mutual funds, direct stocks, gold ETFs, Public Provident Fund (PPF), and the National Pension System (NPS). As markets move, the market value of each bucket changes at different speeds, and your portfolio can slowly become more concentrated than you intended. Rebalancing is the mechanism that restores the original mix. The core idea is simple: trim what has grown too much and add to what is lagging, so your risk level stays aligned to your plan.

Lock two items before placing any trade

Before you touch a single trade, you need two things locked in: a written target allocation and a set of drift thresholds that tell you when rebalancing is actually necessary. Without a written target, every market rally or correction can tempt you into reactive decisions. Without drift thresholds, you can end up rebalancing too frequently, which can increase costs and create avoidable tax events. Your reference point should be your own plan, not market sentiment or recent headlines. This “rules first, trades later” approach is what keeps rebalancing disciplined.

Setting a target allocation that fits your life

Your target allocation should reflect your investment horizon, risk tolerance, and financial goals, not what performed best last year. A common starting point for a salaried Indian investor in their 30s can look like the table below. The key is not whether the exact percentages match your situation, but that you write down a clear mix and treat it as a reference document. Every rebalancing decision should be measured against this table.

Drift thresholds and the 5/25 rule

A drift threshold defines how far an asset class can move from its target before you act. A widely used rule is the 5/25 rule: rebalance if an asset class drifts by more than 5 percentage points in absolute terms, or more than 25% of its original allocation in relative terms, whichever comes first. For example, if equity is targeted at 60%, you would only rebalance if it crosses 65% (absolute) or 75% (relative). The point is consistency across all asset classes, so decisions are predictable. Some investors also use a simpler threshold trigger like 5% to 10% deviation, but the logic remains the same: act only when the portfolio moves outside pre-set guardrails.

Step 1: Measure your current allocation correctly

You cannot know where your portfolio actually stands until you have a complete, accurate snapshot of every holding you own. Start by logging into each platform you use, such as your mutual fund registrar (CAMS or KFintech), your demat account, and your bank, and record the current market value of each position. For illiquid assets like PPF or Sovereign Gold Bonds, use the current accrued balance. List every holding in a single spreadsheet before you do any math, because partial data leads to misleading allocations. Once you have all values, group them by asset class, add them up, and calculate each bucket as a percentage of the total.

Compare the “% of Total” column directly against your target allocation table. Any asset class sitting outside your drift threshold becomes a candidate for rebalancing in the next step.

Step 2: Choose between time-based and threshold-based rebalancing

Once you know your current allocation, decide how often and under what conditions you will rebalance. Two methods work well for most Indian investors: time-based rebalancing and threshold-based rebalancing. Time-based rebalancing means you review and adjust on a fixed schedule, typically quarterly or annually, regardless of how much the allocation has drifted. Threshold-based rebalancing means you act only when your portfolio drifts past the guardrails you set, such as the 5/25 rule. Investors also commonly review at fixed intervals such as every 6 months or once a year, but only execute changes when the drift is meaningful.

Step 3: Execute trades with taxes and cashflows in mind

Execution is where many investors create avoidable costs, especially in taxable assets. Before selling anything, check whether incoming SIP installments or fresh lump-sum investments can close the gap. For instance, if your debt allocation is meaningfully below target, redirect your next few SIPs into debt funds instead of selling equity units immediately. This “Smart SIP” approach is highlighted as a tax-efficient way to rebalance for long-term investors because it relies on new contributions, not redemptions.

If you do need to sell, sequence your trades to minimise the tax impact and frictional costs. The source material also notes a practical tactic some investors use: selling units from over-performing funds and deploying the proceeds into under-allocated categories. It also mentions using the ₹1.25 lakh gains limit while rebalancing equity, aiming to keep tax on those gains at zero within that limit. Another technique mentioned is selling and immediately buying back the same fund to reset the purchase price higher, which can reduce future tax liability. These are execution choices, but they work only when they fit your allocation rules.

Mutual fund portfolio rebalancing: a simple workflow

For mutual fund investors, the steps are the same but easier to operationalise. Review the current split across equity, debt, and other categories, then compare it to your original target allocation. Reduce exposure to funds that are over-allocated and increase investments in under-allocated categories. If you want to avoid selling, adjust future SIP contributions to gradually restore balance. Regular tracking matters because rebalancing is not a one-time activity, and the portfolio can drift again as markets move.

Key rules and triggers to keep rebalancing disciplined

The most repeatable approach is to combine clear guardrails with a repeatable review routine. Set your target allocation in writing, choose a method (calendar-based or threshold-based), and define what level of drift triggers action. Keep the decision rule separate from the market narrative of the day. The source material also stresses diversification and avoiding very tactical or aggressive bets, favouring a stable, well-diversified portfolio that includes some allocation to precious metals. When volatility rises, gradual rebalancing and staggered investments are presented as more disciplined than trying to time a perfect entry or exit.

Conclusion

Portfolio rebalancing is a structured way to keep your investments aligned with your original plan as market values change. The process starts with a written target allocation and a clear drift threshold, then moves to measuring your actual allocation, choosing a rebalancing method, and executing with taxes in mind. The most repeatable habit is to pick your method, set a reminder, and follow the same steps each time your portfolio drifts past its guardrails. Done this way, rebalancing stays a disciplined maintenance task, not a reaction to short-term market noise.