Rebalancing Your Portfolio – When & How

Rebalancing is the secret to long-term investing success. Learn when and how to rebalance your mutual fund portfolio — without second-guessing the markets.

07/07/2025

Introduction

Your portfolio drifts over time. A 60:40 equity-debt mix can silently become 75:25 in a bull run — and you’re now exposed to higher risk. 

 That’s why portfolio rebalancing is crucial. It keeps your investments aligned with your goals and risk profile — not the market’s mood swings.

When Should You Rebalance?

Time-based Rebalancing:

  • Review every 6 or 12 months
Threshold-based Rebalancing:
  • Rebalance when allocation drifts by 5% or more
How to Rebalance? 

 🔁 Sell overweight assets, invest in underweight ones

🎯 Use SIP adjustments or fresh investments to avoid tax impact
📅 Set calendar reminders — automation wins 

Real-Life Example: Tara’s Balanced Strategy Tara started with a 70:30 equity-debt split in 2020. By end-2021 (bull run), equity became 80%.

She rebalanced — booking some profits and increasing debt allocation. In 2022's correction, her portfolio lost only 5%, while her friend Manu, who stayed at 90% equity, lost 15%. Lesson: Rebalancing isn’t just discipline — it’s risk insurance

Conclusion

Set and forget? Not wise.

Set and RECHECK is smarter. Rebalancing ensures your portfolio stays on track — regardless of market noise. 

 Fix a rebalancing rule today — calendar-based or threshold-based.

Consistency is the real alpha.

Summary Table: Rebalancing Triggers & Actions

Trigger Type When to Rebalance Action Required
Time-Based Every 6–12 months Review and realign allocations
Threshold-Based 5%+ drift from target mix Sell/buy to restore original ratio
Major Life Event New goal / income change Redesign asset mix
Market Crash/Rally Rapid gain/loss in one asset Adjust to maintain original risk level

Dr. Satish Vadapalli
Research Analyst