Skip to main content

Portfolio Rebalancing Strategies

Category: Investment Frameworks - Portfolio Construction Last Updated: 2026-06-08

What is Rebalancing?​

Rebalancing is the process of bringing your portfolio back to your target asset allocation by buying/selling assets.

Why Rebalance?​

Example:

  • Target: 60% Equity, 40% Debt
  • After 1 year: Equity grows to 75%, Debt 25%
  • Without rebalancing: Higher risk than intended
  • With rebalancing: Sell equity, buy debt → back to 60/40

Benefits:

  1. Maintain intended risk level
  2. Sell high, buy low automatically
  3. Discipline in volatile markets
  4. Reduces sequence risk

When to Rebalance?​

Calendar-Based​

Annually (Recommended for most):

  • Rebalance once a year
  • Pick same date (e.g., April 1st)
  • Simple, disciplined approach

Quarterly:

  • For active investors
  • More frequent adjustments
  • More trading costs

Threshold-Based​

5% Drift Rule:

  • Rebalance when allocation drifts >5% from target
  • Example: 60% equity target, rebalance if goes <55% or >65%
  • More responsive to market moves

10% Drift Rule:

  • Rebalance when drift >10%
  • Less frequent trading
  • Lower costs but larger deviations

How to Rebalance?​

Method 1: Sell & Buy​

Sell overweight asset, buy underweight:

  • Sell excess equity
  • Buy deficit debt
  • Tax implications: Capital gains tax applies

Method 2: New Contributions​

Preferred Method (Tax-Efficient):

  • Direct new investments to underweight asset
  • No selling = no tax
  • Takes longer to rebalance

Example:

  • Target: 60E/40D
  • Current: 70E/30D (Rs 7L equity, Rs 3L debt)
  • New Rs 1L investment → Put entire Rs 1L in debt
  • New allocation: Rs 7L/Rs 4L = 63.6E/36.4D (closer to 60/40)

Method 3: Combination​

  • Sell some overweight
  • Add new money to underweight
  • Fastest rebalancing

Which Asset to Sell/Buy?​

Should I choose outperformer or underperformer?

For Selling (Overweight):

  • Sell the outperformer - Lock in gains
  • Don't get emotional about "winners"

For Buying (Underweight):

  • Buy the underperformer - Buy low
  • Contrarian but mathematically sound

Tax-Smart Rebalancing​

Harvest Losses:

  • If underperformer has losses, sell and buy back
  • Offset capital gains
  • See: Tax Loss Harvesting

Use LTCG Exemption:

  • Realize Rs 1.25L gains tax-free while rebalancing
  • Annual opportunity

Prioritize Tax-Advantaged Accounts:

  • Rebalance within NPS/EPF first (no tax)
  • Then taxable accounts

Rebalancing During Life Stages​

Accumulation (Working Years)​

  • Rebalance annually
  • Use new contributions preferred
  • Minimize taxes

Near Retirement (5 years before)​

  • Shift equity to debt gradually
  • Critical for sequence risk
  • May need selling, not just contributions

Retirement (Withdrawal Phase)​

  • Rebalance through withdrawals
  • Withdraw from overweight asset
  • Maintains allocation while providing income

Common Mistakes​

  1. Over-rebalancing - Too frequent, high costs
  2. Never rebalancing - Risk creep
  3. Emotional rebalancing - Chasing performance
  4. Ignoring taxes - Rebalance smartly
  5. No plan - Need target allocation first!

Simple Rebalancing Rules​

Annual Review Checklist:

  1. Calculate current allocation %
  2. Compare to target allocation
  3. If drift >5%:
    • Use new money to buy underweight
    • If no new money, sell & buy
    • Consider tax implications
  4. Document the rebalancing
  5. Set reminder for next year

References​